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Crawford MS, Ulu A, Ramirez BM, Santos AN, Chatterjee P, Canale V, Manz S, Lei H, Nordgren TM, McCole DF. Respiratory exposure to agricultural dust extract promotes increased intestinal Tnfα expression, gut barrier dysfunction, and endotoxemia in mice. Am J Physiol Gastrointest Liver Physiol 2024; 326:G3-G15. [PMID: 37874654 DOI: 10.1152/ajpgi.00297.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/26/2023]
Abstract
Concentrated animal feeding operations (CAFOs) are responsible for the production of global greenhouse gases and harmful environmental pollutants including hydrogen sulfide, ammonia, and particulate matter. Swine farmers are frequently exposed to organic dust that is proinflammatory in the lung and are thus at greater risk of developing pneumonia, asthma, and other respiratory conditions. In addition to respiratory disease, air pollutants are directly associated with altered gastrointestinal (GI) physiology and the development of GI diseases, thereby highlighting the gut-lung axis in disease progression. Instillation of hog dust extract (HDE) for 3 wk has been reported to promote the development of chronic airway inflammation in mice, however, the impact of HDE exposure on intestinal homeostasis is poorly understood. We report that 3-wk intranasal exposure of HDE is associated with increased intestinal macromolecule permeability and elevated serum endotoxin concentrations in C57BL/6J mice. In vivo studies also indicated mislocalization of the epithelial cell adhesion protein, E-cadherin, in the colon as well as an increase in the proinflammatory cytokine, Tnfα, in the proximal colon. Moreover, mRNA expression of the Paneth cell-associated marker, Lyz1, was increased the proximal colon, whereas the expression of the goblet cell marker, Muc2, was unchanged in the epithelial cells of the ileum, cecum, and distal colon. These results demonstrate that airway exposure to CAFOs dusts promote airway inflammation and modify the gastrointestinal tract to increase intestinal permeability, induce systemic endotoxemia, and promote intestinal inflammation. Therefore, this study identifies complex physiological consequences of chronic exposure to organic dusts derived from CAFOs on the gut-lung axis.NEW & NOTEWORTHY Agricultural workers have a higher prevalence of occupational respiratory symptoms and are at greater risk of developing respiratory diseases. However, gastrointestinal complications have also been reported, yet the intestinal pathophysiology is understudied. This work is novel because it emphasizes the role of an inhaled environmental pollutant on the development of intestinal pathophysiological outcomes. This work will provide foundation for other studies evaluating how agricultural dusts disrupts host physiology and promotes debilitating gastrointestinal and systemic disorders.
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Affiliation(s)
- Meli'sa S Crawford
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Arzu Ulu
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Briana M Ramirez
- Department of Biochemistry and Molecular Biology, University of California, Riverside, California, United States
| | - Alina N Santos
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Pritha Chatterjee
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Vinicius Canale
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Salomon Manz
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Hillmin Lei
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Tara M Nordgren
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado, United States
| | - Declan F McCole
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
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Johnson AN, Dickinson J, Nelson A, Gaurav R, Kudrna K, Evans SE, Janike K, Wyatt TA, Poole JA. Effect of epithelial-specific MyD88 signaling pathway on airway inflammatory response to organic dust exposure. J Immunotoxicol 2023; 20:2148782. [PMID: 36538286 PMCID: PMC9912912 DOI: 10.1080/1547691x.2022.2148782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/11/2022] [Indexed: 12/24/2022] Open
Abstract
The Toll-like receptor (TLR) adaptor protein MyD88 is integral to airway inflammatory response to microbial-enriched organic dust extract (ODE) exposures. ODE-induced airway neutrophil influx and release of pro-inflammatory cytokines was essentially abrogated in global MyD88-deficient mice, yet these mice demonstrate an increase in airway epithelial cell mucin expression. To further elucidate the role of MyD88-dependent responses specific to lung airway epithelial cells in response to ODE in vivo, the surfactant protein C protein (SPC) Cre+ embryologic expressing airway epithelial cells floxed for MyD88 to disrupt MyD88 signaling were utilized. The inducible club cell secretory protein (CCSP) Cre+, MyD88 floxed, were also developed. Using an established protocol, mice were intranasally instilled with ODE or saline once or daily up to 3 weeks. Mice with MyD88-deficient SPC+ lung epithelial cells exhibited decreased neutrophil influx following ODE exposure once and repetitively for 1 week without modulation of classic pro-inflammatory mediators including tumor necrosis factor (TNF)-α, interleukin (IL)-6, and neutrophil chemoattractants. This protective response was lost after 3 weeks of repetitive exposure. ODE-induced Muc5ac mucin expression at 1 week was also reduced in MyD88-deficient SPC+ cells. Acute ODE-induced IL-33 was reduced in MyD88-deficient SPC+ cells whereas serum IgE levels were increased at one week. In contrast, mice with inducible MyD88-deficient CCSP+ airway epithelial cells demonstrated no significant difference in experimental indices following ODE exposure. Collectively, these findings suggest that MyD88-dependent signaling targeted to all airway epithelial cells plays an important role in mediating neutrophil influx and mucin production in response to acute organic dust exposures.
