1
|
Orach J, Hemshekhar M, Rider CF, Spicer V, Lee AH, Yuen ACY, Mookherjee N, Carlsten C. Concentration-dependent alterations in the human plasma proteome following controlled exposure to diesel exhaust. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123087. [PMID: 38061431 DOI: 10.1016/j.envpol.2023.123087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/24/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023]
Abstract
Traffic-related air pollution (TRAP) exposure is associated with systemic health effects, which can be studied using blood-based markers. Although we have previously shown that high TRAP concentrations alter the plasma proteome, the concentration-response relationship between blood proteins and TRAP is unexplored in controlled human exposure studies. We aimed to identify concentration-dependent plasma markers of diesel exhaust (DE), a model of TRAP. Fifteen healthy non-smokers were enrolled into a double-blinded, crossover study where they were exposed to filtered air (FA) and DE at 20, 50 and 150 μg/m3 PM2.5 for 4h, separated by ≥ 4-week washouts. We collected blood at 24h post-exposure and used label-free mass spectrometry to quantify proteins in plasma. Proteins exhibiting a concentration-response, as determined by linear mixed effects models (LMEMs), were assessed for pathway enrichment using WebGestalt. Top candidates, identified by sparse partial least squares discriminant analysis and LMEMs, were confirmed using enzyme-linked immunoassays. Thereafter, we assessed correlations between proteins that showed a DE concentration-response and acute inflammatory endpoints, forced expiratory volume in 1 s (FEV1) and methacholine provocation concentration causing a 20% drop in FEV1 (PC20). DE exposure was associated with concentration-dependent alterations in 45 proteins, which were enriched in complement pathways. Of the 9 proteins selected for confirmatory immunoassays, based on complementary bioinformatic approaches to narrow targets and availability of high-quality assays, complement factor I (CFI) exhibited a significant concentration-dependent decrease (-0.02 μg/mL per μg/m3 of PM2.5, p = 0.04). Comparing to FA at discrete concentrations, CFI trended downward at 50 (-2.14 ± 1.18, p = 0.08) and significantly decreased at 150 μg/m3 PM2.5 (-2.93 ± 1.18, p = 0.02). CFI levels were correlated with FEV1, PC20 and nasal interleukin (IL)-6 and IL-1β. This study details concentration-dependent alterations in the plasma proteome following DE exposure at concentrations relevant to occupational and community settings. CFI shows a robust concentration-response and association with established measures of airway function and inflammation.
Collapse
Affiliation(s)
- Juma Orach
- Air Pollution Exposure Laboratory, Division of Respiratory Medicine, Department of Medicine, Vancouver Coastal Health Research Institute, The University of British Columbia, British Columbia, Vancouver, V5Z1W9, Canada
| | - Mahadevappa Hemshekhar
- Manitoba Center for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Manitoba, Winnipeg, R3E 3P4, Canada
| | - Christopher Francis Rider
- Air Pollution Exposure Laboratory, Division of Respiratory Medicine, Department of Medicine, Vancouver Coastal Health Research Institute, The University of British Columbia, British Columbia, Vancouver, V5Z1W9, Canada
| | - Victor Spicer
- Manitoba Center for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Manitoba, Winnipeg, R3E 3P4, Canada
| | - Amy H Lee
- Molecular Biology and Biochemistry, Department of Molecular Biology and Biochemistry, Simon Fraser University, British Columbia, Burnaby, V5A 1S6, Canada
| | - Agnes Che Yan Yuen
- Air Pollution Exposure Laboratory, Division of Respiratory Medicine, Department of Medicine, Vancouver Coastal Health Research Institute, The University of British Columbia, British Columbia, Vancouver, V5Z1W9, Canada
| | - Neeloffer Mookherjee
- Manitoba Center for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Manitoba, Winnipeg, R3E 3P4, Canada; Department of Immunology, University of Manitoba, Manitoba, Winnipeg, R3E 0T5, Canada
| | - Chris Carlsten
- Air Pollution Exposure Laboratory, Division of Respiratory Medicine, Department of Medicine, Vancouver Coastal Health Research Institute, The University of British Columbia, British Columbia, Vancouver, V5Z1W9, Canada.
| |
Collapse
|
2
|
Detsika MG, Palamaris K, Dimopoulou I, Kotanidou A, Orfanos SE. The complement cascade in lung injury and disease. Respir Res 2024; 25:20. [PMID: 38178176 PMCID: PMC10768165 DOI: 10.1186/s12931-023-02657-2] [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: 11/24/2023] [Accepted: 12/26/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND The complement system is an important arm of immune defense bringing innate and adaptive immunity. Although originally regarded as a major complementary defense mechanism against pathogens, continuously emerging evidence has uncovered a central role of this complex system in several diseases including lung pathologies. MAIN BODY Complement factors such as anaphylatoxins C3a and C5a, their receptors C3aR, C5aR and C5aR2 as well as complement inhibitory proteins CD55, CD46 and CD59 have been implicated in pathologies such as the acute respiratory distress syndrome, pneumonia, chronic obstructive pulmonary disease, asthma, interstitial lung diseases, and lung cancer. However, the exact mechanisms by which complement factors induce these diseases remain unclear. Several complement-targeting monoclonal antibodies are reported to treat lung diseases. CONCLUSIONS The complement system contributes to the progression of the acute and chronic lung diseases. Better understanding of the underlying mechanisms will provide groundwork to develop new strategy to target complement factors for treatment of lung diseases.
Collapse
Affiliation(s)
- M G Detsika
- 1st Department of Critical Care Medicine & Pulmonary Services, GP Livanos and M Simou Laboratories, Evangelismos Hospital, National and Kapodistrian University of Athens, 3, Ploutarchou St., 10675, Athens, Greece.
| | - K Palamaris
- 1st Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - I Dimopoulou
- 1st Department of Critical Care Medicine & Pulmonary Services, GP Livanos and M Simou Laboratories, Evangelismos Hospital, National and Kapodistrian University of Athens, 3, Ploutarchou St., 10675, Athens, Greece
| | - A Kotanidou
- 1st Department of Critical Care Medicine & Pulmonary Services, GP Livanos and M Simou Laboratories, Evangelismos Hospital, National and Kapodistrian University of Athens, 3, Ploutarchou St., 10675, Athens, Greece
| | - S E Orfanos
- 1st Department of Critical Care Medicine & Pulmonary Services, GP Livanos and M Simou Laboratories, Evangelismos Hospital, National and Kapodistrian University of Athens, 3, Ploutarchou St., 10675, Athens, Greece.
| |
Collapse
|
3
|
Aryal A, Harmon AC, Dugas TR. Particulate matter air pollutants and cardiovascular disease: Strategies for intervention. Pharmacol Ther 2021; 223:107890. [PMID: 33992684 PMCID: PMC8216045 DOI: 10.1016/j.pharmthera.2021.107890] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/21/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023]
Abstract
Air pollution is consistently linked with elevations in cardiovascular disease (CVD) and CVD-related mortality. Particulate matter (PM) is a critical factor in air pollution-associated CVD. PM forms in the air during the combustion of fuels as solid particles and liquid droplets and the sources of airborne PM range from dust and dirt to soot and smoke. The health impacts of PM inhalation are well documented. In the US, where CVD is already the leading cause of death, it is estimated that PM2.5 (PM < 2.5 μm in size) is responsible for nearly 200,000 premature deaths annually. Despite the public health data, definitive mechanisms underlying PM-associated CVD are elusive. However, evidence to-date implicates mechanisms involving oxidative stress, inflammation, metabolic dysfunction and dyslipidemia, contributing to vascular dysfunction and atherosclerosis, along with autonomic dysfunction and hypertension. For the benefit of susceptible individuals and individuals who live in areas where PM levels exceed the National Ambient Air Quality Standard, interventional strategies for mitigating PM-associated CVD are necessary. This review will highlight current state of knowledge with respect to mechanisms for PM-dependent CVD. Based upon these mechanisms, strategies for intervention will be outlined. Citing data from animal models and human subjects, these highlighted strategies include: 1) antioxidants, such as vitamins E and C, carnosine, sulforaphane and resveratrol, to reduce oxidative stress and systemic inflammation; 2) omega-3 fatty acids, to inhibit inflammation and autonomic dysfunction; 3) statins, to decrease cholesterol accumulation and inflammation; 4) melatonin, to regulate the immune-pineal axis and 5) metformin, to address PM-associated metabolic dysfunction. Each of these will be discussed with respect to its potential role in limiting PM-associated CVD.
Collapse
Affiliation(s)
- Ankit Aryal
- Louisiana State University School of Veterinary Medicine, Department of Comparative Biomedical Sciences, Skip Bertman Drive, Baton Rouge, Louisiana 70803, United States of America
| | - Ashlyn C Harmon
- Louisiana State University School of Veterinary Medicine, Department of Comparative Biomedical Sciences, Skip Bertman Drive, Baton Rouge, Louisiana 70803, United States of America
| | - Tammy R Dugas
- Louisiana State University School of Veterinary Medicine, Department of Comparative Biomedical Sciences, Skip Bertman Drive, Baton Rouge, Louisiana 70803, United States of America.
| |
Collapse
|
4
|
Jheng YT, Putri DU, Chuang HC, Lee KY, Chou HC, Wang SY, Han CL. Prolonged exposure to traffic-related particulate matter and gaseous pollutants implicate distinct molecular mechanisms of lung injury in rats. Part Fibre Toxicol 2021; 18:24. [PMID: 34172050 PMCID: PMC8235648 DOI: 10.1186/s12989-021-00417-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 06/02/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Exposure to air pollution exerts direct effects on respiratory organs; however, molecular alterations underlying air pollution-induced pulmonary injury remain unclear. In this study, we investigated the effect of air pollution on the lung tissues of Sprague-Dawley rats with whole-body exposure to traffic-related PM1 (particulate matter < 1 μm in aerodynamic diameter) pollutants and compared it with that in rats exposed to high-efficiency particulate air-filtered gaseous pollutants and clean air controls for 3 and 6 months. Lung function and histological examinations were performed along with quantitative proteomics analysis and functional validation. RESULTS Rats in the 6-month PM1-exposed group exhibited a significant decline in lung function, as determined by decreased FEF25-75% and FEV20/FVC; however, histological analysis revealed earlier lung damage, as evidenced by increased congestion and macrophage infiltration in 3-month PM1-exposed rat lungs. The lung tissue proteomics analysis identified 2673 proteins that highlighted the differential dysregulation of proteins involved in oxidative stress, cellular metabolism, calcium signalling, inflammatory responses, and actin dynamics under exposures to PM1 and gaseous pollutants. The presence of PM1 specifically enhanced oxidative stress and inflammatory reactions under subchronic exposure to traffic-related PM1 and suppressed glucose metabolism and actin cytoskeleton signalling. These factors might lead to repair failure and thus to lung function decline after chronic exposure to traffic-related PM1. A detailed pathogenic mechanism was proposed to depict temporal and dynamic molecular regulations associated with PM1- and gaseous pollutants-induced lung injury. CONCLUSION This study explored several potential molecular features associated with early lung damage in response to traffic-related air pollution, which might be used to screen individuals more susceptible to air pollution.
Collapse
Affiliation(s)
- Yu-Teng Jheng
- Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Mailing address: 250 Wuxing St, Taipei, 11031, Taiwan
| | - Denise Utami Putri
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Pulmonary Research Center, Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kang-Yun Lee
- Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Hsiu-Chu Chou
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - San-Yuan Wang
- Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Mailing address: 250 Wuxing St, Taipei, 11031, Taiwan
| | - Chia-Li Han
- Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Mailing address: 250 Wuxing St, Taipei, 11031, Taiwan.
| |
Collapse
|
5
|
Pei L, Zhao M, Xu J, Li A, Luo K, Li R, Yang M, Xu Q. Associations of ambient fine particulate matter and its constituents with serum complement C3 in a panel study of older adults in China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:1019-1025. [PMID: 31252098 DOI: 10.1016/j.envpol.2019.05.096] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/05/2019] [Accepted: 05/18/2019] [Indexed: 06/09/2023]
Abstract
Epidemiological studies have demonstrated association between the total mass of fine particulate matter (PM2.5) exposures and inflammation. There are few studies exploring the associations between PM2.5 constituents and the biomarkers of inflammation in older adults and the underlying biological mechanisms are not exact. In this study, we examined the associations between PM2.5 and its constituents (organic carbon (OC), elemental carbon (EC), total carbon (TC), polycyclic aromatic hydrocarbons (PAHs) and complement three factor (C3), an important biomarker of inflammation in a repeated panel of 175 older adults in Beijing, China. We have constructed three different linear mixed effect models (single-pollutant model, constituent-PM2.5 joint model, and constituent-residual model) to evaluate the association of PM2.5 and its constituents and complement C3, controlling for concentration of high sensitive C-reactive protein (hs-CRP), day of week, mean temperature, relative humidity, location and potential individual confounders. We found robust positive associations of OC, EC, TC, PAHs and PM2.5 mass concentration with complement C3 at different lag patterns. The cumulative effects of pollutants increased across average of 2-5 days. Individuals aged 65 and above, or with diabetes, or BMI ≥30, or with no-cardiopathy, or with hypertension also exhibited positive associations between PM2.5 and complement C3. The results revealed that short-term exposure to PM2.5 and its constituents could result in a significant increase in serum level of complement C3. These findings suggested a possible involvement of complement C3 in the effect of PM2.5 on inflammatory reaction.
