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Brownell J, Lee KE, Chasman D, Gangnon R, Bendixsen CG, Barnes K, Grindle K, Pappas T, Bochkov YA, Dresen A, Hou C, Haslam DB, Seroogy CM, Ong IM, Gern JE. Farm animal exposure, respiratory illnesses, and nasal cell gene expression. J Allergy Clin Immunol 2024; 153:1647-1654. [PMID: 38309597 PMCID: PMC11162314 DOI: 10.1016/j.jaci.2024.01.019] [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: 05/16/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/05/2024]
Abstract
BACKGROUND Farm exposures in early life reduce the risks for childhood allergic diseases and asthma. There is less information about how farm exposures relate to respiratory illnesses and mucosal immune development. OBJECTIVE We hypothesized that children raised in farm environments have a lower incidence of respiratory illnesses over the first 2 years of life than nonfarm children. We also analyzed whether farm exposures or respiratory illnesses were related to patterns of nasal cell gene expression. METHODS The Wisconsin Infant Study Cohort included farm (n = 156) and nonfarm (n = 155) families with children followed to age 2 years. Parents reported prenatal farm and other environmental exposures. Illness frequency and severity were assessed using illness diaries and periodic surveys. Nasopharyngeal cell gene expression in a subset of 64 children at age 2 years was compared to farm exposure and respiratory illness history. RESULTS Farm versus nonfarm children had nominally lower rates of respiratory illnesses (rate ratio 0.82 [95% CI, 0.69, 0.97]) with a stepwise reduction in illness rates in children exposed to 0, 1, or ≥2 animal species, but these trends were nonsignificant in a multivariable model. Farm exposures and preceding respiratory illnesses were positively related to nasal cell gene signatures for mononuclear cells and innate and antimicrobial responses. CONCLUSIONS Maternal and infant exposure to farms and farm animals was associated with nonsignificant trends for reduced respiratory illnesses. Nasal cell gene expression in a subset of children suggests that farm exposures and respiratory illnesses in early life are associated with distinct patterns of mucosal immune expression.
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Affiliation(s)
- Joshua Brownell
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wis
| | - Kristine E Lee
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wis
| | - Deborah Chasman
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wis; Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, Wis
| | - Ronald Gangnon
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wis
| | - Casper G Bendixsen
- National Farm Medicine Center, Marshfield Clinic Research Institute, Marshfield, Wis
| | - Katherine Barnes
- National Farm Medicine Center, Marshfield Clinic Research Institute, Marshfield, Wis
| | - Kristine Grindle
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wis
| | - Tressa Pappas
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wis
| | - Yury A Bochkov
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wis
| | - Amy Dresen
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wis
| | - Christine Hou
- Department of Statistics, University of Wisconsin-Madison, Madison
| | - David B Haslam
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio
| | | | - Irene M Ong
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wis; Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, Wis
| | - James E Gern
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wis.
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Zhang Y, Si L, Gao J, Shu X, Qiu C, Zhang Y, Zu S, Hu H. Serial passage of PDCoV in cell culture reduces its pathogenicity and its damage of gut microbiota homeostasis in piglets. mSystems 2024; 9:e0134623. [PMID: 38349151 PMCID: PMC10949489 DOI: 10.1128/msystems.01346-23] [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: 12/14/2023] [Accepted: 01/10/2024] [Indexed: 03/20/2024] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an enteropathogenic coronavirus that mainly causes diarrhea in suckling piglets, and also has the potential for cross-species transmission. However, there are still no commercial vaccines available to prevent and control PDCoV infection. In this study, PDCoV strain HNZK-02 was serially propagated in vitro for up to 150 passages and the amino acid changes have mainly occurred in the S protein during serial passage which caused structure change. PDCoV HNZK-02-passage 5 (P5)-infected piglets exhibited acute and severe watery diarrhea, an obvious intestinal damage, while the piglets infected with PDCoV HNZK-02-P150 showed no obvious clinical signs, weak intestinal lesions, and lower viral loads in rectal swabs and various tissues. Compared with the PDCoV HNZK-02-P5 infection, HNZK-02-P150 infection resulted in a decrease in intestinal mucosal permeability and pro-inflammatory cytokines. Moreover, PDCoV HNZK-02-P5 infection had significantly reduced bacterial diversity and increased relative abundance of opportunistic pathogens, while PDCoV HNZK-02-P150 infection did not significantly affect the bacterial diversity, and the relative abundance of probiotics increased. Furthermore, the alterations of gut microbiota were closely related to the change of pro-inflammatory factor. Metagenomics prediction analysis demonstrated that HNZK-02-P150 modulated the tyrosine metabolism, Nucleotide-binding and oligomerization domain (NOD)-like receptor signaling pathway, and lipopolysaccharide biosynthesis, which coincided with lower inflammatory response and intestinal permeability in the piglets infected with HNZK-02-P150. In conclusion, the PDCoV HNZK-02 was successfully attenuated by serial passage in vitro, and the changes of S gene, metabolic function, and gut microbiota may contribute to the attenuation. The PDCoV HNZK-02-P150 may have the potential for developing live-attenuated vaccine.IMPORTANCEPorcine deltacoronavirus (PDCoV) is an enteropathogen causing severe diarrhea, dehydration, and death in nursing piglets, devastating great economic losses for the global swine industry, and has cross-species transmission and zoonotic potential. There are currently no approved treatments or vaccines available for PDCoV. In addition, gut microbiota has an important relationship with the development of many diseases. Here, the PDCoV virulent HNZK-02 strain was successfully attenuated by serial passage on cell cultures, and the pathogenesis and effects on the gut microbiota composition and metabolic function of the PDCoV HNZK-02-P5 and P150 strains were investigated in piglets. We also found the genetic changes in the S protein during passage in vitro and the gut microbiota may contribute to the pathogenesis of PDCoV, while their interaction molecular mechanism would need to be explored further.
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Affiliation(s)
- Yunfei Zhang
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Lulu Si
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Junlong Gao
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Xiangli Shu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Congrui Qiu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yue Zhang
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou, Henan, China
| | - Shaopo Zu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou, Henan, China
| | - Hui Hu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou, Henan, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, Henan, China
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3
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Kamel MA, Selim ES, Tantawy EA, Elgendy A, Abdulmageed A, Anis RH. Association of serum CD14 level and functional polymorphism C-159T in the promoter region of CD14 gene with allergic rhinitis. Clin Exp Med 2023; 23:4861-4869. [PMID: 37286630 PMCID: PMC10725389 DOI: 10.1007/s10238-023-01097-y] [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: 02/02/2023] [Accepted: 05/20/2023] [Indexed: 06/09/2023]
Abstract
Allergic rhinitis (AR) is an inflammatory disease of the upper respiratory tract affecting a significant number of the world's population. It occurs as an IgE-mediated immune response of the nasal mucosa to inhaled allergens. The human Cluster of Differentiation 14 (CD14) is a glycosyl-phosphatidylinositol-anchored molecule expressed on the surface of monocytes and macrophages and functions as a receptor to lipopolysaccharides and inhaled endotoxins that may stimulate interleukins production by antigen-presenting cells. Consequently, CD14 plays a substantial role in allergic diseases and may become one of their etiological causes. This study aimed to determine the association between C-159T polymorphism in the CD14 gene promoter region and serum CD14 levels and the risk of Allergic rhinitis Egyptian patients and to test the validity of serum CD14 level measurement in predicting AR. This case-control study included 45 patients with AR referred to Allergy and Immunology Unit, Zagazig University Hospital, Zagazig, Egypt, and 45 healthy subjects as controls. Serum CD14 levels were measured by ELISA. The polymerase chain reaction-restriction fragment length polymorphism technique was used to detect C-159T gene polymorphism in the CD14 promoter region. There was a significant association between CD14 serum levels and AR incidence (P < 0.001), with patients having higher serum CD14 levels than controls. In addition, a significant association (P < 0.001) was detected between serum CD14 levels and the severity of AR, as well as elevated serum CD14 levels in severe and the most severe cases. On the molecular level, there was a statistically significant relationship between patients and the control group regarding the CD14 genotype (P < 0.001), where CT and TT genotypes and T allele were primarily associated with the cases group, indicating that the risk of AR was significantly associated with the inheritance of the TT genotype. Additionally, a statistically significant association was found between the severity of AR and CD14 genotype (P < 0.001), where TT genotypes were mainly associated with severe and the most severe cases. In the studied groups, there was a statistically significant difference (P < 0.05) between the CD14 genotype and serum CD14 levels, with TT genotypes being associated with higher CD14 levels. The results obtained in this study revealed that serum CD14 level is a potential biomarker for the diagnosis of AR and, at the genetic level, a potential predictor of disease.