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Affiliation(s)
- Amber N. Johnson
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
| | - John Dickinson
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Amy Nelson
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Rohit Gaurav
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Katrina Kudrna
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Scott E. Evans
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Katherine Janike
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Todd A. Wyatt
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
- VA Nebraska Western Iowa Health Care System, Omaha, NE
- Department of Environmental, Agricultural and Occupational Health, UNMC, Omaha, NE
| | - Jill A. Poole
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
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3
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Patchen BK, Balte P, Bartz TM, Barr RG, Fornage M, Graff M, Jacobs DR, Kalhan R, Lemaitre RN, O'Connor G, Psaty B, Seo J, Tsai MY, Wood AC, Xu H, Zhang J, Gharib SA, Manichaikul A, North K, Steffen LM, Dupuis J, Oelsner E, Hancock DB, Cassano PA. Investigating Associations of Omega-3 Fatty Acids, Lung Function Decline, and Airway Obstruction. Am J Respir Crit Care Med 2023; 208:846-857. [PMID: 37470492 DOI: 10.1164/rccm.202301-0074oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 06/26/2023] [Indexed: 07/21/2023] Open
Abstract
Rationale: Inflammation contributes to lung function decline and the development of chronic obstructive pulmonary disease. Omega-3 fatty acids have antiinflammatory properties and may benefit lung health. Objectives: To investigate associations of omega-3 fatty acids with lung function decline and incident airway obstruction in a diverse sample of adults from general-population cohorts. Methods: Complementary study designs: 1) longitudinal study of plasma phospholipid omega-3 fatty acids and repeated FEV1 and FVC measures in the NHLBI Pooled Cohorts Study and 2) two-sample Mendelian randomization (MR) study of genetically predicted omega-3 fatty acids and lung function parameters. Measurements and Main Results: The longitudinal study found that higher omega-3 fatty acid levels were associated with attenuated lung function decline in 15,063 participants, with the largest effect sizes for the most metabolically downstream omega-3 fatty acid, docosahexaenoic acid (DHA). An increase in DHA of 1% of total fatty acids was associated with attenuations of 1.4 ml/yr for FEV1 (95% confidence interval [CI], 1.1-1.8) and 2.0 ml/yr for FVC (95% CI, 1.6-2.4) and a 7% lower incidence of spirometry-defined airway obstruction (95% CI, 0.89-0.97). DHA associations persisted across sexes and smoking histories and in Black, White, and Hispanic participants, with associations of the largest magnitude in former smokers and Hispanic participants. The MR study showed similar trends toward positive associations of genetically predicted downstream omega-3 fatty acids with FEV1 and FVC. Conclusions: The longitudinal and MR studies provide evidence supporting beneficial effects of higher levels of downstream omega-3 fatty acids, especially DHA, on lung health.