Collapse
Affiliation(s)
- Lu Pei
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100005, China
| | - Meiduo Zhao
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100005, China
| | - Jing Xu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100005, China
| | - Ang Li
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100005, China
| | - Kai Luo
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100005, China
| | - Runkui Li
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Mingan Yang
- Division of Biostatistics and Epidemiology, Graduate School of Public Health, San Diego State University, San Diego, CA, 92182, USA
| | - Qun Xu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100005, China.
| |
Collapse
|
6
|
Nagaoka K, Ogino K, Ogino N, Ito T, Takemoto K, Ogino S, Seki Y, Hamada H, Fujikura Y. Human albumin augmented airway inflammation induced by PM2.5 in NC/Nga mice. ENVIRONMENTAL TOXICOLOGY 2019; 34:836-843. [PMID: 30953400 DOI: 10.1002/tox.22751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 03/18/2019] [Accepted: 03/22/2019] [Indexed: 06/09/2023]
Abstract
The synergic allergic inflammatory effects of particulate matter (PM) 2.5 and human albumin were investigated in NC/Nga mice, which are hypersensitive to mite allergens. PM2.5 or PM2.5 plus human albumin with aluminum oxide was injected twice intraperitoneally for sensitization. After 7 days, PM2.5 or PM2.5 plus human albumin was administered five times intranasally to mice for further sensitization. Subsequently, PM2.5 was administered as a challenge on the 11th day. On the 12th day, mice were examined for airway hyperresponsiveness (AHR), bronchoalveolar lavage fluid (BALF) cell count, mRNA expression of Th1 , Th2 cytokines, chemokines, and mucus proteins (MUC5AC and MUC5B) in the lung tissue and histopathology. Although PM2.5 or human albumin alone did not induce allergic airway inflammation, simultaneous inoculation of PM2.5 and human albumin-induced airway inflammation showing increase in AHR, total BALF cell numbers, mRNA levels of IL-13, eotaxin 1, eotaxin 2, and MUC5AC, and anti-IG against human serum albumin. Inflammation was observed around the bronchus in PM2.5 plus human albumin-induced lungs. These results demonstrate that PM2.5 can induce allergic airway inflammation through the synergistic action with human albumin in NC/Nga mice.
Collapse
Affiliation(s)
- Kenjiro Nagaoka
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Keiki Ogino
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Noriyoshi Ogino
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
| | - Tatsuo Ito
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Kei Takemoto
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Shihona Ogino
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
- First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
| | - Yuka Seki
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Hiroki Hamada
- Department of Life Science, Okayama University of Science, Okayama, Japan
| | - Yoshihisa Fujikura
- Division of Morphological Analysis, Department of Anatomy, Biology and Medicine, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| |
Collapse
|
7
|
Li X, Zhang X, Zhang Z, Han L, Gong D, Li J, Wang T, Wang Y, Gao S, Duan H, Kong F. Air pollution exposure and immunological and systemic inflammatory alterations among schoolchildren in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 657:1304-1310. [PMID: 30677897 DOI: 10.1016/j.scitotenv.2018.12.153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/09/2018] [Accepted: 12/10/2018] [Indexed: 05/22/2023]
Abstract
Exposure to air pollution is associated with an increased risk of respiratory infection, to which children are more susceptible than adults. However, epidemiological evidence regarding the association of chronic exposure to air pollution with the immune and systemic inflammatory function of children is scarce, especially in the context of higher exposure levels. In this study, we included 163 chronically exposed schoolchildren from a polluted area and 110 schoolchildren from a control area in Licheng district, Jinan, China. Immune biomarkers, including the absolute counts of lymphocyte subsets and the levels of immunoglobulins G, A, and M, C3, and C4 were determined. To explore the related biological process of altered immune biomarkers, 2 systemic inflammatory biomarkers, including C-reactive protein and the neutrophil-to-lymphocyte ratio, were also determined. After adjusting for confounders, the decreased B lymphocyte count (p = 0.021) and C3 and C4 levels (both p < 0.001) and the increased monocyte count (p = 0.009) and CD8+ T lymphocyte proportion (p = 0.054) were associated with living in the polluted area. Significant differences in the C4 and C3 levels between the areas were only seen in male schoolchildren and in schoolchildren without passive smoking exposure (Pinteraction = 0.036 and 0.042, respectively). The alterations in immune biomarkers suggested that air pollution-induced immunotoxic effects and relevant adaptive responses were simultaneously present in schoolchildren exposed to a higher level of air pollution. Future studies investigating the temporal patterns of these biomarkers among children are warranted.
Collapse
Affiliation(s)
- Xinwei Li
- Jinan Municipal Center for Disease Control and Prevention, Jinan, China
| | - Xiao Zhang
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | | | - Lianyu Han
- Licheng District Center for Disease Control and Prevention, Jinan, China
| | - Deping Gong
- Huaiyin District Health and Family Planning Supervision, Jinan, China
| | - Jie Li
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ting Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yanhua Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Sheng Gao
- Inner Mongolia Center for Disease Control and Prevention, Hohhot, China
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Fanling Kong
- Shandong Center for Disease Control and Prevention, Jinan, China.
| |
Collapse
|
8
|
Pałczyński C, Kupryś-Lipinska I, Wittczak T, Jassem E, Breborowicz A, Kuna P. The position paper of the Polish Society of Allergology on climate changes, natural disasters and allergy and asthma. Postepy Dermatol Alergol 2018; 35:552-562. [PMID: 30618521 PMCID: PMC6320485 DOI: 10.5114/ada.2017.71273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 09/18/2017] [Indexed: 12/25/2022] Open
Abstract
The observed global climate change is an indisputable cause of the increased frequency of extreme weather events and related natural disasters. This phenomenon is observed all over the world including Poland. Moreover, Polish citizens as tourists are also exposed to climate phenomena that do not occur in our climate zone. Extreme weather events and related disasters can have a significant impact on people with allergic diseases, including asthma. These effects may be associated with the exposure to air pollution, allergens, and specific microclimate conditions. Under the auspices of the Polish Society of Allergology, experts in the field of environmental allergy prepared a statement on climate changes, natural disasters and allergy and asthma to reduce the risk of adverse health events provoked by climate and weather factors. The guidelines contain the description of the factors related to climate changes and natural disasters affecting the course of allergic diseases, the specific microclimate conditions and the recommendations of the Polish Society of Allergology for vulnerable population, patients suffering from asthma and allergy diseases, allergologists and authorities in the event of climate and weather hazards.
Collapse
Affiliation(s)
- Cezary Pałczyński
- Department of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Lodz, Poland
| | - Izabela Kupryś-Lipinska
- Department of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Lodz, Poland
| | | | - Ewa Jassem
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Anna Breborowicz
- Department of Pediatric Pneumonolgy, Allergy and Clinical Immunology, Poznan University of Medical Sciences, Poznan, Poland
| | - Piotr Kuna
- Department of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Lodz, Poland
| |
Collapse
|
9
|
Lane AP, Truong-Tran QA, Myers A, Bickel C, Schleimer RP. Serum Amyloid A, Properdin, Complement 3, and Toll-Like Receptors are Expressed Locally in Human Sinonasal Tissue. ACTA ACUST UNITED AC 2018. [DOI: 10.1177/194589240602000122] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background There is a growing appreciation of the role that nasal mucosa plays in innate immunity. In this study, the expression of pattern recognition receptors known as toll-like receptors (TLRs) and the effector molecules complement factor 3 (C3), properdin, and serum amyloid A (SAA) were examined in human sinonasal mucosa obtained from control subjects and patients with chronic rhinosinusitis (CRS). Methods Sinonasal mucosal specimens were obtained from 20 patients with CRS and 5 control subjects. Messenger RNA (mRNA) was isolated and tested using Taqman real-time polymerase chain reaction with primer and probe sets for C3, complement factor P, and SAA. Standard polymerase chain reaction was performed for the 10 known TLRs. Immunohistochemistry was performed on the microscopic sections using antibodies against C3 Results Analysis of the sinonasal sample mRNA revealed expression of all 10 TLRs in both CRS samples and in control specimens. Expression of the three effector proteins was detected also, with the levels of mRNA for C3 generally greater than SAA and properdin in CRS patients. No significant differences were found in TLR or innate immune protein expression in normal controls. Immunohistochemical analysis of sinonasal mucosal specimens established C3 staining ranging from 20 to 85% of the epithelium present. Conclusion These studies indicate that sinonasal mucosa expresses genes involved in innate immunity including the TLRs and proteins involved in complement activation. We hypothesize that local production of complement and acute phase proteins by airway epithelium on stimulation of innate immune receptors may play an important role in host defense in the airway and, potentially, in the pathogenesis of CRS.
Collapse
Affiliation(s)
- Andrew P. Lane
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins, University School of Medicine, Baltimore, Maryland
| | - Quynh-Ai Truong-Tran
- Allergy-Immunology Division, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Allan Myers
- Johns Hopkins, Bayview Asthma and Allergy Center, Baltimore, Maryland
| | - Carol Bickel
- Johns Hopkins, Bayview Asthma and Allergy Center, Baltimore, Maryland
| | - Robert P. Schleimer
- Allergy-Immunology Division, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| |
Collapse
|
10
|
Parsel SM, Riley CA, McCoul ED. Combat zone exposure and respiratory tract disease. Int Forum Allergy Rhinol 2018; 8:964-969. [PMID: 29601152 DOI: 10.1002/alr.22123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/10/2018] [Accepted: 03/06/2018] [Indexed: 11/09/2022]
Abstract
BACKGROUND The impact of deployment to combat zones on the respiratory and sinonasal health of U.S. soldiers is an emerging public health concern. Retrospective studies have shown a correlation between deployment and development of post-deployment pathology, particularly of the aerodigestive system. Respiratory disease, including sinusitis, allergic rhinitis, and asthma, are commonly reported in soldiers deployed to the Middle East and Southwest Asia. METHODS Current literature pertaining to combat zone exposure and development of respiratory disease was retrieved using PubMed, Embase, Web of Science, and Google Scholar. RESULTS Several types of combat zone exposures exist that may play an influential role in the development of upper and lower respiratory tract diseases. Exposures including foreign dusts, harsh environments, particulate size, and close living quarters may play a causative role. The effect of combat zone exposures has been better examined for lower respiratory tract diseases; however, with the theory of the unified airway, the upper respiratory tract may also be involved. There is evidence that the upper respiratory tract is susceptible, with an increased risk for development of sinusitis and sinonasal disease; however, the quality of evidence of the present literature is generally low. CONCLUSION More research is necessary to determine a pathophysiologic mechanism between combat zone exposure and the development of sinonasal disease. Practicing otolaryngologists should be aware of the possibility of combat zone exposures that could contribute to rhinologic symptomatology.
Collapse
Affiliation(s)
- Sean M Parsel
- Department of Otolaryngology-Head and Neck Surgery, Tulane University, New Orleans, LA
| | - Charles A Riley
- Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College, New York, NY
| | - Edward D McCoul
- Department of Otorhinolaryngology-Head and Neck Surgery, Ochsner Health System, New Orleans, LA
- Ochsner Clinical School, University of Queensland School of Medicine, Brisbane, Queensland, Australia
| |
Collapse
|
11
|
Gour N, Sudini K, Khalil SM, Rule AM, Lees P, Gabrielson E, Groopman JD, Lajoie S, Singh A. Unique pulmonary immunotoxicological effects of urban PM are not recapitulated solely by carbon black, diesel exhaust or coal fly ash. ENVIRONMENTAL RESEARCH 2018; 161:304-313. [PMID: 29178979 PMCID: PMC5747992 DOI: 10.1016/j.envres.2017.10.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/12/2017] [Accepted: 10/24/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Exposure to particulate matter (PM) is increasing worldwide as a result of increased human activity, the rapid industrialization of developing countries, and effects of climate change. Adverse effects of PM on human health are well documented, and because PM exposure occurs mostly through the airways, PM has especially deleterious impact on the lungs. OBJECTIVE We investigated whether surrogate PM particles like carbon black (CB), diesel exhaust particle (DEP), coal fly ash (CFA) can recapitulate the allergic airway inflammatory response induced by urban particulate matter. METHODS We compared the pro-inflammatory potential of urban PM collected from New York (NYC) and Baltimore (Balt) with CB, DEP and CFA surrogate PM particles. Eight to ten weeks old BALB/cJ mice were exposed through the airways to particulate material, and markers of airway inflammation were determined. Specifically, we assessed cellular influx, mucus production, lung function, cytokine levels as well as immune cell profiling of the lungs. RESULTS Herein, we demonstrate that exposure to equivalent mass of stand-alone surrogate PM particles like CB, DEP and CFA, fails to induce significant airway inflammatory response seen after similar exposure to urban PMs. Specifically, we observe that PM collected from New York (NYC) and Baltimore city (Balt) triggers a mixed Th2/Th17 response accompanied by eosinophilic and neutrophilic influx, mucus production and airway hyperresponsiveness (AHR). Although the immune profile of NYC and Baltimore PMs are similar, they demonstrate considerable differences in their potency. Baltimore PM induced more robust airway inflammation, AHR, and Th2 cytokine production, possibly due to the greater metal content in Baltimore PM. CONCLUSIONS Urban particulate matter with its unique physiochemical properties and heterogeneous composition elicits a mixed Th2/Th17 allergic airway response that is not seen after similar exposures to surrogate PM particles.