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Affiliation(s)
- Mai A Kamel
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Elham S Selim
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Enas A Tantawy
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Aya Elgendy
- Internal Medicine/Allergy and Clinical Immunology Department, Faculty of Medicine, Ain Shams University, Cairo, 11591, Abbasia, Egypt.
| | - Alsayed Abdulmageed
- Department of Otorhinolaryngology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Reham H Anis
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Vercelli D. From Amish farm dust to bacterial lysates: The long and winding road to protection from allergic disease. Semin Immunol 2023; 68:101779. [PMID: 37210851 PMCID: PMC10330614 DOI: 10.1016/j.smim.2023.101779] [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] [Indexed: 05/23/2023]
Abstract
Allergic diseases typically begin in early life and can impose a heavy burden on children and their families. Effective preventive measures are currently unavailable but may be ushered in by studies on the "farm effect", the strong protection from asthma and allergy found in children born and raised on traditional farms. Two decades of epidemiologic and immunologic research have demonstrated that this protection is provided by early and intense exposure to farm-associated microbes that target primarily innate immune pathways. Farm exposure also promotes timely maturation of the gut microbiome, which mediates a proportion of the protection conferred by the farm effect. Current research seeks to identify allergy-protective compounds from traditional farm environments, but standardization and regulation of such substances will likely prove challenging. On the other hand, studies in mouse models show that administration of standardized, pharmacological-grade lysates of human airway bacteria abrogates allergic lung inflammation by acting on multiple innate immune targets, including the airway epithelium/IL-33/ILC2 axis and dendritic cells whose Myd88/Trif-dependent tolerogenic reprogramming is sufficient for asthma protection in adoptive transfer models. To the extent that these bacterial lysates mimic the protective effects of natural exposure to microbe-rich environments, these agents might provide an effective tool for prevention of allergic disease.
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Affiliation(s)
- Donata Vercelli
- Department of Cellular and Molecular Medicine, Asthma & Airway Disease Research Center, The BIO5 Institute, and The Arizona Center for the Biology of Complex Diseases, The University of Arizona, Tucson, AZ, USA.
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5
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León B. Understanding the development of Th2 cell-driven allergic airway disease in early life. FRONTIERS IN ALLERGY 2023; 3:1080153. [PMID: 36704753 PMCID: PMC9872036 DOI: 10.3389/falgy.2022.1080153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/21/2022] [Indexed: 01/12/2023] Open
Abstract
Allergic diseases, including atopic dermatitis, allergic rhinitis, asthma, and food allergy, are caused by abnormal responses to relatively harmless foreign proteins called allergens found in pollen, fungal spores, house dust mites (HDM), animal dander, or certain foods. In particular, the activation of allergen-specific helper T cells towards a type 2 (Th2) phenotype during the first encounters with the allergen, also known as the sensitization phase, is the leading cause of the subsequent development of allergic disease. Infants and children are especially prone to developing Th2 cell responses after initial contact with allergens. But in addition, the rates of allergic sensitization and the development of allergic diseases among children are increasing in the industrialized world and have been associated with living in urban settings. Particularly for respiratory allergies, greater susceptibility to developing allergic Th2 cell responses has been shown in children living in urban environments containing low levels of microbial contaminants, principally bacterial endotoxins [lipopolysaccharide (LPS)], in the causative aeroallergens. This review highlights the current understanding of the factors that balance Th2 cell immunity to environmental allergens, with a particular focus on the determinants that program conventional dendritic cells (cDCs) toward or away from a Th2 stimulatory function. In this context, it discusses transcription factor-guided functional specialization of type-2 cDCs (cDC2s) and how the integration of signals derived from the environment drives this process. In addition, it analyzes observational and mechanistic studies supporting an essential role for innate sensing of microbial-derived products contained in aeroallergens in modulating allergic Th2 cell immune responses. Finally, this review examines whether hyporesponsiveness to microbial stimulation, particularly to LPS, is a risk factor for the induction of Th2 cell responses and allergic sensitization during infancy and early childhood and the potential factors that may affect early-age response to LPS and other environmental microbial components.
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Affiliation(s)
- Beatriz León
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
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6
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Smout J, Valentin C, Delbauve S, Pauwels J, Köhler A, Flamand V. Maternal Lactobacillus rhamnosus administration impacts neonatal CD4 T-cell activation and prevents murine T helper 2-type allergic airways disease. Front Immunol 2023; 13:1082648. [PMID: 36685549 PMCID: PMC9847498 DOI: 10.3389/fimmu.2022.1082648] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Gut microbiota plays a role in the neonatal immune education and could influence susceptibility to Th2-type immune disorders, such as allergies, the most prevalent chronic diseases in early childhood. We studied the impact of oral Lactobacillus rhamnosus (L.rhamnosus) supplementation to pregnant/breastfeeding C57BL/6 mice on the development of allergic airways disease in their offspring. We observed that mice, from L.rhamnosus-treated mothers, inoculated with ovalbumin (OVA)-Aluminium hydroxide (ALUM) at 3 days of life and challenged intranasally 4 weeks later showed decreased Th2-associated cytokines, IgE and IgG1, lung eosinophilia and airway hyper-reactivity compared to OVA-sensitized mice from untreated mothers. In that setting, the L.rhamnosus treatment increased the number and maturation of splenic neonatal type 1 conventional dendritic cells (cDC1) that remained largely dominant over the cDC2 and favored their OVA-specific Th1 differentiation. In response to inhaled house dust mite (HDM) allergen, the maternal L.rhamnosus supplementation increased the number of neonatal pulmonary cDC1 expressing lower amount of costimulatory molecules compared with no supplementation and decreased the number of cDC2 without affecting their costimulatory molecules expression. An HDM-specific Foxp3+RORγt+ Treg polarization was monitored in the lung draining lymph nodes. Finally, we confirmed the inhibitory effect of maternal L.rhamnosus treatment on all the measured features of the HDM allergic airways reaction in their offspring. We conclude that maternal L.rhamnosus administration prevents Th2-type allergic airways disease in their neonates by favoring splenic cDC1/Th1 responses against ALUM-adjuvanted OVA or by promoting a pulmonary Foxp3+RORγt+ Treg activation against inhaled HDM.
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Affiliation(s)
- Justine Smout
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium,ULB Center for Research in Immunology (U-CRI), Université Libre de Bruxelles, Gosselies, Belgium
| | - Clara Valentin
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium,ULB Center for Research in Immunology (U-CRI), Université Libre de Bruxelles, Gosselies, Belgium
| | - Sandrine Delbauve
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium,ULB Center for Research in Immunology (U-CRI), Université Libre de Bruxelles, Gosselies, Belgium
| | - Jeanne Pauwels
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium,ULB Center for Research in Immunology (U-CRI), Université Libre de Bruxelles, Gosselies, Belgium
| | - Arnaud Köhler
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium,ULB Center for Research in Immunology (U-CRI), Université Libre de Bruxelles, Gosselies, Belgium
| | - Véronique Flamand
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium,ULB Center for Research in Immunology (U-CRI), Université Libre de Bruxelles, Gosselies, Belgium,*Correspondence: Véronique Flamand,
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7
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Home Dust Mites Promote MUC5AC Hyper-Expression by Modulating the sNASP/TRAF6 Axis in the Airway Epithelium. Int J Mol Sci 2022; 23:ijms23169405. [PMID: 36012669 PMCID: PMC9408837 DOI: 10.3390/ijms23169405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 11/25/2022] Open
Abstract
House dust mites (HDMs) are a common source of respiratory allergens responsible for allergic asthma and innate immune responses in human diseases. Since HDMs are critical factors in the triggering of allergen-induced airway mucosa from allergic asthma, we aimed to investigate the mechanisms of Toll-like receptors (TLR) in the signaling of the HDM extract that is involved in mucus hypersecretion and airway inflammation through the engagement of innate immunity. Previously, we reported that the somatic nuclear autoantigenic sperm protein (sNASP)/tumor necrosis factor receptor-associated factor 6 (TRAF6) axis controls the initiation of TLRs to maintain the homeostasis of the innate immune response. The present study showed that the HDM extract stimulated the biogenesis of Mucin 5AC (MUC5AC) in bronchial epithelial cells via the TLR2/4 signaling pathway involving MyD88 and TRAF6. Specifically, sNASP binds to TRAF6 in unstimulated bronchial epithelial cells to prevent the activation of TRAF6-depenedent kinases. Upon on HDMs’ stimulation, sNASP is phosphorylated, leading to the activation of TRAF6 downstream of the p38 MAPK and NF-κB signaling pathways. Further, NASP-knockdown enhanced TRAF6 signaling and MUC5AC biogenesis. In the HDM-induced mouse asthma model, we found that the HDM extract promoted airway hyperresponsiveness (AHR), MUC5AC, and allergen-specific IgE production as well as IL-5 and IL-13 for recruiting inflammatory cells. Treatment with the PEP-NASP peptide, a selective TRAF6-blocking peptide, ameliorated HDM-induced asthma in mice. In conclusion, this study indicated that the sNASP/TRAF6 axis plays a regulatory role in asthma by modulating mucus overproduction, and the PEP-NASP peptide might be a potential target for asthma treatment.