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Affiliation(s)
- Bonnie K Patchen
- Division of Nutritional Sciences, Cornell University, Ithaca, New York
| | - Pallavi Balte
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Traci M Bartz
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population Health
| | - R Graham Barr
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Myriam Fornage
- Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
| | - Mariaelisa Graff
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina
| | - David R Jacobs
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, Minnesota
| | - Ravi Kalhan
- Departments of Medicine and Preventative Medicine, Northwestern Medicine, Chicago, Illinois
| | - Rozenn N Lemaitre
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population Health
| | - George O'Connor
- Pulmonary, Allergy, Sleep and Critical Care Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Bruce Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population Health
| | - Jungkyun Seo
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina
| | - Michael Y Tsai
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - Alexis C Wood
- U.S. Department of Agriculture/Agricultural Research Service Children Nutrition Research Center, Houston, Texas
| | - Hanfei Xu
- Departments of Biostatistics and Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Jingwen Zhang
- Departments of Biostatistics and Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Sina A Gharib
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington
| | - Ani Manichaikul
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - Kari North
- Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
| | - Lyn M Steffen
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina
| | - Josée Dupuis
- U.S. Department of Agriculture/Agricultural Research Service Children Nutrition Research Center, Houston, Texas
- Department of Epidemiology, Biostatistics and Occupational Health, School of Population and Global Health, McGill University, Montréal, Québec, Canada
| | - Elizabeth Oelsner
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Dana B Hancock
- RTI International, Research Triangle Park, North Carolina; and
| | - Patricia A Cassano
- Division of Nutritional Sciences, Cornell University, Ithaca, New York
- Department of Population Health Sciences, Weill Cornell Medicine, New York, New York
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Brigham E, Hashimoto A, Alexis NE. Air Pollution and Diet: Potential Interacting Exposures in Asthma. Curr Allergy Asthma Rep 2023; 23:541-553. [PMID: 37440094 DOI: 10.1007/s11882-023-01101-1] [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] [Accepted: 05/17/2023] [Indexed: 07/14/2023]
Abstract
PURPOSE OF REVIEW To provide a review of emerging literature describing the impact of diet on the respiratory response to air pollution in asthma. RECENT FINDINGS Asthma phenotyping (observable characteristics) and endotyping (mechanistic pathways) have increased the specificity of diagnostic and treatment pathways and opened the doors to the identification of subphenotypes with enhanced susceptibility to exposures and interventions. Mechanisms underlying the airway immune response to air pollution are still being defined but include oxidative stress, inflammation, and activation of adaptive and innate immune responses, with genetic susceptibility highlighted. Of these, neutrophil recruitment and activation appear prominent; however, understanding neutrophil function in response to pollutant exposures is a research gap. Diet may play a role in asthma pathogenesis and morbidity; therefore, diet modification is a potential target opportunity to protect against pollutant-induced lung injury. In particular, in vivo and in vitro data suggest the potential for diet to modify the inflammatory response in the airways, including impacts on neutrophil recruitment and function. Murine models provide compelling results in regard to the potential for dietary components (including fiber, antioxidants, and omega-3 fatty acids) to buffer against the inflammatory response to air pollution in the lung. Precision lifestyle approaches to asthma management and respiratory protection in the context of air pollution exposures may evolve to include diet, pending the results of further epidemiologic and causal investigation and with neutrophil recruitment and activation as a candidate mechanism.
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Affiliation(s)
- Emily Brigham
- Division of Respirology, University of British Columbia, Vancouver, BC, Canada.
- Vancouver Coastal Health Research Institute, Vancouver, BC, Canada.
| | - Alisa Hashimoto
- Faculty of Science, University of British Columbia, BC, Vancouver, Canada
| | - Neil E Alexis
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
- Department of Pediatrics, Division of Allergy, Immunology, Rheumatology and Infectious Disease, University of North Carolina School of Medicine, Chapel Hill, NC, USA
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5
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Sveiven SN, Anesko K, Morgan J, Nair MG, Nordgren TM. Lipid-Sensing Receptor FFAR4 Modulates Pulmonary Epithelial Homeostasis following Immunogenic Exposures Independently of the FFAR4 Ligand Docosahexaenoic Acid (DHA). Int J Mol Sci 2023; 24:ijms24087072. [PMID: 37108233 PMCID: PMC10138935 DOI: 10.3390/ijms24087072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
The role of pulmonary free fatty acid receptor 4 (FFAR4) is not fully elucidated and we aimed to clarify the impact of FFAR4 on the pulmonary immune response and return to homeostasis. We employed a known high-risk human pulmonary immunogenic exposure to extracts of dust from swine confinement facilities (DE). WT and Ffar4-null mice were repetitively exposed to DE via intranasal instillation and supplemented with docosahexaenoic acid (DHA) by oral gavage. We sought to understand if previous findings of DHA-mediated attenuation of the DE-induced inflammatory response are FFAR4-dependent. We identified that DHA mediates anti-inflammatory effects independent of FFAR4 expression, and that DE-exposed mice lacking FFAR4 had reduced immune cells in the airways, epithelial dysplasia, and impaired pulmonary barrier integrity. Analysis of transcripts using an immunology gene expression panel revealed a role for FFAR4 in lungs related to innate immune initiation of inflammation, cytoprotection, and immune cell migration. Ultimately, the presence of FFAR4 in the lung may regulate cell survival and repair following immune injury, suggestive of potential therapeutic directions for pulmonary disease.