Collapse
Affiliation(s)
- Naina Gour
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States; Solomon H. Snyder Department of Neuroscience, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - Kuladeep Sudini
- Department of Health, Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Syed Muaz Khalil
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - Ana M Rule
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Peter Lees
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Edward Gabrielson
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - John D Groopman
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Stephane Lajoie
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.
| | - Anju Singh
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.
| |
Collapse
|
12
|
Laumonnier Y, Wiese AV, Figge J, Karsten C. Regulation and function of anaphylatoxins and their receptors in allergic asthma. Mol Immunol 2017; 84:51-56. [PMID: 27916272 DOI: 10.1016/j.molimm.2016.11.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 11/18/2016] [Indexed: 02/08/2023]
Abstract
Allergic asthma is a disease of the airways driven by maladaptive T helper 2 (Th2) and Th17 immune response against harmless, airborne substances. The hallmarks of this disease are airway hyperresponsiveness (AHR), eosinophilic and neutrophilic airway inflammation and mucus overproduction. Distinct dendric cell (DC) subsets together with airway epithelial and pulmonary vascular endothelial cells play critical roles in allergen sensing and in driving T cell differentiation towards Th2 and Th17 effector or regulatory T cells (Treg). Previous studies suggested already a pivotal role for the anaphylatoxins (C5a, C3a) in the pathogenesis of allergic asthma. During sensitization for example it is described, that C3a promotes, whereas C5a protects from the development of maladaptive immunity during allergen sensitization. Here we will discuss the role of the anaphylatoxins (C3a, C5a) and their receptors during the pathogenesis of allergic asthma, and specifically in lung DC biology. We will also have a look on canonical and non-canonical complement activation and we will discuss novel concepts on how the adaptive immune system can regulate the function of ATRs also in the context of allergic asthma.
Collapse
Affiliation(s)
- Yves Laumonnier
- Institute for Systemic Inflammation Research, University of Lübeck, 23562 Lübeck, Germany.
| | - Anna V Wiese
- Institute for Systemic Inflammation Research, University of Lübeck, 23562 Lübeck, Germany
| | - Julia Figge
- Institute for Systemic Inflammation Research, University of Lübeck, 23562 Lübeck, Germany
| | - Christian Karsten
- Institute for Systemic Inflammation Research, University of Lübeck, 23562 Lübeck, Germany.
| |
Collapse
|
13
|
Pedullà M, Umano GR, Fierro V, Capuano F, Di Sessa A, Marzuillo P, Perrone L, Del Giudice EM. Atopy as a risk factor for subclinical hypothyroidism development in children. J Pediatr Endocrinol Metab 2017; 30:851-856. [PMID: 28727568 DOI: 10.1515/jpem-2017-0007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 04/18/2017] [Indexed: 11/15/2022]
Abstract
BACKGROUND Increased thyroid stimulating hormone (TSH) serum concentration can be a marker of subclinical hypothyroidism (SCH) or transient hyperthyrotropinemia. The aim of our study was to evaluate whether high serum TSH concentrations in allergic children could represent true SCH or isolated and transient hyperthyrotropinemia. METHODS We enrolled 620 allergic children (1.11-12.8 years) consecutively attending to our department. They were classified as atopics and non-atopics on the basis of the atopy work-up and, at baseline, they were investigated for thyroid function and low-grade inflammation state. Further, TSH was evaluated after 6 (T1) and 12 (T2) months. RESULTS Both atopics and non-atopics showed higher SCH prevalence compared to controls (p=0.0055 and p=0.02, respectively), and a significant association between atopy and SCH (OR 10.11, 95% CI 1.36-75.12) was found. Both at T1 and T2, atopics had a significant risk of developing severe SCH compared to non-atopics (RR 1.8, 95% CI 1.39-2.34 and 1.61, 95% CI 1.21-2.14; respectively). CONCLUSIONS Our data may suggest that hyperthyrotropinemia in atopic children could be used as a marker of true SCH.
Collapse
|
14
|
Verschoor A, Karsten CM, Broadley SP, Laumonnier Y, Köhl J. Old dogs-new tricks: immunoregulatory properties of C3 and C5 cleavage fragments. Immunol Rev 2017; 274:112-126. [PMID: 27782330 DOI: 10.1111/imr.12473] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The activation of the complement system by canonical and non-canonical mechanisms results in the generation of multiple C3 and C5 cleavage fragments including anaphylatoxins C3a and C5a as well as opsonizing C3b/iC3b. It is now well appreciated that anaphylatoxins not only act as pro-inflammatory mediators but as immunoregulatory molecules that control the activation status of cells and tissue at several levels. Likewise, C3b/iC3b is more than the opsonizing fragment that facilitates engulfment and destruction of targets by phagocytes. In the circulation, it also facilitates the transport and delivery of bacteria and immune complexes to phagocytes, through a process known as immune adherence, with consequences for adaptive immunity. Here, we will discuss non-classical immunoregulatory properties of C3 and C5 cleavage fragments. We highlight the influence of anaphylatoxins on Th2 and Th17 cell development during allergic asthma with a particular emphasis on their role in the modulation of CD11b+ conventional dendritic cells and monocyte-derived dendritic cells. Furthermore, we discuss the control of anaphylatoxin-mediated activation of dendritic cells and allergic effector cells by adaptive immune mechanisms that involve allergen-specific IgG1 antibodies and plasma or regulatory T cell-derived IL-10 production. Finally, we take a fresh look at immune adherence with a particular focus on the development of antibacterial cytotoxic T-cell responses.
Collapse
Affiliation(s)
- Admar Verschoor
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany.
| | - Christian M Karsten
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Steven P Broadley
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Yves Laumonnier
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Jörg Köhl
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany. .,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
| |
Collapse
|
15
|
Reinmuth-Selzle K, Kampf CJ, Lucas K, Lang-Yona N, Fröhlich-Nowoisky J, Shiraiwa M, Lakey PSJ, Lai S, Liu F, Kunert AT, Ziegler K, Shen F, Sgarbanti R, Weber B, Bellinghausen I, Saloga J, Weller MG, Duschl A, Schuppan D, Pöschl U. Air Pollution and Climate Change Effects on Allergies in the Anthropocene: Abundance, Interaction, and Modification of Allergens and Adjuvants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:4119-4141. [PMID: 28326768 PMCID: PMC5453620 DOI: 10.1021/acs.est.6b04908] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 03/07/2017] [Accepted: 03/22/2017] [Indexed: 05/13/2023]
Abstract
Air pollution and climate change are potential drivers for the increasing burden of allergic diseases. The molecular mechanisms by which air pollutants and climate parameters may influence allergic diseases, however, are complex and elusive. This article provides an overview of physical, chemical and biological interactions between air pollution, climate change, allergens, adjuvants and the immune system, addressing how these interactions may promote the development of allergies. We reviewed and synthesized key findings from atmospheric, climate, and biomedical research. The current state of knowledge, open questions, and future research perspectives are outlined and discussed. The Anthropocene, as the present era of globally pervasive anthropogenic influence on planet Earth and, thus, on the human environment, is characterized by a strong increase of carbon dioxide, ozone, nitrogen oxides, and combustion- or traffic-related particulate matter in the atmosphere. These environmental factors can enhance the abundance and induce chemical modifications of allergens, increase oxidative stress in the human body, and skew the immune system toward allergic reactions. In particular, air pollutants can act as adjuvants and alter the immunogenicity of allergenic proteins, while climate change affects the atmospheric abundance and human exposure to bioaerosols and aeroallergens. To fully understand and effectively mitigate the adverse effects of air pollution and climate change on allergic diseases, several challenges remain to be resolved. Among these are the identification and quantification of immunochemical reaction pathways involving allergens and adjuvants under relevant environmental and physiological conditions.
Collapse
Affiliation(s)
| | - Christopher J. Kampf
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- Institute
of Inorganic and Analytical Chemistry, Johannes
Gutenberg University, Mainz, 55128, Germany
| | - Kurt Lucas
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Naama Lang-Yona
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | | | - Manabu Shiraiwa
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Pascale S. J. Lakey
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Senchao Lai
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- South
China University of Technology, School of
Environment and Energy, Guangzhou, 510006, China
| | - Fobang Liu
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Anna T. Kunert
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Kira Ziegler
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Fangxia Shen
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Rossella Sgarbanti
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Bettina Weber
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Iris Bellinghausen
- Department
of Dermatology, University Medical Center, Johannes Gutenberg University, Mainz, 55131, Germany
| | - Joachim Saloga
- Department
of Dermatology, University Medical Center, Johannes Gutenberg University, Mainz, 55131, Germany
| | - Michael G. Weller
- Division
1.5 Protein Analysis, Federal Institute
for Materials Research and Testing (BAM), Berlin, 12489, Germany
| | - Albert Duschl
- Department
of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
| | - Detlef Schuppan
- Institute
of Translational Immunology and Research Center for Immunotherapy,
Institute of Translational Immunology, University Medical Center, Johannes Gutenberg University, Mainz, 55131 Germany
- Division
of Gastroenterology, Beth Israel Deaconess
Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States
| | - Ulrich Pöschl
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| |
Collapse
|
16
|
Ogino K, Nagaoka K, Okuda T, Oka A, Kubo M, Eguchi E, Fujikura Y. PM2.5-induced airway inflammation and hyperresponsiveness in NC/Nga mice. ENVIRONMENTAL TOXICOLOGY 2017; 32:1047-1054. [PMID: 27341501 DOI: 10.1002/tox.22303] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 05/22/2016] [Accepted: 05/29/2016] [Indexed: 06/06/2023]
Abstract
The allergic inflammatory effects of particulate matter (PM) 2.5, collected with the cyclone system in Yokohama city in Japan, were investigated in NC/Nga mice, which are hypersensitive to mite allergens. PM2.5 with alum was injected intraperitoneally for sensitization. Five days later, 200 μg of PM2.5 in 25 μL of saline was administered to mice intranasally five times for further sensitization. On the 11th day, PM2.5 was administered as a challenge. On the 12th day, mice were examined for airway hyperresponsiveness (AHR), the bronchoalveolar lavage fluid (BALF) cell count, mRNA expression of Th1 , Th2 cytokines, and metallothioneins in lung tissue, and histopathology. PM2.5 increased AHR, total cell numbers including eosinophils in BALF, and mRNA levels of IL-5, IL-22, eotaxin, eotaxin 2, and metallothionein 3. In PM2.5-induced lungs, inflammation was observed around the bronchus. These results demonstrate that PM2.5 alone, collected with the cyclone system in Yokohama city in Japan, induces asthma-like airway inflammation. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1047-1054, 2017.
Collapse
Affiliation(s)
- Keiki Ogino
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Kenjiro Nagaoka
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Tomoaki Okuda
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Akira Oka
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Masayuki Kubo
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Eri Eguchi
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Yoshihisa Fujikura
- Department of Molecular Anatomy, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| |
Collapse
|
17
|
Allergic environment enhances airway epithelial pro-inflammatory responses to rhinovirus infection. Clin Sci (Lond) 2017; 131:499-509. [PMID: 28115681 DOI: 10.1042/cs20160939] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/19/2017] [Accepted: 01/21/2017] [Indexed: 12/11/2022]
Abstract
Airway epithelial cells (AEC) exhibit a pro-inflammatory phenotype in patients with allergic asthma. We examined the effect of an allergic cytokine environment on the response of AEC to rhinovirus (RV), the most common trigger of acute exacerbations of asthma. Calu-3 cells, a well-differentiated human AEC line, were cultured with or without the T-helper type 2 cytokines interleukin (IL)-4 and IL-13, then stimulated with a toll-like receptor (TLR) 3 agonist (poly I:C, dsRNA) or a TLR7 agonist (imiquimod), or infected with RV 16. Expression of pro-inflammatory and antiviral mediators, and of viral pattern-recognition molecules, was assessed using nCounter assays, quantitative real-time PCR (qRT-PCR) and protein immunoassays. Both dsRNA and imiquimod stimulated expression of mRNA for IL6 and IL8 whereas expression of several chemokines and antiviral response genes was induced only by dsRNA. Conversely, expression of other cytokines and growth factors was induced only by imiquimod. RV infection not only stimulated expression of the inflammation-related genes induced by dsRNA, but also of complement factor B and the novel pro-inflammatory cytokine IL-32. In the T helper type 2 (Th2) cytokine environment, several mediators exhibited significantly enhanced expression, whereas expression of interferons was either unchanged or enhanced. The allergic environment also increased expression of pattern-recognition receptors and of intercellular adhesion molecule 1, the cell surface receptor for RV. We conclude that Th2 cytokines promote increased production of pro-inflammatory mediators by AEC following infection with RV. Increased viral entry or enhanced signalling via pattern-recognition receptors could also contribute to the exaggerated inflammatory response to RV observed in allergic asthmatics.