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8
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Frei R, Heye K, Roduit C. Environmental influences on childhood allergies and asthma - The Farm effect. Pediatr Allergy Immunol 2022; 33:e13807. [PMID: 35754122 PMCID: PMC9327508 DOI: 10.1111/pai.13807] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 12/12/2022]
Abstract
Asthma and allergies are major health problems and exert an enormous socioeconomic burden. Besides genetic predisposition, environmental factors play a crucial role in the development of these diseases in childhood. Multiple worldwide epidemiological studies have shown that children growing up on farms are immune to allergic diseases and asthma. Farm-related exposures shape children's immune homeostasis, via mediators such as N-glycolylneuraminic acid or arabinogalactan, or by diverse environmental microbes. Moreover, nutritional factors, such as breastfeeding or farm milk and food diversity, inducing short-chain fatty acids-producing bacteria in the intestine, contribute to farm-related effects. All farm-related exposures induce an anti-inflammatory response of the innate immunity and increase the differentiation of regulatory T cells and T helper cell type 1. A better understanding of the components of the farm environment, that are protective to the development of allergy and asthma, and their underlying mechanisms, will help to develop new strategies for the prevention of allergy and asthma.
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Affiliation(s)
- Remo Frei
- Division of Paediatric Respiratory Medicine and Allergology, Department of Pediatrics, Inselspital, Bern University Hospital and Department for BioMedical Research, University of Bern, Bern, Switzerland.,Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Kristina Heye
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Children's Hospital of Eastern Switzerland, St Gallen, Switzerland
| | - Caroline Roduit
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Children's Hospital of Eastern Switzerland, St Gallen, Switzerland.,University Children's Hospital Zurich, Zurich, Switzerland
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9
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Lauzon-Joset JF, Mincham KT, Scott NM, Khandan Y, Stumbles PA, Holt PG, Strickland DH. Protection against neonatal respiratory viral infection via maternal treatment during pregnancy with the benign immune training agent OM-85. Clin Transl Immunology 2021; 10:e1303. [PMID: 34249358 PMCID: PMC8248556 DOI: 10.1002/cti2.1303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/20/2021] [Accepted: 06/02/2021] [Indexed: 12/29/2022] Open
Abstract
Objectives Incomplete maturation of immune regulatory functions at birth is antecedent to the heightened risk for severe respiratory infections during infancy. Our forerunner animal model studies demonstrated that maternal treatment with the microbial‐derived immune training agent OM‐85 during pregnancy promotes accelerated postnatal maturation of mechanisms that regulate inflammatory processes in the offspring airways. Here, we aimed to provide proof of concept for a novel solution to reduce the burden and potential long‐term sequelae of severe early‐life respiratory viral infection through maternal oral treatment during pregnancy with OM‐85, already in widespread human clinical use. Methods In this study, we performed flow cytometry and targeted gene expression (RT‐qPCR) analysis on lungs from neonatal offspring whose mothers received oral OM‐85 treatment during pregnancy. We next determined whether neonatal offspring from OM‐85 treated mothers demonstrate enhanced protection against lethal lower respiratory infection with mouse‐adapted rhinovirus (vMC0), and associated lung immune changes. Results Offspring from mothers treated with OM‐85 during pregnancy display accelerated postnatal seeding of lung myeloid populations demonstrating upregulation of function‐associated markers. Offspring from OM‐85 mothers additionally exhibit enhanced expression of TLR4/7 and the IL‐1β/NLRP3 inflammasome complex within the lung. These treatment effects were associated with enhanced capacity to clear an otherwise lethal respiratory viral infection during the neonatal period, with concomitant regulation of viral‐induced IFN response intensity. Conclusion These results demonstrate that maternal OM‐85 treatment protects offspring against lethal neonatal respiratory viral infection by accelerating development of innate immune mechanisms crucial for maintenance of local immune homeostasis in the face of pathogen challenge.
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Affiliation(s)
- Jean-Francois Lauzon-Joset
- Centre de Recherche Institut Universitaire de Cardiologie et de Pneumologie de Québec Université Laval Québec QC Canada.,Telethon Kids Institute University of Western Australia Nedlands WA Australia
| | - Kyle T Mincham
- Telethon Kids Institute University of Western Australia Nedlands WA Australia
| | - Naomi M Scott
- Telethon Kids Institute University of Western Australia Nedlands WA Australia
| | - Yasmine Khandan
- Telethon Kids Institute University of Western Australia Nedlands WA Australia
| | - Philip A Stumbles
- Telethon Kids Institute University of Western Australia Nedlands WA Australia.,Medical, Molecular and Forensic Sciences Murdoch University Perth WA Australia
| | - Patrick G Holt
- Telethon Kids Institute University of Western Australia Nedlands WA Australia
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10
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Pivniouk V, Gimenes Junior JA, Honeker LK, Vercelli D. The role of innate immunity in asthma development and protection: Lessons from the environment. Clin Exp Allergy 2021; 50:282-290. [PMID: 31581343 DOI: 10.1111/cea.13508] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/27/2019] [Accepted: 09/21/2019] [Indexed: 12/24/2022]
Abstract
Asthma, a complex, chronic disease characterized by airway inflammation, hyperresponsiveness and remodelling, affects over 300 million people worldwide. While the disease is typically associated with exaggerated allergen-induced type 2 immune responses, these responses are strongly influenced by environmental exposures that stimulate innate immune pathways capable of promoting or protecting from asthma. The dual role played by innate immunity in asthma pathogenesis offers multiple opportunities for both research and clinical interventions and is the subject of this review.
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Affiliation(s)
- Vadim Pivniouk
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA.,Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | | | - Linnea K Honeker
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
| | - Donata Vercelli
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA.,Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
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11
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Abbring S, Xiong L, Diks MAP, Baars T, Garssen J, Hettinga K, van Esch BCAM. Loss of allergy-protective capacity of raw cow's milk after heat treatment coincides with loss of immunologically active whey proteins. Food Funct 2021; 11:4982-4993. [PMID: 32515464 DOI: 10.1039/d0fo01175d] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The allergy-protective capacity of raw cow's milk was demonstrated to be abolished after heat treatment. The heat-sensitive whey protein fraction of raw milk is often implied to be the source of this allergy-protective effect, but a direct link between these proteins and the protection against allergic diseases is missing. This study therefore aimed at investigating the mechanistic relation between heat damage to whey proteins and allergy development. Raw cow's milk was heated for 30 min at 50, 60, 65, 70, 75, or 80 °C and the native whey protein profile of these differentially heated milk samples was determined using LC-MS/MS-based proteomics. Changes in the native protein profile were subsequently related to the capacity of these milk samples to prevent the development of ovalbumin-induced food allergy in a murine animal model. A substantial loss of native whey proteins, as well as extensive protein aggregation, was observed from 75 °C. However, whey proteins with immune-related functionalities already started to denature from 65 °C, which coincided with the temperature at which a loss of allergy protection was observed in the murine model. Complement C7, monocyte differentiation antigen CD14, and polymeric immunoglobulin receptor concentrations decreased significantly at this temperature, although several other immunologically active whey proteins also showed a decrease around 65 °C. The current study demonstrates that immunologically active whey proteins that denature around 65 °C are of importance for the allergy-protective capacity of raw cow's milk and thereby provides key knowledge for the development of microbiologically safe alternatives to raw cow's milk.