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Affiliation(s)
- Stefanie N Sveiven
- Division of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, CA 92521, USA
| | - Kyle Anesko
- Division of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, CA 92521, USA
| | - Joshua Morgan
- Department of Bioengineering, Bourns College of Engineering, University of California-Riverside, Riverside, CA 92521, USA
| | - Meera G Nair
- Division of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, CA 92521, USA
| | - Tara M Nordgren
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
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6
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Tang TYC, Kim JS, Das A. Role of omega-3 and omega-6 endocannabinoids in cardiopulmonary pharmacology. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2023; 97:375-422. [PMID: 37236765 DOI: 10.1016/bs.apha.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Endocannabinoids are derived from dietary omega-3 and omega-6 fatty acids and play an important role in regulation of inflammation, development, neurodegenerative diseases, cancer, and cardiovascular diseases. They elicit this effect via interactions with cannabinoid receptors 1 and 2 which are also targeted by plant derived cannabinoid from cannabis. The evidence of the involvement of the endocannabinoid system in cardiopulmonary function comes from studies that show that cannabis consumption leads to cardiovascular effect such as arrythmia and is beneficial in lung cancer patients. Moreover, omega-3 and omega-6 endocannabinoids play several important roles in cardiopulmonary system such as causing airway relaxation, suppressing atherosclerosis and hypertension. These effects are mediated via the cannabinoids receptors that are abundant in the cardiopulmonary system. Overall, this chapter reviews the known role of phytocannabinoids and endocannabinoids in the cardiopulmonary context.
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Affiliation(s)
- Tiffany Y-C Tang
- School of Chemistry and Biochemistry, College of Sciences. Georgia Institute of Technology, Parker H. Petit Institute for Bioengineering and Biosciences, Atlanta, GA, United States
| | - Justin S Kim
- School of Chemistry and Biochemistry, College of Sciences. Georgia Institute of Technology, Parker H. Petit Institute for Bioengineering and Biosciences, Atlanta, GA, United States
| | - Aditi Das
- School of Chemistry and Biochemistry, College of Sciences. Georgia Institute of Technology, Parker H. Petit Institute for Bioengineering and Biosciences, Atlanta, GA, United States.
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Heires AJ, Samuelson D, Villageliu D, Nordgren TM, Romberger DJ. Agricultural dust derived bacterial extracellular vesicle mediated inflammation is attenuated by DHA. Sci Rep 2023; 13:2767. [PMID: 36797300 PMCID: PMC9933036 DOI: 10.1038/s41598-023-29781-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
Dietary long-chain omega-3 polyunsaturated fatty acids (n-3 PUFA) and their pro-resolving metabolites are protective against atherosclerotic disease, and ameliorate systemic inflammatory conditions including lupus erythematosus, psoriasis, and bronchial asthma. Organic bioaerosol inhalation is a common and injurious hazard associated with agricultural occupations such as work in swine concentrated animal feeding operations (CAFOs) and is known to increase the risk for developing respiratory conditions such as asthma and COPD. Nearly all cells secrete membrane-bound vesicles (extracellular vesicles, EVs) that have the capacity to transmit protein, nucleic acid, and lipid signaling mediators between cells. Using a polymer-based isolation technique (ExoQuick, PEG) followed by ultracentrifugation, EVs were isolated from CAFO dust extracts, and were quantified and partially characterized. Here, we investigated the role of the n-3 PUFA docosahexaenoic acid (DHA) as a component of n-6 to n-3 PUFA mixtures used to recapitulate physiologically relevant dietary ratios in the resolution of inflammatory injury caused by exposure to EVs carried by agricultural organic dust in vitro. Primary human bronchial epithelial cells, fibroblasts and monocyte-derived macrophages were exposed to EVs isolated from swine CAFO dust. Cells were treated with mixtures of n-6 and n-3 PUFA during recovery from the EV-induced injury. CAFO dust extract (DE) was found to contain EVs that contributed significantly to the overall consequences of exposure to complete DE. DHA-rich PUFA ratios inhibited DE-derived EV-induced proinflammatory cytokine release dose-dependently. DHA-rich PUFA ratios also reversed the damaging effects of EVs on recellularization of lung matrix scaffolds, accelerated wound healing, and stimulated the release of pro-resolution mediators. These results underscore the importance of n-3 PUFA as anti-inflammatory compounds during recovery from EV-laden environmental dust exposure in the context of cellular responses in vitro, warranting future translational studies.