Collapse
|
18
|
Khan MA, Assiri AM, Broering DC. Complement mediators: key regulators of airway tissue remodeling in asthma. J Transl Med 2015; 13:272. [PMID: 26289385 PMCID: PMC4544802 DOI: 10.1186/s12967-015-0565-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 06/03/2015] [Indexed: 12/18/2022] Open
Abstract
The complement mediators are the major effectors of the immune balance, which operates at the interface between the innate and adaptive immunity, and is vital for many immunoregulatory functions. Activation of the complement cascade through the classical, alternative or lectin pathways thus generating opsonins like C3b and C5b, anaphylatoxins C3a and C5a, chemotaxin, and inflammatory mediators, which leads to cellular death. Complement mediators that accelerate the airway remodeling are not well defined; however, an uncontrolled Th2-driven adaptive immune response has been linked to the major pathophysiologic features of asthma, including bronchoconstriction, airway hyperresponsiveness, and airway inflammation. The mechanisms leading to complement mediated airway tissue remodeling, and the effect of therapy on preventing and/or reversing it are not clearly understood. This review highlights complement-mediated inflammation, and the mechanism through it triggers the airway tissue injury and remodeling in the airway epithelium that could serve as potential targets for developing a new drug to rescue the asthma patients.
Collapse
Affiliation(s)
- Mohammad Afzal Khan
- Department of Comparative Medicine, King Faisal Specialist Hospital & Research Centre, P.O. Box 3354, Riyadh, 11211 MBC-03, Kingdom of Saudi Arabia.
| | - Abdullah Mohammed Assiri
- Department of Comparative Medicine, King Faisal Specialist Hospital & Research Centre, P.O. Box 3354, Riyadh, 11211 MBC-03, Kingdom of Saudi Arabia.
| | - Dieter Clemens Broering
- Organ Transplant Centre, King Faisal Specialist Hospital & Research Centre, Riyadh, Kingdom of Saudi Arabia.
| |
Collapse
|
19
|
Yuan X, Shan M, You R, Frazier MV, Hong MJ, Wetsel RA, Drouin S, Seryshev A, MD LZS, Cornwell L, Rossen RD, Corry DB, Kheradmand F. Activation of C3a receptor is required in cigarette smoke-mediated emphysema. Mucosal Immunol 2015; 8:874-85. [PMID: 25465103 PMCID: PMC4454642 DOI: 10.1038/mi.2014.118] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 10/23/2014] [Indexed: 02/04/2023]
Abstract
Exposure to cigarette smoke can initiate sterile inflammatory responses in the lung and activate myeloid dendritic cells (mDCs) that induce differentiation of T helper type 1 (Th1) and Th17 cells in the emphysematous lungs. Consumption of complement proteins increases in acute inflammation, but the contribution of complement protein 3 (C3) to chronic cigarette smoke-induced immune responses in the lung is not clear. Here, we show that following chronic exposure to cigarette smoke, C3-deficient (C3(-/-)) mice develop less emphysema and have fewer CD11b(+)CD11c(+) mDCs infiltrating the lungs as compared with wild-type mice. Proteolytic cleavage of C3 by neutrophil elastase releases C3a, which in turn increases the expression of its receptor (C3aR) on lung mDCs. Mice deficient in the C3aR (C3ar(-/-)) partially phenocopy the attenuated responses to chronic smoke observed in C3(-/-) mice. Consistent with a role for C3 in emphysema, C3 and its active fragments are deposited on the lung tissue of smokers with emphysema, and smoke-exposed mice. Together, these findings suggest a critical role for C3a through autocrine/paracrine induction of C3aR in the pathogenesis of cigarette smoke-induced sterile inflammation and provide new therapeutic targets for the treatment of emphysema.
Collapse
Affiliation(s)
- Xiaoyi Yuan
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | - Ming Shan
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | - Ran You
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | - Michael V. Frazier
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | - Monica Jeongsoo Hong
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | - Rick A. Wetsel
- Brown Foundation Institute of Molecular Medicine-Research Center for Immunology and Autoimmune Diseases, The University of Texas Medical School at Houston, Houston TX 77030
| | - Scott Drouin
- Brown Foundation Institute of Molecular Medicine-Research Center for Immunology and Autoimmune Diseases, The University of Texas Medical School at Houston, Houston TX 77030
| | - Alexander Seryshev
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | - Li-zhen Song MD
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
| | | | - Roger D Rossen
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
- Pathology and Immunology, Baylor College of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
- Michael E DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston TX 77030
| | - David B. Corry
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
- Pathology and Immunology, Baylor College of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
- Biology of Inflammation Center, Baylor College of Medicine, Houston TX 77030
- Michael E DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston TX 77030
| | - Farrah Kheradmand
- Department of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
- Pathology and Immunology, Baylor College of Medicine, The University of Texas Medical School at Houston, Houston TX 77030
- Biology of Inflammation Center, Baylor College of Medicine, Houston TX 77030
- Michael E DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston TX 77030
| |
Collapse
|
20
|
Wang Y, Miwa T, Ducka-Kokalari B, Redai IG, Sato S, Gullipalli D, Zangrilli JG, Haczku A, Song WC. Properdin Contributes to Allergic Airway Inflammation through Local C3a Generation. THE JOURNAL OF IMMUNOLOGY 2015; 195:1171-81. [PMID: 26116506 DOI: 10.4049/jimmunol.1401819] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 05/23/2015] [Indexed: 01/04/2023]
Abstract
Complement is implicated in asthma pathogenesis, but its mechanism of action in this disease remains incompletely understood. In this study, we investigated the role of properdin (P), a positive alternative pathway complement regulator, in allergen-induced airway inflammation. Allergen challenge stimulated P release into the airways of asthmatic patients, and P levels positively correlated with proinflammatory cytokines in human bronchoalveolar lavage (BAL). High levels of P were also detected in the BAL of OVA-sensitized and challenged but not naive mice. Compared with wild-type (WT) mice, P-deficient (P(-/-)) mice had markedly reduced total and eosinophil cell counts in BAL and significantly attenuated airway hyperresponsiveness to methacholine. Ab blocking of P at both sensitization and challenge phases or at challenge phase alone, but not at sensitization phase alone, reduced airway inflammation. Conversely, intranasal reconstitution of P to P(-/-) mice at the challenge phase restored airway inflammation to wild-type levels. Notably, C3a levels in the BAL of OVA-challenged P(-/-) mice were significantly lower than in wild-type mice, and intranasal coadministration of an anti-C3a mAb with P to P(-/-) mice prevented restoration of airway inflammation. These results show that P plays a key role in allergen-induced airway inflammation and represents a potential therapeutic target for human asthma.
Collapse
Affiliation(s)
- Yuan Wang
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Takashi Miwa
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Blerina Ducka-Kokalari
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; and
| | - Imre G Redai
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; and
| | - Sayaka Sato
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Damodar Gullipalli
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | | | - Angela Haczku
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; and
| | - Wen-Chao Song
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104;
| |
Collapse
|
21
|
Park SH, Chen WC, Esmaeil N, Lucas B, Marsh LM, Reibman J, Grunig G. Interleukin 13- and interleukin 17A-induced pulmonary hypertension phenotype due to inhalation of antigen and fine particles from air pollution. Pulm Circ 2015; 4:654-68. [PMID: 25610601 DOI: 10.1086/678511] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 04/10/2014] [Indexed: 12/12/2022] Open
Abstract
Pulmonary hypertension has a marked detrimental effect on quality of life and life expectancy. In a mouse model of antigen-induced pulmonary arterial remodeling, we have recently shown that coexposure to urban ambient particulate matter (PM) significantly increased the thickening of the pulmonary arteries and also resulted in significantly increased right ventricular systolic pressures. Here we interrogate the mechanism and show that combined neutralization of interleukin 13 (IL-13) and IL-17A significantly ameliorated the increase in right ventricular systolic pressure, the circumferential muscularization of pulmonary arteries, and the molecular change in the right ventricle. Surprisingly, our data revealed a protective role of IL-17A for the antigen- and PM-induced severe thickening of pulmonary arteries. This protection was due to the inhibition of the effects of IL-13, which drove this response, and the expression of metalloelastase and resistin-like molecule α. However, the latter was redundant for the arterial thickening response. Anti-IL-13 exacerbated airway neutrophilia, which was due to a resulting excess effect of IL-17A, confirming concurrent cross inhibition of IL-13- and IL-17A-dependent responses in the lungs of animals exposed to antigen and PM. Our experiments also identified IL-13/IL-17A-independent molecular reprogramming in the lungs induced by exposure to antigen and PM, which indicates a risk for arterial remodeling and protection from arterial constriction. Our study points to IL-13- and IL-17A-coinduced inflammation as a new template for biomarkers and therapeutic targeting for the management of immune response-induced pulmonary hypertension.
Collapse
Affiliation(s)
- Sung-Hyun Park
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Wen-Chi Chen
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Nafiseh Esmaeil
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA ; Current affiliation: Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Benjamin Lucas
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Leigh M Marsh
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Joan Reibman
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA ; Pulmonary Medicine, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Gabriele Grunig
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA ; Pulmonary Medicine, Department of Medicine, New York University School of Medicine, New York, New York, USA
| |
Collapse
|
22
|
Grunig G, Marsh LM, Esmaeil N, Jackson K, Gordon T, Reibman J, Kwapiszewska G, Park SH. Perspective: ambient air pollution: inflammatory response and effects on the lung's vasculature. Pulm Circ 2014; 4:25-35. [PMID: 25006418 DOI: 10.1086/674902] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 11/11/2013] [Indexed: 12/19/2022] Open
Abstract
Particulates from air pollution are implicated in causing or exacerbating respiratory and systemic cardiovascular diseases and are thought to be among the leading causes of morbidity and mortality. However, the contribution of ambient particulate matter to diseases affecting the pulmonary circulation, the right heart, and especially pulmonary hypertension is much less documented. Our own work and that of other groups has demonstrated that prolonged exposure to antigens via the airways can cause severe pulmonary arterial remodeling. In addition, vascular changes have been well documented in a typical disease of the airways, asthma. These experimental and clinical findings link responses in the airways with responses in the lung's vasculature. It follows that particulate air pollution could cause, or exacerbate, diseases in the pulmonary circulation and associated pulmonary hypertension. This perspective details the literature for support of this concept. Data regarding the health effects of particulate matter from air pollution on the lung's vasculature, with emphasis on the lung's inflammatory responses to particulate matter deposition and pulmonary hypertension, are discussed. A deeper understanding of the health implications of exposure to ambient particulate matter will improve our knowledge of how to improve the management of lung diseases, including diseases of the pulmonary circulation. As man-made ambient particulate air pollution is typically linked to economic growth, a better understanding of the health effects of exposure to particulate air pollution is expected to integrate the global goal of achieving healthy living for all.
Collapse
Affiliation(s)
- Gabriele Grunig
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA ; Division of Pulmonary Medicine, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Leigh M Marsh
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Nafiseh Esmaeil
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA ; Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Katelin Jackson
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Terry Gordon
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Joan Reibman
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA ; Division of Pulmonary Medicine, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | | | - Sung-Hyun Park
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| |
Collapse
|
23
|
Complement components as potential therapeutic targets for asthma treatment. Respir Med 2014; 108:543-9. [PMID: 24468195 DOI: 10.1016/j.rmed.2014.01.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 12/06/2013] [Accepted: 01/07/2014] [Indexed: 01/21/2023]
Abstract
Asthma is the most common respiratory disorder, and is characterized by distal airway inflammation and hyperresponsiveness. This disease challenges human health because of its increasing prevalence, severity, morbidity, and the lack of a proper and complete cure. Asthma is characterized by T(H)2-skewed inflammation with elevated pulmonary levels of IL-4, IL-5, and IL-13 levels. Although there are early forays into targeting T(H)2 immunity, less-specific corticosteroid therapy remains the immunomodulator of choice. Innate immune injury mediated by complement components also act as potent mediators of the allergic inflammatory responses and offer a new and exciting possibility for asthma immunotherapy. The complement cascade consists of a number of plasma- and membrane-bound proteins, and the cleavage products of these proteins (C3 and C5) regulate the magnitude of adaptive immune responses. Complement protein are responsible for many pathophysiological features of asthma, including inflammatory cell infiltration, mucus secretion, increases in vascular permeability, and smooth muscle cell contraction. This review highlights the complement-mediated injury during asthma inflammation, and how blockade of active complement mediators may have therapeutic application.