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Affiliation(s)
- Suzanne Abbring
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands.
| | - Ling Xiong
- Dairy Science and Technology, Food Quality and Design Group, Wageningen University, Wageningen, The Netherlands
| | - Mara A P Diks
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands.
| | - Ton Baars
- Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands. and Danone Nutricia Research, Utrecht, The Netherlands
| | - Kasper Hettinga
- Dairy Science and Technology, Food Quality and Design Group, Wageningen University, Wageningen, The Netherlands
| | - Betty C A M van Esch
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands. and Danone Nutricia Research, Utrecht, The Netherlands
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12
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Comparative analysis of inflammatory signature profiles in eosinophilic and noneosinophilic chronic rhinosinusitis with nasal polyposis. Biosci Rep 2021; 40:222068. [PMID: 32039442 PMCID: PMC7040463 DOI: 10.1042/bsr20193101] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 01/18/2020] [Accepted: 01/24/2020] [Indexed: 12/13/2022] Open
Abstract
Chronic rhinosinusitis with nasal polyposis (CRSwNP) represents a heterogeneous disorder that can be classified into either eosinophilic or noneosinophilic endotypes. However, the immunological mechanisms of each remain unclear. The purpose of the present study was to compare and analyze inflammatory signatures of eosinophilic CRSwNP (ECRSwNP) and noneosinophilic CRSwNP (NECRSwNP). Cytokine antibody array was used to identify inflammatory mediators that were differentially expressed among ECRSwNP, NECRSwNP, and control groups. Then, bioinformatics approaches were conducted to explore biological functions and signaling pathways. In addition, pairwise correlation analyses were performed among differential levels of inflammatory mediators and tissue eosinophil infiltration. The results showed that nine mediators were significantly up-regulated in ECRSwNP, including eotaxin-2, eotaxin-3, CCL18, IL-4, IL-5, IL-10, IL-12p70, IL-13, and IL-15. Bioinformatics analysis indicated that these mediators were mainly enriched in leukocyte chemotaxis and proliferation, JAK-STAT cascade, asthma, and Th1 and Th2 cell differentiation. Furthermore, seven mediators were identified to be significantly up-regulated in NECRSwNP, including CCL20, resistin, transforming growth factor (TGF)-β2, triggering receptor expressed on myeloid cells 1 (TREM-1), CD14, glucocorticoid-induced tumor necrosis factor receptor related protein (GITR), and lipocalin-2. These mediators were closely associated with LPS responses, neutrophil chemotaxis and migration, and IL-17 signaling pathway. In addition, pairwise correlation analyses indicated that differential levels of inflammatory mediators in ECRSwNP and NECRSwNP were broadly correlated with each other and with tissue eosinophil infiltration. In conclusion, we found that ECRSwNP and NECRSwNP exhibited different patterns of inflammatory signatures. These findings may provide further insights into heterogeneity of CRSwNP.
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13
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Krumb M, Jäger M, Voss A, Immig L, Peters K, Kowalczyk D, Bufe A, Opatz T, Holst O, Vogel C, Peters M. Total Synthesis of a Partial Structure from Arabinogalactan and Its Application for Allergy Prevention. Chemistry 2021; 27:928-933. [PMID: 32579239 PMCID: PMC7821321 DOI: 10.1002/chem.202002287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Indexed: 11/08/2022]
Abstract
Arabinogalactan, a microheterogeneous polysaccharide occurring in plants, is known for its allergy-protective activity, which could potentially be used for preventive allergy treatment. New treatment options are highly desirable, especially in a preventive manner, due to the constant rise of atopic diseases worldwide. The structural origin of the allergy-protective activity of arabinogalactan is, however, still unclear and isolation of the polysaccharide is not feasible for pharmaceutical applications due to a variation of the activity of the natural product and contaminations with endotoxins. Therefore, a pentasaccharide partial structure was selected for total synthesis and subsequently coupled to a carrier protein to form a neoglycoconjugate. The allergy-protective activity of arabinogalactan could be reproduced with the partial structure in subsequent in vivo experiments. This is the first example of a successful simplification of arabinogalactan with a single partial structure while retaining its allergy-preventive potential.
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Affiliation(s)
- Matthias Krumb
- Department of ChemistryJohannes Gutenberg-UniversityDuesbergweg 10–1455128MainzGermany
| | - Maximilian Jäger
- Department of Experimental PneumologyRuhr-University BochumUniversitätsstr. 15044801BochumGermany
| | - Alice Voss
- Department of ChemistryUniversity of RostockAlbert-Einstein-Str. 3a18051RostockGermany
| | - Loreen Immig
- Department of Experimental PneumologyRuhr-University BochumUniversitätsstr. 15044801BochumGermany
| | - Karin Peters
- Department of Experimental PneumologyRuhr-University BochumUniversitätsstr. 15044801BochumGermany
| | - Danuta Kowalczyk
- Department of ChemistryJohannes Gutenberg-UniversityDuesbergweg 10–1455128MainzGermany
| | - Albrecht Bufe
- Department of Experimental PneumologyRuhr-University BochumUniversitätsstr. 15044801BochumGermany
| | - Till Opatz
- Department of ChemistryJohannes Gutenberg-UniversityDuesbergweg 10–1455128MainzGermany
| | - Otto Holst
- Division of Structural BiochemistryResearch Center BorstelLeibniz Lung CenterAirway Research Center North (ARCN)Parkallee 1–4023845BorstelGermany
| | - Christian Vogel
- Department of ChemistryUniversity of RostockAlbert-Einstein-Str. 3a18051RostockGermany
| | - Marcus Peters
- Department of Experimental PneumologyRuhr-University BochumUniversitätsstr. 15044801BochumGermany
- Department of Molecular ImmunologyRuhr-University BochumUniversitätsstr. 15044801BochumGermany
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14
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van Esch BCAM, Porbahaie M, Abbring S, Garssen J, Potaczek DP, Savelkoul HFJ, van Neerven RJJ. The Impact of Milk and Its Components on Epigenetic Programming of Immune Function in Early Life and Beyond: Implications for Allergy and Asthma. Front Immunol 2020; 11:2141. [PMID: 33193294 PMCID: PMC7641638 DOI: 10.3389/fimmu.2020.02141] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/06/2020] [Indexed: 12/12/2022] Open
Abstract
Specific and adequate nutrition during pregnancy and early life is an important factor in avoiding non-communicable diseases such as obesity, type 2 diabetes, cardiovascular disease, cancers, and chronic allergic diseases. Although epidemiologic and experimental studies have shown that nutrition is important at all stages of life, it is especially important in prenatal and the first few years of life. During the last decade, there has been a growing interest in the potential role of epigenetic mechanisms in the increasing health problems associated with allergic disease. Epigenetics involves several mechanisms including DNA methylation, histone modifications, and microRNAs which can modify the expression of genes. In this study, we focus on the effects of maternal nutrition during pregnancy, the effects of the bioactive components in human and bovine milk, and the environmental factors that can affect early life (i.e., farming, milk processing, and bacterial exposure), and which contribute to the epigenetic mechanisms underlying the persistent programming of immune functions and allergic diseases. This knowledge will help to improve approaches to nutrition in early life and help prevent allergies in the future.
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Affiliation(s)
- Betty C A M van Esch
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands.,Danone Nutricia Research, Utrecht, Netherlands
| | - Mojtaba Porbahaie
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - Suzanne Abbring
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands.,Danone Nutricia Research, Utrecht, Netherlands
| | - Daniel P Potaczek
- Institute of Laboratory Medicine, Member of the German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps-University Marburg, Marburg, Germany.,John Paul II Hospital, Krakow, Poland
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - R J Joost van Neerven
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands.,FrieslandCampina, Amersfoort, Netherlands
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15
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Lin X, Ren X, Xiao X, Yang Z, Yao S, Wong GW, Liu Z, Wang C, Su Z, Li J. Important Role of Immunological Responses to Environmental Exposure in the Development of Allergic Asthma. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2020; 12:934-948. [PMID: 32935487 PMCID: PMC7492518 DOI: 10.4168/aair.2020.12.6.934] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 04/30/2020] [Accepted: 05/02/2020] [Indexed: 12/16/2022]
Abstract
Allergic asthma is a public health problem that affects human health and socioeconomic development. Studies have found that the prevalence of asthma has significantly increased in recent years, which has become particularly pronounced in developed countries. With rapid urbanization in China in the last 3 decades, the prevalence of asthma has increased significantly in urban areas. As changes in genetic backgrounds of human populations are limited, environmental exposure may be a major factor that is responsible for the increased prevalence of asthma. This review focuses on environmental components of farms and rural areas that may have protective effects in reducing the development of asthma. Farm and rural related microorganism- and pathogen-associated molecular patterns are considered to be important environmental factors that modulate host's innate and adaptive immune system to induce protection effects later in life. Environmental microbial-related immunotherapy will also be discussed as the future research direction for the prevention of allergic asthma.