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Affiliation(s)
- Art J Heires
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep division, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Derrick Samuelson
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep division, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Daniel Villageliu
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep division, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Tara M Nordgren
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - Debra J Romberger
- VA Nebraska Western Iowa Health Care System, Omaha, NE, USA.
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep division, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
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Patchen BK, Balte P, Bartz TM, Barr RG, Fornage M, Graff M, Jacobs DR, Kalhan R, Lemaitre RN, O'Connor G, Psaty B, Seo J, Tsai MY, Wood AC, Xu H, Zhang J, Gharib SA, Manichaikul A, North K, Steffen LM, Dupuis J, Oelsner E, Hancock DB, Cassano PA. Investigating associations of omega-3 fatty acids, lung function decline, and airway obstruction. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.01.18.23284671. [PMID: 36711663 PMCID: PMC9882557 DOI: 10.1101/2023.01.18.23284671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Rationale Inflammation contributes to lung function decline and the development of chronic obstructive pulmonary disease. Omega-3 fatty acids have anti-inflammatory properties and may benefit lung health. Objectives Investigate associations of omega-3 fatty acids with lung function decline and incident airway obstruction in adults of diverse races/ethnicities from general population cohorts. Methods Complementary study designs: (1) longitudinal study of plasma phospholipid omega-3 fatty acids and repeated FEV 1 and FVC measures in the National Heart, Lung, and Blood Institute Pooled Cohorts Study, and (2) two-sample Mendelian Randomization (MR) study of genetically predicted omega-3 fatty acids and lung function parameters. Measurements and Main Results The longitudinal study found that higher omega-3 fatty acid concentrations were associated with attenuated lung function decline in 15,063 participants, with the largest effect sizes for docosahexaenoic acid (DHA). One standard deviation higher DHA was associated with an attenuation of 1.8 mL/year for FEV 1 (95% confidence interval [CI] 1.3-2.2) and 2.4 mL/year for FVC (95% CI 1.9-3.0). One standard deviation higher DHA was also associated with a 9% lower incidence of spirometry-defined airway obstruction (95% CI 0.86-0.97). DHA associations persisted across sexes, smoking histories, and Black, white and Hispanic participants, with the largest magnitude associations in former smokers and Hispanics. The MR study showed positive associations of genetically predicted omega-3 fatty acids with FEV 1 and FVC, with statistically significant findings across multiple MR methods. Conclusions The longitudinal and MR studies provide evidence supporting beneficial effects of higher circulating omega-3 fatty acids, especially DHA, on lung health.
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Affiliation(s)
- Bonnie K Patchen
- Division of Nutritional Sciences, Cornell University, Ithaca, NY
| | - Palavi Balte
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY
| | - Traci M Bartz
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, Health Systems and Population Health, University of Washington, Seattle, WA
| | - R Graham Barr
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY
| | - Myriam Fornage
- Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, TX
| | - Mariaelisa Graff
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC
| | - David R Jacobs
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN
| | | | - Rozenn N Lemaitre
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, Health Systems and Population Health, University of Washington, Seattle, WA
| | | | - Bruce Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, Health Systems and Population Health, University of Washington, Seattle, WA
| | - Jungkyun Seo
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC
| | - Michael Y Tsai
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN
| | - Alexis C Wood
- USDA/ARS Children's Nutrition Research Center, Houston, TX
| | - Hanfei Xu
- Boston University School of Public Health, Boston, MA
| | - Jingwen Zhang
- Boston University School of Public Health, Boston, MA
| | - Sina A Gharib
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA
| | - Ani Manichaikul
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA
| | - Kari North
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC
| | - Lyn M Steffen
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN
| | - Josée Dupuis
- Boston University School of Public Health, Boston, MA
- Department of Epidemiology, Biostatistics and Occupational Health, School of Population and Global Health, McGill University, Montréal, Québec
| | - Elizabeth Oelsner
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY
| | | | - Patricia A Cassano
- Division of Nutritional Sciences, Cornell University, Ithaca, NY
- Department of Population Health Sciences, Weill Cornell Medicine, New York, NY
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Bradshaw HB, Johnson CT. Measuring the Content of Endocannabinoid-Like Compounds in Biological Fluids: A Critical Overview of Sample Preparation Methodologies. Methods Mol Biol 2023; 2576:21-40. [PMID: 36152175 PMCID: PMC10845095 DOI: 10.1007/978-1-0716-2728-0_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Different mass spectrometric techniques have been used over the past decade to quantify endocannabinoids (eCBs) and related lipids. Even with the level of molecular fingerprinting accuracy of an instrument like the most advanced triple quadrupole mass spectrometer, if one is not getting the most optimized sample to the detector in a way that this improved technology can be of use, then advancements can be stymied. Here, our focus is on review and discussion of sample preparation methodologies used to isolate the eCB anandamide and its close congeners N-acyl ethanolamines and structural congeners (i.e., lipo amino acids, lipoamines, N-acyl amides) in biological fluids. Most of our focus will be on the analysis of these lipids in plasma/serum, but we will also discuss how the same techniques can be used for the analysis of saliva and breast milk.