Collapse
|
24
|
Chen W, Sivaprasad U, Gibson AM, Ericksen MB, Cunningham CM, Bass SA, Kinker KG, Finkelman FD, Wills-Karp M, Khurana Hershey GK. IL-13 receptor α2 contributes to development of experimental allergic asthma. J Allergy Clin Immunol 2013; 132:951-8.e1-6. [PMID: 23763980 DOI: 10.1016/j.jaci.2013.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 03/21/2013] [Accepted: 04/05/2013] [Indexed: 01/06/2023]
Abstract
BACKGROUND IL-13 receptor α2 (IL-13Rα2) binds IL-13 with high affinity and modulates IL-13 responses. There are soluble and membrane forms of IL-13Rα2 generated by alternative splicing in mice, but human subjects express only the membrane form of IL-13Rα2 (memIL-13Rα2). OBJECTIVE We determined the role of memIL-13Rα2 in the development of allergic inflammation in mouse models of asthma. METHODS IL-13Rα2-deficient and memIL-13Rα2 lung epithelium-specific transgenic mice were challenged with house dust mite (HDM). Airway hyperresponsiveness (AHR) and inflammation were assessed based on the airway pressure-time index, bronchoalveolar lavage (BAL) cell counts, and lung histology. Mucus production was determined by means of periodic acid-Schiff staining of lung sections, Western blot analysis of chloride channel calcium activated 3 (CLCA3) expression in lung homogenates, and ELISA of Muc5ac in BAL fluid. The expression of cytokines and chemokines was determined by using RT-quantitative PCR. RESULTS In IL-13Rα2-deficient mice AHR and airway inflammation were attenuated compared with levels seen in wild-type mice after HDM challenge. Lung epithelial overexpression of memIL-13Rα2 in the IL-13Rα2-deficient mice reconstituted AHR and inflammation to levels similar to those observed in HDM-challenged wild-type mice. Mucus production was attenuated in lungs from HDM-treated IL-13Rα2-deficient mice, whereas lung epithelial overexpression of memIL-13Rα2 increased mucus production. Lung epithelial overexpression of memIL-13Rα2 had no effect on levels of the soluble form of IL-13Rα2 in serum or BAL fluid and did not affect IL-13-dependent signal transducer and activator of transcription 6 activation in the lungs. CONCLUSION These data collectively support a distinct role for memIL-13Rα2 in the lung and suggest that memIL-13Rα2 might contribute to allergic inflammation.
Collapse
Affiliation(s)
- Weiguo Chen
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Schmudde I, Laumonnier Y, Köhl J. Anaphylatoxins coordinate innate and adaptive immune responses in allergic asthma. Semin Immunol 2013; 25:2-11. [PMID: 23694705 DOI: 10.1016/j.smim.2013.04.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 04/22/2013] [Indexed: 12/28/2022]
Abstract
Allergic asthma is a chronic disease of the airways in which maladaptive Th2 and Th17 immune responses drive airway hyperresponsiveness (AHR), eosinophilic and neutrophilic airway inflammation and mucus overproduction. Airway epithelial and pulmonary vascular endothelial cells in concert with different resident and monocyte-derived dendritic cells (DC) play critical roles in allergen sensing and consecutive activation of TH cells and their differentiation toward TH2 and TH17 effector or regulatory T cells (Treg). Further, myeloid-derived regulatory cells (MDRC) act on TH cells and either suppress or enhance their activation. The complement-derived anaphylatoxins (AT) C3a and C5a are generated during initial antigen encounter and regulate the development of maladaptive immunity at allergen sensitization. Here, we will review the complex role of ATs in activation and modulation of different DC populations, MDRCs and CD4⁺ TH cells. We will also discuss the potential impact of ATs on the regulation of the pulmonary stromal compartment as an important means to regulate DC functions.
Collapse
Affiliation(s)
- Inken Schmudde
- Institute for Systemic Inflammation Research, University of Lübeck, Germany
| | | | | |
Collapse
|
26
|
Complement component 3C3 and C3a receptor are required in chitin-dependent allergic sensitization to Aspergillus fumigatus but dispensable in chitin-induced innate allergic inflammation. mBio 2013; 4:mBio.00162-13. [PMID: 23549917 PMCID: PMC3622928 DOI: 10.1128/mbio.00162-13] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Levels of the anaphylatoxin C3a are increased in patients with asthma compared with those in nonasthmatics and increase further still during asthma exacerbations. However, the role of C3a during sensitization to allergen is poorly understood. Sensitization to fungal allergens, such as Aspergillus fumigatus, is a strong risk factor for the development of asthma. Exposure to chitin, a structural polysaccharide of the fungal cell wall, induces innate allergic inflammation and may promote sensitization to fungal allergens. Here, we found that coincubation of chitin with serum or intratracheal administration of chitin in mice resulted in the generation of C3a. We established a model of chitin-dependent sensitization to soluble Aspergillus antigens to test the contribution of complement to these events. C3−/− and C3aR−/− mice were protected from chitin-dependent sensitization to Aspergillus and had reduced lung eosinophilia and type 2 cytokines and serum IgE. In contrast, complement-deficient mice were not protected against chitin-induced innate allergic inflammation. In sensitized mice, plasmacytoid dendritic cells from complement-deficient animals acquired a tolerogenic profile associated with enhanced regulatory T cell responses and suppressed Th2 and Th17 responses specific for Aspergillus. Thus, chitin induces the generation of C3a in the lung, and chitin-dependent allergic sensitization to Aspergillus requires C3aR signaling, which suppresses regulatory dendritic cells and T cells and induces allergy-promoting T cells. Asthma is one of the fastest growing chronic illnesses worldwide. Chitin, a ubiquitous polymer in our environment and a key component in the cell wall of fungal spores and the exoskeletons of insects, parasites, and crustaceans, triggers innate allergic inflammation. However, there is little understanding of how chitin is initially recognized by mammals and how early recognition of chitin affects sensitization to environmental allergens and development of allergic asthma. The complement system is evolutionarily one of the oldest facets of the early or innate warning systems in mammals. We studied whether and how complement components influence the recognition of chitin and shape the downstream sensitization toward fungal allergens. We show here that complement recognition of chitin plays a critical role in shaping the behavior of dendritic cells, which in turn regulate the function of T cells that mediate allergic responses to fungi.
Collapse
|
27
|
Wang T, Wang L, Moreno-Vinasco L, Lang GD, Siegler JH, Mathew B, Usatyuk PV, Samet JM, Geyh AS, Breysse PN, Natarajan V, Garcia JGN. Particulate matter air pollution disrupts endothelial cell barrier via calpain-mediated tight junction protein degradation. Part Fibre Toxicol 2012; 9:35. [PMID: 22931549 PMCID: PMC3489700 DOI: 10.1186/1743-8977-9-35] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 06/20/2012] [Indexed: 01/26/2023] Open
Abstract
Background Exposure to particulate matter (PM) is a significant risk factor for increased cardiopulmonary morbidity and mortality. The mechanism of PM-mediated pathophysiology remains unknown. However, PM is proinflammatory to the endothelium and increases vascular permeability in vitro and in vivo via ROS generation. Objectives We explored the role of tight junction proteins as targets for PM-induced loss of lung endothelial cell (EC) barrier integrity and enhanced cardiopulmonary dysfunction. Methods Changes in human lung EC monolayer permeability were assessed by Transendothelial Electrical Resistance (TER) in response to PM challenge (collected from Ft. McHenry Tunnel, Baltimore, MD, particle size >0.1 μm). Biochemical assessment of ROS generation and Ca2+ mobilization were also measured. Results PM exposure induced tight junction protein Zona occludens-1 (ZO-1) relocation from the cell periphery, which was accompanied by significant reductions in ZO-1 protein levels but not in adherens junction proteins (VE-cadherin and β-catenin). N-acetyl-cysteine (NAC, 5 mM) reduced PM-induced ROS generation in ECs, which further prevented TER decreases and atteneuated ZO-1 degradation. PM also mediated intracellular calcium mobilization via the transient receptor potential cation channel M2 (TRPM2), in a ROS-dependent manner with subsequent activation of the Ca2+-dependent protease calpain. PM-activated calpain is responsible for ZO-1 degradation and EC barrier disruption. Overexpression of ZO-1 attenuated PM-induced endothelial barrier disruption and vascular hyperpermeability in vivo and in vitro. Conclusions These results demonstrate that PM induces marked increases in vascular permeability via ROS-mediated calcium leakage via activated TRPM2, and via ZO-1 degradation by activated calpain. These findings support a novel mechanism for PM-induced lung damage and adverse cardiovascular outcomes.
Collapse
Affiliation(s)
- Ting Wang
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
|
29
|
Wang T, Lang GD, Moreno-Vinasco L, Huang Y, Goonewardena SN, Peng YJ, Svensson EC, Natarajan V, Lang RM, Linares JD, Breysse PN, Geyh AS, Samet JM, Lussier YA, Dudley S, Prabhakar NR, Garcia JGN. Particulate matter induces cardiac arrhythmias via dysregulation of carotid body sensitivity and cardiac sodium channels. Am J Respir Cell Mol Biol 2011; 46:524-31. [PMID: 22108299 DOI: 10.1165/rcmb.2011-0213oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The mechanistic links between exposure to airborne particulate matter (PM) pollution and the associated increases in cardiovascular morbidity and mortality, particularly in people with congestive heart failure (CHF), have not been identified. To advance understanding of this issue, genetically engineered mice (CREB(A133)) exhibiting severe dilated cardiomyopathic changes were exposed to ambient PM collected in Baltimore. CREB(A133) mice, which display aberrant cardiac physiology and anatomy reminiscent of human CHF, displayed evidence of basal autonomic aberrancies (compared with wild-type mice) with PM exposure via aspiration, producing significantly reduced heart rate variability, respiratory dysynchrony, and increased ventricular arrhythmias. Carotid body afferent nerve responses to hypoxia and hyperoxia-induced respiratory depression were pronounced in PM-challenged CREB(A133) mice, and denervation of the carotid bodies significantly reduced PM-mediated cardiac arrhythmias. Genome-wide expression analyses of CREB(A133) left ventricular tissues demonstrated prominent Na(+) and K(+) channel pathway gene dysregulation. Subsequent PM challenge increased tyrosine phosphorylation and nitration of the voltage-gated type V cardiac muscle α-subunit of the Na(+) channel encoded by SCN5A. Ranolazine, a Na(+) channel modulator that reduces late cardiac Na(+) channel currents, attenuated PM-mediated cardiac arrhythmias and shortened PM-elongated QT intervals in vivo. These observations provide mechanistic insights into the epidemiologic findings in susceptibility of human CHF populations to PM exposure. Our results suggest a multiorgan pathobiology inherent to the CHF phenotype that is exaggerated by PM exposure via heightened carotid body sensitivity and cardiac Na(+) channel dysfunction.
Collapse
Affiliation(s)
- Ting Wang
- Section of Pulmonary, Critical Care, Sleep & Allergy, Department of Medicine, University of Illinois at Chicago, Illinois, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Role of thrombin-activatable fibrinolysis inhibitor in allergic bronchial asthma. Lung 2011; 190:189-98. [PMID: 22037793 DOI: 10.1007/s00408-011-9337-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Accepted: 09/29/2011] [Indexed: 01/29/2023]
Abstract
BACKGROUND Bronchial asthma is an inflammatory disease of the airways. Thrombin-activatable fibrinolysis inhibitor (TAFI) is a carboxypeptidase that besides inhibiting fibrinolysis, also regulates inflammatory processes. The only validated substrate known for TAFI is fibrin. In the present study we evaluated the role of TAFI in bronchial asthma by comparing the development of allergic bronchial asthma between wild-type (WT) and TAFI-deficient mice (KO). METHODS Asthmatic inflammation was induced by sensitization and challenge with ovalbumin in WT (WT/OVA) and TAFI KO (KO/OVA) mice. WT mice (WT/SAL) and TAFI KO (KO/SAL) were used as controls. Cytokines, markers of inflammation, and coagulation were measured in bronchoalveolar lavage fluid (BALF). RESULTS Airway hyperresponsiveness was worse in KO/OVA mice than in WT/OVA mice or control mice. Markers of lung injury were significantly increased in BALF from KO/OVA mice compared to WT/OVA mice. Airway hyperresponsiveness and the BALF concentrations of IL-5 and osteopontin were significantly increased in KO/OVA mice compared to WT/OVA mice. Treatment of WT/OVA and KO/OVA mice with a C5a receptor antagonist significantly decreased hyperresponsiveness along with the BALF concentrations of total protein and C5a compared to untreated asthmatic mice. CONCLUSION The results of this study suggest that TAFI plays a protective role in the pathogenesis of allergic inflammation probably by inhibiting the complement system.