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Affiliation(s)
- Xinliu Lin
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xia Ren
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaojun Xiao
- Institute of Allergy and Immunology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Zhaowei Yang
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Siyang Yao
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Gary Wk Wong
- Departments of Pediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, China
| | - Zhigang Liu
- Institute of Allergy and Immunology, School of Medicine, Shenzhen University, Shenzhen, China
| | - Charles Wang
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Zhong Su
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.
| | - Jing Li
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
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16
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McDonald FB, Dempsey EM, O'Halloran KD. The impact of preterm adversity on cardiorespiratory function. Exp Physiol 2019; 105:17-43. [PMID: 31626357 DOI: 10.1113/ep087490] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/15/2019] [Indexed: 12/16/2022]
Abstract
NEW FINDINGS What is the topic of this review? We review the influence of prematurity on the cardiorespiratory system and examine the common sequel of alterations in oxygen tension, and immune activation in preterm infants. What advances does it highlight? The review highlights neonatal animal models of intermittent hypoxia, hyperoxia and infection that contribute to our understanding of the effect of stress on neurodevelopment and cardiorespiratory homeostasis. We also focus on some of the important physiological pathways that have a modulatory role on the cardiorespiratory system in early life. ABSTRACT Preterm birth is one of the leading causes of neonatal mortality. Babies that survive early-life stress associated with immaturity have significant prevailing short- and long-term morbidities. Oxygen dysregulation in the first few days and weeks after birth is a primary concern as the cardiorespiratory system slowly adjusts to extrauterine life. Infants exposed to rapid alterations in oxygen tension, including exposures to hypoxia and hyperoxia, have altered redox balance and active immune signalling, leading to altered stress responses that impinge on neurodevelopment and cardiorespiratory homeostasis. In this review, we explore the clinical challenges posed by preterm birth, followed by an examination of the literature on animal models of oxygen dysregulation and immune activation in the context of early-life stress.
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Affiliation(s)
- Fiona B McDonald
- Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.,Irish Centre for Fetal and Neonatal Translational Research (INFANT) Research Centre, University College Cork, Cork, Ireland
| | - Eugene M Dempsey
- Irish Centre for Fetal and Neonatal Translational Research (INFANT) Research Centre, University College Cork, Cork, Ireland.,Department of Paediatrics & Child Health, School of Medicine, College of Medicine & Health, Cork University Hospital, Wilton, Cork, Ireland
| | - Ken D O'Halloran
- Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.,Irish Centre for Fetal and Neonatal Translational Research (INFANT) Research Centre, University College Cork, Cork, Ireland
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17
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Marrs T, Logan K, Craven J, Radulovic S, McLean WI, Lack G, Flohr C, Perkin MR, Young L, Offord V, DeSousa M, Cullen J, Taylor K, Tseng A, Raji B, Byrom S, Regis G, Bigwood C, Stedman C, Tonner S, Banks E, Kahnum Y, Babic R, Stockwell B, Thompson E, Wheatley L, Patkunam D, Richards K, Pietraszewicz E, Stephens A, Sudra A, Turcanu V. Dog ownership at three months of age is associated with protection against food allergy. Allergy 2019; 74:2212-2219. [PMID: 31077604 DOI: 10.1111/all.13868] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 03/19/2019] [Accepted: 03/22/2019] [Indexed: 01/14/2023]
Abstract
BACKGROUND The prevention of food allergy is a key priority for reducing the burden of allergic disease. Environmental exposures modulate the risk of developing food allergy and some of this may be mediated by the infants' developing microbiome. However, the role of potentially protective environmental exposures, such as pet ownership, is largely uninvestigated with respect to food allergy. METHODS We performed a secondary cohort analysis in the Enquiring About Tolerance (EAT) study, which enrolled 1303 three-month infants onto a randomized trial to prevent food allergy. A survey elicited domestic animal ownership and participants were examined for atopic dermatitis (AD) at enrolment. Sensitization to foods and aeroallergens were elicited by skin and serum testing at 3, 12 and 36 months. Food allergy status was determined by double-blind placebo-controlled food challenges between 1 and 3 years. RESULTS Food allergy was diagnosed amongst 6.1% (68/1124) of participants with complete data. No significant relationships were demonstrated between food allergy and caesarean delivery, infections or antibiotic exposure in early life. After adjusting for familial atopic disease, maternal dog/cat sensitization and participant AD, living with dogs was associated with a 90% reduction in the odds of infants developing food allergy (adjusted odds ratio (aOR) 0.10 (confidence interval (CI) 0.01-0.71), P = 0.02). None of the 49 infants living with at least two dogs developed food allergy, suggesting a dose-response relationship (each dog owned aOR 0.12 (CI 0.02-0.81), P = 0.03). No relationship was demonstrated between owning dogs or cats and the development of AD. CONCLUSION Dog ownership in infancy may prevent food allergy.
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Affiliation(s)
- Tom Marrs
- Paediatric Allergy Department, Women and Children’s Health King’s College London London UK
- Children’s Allergies Department, Evelina London, Guy’s and St Thomas’ NHS Foundation Trust St Thomas’ Hospital London UK
| | - Kirsty Logan
- Paediatric Allergy Department, Women and Children’s Health King’s College London London UK
| | - Joanna Craven
- Paediatric Allergy Department, Women and Children’s Health King’s College London London UK
| | - Suzana Radulovic
- Paediatric Allergy Department, Women and Children’s Health King’s College London London UK
| | - W.H.A. Irwin McLean
- Division of Molecular Medicine, Centre for Dermatology and Genetic Medicine University of Dundee Dundee UK
| | - Gideon Lack
- Paediatric Allergy Department, Women and Children’s Health King’s College London London UK
- Children’s Allergies Department, Evelina London, Guy’s and St Thomas’ NHS Foundation Trust St Thomas’ Hospital London UK
| | - Carsten Flohr
- Unit for Population‐Based Dermatology Research, St John’s Institute of Dermatology King’s College London and Guy’s & St Thomas’ Hospital NHS Foundation Trust London UK
| | - Michael R. Perkin
- Population Health Research Institute, St George’s University of London London UK
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18
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Karvonen AM, Kirjavainen PV, Täubel M, Jayaprakash B, Adams RI, Sordillo JE, Gold DR, Hyvärinen A, Remes S, von Mutius E, Pekkanen J. Indoor bacterial microbiota and development of asthma by 10.5 years of age. J Allergy Clin Immunol 2019; 144:1402-1410. [PMID: 31415782 DOI: 10.1016/j.jaci.2019.07.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 06/06/2019] [Accepted: 07/11/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Early-life indoor bacterial exposure is associated with the risk of asthma, but the roles of specific bacterial genera are poorly understood. OBJECTIVE We sought to determine whether individual bacterial genera in indoor microbiota predict the development of asthma. METHODS Dust samples from living rooms were collected at 2 months of age. The dust microbiota was characterized by using Illumina MiSeq sequencing amplicons of the bacterial 16S ribosomal RNA gene. Children (n = 373) were followed up for ever asthma until the age of 10.5 years. RESULTS Richness was inversely associated with asthma after adjustments (P = .03). The phylogenetic microbiota composition in asthmatics patients' homes was characteristically different from that in nonasthmatic subjects' homes (P = .02, weighted UniFrac, adjusted association, permutational multivariate analysis of variance, PERMANOVA-S). The first 2 axis scores of principal coordinate analysis of the weighted UniFrac distance matrix were inversely associated with asthma. Of 658 genera detected in the dust samples, the relative abundances of 41 genera correlated (r > |0.4|) with one of these axes. Lactococcus genus was a risk factor for asthma (adjusted odds ratio, 1.36 [95% CI, 1.13-1.63] per interquartile range change). The abundance of 12 bacterial genera (mostly from the Actinomycetales order) was associated with lower asthma risk (P < .10), although not independently of each other. The sum relative abundance of these 12 intercorrelated genera was significantly protective and explained the majority of the association of richness with less asthma. CONCLUSION Our data confirm that phylogenetic differences in the microbiota of infants' homes are associated with subsequent asthma risk and suggest that communities of selected bacteria are more strongly linked to asthma protection than individual bacterial taxa or mere richness.