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Affiliation(s)
- Heather B Bradshaw
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA.
| | - Clare T Johnson
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
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10
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Luedders J, Poole JA. Influence of Rural Environmental Factors in Asthma. Immunol Allergy Clin North Am 2022; 42:817-830. [PMID: 36265978 PMCID: PMC10884762 DOI: 10.1016/j.iac.2022.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
PURPOSE The objective of this article is to review recent literature on the implications of agricultural factors including pesticides, animal/livestock production facilities, agricultural dust, endotoxin, biomass/crop burning, and nutritional factors with respiratory health. METHODS PubMed, Embase, and CINAHL literature searches for the years 2016 to 2021 were conducted with librarian assistance. RESULTS Several studies suggest increased risk for asthma or wheeze with certain rural exposures, particularly for pesticides, livestock production facilities, agricultural dust, and biomass and crop burning. CONCLUSION A complex network of environmental factors exists, which may have detrimental effects on the respiratory health of rural residents.
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Affiliation(s)
- Jennilee Luedders
- Division of Allergy and Immunology, Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Jill A Poole
- Division of Allergy and Immunology, Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198, USA
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Ulu A, Sveiven S, Bilg A, Velazquez JV, Diaz M, Mukherjee M, Yuil-Valdes AG, Kota S, Burr A, Najera A, Nordgren TM. IL-22 regulates inflammatory responses to agricultural dust-induced airway inflammation. Toxicol Appl Pharmacol 2022; 446:116044. [PMID: 35525330 PMCID: PMC9133182 DOI: 10.1016/j.taap.2022.116044] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/21/2022] [Accepted: 04/28/2022] [Indexed: 11/26/2022]
Abstract
IL-22 is a unique cytokine that is upregulated in many chronic inflammatory diseases, including asthma, and modulates tissue responses during inflammation. However, the role of IL-22 in the resolution of inflammation and how this contributes to lung repair processes are largely unknown. Here, we tested the hypothesis that IL-22 signaling is critical in inflammation resolution after repetitive exposure to agricultural dust. Using an established mouse model of organic dust extract-induced lung inflammation, we found that IL-22 knockout mice have an enhanced response to agricultural dust as evidenced by an exacerbated increase in infiltrating immune cells and lung pathology as compared to wild-type controls. We further identified that, in response to dust, IL-22 is expressed in airway epithelium and in Ym1+ macrophages found within the parenchyma in response to dust. The increase in IL-22 expression was accompanied by increases in IL-22 receptor IL-22R1 within the lung epithelium. In addition, we found that alveolar macrophages in vivo as well as THP-1 cells in vitro express IL-22, and this expression is modulated by dust exposure. Furthermore, subcellular localization of IL-22 appears to be in the Golgi of resting THP1 human monocytes, and treatment with dust extracts is associated with IL-22 release into the cytosolic compartment from the Golgi reservoirs during dust extract exposure. Taken together, we have identified a significant role for macrophage-mediated IL-22 signaling that is activated in dust-induced lung inflammation in mice.