Collapse
|
31
|
Bera MM, Lu B, Martin TR, Cui S, Rhein LM, Gerard C, Gerard NP. Th17 cytokines are critical for respiratory syncytial virus-associated airway hyperreponsiveness through regulation by complement C3a and tachykinins. THE JOURNAL OF IMMUNOLOGY 2011; 187:4245-55. [PMID: 21918196 DOI: 10.4049/jimmunol.1101789] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Respiratory syncytial virus (RSV) infection is associated with serious lung disease in infants and immunocompromised individuals and is linked to development of asthma. In mice, acute RSV infection causes airway hyperresponsiveness (AHR), inflammation, and mucus hypersecretion. Infected cells induce complement activation, producing the anaphylatoxin C3a. In this paper, we show RSV-infected wild-type mice produce Th17 cytokines, a response not previously associated with viral infections. Mice deficient in the C3aR fail to develop AHR following acute RSV infection, and production of Th17 cytokines was significantly attenuated. Tachykinin production also has been implicated in RSV pathophysiology, and tachykinin receptor-null mice were similarly protected from developing AHR. These animals were also deficient in production of Th17 cytokines. Tachykinin release was absent in mice deficient in C3aR, whereas C3a levels were unchanged in tachykinin receptor-null animals. Thus, our data reveal a crucial sequence following acute RSV infection where initial C3a production causes tachykinin release, followed by activation of the IL-17A pathway. Deficiency of either receptor affords protection from AHR, identifying two potential therapeutic targets.
Collapse
Affiliation(s)
- Monali M Bera
- Ina Sue Perlmutter Laboratory, Division of Respiratory Diseases, Department of Pediatrics, Children's Hospital, Boston, MA 02115, USA
| | | | | | | | | | | | | |
Collapse
|
32
|
An overlapping syndrome of allergy and immune deficiency in children. J Allergy (Cairo) 2011; 2012:658279. [PMID: 21918651 PMCID: PMC3171763 DOI: 10.1155/2012/658279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Revised: 05/15/2011] [Accepted: 07/10/2011] [Indexed: 12/13/2022] Open
Abstract
Recurrent airway inflammations in children are an important clinical problem in pediatric practice. An essential challenge is differentiation between allergic background and immune deficiency, which is a difficult task taking into consideration individual predisposition to atopy, immune system maturation in the early childhood, as well as exposition to environmental allergens and microbial antigens. In this paper relationship between selected elements of innate and adaptive immunity, such as pattern-recognition receptors, complement components, dendritic cells, as well as immunoglobulins, and regulatory T lymph cells has been discussed. Particular attention has been paid to these mechanisms of the immune response which, depending on settings and timing of activation, predispose to allergy or contribute to tolerogenic phenotype. In the context of multifactorial conditioning of the innate and adaptive immunity governing the ultimate response and associations between allergy and immune deficiencies, these phenomena should be considered as pathogenetically not precluding, but as an overlapping syndrome.
Collapse
|
33
|
Induced sputum proteome in healthy subjects and asthmatic patients. J Allergy Clin Immunol 2011; 128:1176-1184.e6. [PMID: 21906793 DOI: 10.1016/j.jaci.2011.07.053] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 07/22/2011] [Accepted: 07/27/2011] [Indexed: 11/21/2022]
Abstract
BACKGROUND Asthma is a heterogeneous disease characterized by abnormal airway pathophysiology and susceptibility to different stimuli, as exemplified by a subset of patients with exercise-induced bronchoconstriction. Induced sputum provides a noninvasive method to sample airway biofluids that are enriched in proteins. OBJECTIVE We hypothesized that novel mechanisms in the pathogenesis of asthma might be revealed by studying the patterns of protein expression in induced sputum. METHODS We used shotgun proteomics to analyze induced sputum from 5 healthy subjects and 10 asthmatic patients, including 5 with exercise-induced bronchoconstriction. Differential protein expression among asthmatic patients, asthma subphenotypes, and control subjects was determined by using spectral counting and computational methods. RESULTS Using Gene Ontology analysis, we defined the functional landscape of the induced sputum proteome and applied network analysis to construct a protein interaction map for this airway compartment. Shotgun proteomics analysis identified a number of proteins the differential enrichment or depletion of which robustly distinguished asthmatic patients from healthy control subjects and captured the effects of exercise on induced sputum proteome. Functional and network analysis identified key processes, including proteolytic activity, that are known contributors to airway remodeling. Importantly, this approach highlighted previously unrecognized roles for differentially expressed proteins in pathways implicated in asthma, such as modulation of phospholipase A(2) by secretoglobin, a putative role for S100A8/9 in human asthma, and selective upregulation of complement component 3a in response to exercise in asthmatic patients. CONCLUSION Computationally intensive analysis of induced sputum proteome is a powerful approach to understanding the pathophysiology of asthma and a promising methodology to investigating other diseases of the airways.
Collapse
|
34
|
The role of complement in the diagnosis and management of allergic rhinitis and allergic asthma. Curr Allergy Asthma Rep 2011; 11:122-30. [PMID: 21170614 DOI: 10.1007/s11882-010-0171-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Allergic rhinitis and asthma are common chronic inflammatory diseases of the nasal mucus membranes and the upper airways with a high prevalence in Western countries. In addition to maladaptive T-helper type 2 (Th2) immunity, Th17 cells can drive the inflammatory responses in both diseases. Several reports have shown that the complement system is activated locally and systemically in allergic rhinitis and/or allergic asthma patients. Importantly, recent findings in experimental models of allergic rhinitis and allergic asthma suggest that the complement cleavage products complement 3a and complement 5a and the activation of their corresponding receptors in antigen-presenting cells regulate the development of maladaptive Th2 and Th17 immunity. These findings in experimental asthma are corroborated by genome-wide searches and candidate gene studies in humans. We discuss recent findings in experimental and human allergic airway diseases suggesting that complement may serve as a new diagnostic and therapeutic target for both disorders.
Collapse
|
35
|
Schroer KT, Gibson AM, Sivaprasad U, Bass SA, Ericksen MB, Wills-Karp M, Lecras T, Fitzpatrick AM, Brown LAS, Stringer KF, Hershey GKK. Downregulation of glutathione S-transferase pi in asthma contributes to enhanced oxidative stress. J Allergy Clin Immunol 2011; 128:539-48. [PMID: 21570714 DOI: 10.1016/j.jaci.2011.04.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Revised: 04/12/2011] [Accepted: 04/14/2011] [Indexed: 12/31/2022]
Abstract
BACKGROUND Glutathione S-transferase pi (GSTPi) is the predominant redox regulator in the lung. Although evidence implicates an important role for GSTPi in asthma, the mechanism for this has remained elusive. OBJECTIVES We sought to determine how GSTPi is regulated in asthma and to elucidate its role in maintaining redox homeostasis. METHODS We elucidated the regulation of GSTPi in children with asthma and used murine models of asthma to determine the role of GSTPi in redox homeostasis. RESULTS Our findings demonstrate that GSTPi transcript levels are markedly downregulated in allergen- and IL-13-treated murine models of asthma through signal transducer and activator of transcription 6-dependent and independent pathways. Nuclear factor erythroid 2-related factor 2 was also downregulated in these models. The decrease in GSTPi expression was associated with decreased total glutathione S-transferase activity in the lungs of mice. Examination of cystine intermediates uncovered a functional role for GSTPi in regulating cysteine oxidation, whereby GSTPi-deficient mice exhibited increased oxidative stress (increase in percentage cystine) compared with wild-type mice after allergen challenge. GSTPi expression was similarly downregulated in children with asthma. CONCLUSIONS These data collectively suggest that downregulation of GSTPi after allergen challenge might contribute to the asthma phenotype because of disruption of redox homeostasis and increased oxidative stress. Furthermore, GSTPi might be an important therapeutic target for asthma, and evaluation of GSTPi expression might prove beneficial in identifying patients who would benefit from therapy targeting this pathway.
Collapse
Affiliation(s)
- Kathy T Schroer
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Krämer U, Herder C, Sugiri D, Strassburger K, Schikowski T, Ranft U, Rathmann W. Traffic-related air pollution and incident type 2 diabetes: results from the SALIA cohort study. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:1273-9. [PMID: 20504758 PMCID: PMC2944089 DOI: 10.1289/ehp.0901689] [Citation(s) in RCA: 275] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Accepted: 05/11/2010] [Indexed: 05/19/2023]
Abstract
BACKGROUND Cross-sectional and ecological studies indicate that air pollution may be a risk factor for type 2 diabetes, but prospective data are lacking. OBJECTIVE We examined the association between traffic-related air pollution and incident type 2 diabetes. DESIGN Between 1985 and 1994, cross-sectional surveys were performed in the highly industrialized Ruhr district (West Germany); a follow-up investigation was conducted in 2006 using data from the Study on the Influence of Air Pollution on Lung, Inflammation and Aging (SALIA) cohort. PARTICIPANTS 1,775 nondiabetic women who were 54-55 years old at baseline participated in both baseline and follow-up investigations and had complete information available. MATERIALS AND METHODS Using questionnaires, we assessed 16-year incidence (1990-2006) of type 2 diabetes and information about covariates. Complement factor C3c as marker for subclinical inflammation was measured at baseline. Individual exposure to traffic-related particulate matter (PM) and nitrogen dioxide was determined at different spatial scales. RESULTS Between 1990 and 2006, 87 (10.5%) new cases of diabetes were reported among the SALIA cohort members. The hazards for diabetes were increased by 15-42% per interquartile range of PM or traffic-related exposure. The associations persisted when different spatial scales were used to assess exposure and remained robust after adjusting for age, body mass index, socioeconomic status, and exposure to several non-traffic-related sources of air pollution. C3c was associated with PM pollution at baseline and was a strong independent predictor of incident diabetes. Exploratory analyses indicated that women with high C3c blood levels were more susceptible for PM-related excess risk of diabetes than were women with low C3c levels. CONCLUSIONS Traffic-related air pollution is associated with incident type 2 diabetes among elderly women. Subclinical inflammation may be a mechanism linking air pollution with type 2 diabetes. RELEVANCE TO CLINICAL PRACTICE Our study identifies traffic-related air pollution as a novel and potentially modifiable risk factor of type 2 diabetes.
Collapse
Affiliation(s)
- Ursula Krämer
- Institut für Umweltmedizinische Forschung (IUF), Leibniz Center at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | | | - Dorothea Sugiri
- Institut für Umweltmedizinische Forschung (IUF), Leibniz Center at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Klaus Strassburger
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Tamara Schikowski
- Institut für Umweltmedizinische Forschung (IUF), Leibniz Center at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Ulrich Ranft
- Institut für Umweltmedizinische Forschung (IUF), Leibniz Center at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Wolfgang Rathmann
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- Address correspondence to W. Rathmann, Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf’m Hennekamp 65, D-40225 Düsseldorf, Germany. Telephone: 49 211 3382 663. Fax: 49 211 3382 677. E-mail:
| |
Collapse
|
37
|
Complement-mediated regulation of the IL-17A axis is a central genetic determinant of the severity of experimental allergic asthma. Nat Immunol 2010; 11:928-35. [PMID: 20802484 PMCID: PMC2943538 DOI: 10.1038/ni.1926] [Citation(s) in RCA: 266] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Accepted: 07/29/2010] [Indexed: 01/10/2023]
Abstract
Severe asthma is associated with the production of interleukin 17A (IL-17A). The exact role of IL-17A in severe asthma and the factors that drive its production are unknown. Here we demonstrate that IL-17A mediated severe airway hyperresponsiveness (AHR) in susceptible strains of mice by enhancing IL-13-driven responses. Mechanistically, we demonstrate that IL-17A and AHR were regulated by allergen-driven production of anaphylatoxins, as mouse strains deficient in complement factor 5 (C5) or the complement receptor C5aR mounted robust IL-17A responses, whereas mice deficient in C3aR had fewer IL-17-producing helper T cells (T(H)17 cells) and less AHR after allergen challenge. The opposing effects of C3a and C5a were mediated through their reciprocal regulation of IL-23 production. These data demonstrate a critical role for complement-mediated regulation of the IL-23-T(H)17 axis in severe asthma.