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Affiliation(s)
- Anne M Karvonen
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass.
| | - Pirkka V Kirjavainen
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland; Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Martin Täubel
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland
| | | | - Rachel I Adams
- Plant & Microbial Biology, University of California, Berkeley, Calif; California Department of Public Health, Environmental Health Laboratory Branch, Richmond, Calif
| | - Joanne E Sordillo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass; Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, Mass
| | - Diane R Gold
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass
| | - Anne Hyvärinen
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland
| | - Sami Remes
- Department of Pediatrics, Kuopio University Hospital, Kuopio, Finland
| | - Erika von Mutius
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität, Munich, Germany; Member of the German Center for Lung Research, Giessen, Germany; Institute for Asthma and Allergy Prevention (IAP), Helmholtz Zentrum München, Munich, Germany
| | - Juha Pekkanen
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland; Department of Public Health, University of Helsinki, Helsinki, Finland
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19
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Bentley JK, Han M, Jaipalli S, Hinde JL, Lei J, Ishikawa T, Goldsmith AM, Rajput C, Hershenson MB. Myristoylated rhinovirus VP4 protein activates TLR2-dependent proinflammatory gene expression. Am J Physiol Lung Cell Mol Physiol 2019; 317:L57-L70. [PMID: 30908938 DOI: 10.1152/ajplung.00365.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Asthma exacerbations are often caused by rhinovirus (RV). We and others have shown that Toll-like receptor 2 (TLR2), a membrane surface receptor that recognizes bacterial lipopeptides and lipoteichoic acid, is required and sufficient for RV-induced proinflammatory responses in vitro and in vivo. We hypothesized that viral protein-4 (VP4), an internal capsid protein that is myristoylated upon viral replication and externalized upon viral binding, is a ligand for TLR2. Recombinant VP4 and myristoylated VP4 (MyrVP4) were purified by Ni-affinity chromatography. MyrVP4 was also purified from RV-A1B-infected HeLa cells by urea solubilization and anti-VP4 affinity chromatography. Finally, synthetic MyrVP4 was produced by chemical peptide synthesis. MyrVP4-TLR2 interactions were assessed by confocal fluorescence microscopy, fluorescence resonance energy transfer (FRET), and monitoring VP4-induced cytokine mRNA expression in the presence of anti-TLR2 and anti-VP4. MyrVP4 and TLR2 colocalized in TLR2-expressing HEK-293 cells, mouse bone marrow-derived macrophages, human bronchoalveolar macrophages, and human airway epithelial cells. Colocalization was absent in TLR2-null HEK-293 cells and blocked by anti-TLR2 and anti-VP4. Cy3-labeled MyrVP4 and Cy5-labeled anti-TLR2 showed an average fractional FRET efficiency of 0.24 ± 0.05, and Cy5-labeled anti-TLR2 increased and unlabeled MyrVP4 decreased FRET efficiency. MyrVP4-induced chemokine mRNA expression was higher than that elicited by VP4 alone and was attenuated by anti-TLR2 and anti-VP4. Cytokine expression was similarly increased by MyrVP4 purified from RV-infected HeLa cells and synthetic MyrVP4. We conclude that, during RV infection, MyrVP4 and TLR2 interact to generate a proinflammatory response.
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Affiliation(s)
- J Kelley Bentley
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Mingyuan Han
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Suraj Jaipalli
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Joanna L Hinde
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Jing Lei
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Tomoko Ishikawa
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Adam M Goldsmith
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Charu Rajput
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan
| | - Marc B Hershenson
- Departments of Pediatrics and Communicable Diseases, University of Michigan , Ann Arbor, Michigan.,Department of Molecular and Integrative Physiology, University of Michigan , Ann Arbor, Michigan
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20
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Tian FY, Marsit CJ. Environmentally Induced Epigenetic Plasticity in Development: Epigenetic Toxicity and Epigenetic Adaptation. CURR EPIDEMIOL REP 2018; 5:450-460. [PMID: 30984515 PMCID: PMC6456900 DOI: 10.1007/s40471-018-0175-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE OF REVIEW Epigenetic processes represent important mechanisms underlying developmental plasticity in response to environmental exposures. The current review discusses three classes of environmentally-induced epigenetic changes reflecting two aspects of that plasticity, toxicity effects as well as adaptation in the process of development. RECENT FINDINGS Due to innate resilience, epigenetic changes caused by environmental exposures may not always lead impairments but may allow the organisms to achieve positive developmental outcomes through appropriate adaptation and a buffering response. Thus, some epigenetic adaptive responses to an immediate stimulus or exposure early in life would be expected to have a survival advantage but these same responses may also result in adverse developmental outcomes as they persists into later life stage. Although accumulating literature has identified environmentally induced epigenetic changes and linked them to health outcomes, we currently face challenges in the interpretation of the functional impact of their epigenetic plasticity. SUMMARY Current environmental epigenetic research suggest that epigenetic processes may serve as a mechanism for resilience, and that they can be considered in terms of their impact on toxicity as a negative outcome, but also on adaptation for improved survival or health. This review encourages epigenetic environmental studies to move deeper inside into the functional meaning of epigenetic plasticity in the development.
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Affiliation(s)
- Fu-Ying Tian
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Carmen J. Marsit
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
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21
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Yu J, Liu X, Li Y, Meng S, Wu F, Yan B, Xue Y, Ma T, Yang J, Liu J. Maternal exposure to farming environment protects offspring against allergic diseases by modulating the neonatal TLR-Tregs-Th axis. Clin Transl Allergy 2018; 8:34. [PMID: 30140427 PMCID: PMC6098605 DOI: 10.1186/s13601-018-0220-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 08/08/2018] [Indexed: 12/21/2022] Open
Abstract
Background As the development of urbanization in China, the morbidity of allergic disease rise up prominently even in children, which may be partially associated with the excessively clean environment. It has been reported that common microorganism in rural environment shows protective effects on allergic disease by modulating TLRs-Tregs/Th cell axis. But the mechanism of this protection still needs to be elucidated in detail. We investigated the effects of maternal exposure to farming environment on the neonatal innate immune system, especially on the TLR-Treg-Th (Th1, Th2, Th9, and Th17) axis, in the Jilin province of China. Methods Eighty-four non-farming and 42 farming pregnant women were recruited. Endotoxins and glucans in dust from the living rooms of the pregnant mothers were measured. Cord blood mononuclear cells were challenged with phytohemagglutinin, lipopolysaccharide, or peptidoglycan. Proliferative response of lymphocyte was measured by 3H-TdR incorporation methods, CD4 + CD25 + FOXP3 + T cells percentage was assessed with flow cytometry, Tregs specific genes (FOXP3, LAG3, GITR, CTLA-4 and TGF-β) and TLR2, TLR4 genes expression were detected by RT-PCR, specific cytokines of Th1, Th2, Th9, Th17 and Tregs were measured with flow cytometer, suppressive capacity of Tregs was tested by culturing with effector cells in vitro, and TLR2/4 gene polymorphism was detected. Results Higher endotoxin content was observed in the living rooms of the farming mothers. Compared with that in the non-farming group, in farming neonatal CBMCs, lymphocyte proliferation declined; the IFN-γ/IL-13 ratio increased; and the quantity of Tregs and gene expression of FOXP3, GITR, CTLA4 and TLR2 increased significantly (P < 0.05). Isolated Tregs suppressed the proliferation of effector T cells and IL-13 production more strongly in vitro (P = 0.04, 0.03, respectively), and the TLR2 polymorphism affected FOXP3 expression and IFN-γ and IL-13 production. Conclusions Maternal exposure to farming affected the quantity and function of neonatal Tregs upon stimulation with PPG and LPS, which partly contributed to reducing the risk for allergic diseases in the offspring. The results of our study will lay the theoretical foundation for allergic disease prevention in early life. Electronic supplementary material The online version of this article (10.1186/s13601-018-0220-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jinyan Yu
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
| | - Xiaoqiu Liu
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
| | - Yanlei Li
- 2Department of Clinical Laboratory, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 People's Republic of China
| | - Shanshan Meng
- 4Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, People's Republic of China
| | - Fei Wu
- 3Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 People's Republic of China
| | - Bingdi Yan
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
| | - Yanjun Xue
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
| | - Tiangang Ma
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
| | - Junling Yang
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
| | - Jing Liu
- 1Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041 Jilin People's Republic of China
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Zimmermann P, Curtis N. The influence of the intestinal microbiome on vaccine responses. Vaccine 2018; 36:4433-4439. [DOI: 10.1016/j.vaccine.2018.04.066] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 04/11/2018] [Accepted: 04/20/2018] [Indexed: 02/06/2023]
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Zakeri A, Russo M. Dual Role of Toll-like Receptors in Human and Experimental Asthma Models. Front Immunol 2018; 9:1027. [PMID: 29867994 PMCID: PMC5963123 DOI: 10.3389/fimmu.2018.01027] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 04/24/2018] [Indexed: 12/31/2022] Open
Abstract
Asthma is a chronic airway inflammatory disease that is influenced by the interplay between genetic factors and exposure to environmental allergens, microbes, or microbial products where toll-like receptors (TLRs) play a pivotal role. TLRs recognize a wide range of microbial or endogenous molecules as well as airborne environmental allergens and act as adjuvants that influence positively or negatively allergic sensitization. TLRs are qualitatively and differentially expressed on hematopoietic and non-hematopoietic stromal or structural airway cells that when activated by TLRs agonists exert an immune-modulatory role in asthma development. Therefore, understanding mechanisms and pathways by which TLRs orchestrate asthma outcomes may offer new strategies to control the disease. Here, we aim to review and critically discuss the role of TLRs in human asthma and murine models of allergic airway inflammation, highlighting the complexity of TLRs function in development, exacerbation, or control of airway allergic inflammation.