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Affiliation(s)
- Arzu Ulu
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Stefanie Sveiven
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Amanpreet Bilg
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Jalene V Velazquez
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Marissa Diaz
- Riverside Community College, Riverside, CA 92521, USA
| | - Maheswari Mukherjee
- Department of Medical Sciences, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Ana G Yuil-Valdes
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Santosh Kota
- Department of Preprofessional Biology, University of Florida, Gainesville, FL 32603, USA
| | - Abigail Burr
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Aileen Najera
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Tara M Nordgren
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA; Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, 80521, USA.
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Dominguez EC, Phandthong R, Nguyen M, Ulu A, Guardado S, Sveiven S, Talbot P, Nordgren TM. Aspirin-Triggered Resolvin D1 Reduces Chronic Dust-Induced Lung Pathology without Altering Susceptibility to Dust-Enhanced Carcinogenesis. Cancers (Basel) 2022; 14:cancers14081900. [PMID: 35454807 PMCID: PMC9032113 DOI: 10.3390/cancers14081900] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 02/05/2023] Open
Abstract
Simple Summary Farm workers are at an increased risk of developing acute and chronic lung inflammatory diseases from their everyday exposure to organic dust. Previous investigations have examined the inflammatory effects in mice from single and repetitive exposure to dust from swine confinement facilities, however, no study has explored these effects in a chronic model. To address this research gap, we established a chronic dust exposure mouse model of lung tumorigenesis that was also used to measure the efficacy of omega-3 fatty acid-derived lipid mediators as therapeutics for mitigating these induced responses. Our results from these investigations are the first to evaluate the chronic inflammatory, and carcinogenic effects of these dusts, as well as identify a potential therapeutic strategy for mitigating the inflammatory effects by using an omega-3 fatty acid-derived bioactive lipid mediator. Abstract Lung cancer is the leading cause of cancer-related deaths worldwide, with increased risk being associated with unresolved or chronic inflammation. Agricultural and livestock workers endure significant exposure to agricultural dusts on a routine basis; however, the chronic inflammatory and carcinogenic effects of these dust exposure is unclear. We have developed a chronic dust exposure model of lung carcinogenesis in which mice were intranasally challenged three times a week for 24 weeks, using an aqueous dust extract (HDE) made from dust collected in swine confinement facilities. We also treated mice with the omega-3-fatty acid lipid mediator, aspirin-triggered resolvin D1 (AT-RvD1) to provide a novel therapeutic strategy for mitigating the inflammatory and carcinogenic effects of HDE. Exposure to HDE resulted in significant immune cell influx into the lungs, enhanced lung tumorigenesis, severe tissue pathogenesis, and a pro-inflammatory and carcinogenic gene signature, relative to saline-exposed mice. AT-RvD1 treatment mitigated the dust-induced inflammatory response but did not protect against HDE + NNK-enhanced tumorigenesis. Our data suggest that chronic HDE exposure induces a significant inflammatory and pro-carcinogenic response, whereas treatment with AT-RvD1 dampens the inflammatory responses, providing a strong argument for the therapeutic use of AT-RvD1 to mitigate chronic inflammation.
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Affiliation(s)
- Edward C. Dominguez
- Environmental Toxicology Graduate Program, University of California Riverside, Riverside, CA 92521, USA; (E.C.D.); (P.T.)
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; (M.N.); (A.U.); (S.G.); (S.S.)
| | - Rattapol Phandthong
- Department of Molecular, Cell and Systems Biology, University of California Riverside, Riverside, CA 92521, USA;
| | - Matthew Nguyen
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; (M.N.); (A.U.); (S.G.); (S.S.)
| | - Arzu Ulu
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; (M.N.); (A.U.); (S.G.); (S.S.)
| | - Stephanie Guardado
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; (M.N.); (A.U.); (S.G.); (S.S.)
| | - Stefanie Sveiven
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; (M.N.); (A.U.); (S.G.); (S.S.)
| | - Prue Talbot
- Environmental Toxicology Graduate Program, University of California Riverside, Riverside, CA 92521, USA; (E.C.D.); (P.T.)
- Department of Molecular, Cell and Systems Biology, University of California Riverside, Riverside, CA 92521, USA;
| | - Tara M. Nordgren
- Environmental Toxicology Graduate Program, University of California Riverside, Riverside, CA 92521, USA; (E.C.D.); (P.T.)
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; (M.N.); (A.U.); (S.G.); (S.S.)