Collapse
|
38
|
Rule AM, Geyh AS, Ramos-Bonilla JP, Mihalic JN, Margulies JD, Polyak LM, Kesavan J, Breysse PN. Design and characterization of a sequential cyclone system for the collection of bulk particulate matter. ACTA ACUST UNITED AC 2010; 12:1807-14. [PMID: 20676427 DOI: 10.1039/c0em00034e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we describe the design, development and characterization of a high-volume sequential cyclone system for the collection of size-segregated PM in dry bulk form from the ambient environment in sufficient quantity for physical, chemical and toxicological characterization. The first stage of the system consists of a commercially available high volume PM(10) inlet. The second stage cyclone was designed by us to collect inhalable coarse particles (<10 µm and >2.5 µm). When tested individually with a challenge aerosol, a D(50) cut-size of this stage was found to be 2.3 µm at a flow rate of 1 m(3) min(-1). The third stage, a commercially available cyclone designed for surface dust sampling, had a D(50) cut-size of 0.3 µm when tested at the same flow rate. The purpose of the third stage is to collect the fine particle portion of PM(2.5) or accumulation mode (PM <2.5 µm and >0.1 µm). Thus, the sequential cyclone system will collect bulk samples of both the inhalable coarse particles and the fine particle portion of PM(2.5). The operation and maintenance of the new system are straightforward and allow for reliable collection of dry bulk ambient PM at relatively low cost.
Collapse
Affiliation(s)
- Ana M Rule
- Dept. of Environmental Health Sciences, Johns Hopkins University, Baltimore, MD 21205, USA.
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Zhang X, Köhl J. A complex role for complement in allergic asthma. Expert Rev Clin Immunol 2010; 6:269-77. [PMID: 20402389 DOI: 10.1586/eci.09.84] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Allergic asthma is a chronic inflammatory disease of the upper airway. It is well appreciated that maladaptive Th2 immunity promotes the allergic phenotype, the underlying mechanisms of which remain elusive. The disease is associated with activation of complement, an ancient danger-sensing component of the innate immune system. Different models of experimental allergic asthma suggest that the small complement fragments of C3 and C5, the anaphylatoxins C3a and C5a, not only promote proallergic effector functions during the allergic effector phase but regulate the development of Th2 immunity during allergen sensitization. The available data support a concept in which C5a is dominant during allergen sensitization and protects against the development of maladaptive Th2 immunity. By contrast, C3a and C5a appear to act synergistically and drive allergic inflammation during the effector phase. In this article, we will review the recent findings in the field to judge the benefit of complement targeting in allergic asthma.
Collapse
Affiliation(s)
- Xun Zhang
- Division of Molecular Immunology, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, OH 45229, USA
| | | |
Collapse
|
40
|
Schlosser RJ, Mulligan RM, Casey SE, Varela JC, Harvey RJ, Atkinson C. Alterations in gene expression of complement components in chronic rhinosinusitis. Am J Rhinol Allergy 2010; 24:21-5. [PMID: 20109314 DOI: 10.2500/ajra.2010.24.3399] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND The complement cascade forms part of the initial innate response to pathogens in the airway. Complement activation is important in the maintenance of host homeostasis, but excessive and uncontrolled activation may lead to inflammation and disease. The role of the complement pathway in the innate response in chronic rhinosinusitis (CRS) is poorly characterized Methods: Sinus mucosa biopsy specimens from the anterior ethmoid or uncinate process of patients with allergic fungal rhinosinusitis (AFRS), CRS without NPs (CRS-NPs), and controls were harvested and gene and protein expression of C3, factor B (fB), C5, and C7 complement proteins were analyzed using quantitative polymerase chain reaction and immunohistochemical techniques. RESULTS fB, C3, and C5 gene expression were increased in both AFRS and CRS-NPs compared with controls (p < 0.05). Transcriptional activity for the terminal pathway protein C7 was not significantly increased when compared with controls, with C7 levels actually reduced in AFRS patients when compared with controls. Immunohistochemistry studies showed the presence of C3 and fB on the mucosal surface and in submucosa of both AFRS and CRS-NPs, but not normal controls. Terminal pathway protein C9 was not found in our specimens. CONCLUSION Both AFRS and CRS-NPs display up-regulation of the complement pathway, in particular, the alternative pathway (fB) and common pathways (C3 and C5). Enhanced innate responses as shown by alterations in complement components may play a pivotal role in the inflammatory response noted in CRS and provide potential therapeutic targets in the future.
Collapse
Affiliation(s)
- Rodney J Schlosser
- Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina, USA.
| | | | | | | | | | | |
Collapse
|
41
|
Saunders V, Breysse P, Clark J, Sproles A, Davila M, Wills-Karp M. Particulate matter-induced airway hyperresponsiveness is lymphocyte dependent. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:640-6. [PMID: 20061214 PMCID: PMC2866679 DOI: 10.1289/ehp.0901461] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Accepted: 01/08/2010] [Indexed: 05/19/2023]
Abstract
BACKGROUND Exposure to airborne particulate matter (PM), a major component of air pollution, has been associated with increases in both exacerbations of and hospitalizations for asthma. We have previously shown that exposure to ambient PM collected in urban Baltimore (AUB) induces airway hyperresponsiveness (AHR), eosinophilic and neutrophilic inflammation, and the recruitment of T cells. However, the mechanism(s) by which it induces these features of asthma remains unknown. OBJECTIVE We investigated whether T lymphocytes play a role in AUB-induced AHR. METHODS We compared the effects of AUB exposure on the allergic phenotype in wild-type (WT) BALB/c mice and in mice deficient in recombinase-activating gene-1 (Rag1-/-) that lack mature lymphocytes. RESULTS We found that exposure of WT mice to AUB induced AHR concomitant with increases in the numbers of bronchoalveolar lavage (BAL) fluid lymphocytes, eosinophils, neutrophils, and mucus-containing cells in the lungs of WT mice. Interestingly, we show for the first time that these effects were associated with significant elevations in interleukin (IL)-17A, IL-17F, and T-helper 2 cell (TH2) (IL-13, IL-5) cytokine levels in lung cells, as well as reductions in the levels of the suppressive cytokine IL-10. Interestingly, Rag1-/- mice failed to develop AUB-induced AHR; however, AUB-induced BAL fluid cellularity, and mucus cell changes were only partially inhibited in Rag1-/- mice. CONCLUSIONS Taken together, our results suggest that AUB exposure increases the pathophysiological features of asthma via activation of lymphocyte-dependent pathways. These results provide a plausible biological mechanism for the strong association between PM exposure and the increased severity of asthma.
Collapse
Affiliation(s)
- Vanessa Saunders
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Patrick Breysse
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Jennifer Clark
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Alyssa Sproles
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Melissa Davila
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Marsha Wills-Karp
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Address correspondence to M. Wills-Karp, Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, 3333 Burnet Ave., MLC 7038, Cincinnati, OH 45229 USA. Telephone: (513) 636-7641. Fax: (513) 636-5355. E-mail:
| |
Collapse
|
42
|
Bowser C, Erstein DP, Silverberg JI, Nowakowski M, Joks R. Correlation of plasma complement split product levels with allergic respiratory disease activity and relation to allergen immunotherapy. Ann Allergy Asthma Immunol 2010; 104:42-9. [PMID: 20143644 DOI: 10.1016/j.anai.2009.11.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Allergens, including dust mite and grass pollen, and mast cell tryptase are known to generate the complement split products (CSPs) C5a and C3a, which can then trigger allergic inflammation. The relation of these anaphylatoxin levels to clinical allergic disease responses is not known. OBJECTIVE To evaluate the relationship of plasma CSP levels to allergic respiratory disease variables in an adult cohort. METHODS A cross-sectional survey was used to assess the association of plasma C5a desArg and C3a desArg levels with clinical allergic respiratory disease variables. Furthermore, a time course of the effect of routine allergen immunotherapy on plasma CSP levels and cutaneous and pulmonary responses was determined. RESULTS Adult plasma C5a desArg levels correlate with asthma severity as determined by a physician (P = .01) and by Asthma Quality of Life Questionnaire scores (P < .01). Change in plasma C5a desArg levels 1 hour after immunotherapy is associated with baseline rhinoconjunctivitis symptom severity (P = .03), change in total mean wheal diameter (P = .05), and total dust mite dosage (P = .04). Change in plasma C3a desArg levels 3 hours after immunotherapy correlates with change in total mean wheal diameter induced by dust mite (P = .01). Change in plasma CSP levels after immunotherapy did not correlate with change in spirometric outcome. CONCLUSIONS Plasma C5a desArg levels reflect allergic respiratory disease severity as assessed by physicians and correlate with Asthma Quality of Life Questionnaire scores. Changes in CSP levels after immunotherapy reflect cutaneous allergic responses, especially to dust mite allergen.
Collapse
Affiliation(s)
- Corinna Bowser
- Department of Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York 11203, USA
| | | | | | | | | |
Collapse
|
43
|
Wang T, Chiang ET, Moreno-Vinasco L, Lang GD, Pendyala S, Samet JM, Geyh AS, Breysse PN, Chillrud SN, Natarajan V, Garcia JGN. Particulate matter disrupts human lung endothelial barrier integrity via ROS- and p38 MAPK-dependent pathways. Am J Respir Cell Mol Biol 2009; 42:442-9. [PMID: 19520919 DOI: 10.1165/rcmb.2008-0402oc] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Epidemiologic studies have linked exposure to airborne pollutant particulate matter (PM) with increased cardiopulmonary mortality and morbidity. The mechanisms of PM-mediated lung pathophysiology, however, remain unknown. We tested the hypothesis that PM, via enhanced oxidative stress, disrupts lung endothelial cell (EC) barrier integrity, thereby enhancing organ dysfunction. Using PM collected from Ft. McHenry Tunnel (Baltimore, MD), we assessed PM-mediated changes in transendothelial electrical resistance (TER) (a highly sensitive measure of barrier function), reactive oxygen species (ROS) generation, and p38 mitogen-activated protein kinase (MAPK) activation in human pulmonary artery EC. PM induced significant dose (10-100 microg/ml)- and time (0-10 h)-dependent EC barrier disruption reflected by reduced TER values. Exposure of human lung EC to PM resulted in significant ROS generation, which was directly involved in PM-mediated EC barrier dysfunction, as N-acetyl-cysteine (NAC, 5 mM) pretreatment abolished both ROS production and barrier disruption induced by PM. Furthermore, PM induced p38 MAPK activation and HSP27 phosphorylation, events that were both attenuated by NAC. In addition, PM-induced EC barrier disruption was partially prevented by the p38 MAP kinase inhibitor SB203580 (10 microM) as well as by reduced expression of either p38 MAPK beta or HSP27 (siRNA). These results demonstrate that PM induces ROS generation in human lung endothelium, resulting in oxidative stress-mediated EC barrier disruption via p38 MAPK- and HSP27-dependent pathways. These findings support a novel mechanism for PM-induced lung dysfunction and adverse cardiopulmonary outcomes.
Collapse
Affiliation(s)
- Ting Wang
- Department of Medicine, University of Chicago Pritzker School of Medicine, 5841 S. Maryland Avenue, W604, Chicago, IL 60637, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Camateros P, Kanagaratham C, Henri J, Sladek R, Hudson TJ, Radzioch D. Modulation of the allergic asthma transcriptome following resiquimod treatment. Physiol Genomics 2009; 38:303-18. [PMID: 19491150 DOI: 10.1152/physiolgenomics.00057.2009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Resiquimod is a compound belonging to the imidazoquinoline family of compounds known to signal through Toll-like receptor 7. Resiquimod treatment has been demonstrated to inhibit the development of allergen induced asthma in experimental models. The aim of the present study was to elucidate the molecular processes that were altered following resiquimod treatment and allergen challenge in a mouse model of allergic asthma. Employing microarray analysis, we have characterized the "asthmatic" transcriptome of the lungs of A/J and C57BL/6 mice and determined that it includes genes involved in the control of cell cycle progression, the complement and coagulation cascades, and chemokine signaling. Our results demonstrated that resiquimod treatment resulted in the normalization of the expression of genes involved with airway remodeling, and generally, chemokine signaling. Resiquimod treatment also altered the expression of cell adhesion molecules, and molecules involved in natural killer (NK) cell-mediated cytotoxicity. Furthermore, we have demonstrated that systemic resiquimod administration resulted in the recruitment of NK cells to the lungs and livers of the mice, although no causal relationship between NK cell recruitment and treatment efficacy was found. Overall, our findings identified several genes, important in the development of asthma pathology, that were normalized following resiquimod treatment, thus improving our understanding of the molecular consequences of resiquimod treatment in the lung milieu. The recruitment of NK cells to the lungs may also have application in the treatment of virally induced asthma exacerbations.