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Affiliation(s)
- Amin Zakeri
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark
| | - Momtchilo Russo
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Teixeira D, Ishimura ME, Apostólico JDS, Viel JM, Passarelli VC, Cunha-Neto E, Rosa DS, Longo-Maugéri IM. Propionibacterium acnes Enhances the Immunogenicity of HIVBr18 Human Immunodeficiency Virus-1 Vaccine. Front Immunol 2018; 9:177. [PMID: 29467764 PMCID: PMC5808300 DOI: 10.3389/fimmu.2018.00177] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/19/2018] [Indexed: 02/01/2023] Open
Abstract
Immunization of BALB/c mice with HIVBr18, a DNA vaccine containing 18 CD4+ T cell epitopes from human immunodeficiency virus (HIV), induced specific CD4+ and CD8+ T cell responses in a broad, polyfunctional and persistent manner. With the aim of increasing the immunogenicity of this vaccine, the effect of Propionibacterium acnes as an adjuvant was evaluated. The adjuvant effects of this bacterium have been extensively demonstrated in both experimental and clinical settings. Herein, administration of two doses of HIVBr18, in the presence of P. acnes, increased the proliferation of HIV-1-specific CD4+ and CD8+ T lymphocytes, the polyfunctional profile of CD4+ T cells, the production of IFN-γ, and the number of recognized vaccine-encoded peptides. One of the bacterial components responsible for most of the adjuvant effects observed was a soluble polysaccharide extracted from the P. acnes cell wall. Furthermore, within 10 weeks after immunization, the proliferation of specific T cells and production of IFN-γ were maintained when the whole bacterium was administered, demonstrating a greater effect on the longevity of the immune response by P. acnes. Even with fewer immunization doses, P. acnes was found to be a potent adjuvant capable of potentiating the effects of the HIVBr18 vaccine. Therefore, P. acnes may be a potential adjuvant to aid this vaccine in inducing immunity or for therapeutic use.
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Affiliation(s)
- Daniela Teixeira
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Mayari Eika Ishimura
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Juliana de Souza Apostólico
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Jacqueline Miyuki Viel
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Victor Cabelho Passarelli
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Edecio Cunha-Neto
- Laboratory of Clinical Immunology and Allergy-LIM60, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Daniela Santoro Rosa
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Ieda Maria Longo-Maugéri
- Division of Immunology, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
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Tischer C, Dadvand P, Basagana X, Fuertes E, Bergström A, Gruzieva O, Melen E, Berdel D, Heinrich J, Koletzko S, Markevych I, Standl M, Sugiri D, Cirugeda L, Estarlich M, Fernández-Somoano A, Ferrero A, Ibarlueza J, Lertxundi A, Tardón A, Sunyer J, Anto JM. Urban upbringing and childhood respiratory and allergic conditions: A multi-country holistic study. ENVIRONMENTAL RESEARCH 2018; 161:276-283. [PMID: 29172161 DOI: 10.1016/j.envres.2017.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/30/2017] [Accepted: 11/07/2017] [Indexed: 05/25/2023]
Abstract
OBJECTIVE We integratively assessed the effect of different indoor and outdoor environmental exposures early in life on respiratory and allergic health conditions among children from (sub-) urban areas. METHODS This study included children participating in four ongoing European birth cohorts located in three different geographical regions: INMA (Spain), LISAplus (Germany), GINIplus (Germany) and BAMSE (Sweden). Wheezing, bronchitis, asthma and allergic rhinitis throughout childhood were assessed using parental-completed questionnaires. We designed "environmental scores" corresponding to different indoor, green- and grey-related exposures (main analysis, a-priori-approach). Cohort-specific associations between these environmental scores and the respiratory health outcomes were assessed using random-effects meta-analyses. In addition, a factor analysis was performed based on the same exposure information used to develop the environmental scores (confirmatory analysis, data-driven-approach). RESULTS A higher early exposure to the indoor environmental score increased the risk for wheezing and bronchitis within the first year of life (combined adjusted odds ratio: 1.20 [95% confidence interval: 1.13-1.27] and 1.28 [1.18-1.39], respectively). In contrast, there was an inverse association with allergic rhinitis between 6 and 8 years (0.85 [0.79-0.92]). There were no statistically significant associations for the outdoor related environmental scores in relation to any of the health outcomes tested. The factor analysis conducted confirmed these trends. CONCLUSION Although a higher exposure to indoor related exposure through occupants was associated with an increased risk for wheezing and bronchitis within the 1st year, it might serve as a preventive mechanism against later childhood allergic respiratory outcomes in urbanized environments through enhanced shared contact with microbial agents.
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Affiliation(s)
- Christina Tischer
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
| | - Payam Dadvand
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Xavier Basagana
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Elaine Fuertes
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden
| | - Erik Melen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden; Sachs' Children's Hospital, Södersjukhuset, Stockholm, Sweden
| | - Dietrich Berdel
- Research Institute, Department of Pediatrics, Marien-Hospital Wesel, Wesel, Germany
| | - Joachim Heinrich
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Inner City Clinic, University Hospital of Munich (LMU), Munich, Germany; Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Sibylle Koletzko
- Division of Paediatric Gastroenterology and Hepatology, Dr. von Hauner Children's Hospital Munich, Ludwig-Maximilians-University of Munich, Germany
| | - Iana Markevych
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Inner City Clinic, University Hospital of Munich (LMU), Munich, Germany; Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Marie Standl
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Dorothea Sugiri
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Lourdes Cirugeda
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Marisa Estarlich
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; FISABIO-Universitat de València-Universitat Jaume I Joint Research Unit, Valencia, Spain
| | - Ana Fernández-Somoano
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; IUOPA-Preventive Medicine and Public Health Area, Department of Medicine, University of Oviedo, Asturias, Spain
| | - Amparo Ferrero
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; FISABIO-Universitat de València-Universitat Jaume I Joint Research Unit, Valencia, Spain
| | - Jesus Ibarlueza
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; Health Research Institute, BIODONOSTIA, San Sebastian, Spain; Subdireccion de Salud Publica de Gipuzkoa, San Sebastian, Spain; University of Basque Country, UPV/EH, Leioa, Spain
| | - Aitana Lertxundi
- Health Research Institute, BIODONOSTIA, San Sebastian, Spain; University of Basque Country, UPV/EH, Leioa, Spain
| | - Adonina Tardón
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; IUOPA-Preventive Medicine and Public Health Area, Department of Medicine, University of Oviedo, Asturias, Spain
| | - Jordi Sunyer
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Josep M Anto
- ISGlobal, Barcelona Institute for Global Health - Campus MAR, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
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Exposure to nonmicrobial N-glycolylneuraminic acid protects farmers' children against airway inflammation and colitis. J Allergy Clin Immunol 2018. [DOI: 10.1016/j.jaci.2017.04.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ober C, Sperling AI, von Mutius E, Vercelli D. Immune development and environment: lessons from Amish and Hutterite children. Curr Opin Immunol 2017; 48:51-60. [PMID: 28843541 DOI: 10.1016/j.coi.2017.08.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/06/2017] [Accepted: 08/08/2017] [Indexed: 12/20/2022]
Abstract
Children who grow up in traditional farm environments are protected from developing asthma and allergy. This 'farm effect' can be largely explained by the child's early life contact with farm animals, in particular cows, and their microbes. Our studies in Amish and Hutterite school children living on farms in the U.S. have further demonstrated that this protection is mediated through innate immune pathways. Although very similar with respect to ancestry and many lifestyle factors that are associated with asthma risk, Amish and Hutterites follow farming practices that are associated with profound differences in the levels of house dust endotoxin, in the prevalence of asthma and atopy among school children, and in the proportions, phenotypes, and functions of immune cells from these children. In this review, we will consider our studies in Amish and Hutterites children in the context of the many previous studies in European farm children and discuss how these studies have advanced our understanding of the asthma-protective 'farm effect'.