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
- Correspondence:
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13
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Abstract
PURPOSE OF REVIEW Persistent unresolved inflammation results in a number of pathologic respiratory diseases including asthma, cystic fibrosis, acute respiratory distress syndrome (ARDS) and coronavirus disease 2019 (COVID-19)-associated ARDS. Inflammation resolution is an active series of biologic processes orchestrated by a family of bioactive specialized pro-resolving mediators (SPMs) derived from essential omega-3 and omega-6 polyunsaturated fatty acids (PUFAs). In this review, we highlight recent findings on dysregulated inflammation resolution in common respiratory diseases and recent literature on SPM generation with PUFA dietary supplementation with relevance to diseases of respiratory inflammation. RECENT FINDINGS Human studies and preclinical models of diseases of lung inflammation have revealed disequilibrium in the levels of pro-inflammatory versus pro-resolving mediators. Recent studies identified actions for SPMs on regulating prophlogistic host responses and stimulating inflammation resolution pathways in inflammatory respiratory diseases. SUMMARY Dietary marine oils are enriched in PUFAs and contain parent omega-3 and omega-6 fatty acids and precursors for conversion to SPMs. Nutritional supplementation with fish oils can boost SPM levels and offer a therapeutic approach targeting inflammation resolution pathways for diseases of lung inflammation.
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Affiliation(s)
- R. Elaine Cagnina
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Melody G. Duvall
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Julie Nijmeh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Bruce D. Levy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
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14
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Ulu A, Velazquez JV, Burr A, Sveiven SN, Yang J, Bravo C, Hammock BD, Nordgren TM. Sex-Specific Differences in Resolution of Airway Inflammation in Fat-1 Transgenic Mice Following Repetitive Agricultural Dust Exposure. Front Pharmacol 2022; 12:785193. [PMID: 35095496 PMCID: PMC8793679 DOI: 10.3389/fphar.2021.785193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/23/2021] [Indexed: 11/13/2022] Open
Abstract
In agriculture industries, workers are at increased risk for developing pulmonary diseases due to inhalation of agricultural dusts, particularly when working in enclosed confinement facilities. Agricultural dusts inhalation leads to unresolved airway inflammation that precedes the development and progression of lung disease. We have previously shown beneficial effects of the omega-3 polyunsaturated fatty acid (ω-3 PUFA) DHA in protecting against the negative inflammatory effects of repetitive dust exposure in the lung. Dietary manipulation of pulmonary disease risk is an attractive and timely approach given the contribution of an increased ω-6 to ω-3 PUFA ratio to low grade inflammation and chronic disease in the Western diet. To prevent any confounding factors that comes with dietary supplementation of ω-3 PUFA (different sources, purity, dose, and duration), we employed a Fat-1 transgenic mouse model that convert ω-6 PUFA to ω-3 PUFA, leading to a tissue ω-6 to ω-3 PUFA ratio of approximately 1:1. Building on our initial findings, we hypothesized that attaining elevated tissue levels of ω-3 PUFA would attenuate agricultural dust-induced lung inflammation and its resolution. To test this hypothesis, we compared wild-type (WT) and Fat-1 transgenic mice in their response to aqueous extracts of agricultural dust (DE). We also used a soluble epoxide hydrolase inhibitor (sEH) to potentiate the effects of ω-3 PUFA, since sEH inhibitors have been shown to stabilize the anti-inflammatory P450 metabolites derived from both ω-3 and ω-6 PUFA and promote generation of specialized pro-resolving lipid mediators from ω-3 PUFA. Over a three-week period, mice were exposed to a total of 15 intranasal instillations of DE obtained from swine confinement buildings in the Midwest. We observed genotype and sex-specific differences between the WT vs. Fat-1 transgenic mice in response to repetitive dust exposure, where three-way ANOVA revealed significant main effects of treatment, genotype, and sex. Also, Fat-1 transgenic mice displayed reduced lymphoid aggregates in the lung following DE exposure as compared to WT animals exposed to DE, suggesting improved resilience to the DE-induced inflammatory effects. Overall, our data implicate a protective role of ω-3 FA in the lung following repetitive dust exposure.
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Affiliation(s)
- Arzu Ulu
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States
| | - Jalene V Velazquez
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States
| | - Abigail Burr
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States
| | - Stefanie N Sveiven
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States
| | - Jun Yang
- Department of Entomology and Nematology, University of California Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States
| | - Carissa Bravo
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States
| | - Bruce D Hammock
- Department of Entomology and Nematology, University of California Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States
| | - Tara M Nordgren
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States.,Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, United States
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