Collapse
Affiliation(s)
- Pierre Camateros
- Department of Medicine, Division of Experimental Medicine, McGill University, Montréal, Québec
| | | | | | | | | | | |
Collapse
|
45
|
Barnes KC, Grant AV, Baltadzhieva D, Zhang S, Berg T, Shao L, Zambelli-Weiner A, Anderson W, Nelsen A, Pillai S, Yarnall DP, Dienger K, Ingersoll RG, Scott AF, Fallin MD, Mathias RA, Beaty TH, Garcia JGN, Wills-Karp M. Variants in the gene encoding C3 are associated with asthma and related phenotypes among African Caribbean families. Genes Immun 2009; 7:27-35. [PMID: 16355111 DOI: 10.1038/sj.gene.6364267] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Proinflammatory and immunoregulatory products from C3 play a major role in phagocytosis, respiratory burst, and airways inflammation. C3 is critical in adaptive immunity; studies in mice deficient in C3 demonstrate that features of asthma are significantly attenuated in the absence of C3. To test the hypothesis that the C3 gene on chromosome 19p13.3-p13.2 contains variants associated with asthma and related phenotypes, we genotyped 25 single nucleotide polymorphism (SNP) markers distributed at intervals of approximately 1.9 kb within the C3 gene in 852 African Caribbean subjects from 125 nuclear and extended pedigrees. We used the multiallelic test in the family-based association test program to examine sliding windows comprised of 2-6 SNPs. A five-SNP window between markers rs10402876 and rs366510 provided strongest evidence for linkage in the presence of linkage disequilibrium for asthma, high log[total IgE], and high log[IL-13]/[log[IFN-gamma] in terms of global P-values (P = 0.00027, 0.00013, and 0.003, respectively). A three-SNP haplotype GGC for the first three of these markers showed best overall significance for the three phenotypes (P = 0.003, 0.007, 0.018, respectively) considering haplotype-specific tests. Taken together, these results implicate the C3 gene as a priority candidate controlling risk for asthma and allergic disease in this population of African descent.
Collapse
Affiliation(s)
- K C Barnes
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Rhim T, Choi YS, Nam BY, Uh ST, Park JS, Kim YH, Paik YK, Park CS. Plasma protein profiles in early asthmatic responses to inhalation allergen challenge. Allergy 2009; 64:47-54. [PMID: 19076930 DOI: 10.1111/j.1398-9995.2008.01817.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although mediators, such as lipids, cytokines, and chemokines, are related to the appearance of an IPR, there has been no reliable indicator to predict conditions for the appearance of an IPR. In this study, we adopted a proteomic approach to investigate the pathogenesis at the level of the plasma proteins and to develop plasma markers to predict the appearance of an IPR following an inhalation challenge with Dermatophagoides pteronyssinus (D.p.). Sixteen mild asthmatics were recruited. Plasma was obtained before challenge and when a decline in forced expiratory volume in 1 s (FEV(1)) values greater than 20% from the phosphate-buffered saline value was achieved during D.p. allergen challenge (positive responders), or at 60 min after the highest concentration of D.p. allergen was inhaled (negative responders). After comparing normalized volumes of the spots in the two groups, differentially expressed spots were identified using intra-gel digestion and mass spectrometric analysis. Before D.p. antigen challenge, four spots of gamma fibrinogen and its isoforms were significantly decreased and two spots of complement C3 fragments were significantly increased in the positive responders compared to the negative responders. After D.p. antigen challenge, complement C3 fragment was persistently higher, while gamma fibrinogen was lower in the positive responders than in the negative responders. A validation study using Western blotting showed that gamma fibrinogen expression in the IPR-positive asthmatics was significantly decreased compared to the average of the IPR-negative asthmatic control group. These results indicate that alterations in the complement cascade and fibrinogen may predispose patients to the appearance of an immediate response to D.p. allergen challenge and may provide plasma markers to predict the appearance of an IPR.
Collapse
Affiliation(s)
- T Rhim
- Genome Research Center for Allergy and Respiratory Diseases, Soonchunyang University Hospital, Gyeonggido, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Williams MA, Rangasamy T, Bauer SM, Killedar S, Karp M, Kensler TW, Yamamoto M, Breysse P, Biswal S, Georas SN. Disruption of the transcription factor Nrf2 promotes pro-oxidative dendritic cells that stimulate Th2-like immunoresponsiveness upon activation by ambient particulate matter. THE JOURNAL OF IMMUNOLOGY 2008; 181:4545-59. [PMID: 18802057 DOI: 10.4049/jimmunol.181.7.4545] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxidative stress is important in dendritic cell (DC) activation. Environmental particulate matter (PM) directs pro-oxidant activities that may alter DC function. Nuclear erythroid 2 p45-related factor 2 (Nrf2) is a redox-sensitive transcription factor that regulates expression of antioxidant and detoxification genes. Oxidative stress and defective antioxidant responses may contribute to the exacerbations of asthma. We hypothesized that PM would impart differential responses by Nrf2 wild-type DCs as compared with Nrf2(-/-) DCs. We found that the deletion of Nrf2 affected important constitutive functions of both bone marrow-derived and highly purified myeloid lung DCs such as the secretion of inflammatory cytokines and their ability to take up exogenous Ag. Stimulation of Nrf2(-/-) DCs with PM augmented oxidative stress and cytokine production as compared with resting or Nrf2(+/+) DCs. This was associated with the enhanced induction of Nrf2-regulated antioxidant genes. In contrast to Nrf2(+/+) DCs, coincubation of Nrf2(-/-) DCs with PM and the antioxidant N-acetyl cysteine attenuated PM-induced up-regulation of CD80 and CD86. Our studies indicate a previously underappreciated role of Nrf2 in innate immunity and suggest that deficiency in Nrf2-dependent pathways may be involved in susceptibility to the adverse health effects of air pollution in part by promoting Th2 cytokine responses in the absence of functional Nrf2. Moreover, our studies have uncovered a hierarchal response to oxidative stress in terms of costimulatory molecule expression and cytokine secretion in DCs and suggest an important role of heightened oxidative stress in proallergic Th2-mediated immune responses orchestrated by DCs.
Collapse
Affiliation(s)
- Marc A Williams
- Division of Pulmonary and Critical Care Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Wang T, Moreno-Vinasco L, Huang Y, Lang GD, Linares JD, Goonewardena SN, Grabavoy A, Samet JM, Geyh AS, Breysse PN, Lussier YA, Natarajan V, Garcia JG. Murine lung responses to ambient particulate matter: genomic analysis and influence on airway hyperresponsiveness. ENVIRONMENTAL HEALTH PERSPECTIVES 2008; 116:1500-8. [PMID: 19057703 PMCID: PMC2592270 DOI: 10.1289/ehp.11229] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Accepted: 06/19/2008] [Indexed: 05/05/2023]
Abstract
BACKGROUND Asthma is a complex disease characterized by airway hyperresponsiveness (AHR) and chronic airway inflammation. Epidemiologic studies have demonstrated that exposures to environmental factors such as ambient particulate matter (PM), a major air pollutant, contribute to increased asthma prevalence and exacerbations. OBJECTIVE We investigated pathophysiologic responses to Baltimore, Maryland, ambient PM (median diameter, 1.78 mum) in a murine model of asthma and attempted to identify PM-specific genomic/molecular signatures. METHODS We exposed ovalbumin (OVA)-sensitized A/J mice intratracheally to PM (20 mg/kg), and assayed both AHR and bronchoalveolar lavage (BAL) on days 1, 4, and 7 after PM exposure. Lung gene expression profiling was analyzed in OVA- and PM-challenged mice. RESULTS Consistent with this murine model of asthma, we observed significant increases in airway responsiveness in OVA-treated mice, with PM exposure inducing significant changes in AHR in both naive mice and OVA-induced asthmatic mice. PM evoked eosinophil and neutrophil infiltration into airways, elevated BAL protein content, and stimulated secretion of type 1 T helper (T(H)1) cytokines [interferon-gamma, interleukin-6 (IL-6), tumor necrosis factor-alpha] and T(H)2 cytokines (IL-4, IL-5, eotaxin) into murine airways. Furthermore, PM consistently induced expression of genes involved in innate immune responses, chemotaxis, and complement system pathways. CONCLUSION This study is consistent with emerging epidemiologic evidence and indicates that PM exposure evokes proinflammatory and allergic molecular signatures that may directly contribute to the asthma susceptibility in naive subjects and increased severity in affected asthmatics.
Collapse
Affiliation(s)
- Ting Wang
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Liliana Moreno-Vinasco
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Yong Huang
- Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Gabriel D. Lang
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Jered D. Linares
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Sascha N. Goonewardena
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Alayna Grabavoy
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Jonathan M. Samet
- Department of Epidemiology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Alison S. Geyh
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Patrick N. Breysse
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Yves A. Lussier
- Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Viswanathan Natarajan
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
| | - Joe G.N. Garcia
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA
- Address correspondence to J.G.N. Garcia, Department of Medicine, University of Chicago, Pritzker School of Medicine, 5841 S. Maryland Ave., W604, Chicago, IL 60637 USA. Telephone: (773) 702-1051. Fax: (773) 702-4427. E-mail:
| |
Collapse
|
49
|
Chen W, Tabata Y, Gibson AM, Daines MO, Warrier MR, Wills-Karp M, Hershey GKK. Matrix metalloproteinase 8 contributes to solubilization of IL-13 receptor alpha2 in vivo. J Allergy Clin Immunol 2008; 122:625-32. [PMID: 18694590 DOI: 10.1016/j.jaci.2008.06.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Revised: 05/09/2008] [Accepted: 06/17/2008] [Indexed: 01/08/2023]
Abstract
BACKGROUND IL-13 receptor alpha2 (IL-13R alpha 2) is a high-affinity receptor for IL-13, a central mediator of allergic asthma. It acts predominantly as a decoy receptor but can also contribute to IL-13 responses under certain conditions. IL-13R alpha 2 exists in soluble and membrane forms, which can both bind IL-13 and modulate its activity. Yet the proteolytic processes that contribute to the generation of soluble IL-13R alpha 2 are largely unknown. OBJECTIVE We sought to investigate the role of matrix metalloproteinases (MMPs) in the generation of soluble IL-13R alpha 2. METHODS Acellular cleavage assays by MMPs were performed by using glutathione-S-transferase fusion proteins of murine or human IL-13R alpha 2. IL-13R alpha 2 stable-transfected cells were used for analysis of surface expression and release of soluble IL-13R alpha 2. Wild-type and MMP-8-deficient mice were used for analysis of allergen-induced airway hyperresponsiveness and solubilization of IL-13R alpha 2. RESULTS Among several MMPs tested, only MMP-8 cleaved IL-13R alpha 2. Treatment of transfected human or murine cells expressing high levels of surface IL-13R alpha 2 with MMP-8 resulted in release of soluble IL-13R alpha 2 into the supernatants, with a concomitant decrease in surface IL-13R alpha 2 levels. The IL-13R alpha 2 solubilized by MMP-8 retained IL-13 binding activity. In an asthma model MMP-8-deficient mice displayed increased airway hyperresponsiveness and decreased soluble IL-13R alpha 2 protein levels in bronchoalveolar lavage fluid compared with those seen in wild-type mice after house dust mite challenge. CONCLUSION MMP-8 cleaves IL-13R alpha 2 in vitro and contributes to the solubilization of IL-13R alpha 2 in vivo.
Collapse
Affiliation(s)
- Weiguo Chen
- Division of Allergy and Immunology, Institute for Personalized and Predictive Medicine, Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | | | | | | | | | | | | |
Collapse
|
50
|
Zhao Y, Usatyuk PV, Gorshkova IA, He D, Wang T, Moreno-Vinasco L, Geyh AS, Breysse PN, Samet JM, Spannhake EW, Garcia JGN, Natarajan V. Regulation of COX-2 expression and IL-6 release by particulate matter in airway epithelial cells. Am J Respir Cell Mol Biol 2008; 40:19-30. [PMID: 18617679 DOI: 10.1165/rcmb.2008-0105oc] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Particulate matter (PM) in ambient air is a risk factor for human respiratory and cardiovascular diseases. The delivery of PM to airway epithelial cells has been linked to release of proinflammatory cytokines; however, the mechanisms of PM-induced inflammatory responses are not well-characterized. This study demonstrates that PM induces cyclooxygenase (COX)-2 expression and IL-6 release through both a reactive oxygen species (ROS)-dependent NF-kappaB pathway and an ROS-independent C/EBPbeta pathway in human bronchial epithelial cells (HBEpCs) in culture. Treatment of HBEpCs with Baltimore PM induced ROS production, COX-2 expression, and IL-6 release. Pretreatment with N-acetylcysteine (NAC) or EUK-134, in a dose-dependent manner, attenuated PM-induced ROS production, COX-2 expression, and IL-6 release. The PM-induced ROS was significantly of mitochondrial origin, as evidenced by increased oxidation of the mitochondrially targeted hydroethidine to hydroxyethidium by reaction with superoxide. Exposure of HBEpCs to PM stimulated phosphorylation of NF-kappaB and C/EBPbeta, while the NF-kappaB inhibitor, Bay11-7082, or C/EBPbeta siRNA attenuated PM-induced COX-2 expression and IL-6 release. Furthermore, NAC or EUK-134 attenuated PM-induced activation of NF-kappaB; however, NAC or EUK-134 had no effect on phosphorylation of C/EBPbeta. In addition, inhibition of COX-2 partly attenuated PM-induced Prostaglandin E2 and IL-6 release.
Collapse
Affiliation(s)
- Yutong Zhao
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|