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Affiliation(s)
- Carole Ober
- Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA.
| | - Anne I Sperling
- Section of Pulmonary and Critical Care Medicine, Department of Medicine and the Committee on Immunology, University of Chicago, Chicago, IL 60637, USA
| | - Erika von Mutius
- Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, Germany; Comprehensive Pneumology Center, Munich, Germany; German Center for Lung Research, Germany
| | - Donata Vercelli
- Department of Cellular and Molecular Medicine, Asthma and Airway Disease Research Center, and Bio5 Institute, The University of Arizona, Tucson, AZ 85724, USA
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House JS, Wyss AB, Hoppin JA, Richards M, Long S, Umbach DM, Henneberger PK, Beane Freeman LE, Sandler DP, Long O'Connell E, Barker-Cummings C, London SJ. Early-life farm exposures and adult asthma and atopy in the Agricultural Lung Health Study. J Allergy Clin Immunol 2017; 140:249-256.e14. [PMID: 27845237 PMCID: PMC5429211 DOI: 10.1016/j.jaci.2016.09.036] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 09/01/2016] [Accepted: 09/08/2016] [Indexed: 01/28/2023]
Abstract
BACKGROUND Previous studies, mostly from Europe, suggest that early-life farming exposures protect against childhood asthma and allergy; few data exist on asthma and allergy in adults. OBJECTIVE We sought to examine associations between early-life farming exposures and current asthma and atopy in an older adult US farming population. METHODS We analyzed data from 1746 farmers and 1555 spouses (mean age, 63) from a case-control study nested within the Agricultural Health Study. Current asthma and early-life farming exposures were assessed via questionnaires. We defined atopy based on specific IgE > 0.70 IU/mL to at least 1 of 10 allergens measured in blood. We used logistic regression, adjusted for age, sex, race, state (Iowa or North Carolina), and smoking (pack years), to estimate associations between early-life exposures and asthma (1198 cases and 2031 noncases) or atopy (578 cases and 2526 noncases). RESULTS Exposure to the farming environment in utero and in early childhood had little or no association with asthma but was associated with reduced odds of atopy. The strongest association was seen for having a mother who performed farm activities while pregnant (odds ratio, 0.60; 95% CI, 0.48-0.74) and remained significant in models with correlated early-life exposures including early childhood farm animal contact and raw milk consumption. CONCLUSIONS In a large US farming population, early-life farm exposures, particularly maternal farming activities while pregnant, were strongly associated with reduced risk of atopy in adults. These results extend previous work done primarily on childhood outcomes and suggest that protective associations of early-life farming exposures on atopy endure across the life course.
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Affiliation(s)
- John S House
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC
| | - Annah B Wyss
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC
| | - Jane A Hoppin
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC; Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, NC
| | | | | | - David M Umbach
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC
| | - Paul K Henneberger
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV
| | - Laura E Beane Freeman
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Bethesda, Md
| | - Dale P Sandler
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC
| | | | | | - Stephanie J London
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC.
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Fu L, Wang C, Wang Y. Seafood allergen-induced hypersensitivity at the microbiota-mucosal site: Implications for prospective probiotic use in allergic response regulation. Crit Rev Food Sci Nutr 2017; 58:1512-1525. [DOI: 10.1080/10408398.2016.1269719] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Linglin Fu
- Key Laboratory for Food Microbial Technology of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Chong Wang
- Key Laboratory for Food Microbial Technology of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Yanbo Wang
- Key Laboratory for Food Microbial Technology of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
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Reynolds LA, Finlay BB. Early life factors that affect allergy development. Nat Rev Immunol 2017; 17:518-528. [DOI: 10.1038/nri.2017.39] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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Schröder PC, Illi S, Casaca VI, Lluis A, Böck A, Roduit C, Depner M, Frei R, Genuneit J, Pfefferle PI, Roponen M, Weber J, Braun-Fahrländer C, Riedler J, Dalphin J, Pekkanen J, Lauener R, von Mutius E, Schaub B. A switch in regulatory T cells through farm exposure during immune maturation in childhood. Allergy 2017; 72:604-615. [PMID: 27732759 DOI: 10.1111/all.13069] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Farm exposure protects against development of allergies early in life. At 4.5 years, protection against asthma by farm-milk exposure was partially mediated by regulatory T cells (Tregs). The aim of this study was to investigate the critical time window of the 'asthma-protective' farm effect via Tregs during childhood immune maturation. METHODS Tregs were assessed longitudinally at 4.5 and 6 years in 111 children (56 farm and 55 reference children) from the PASTURE/EFRAIM birth cohort (flow cytometry). Peripheral blood mononuclear cells were cultured unstimulated (U), with phorbol 12-myristate 13-acetate/ionomycin (PI) or lipopolysaccharide (LPS), and stained for Tregs (CD4+ CD25high FOXP3upper20% ). mRNA expression of Treg/Th1/Th2/Th17-associated cell markers was measured ex vivo. Suppressive capacity of Tregs on effector cells and cytokines was assessed. Detailed questionnaires assessing farm exposures and clinical phenotypes from birth until age 6 years were answered by the parents. RESULTS Treg percentage before and after stimulation and FOXP3mRNA expression ex vivo decreased from age 4.5 to 6 years (P(U,LPS) < 0.001; P(PI) = 0.051; P(FOXP3) < 0.001). High vs low farm-milk and animal-stable exposure was associated with decreased LPS-stimulated Treg percentage at age 6 years (P(LPS) = 0.045). Elevated LPS-stimulated-Treg percentage at age 6 was associated with increased risk of asthma (aOR = 11.29, CI: 0.96-132.28, P = 0.053). Tregs from asthmatics vs nonasthmatics suppressed IFN-γ (P = 0.015) and IL-9 (P = 0.023) less efficiently. mRNA expression of Th1/Th2/Th17-associated cell markers decreased between 4.5 and 6 years (P < 0.001). CONCLUSIONS Tregs at the age of 6 years were decreased with farm exposure and increased within asthmatics, opposite to age 4.5 years. This immunological switch defines a critical 'time window' for Treg-mediated asthma protection via environmental exposure before age 6 years.
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Affiliation(s)
- P. C. Schröder
- LMU Munich; University Children's Hospital; Munich Germany
| | - S. Illi
- LMU Munich; University Children's Hospital; Munich Germany
| | - V. I. Casaca
- LMU Munich; University Children's Hospital; Munich Germany
| | - A. Lluis
- National Jewish Health; Denver CO USA
| | - A. Böck
- LMU Munich; University Children's Hospital; Munich Germany
| | - C. Roduit
- Children's Hospital; University of Zürich; Zürich Switzerland
- Christine Kühne - Center for Allergy Research and Education (CK-CARE); Davos Switzerland
| | - M. Depner
- LMU Munich; University Children's Hospital; Munich Germany
| | - R. Frei
- Christine Kühne - Center for Allergy Research and Education (CK-CARE); Davos Switzerland
- Swiss Institute of Allergy and Asthma Research (SIAF); University of Zurich; Davos Switzerland
| | - J. Genuneit
- Institute of Epidemiology and Medical Biometry; Ulm University; Ulm Germany
| | - P. I. Pfefferle
- Comprehensive Biomaterial Bank Marburg CBBM; Fachbereich Medizin der Philipps Universität Marburg; Zentrum für Tumor und Immunbiologie ZTI; Marburg Germany
- Member of the German Centre for Lung Research (DZL); Munich Germany
| | - M. Roponen
- Department of Environmental Science; Inhalation Toxicology Laboratory; University of Eastern Finland; Kuopio Finland
| | - J. Weber
- LMU Munich; University Children's Hospital; Munich Germany
| | - C. Braun-Fahrländer
- Swiss Tropical and Public Health Institute; Basel Switzerland
- University of Basel; Basel Switzerland
| | - J. Riedler
- Children's Hospital Schwarzach; Schwarzach Austria
- Teaching Hospital of Paracelsus Medical Private University Salzburg; Salzburg Austria
| | - J.C. Dalphin
- Department of Respiratory Disease; University Hospital; University of Besançon; Besançon France
| | - J. Pekkanen
- Department of Health Protection; National Institute for Health and Welfare; Kuopio Finland
- Department of Public Health; University of Helsinki; Helsinki Finland
| | - R. Lauener
- Christine Kühne - Center for Allergy Research and Education (CK-CARE); Davos Switzerland
- Children's Hospital of Eastern Switzerland; St. Gallen Switzerland
| | - E. von Mutius
- LMU Munich; University Children's Hospital; Munich Germany
- Comprehensive Pneumology Centre Munich (CPC-M); German Centre for Lung Research (DZL); Munich Germany
| | - B. Schaub
- LMU Munich; University Children's Hospital; Munich Germany
- Comprehensive Pneumology Centre Munich (CPC-M); German Centre for Lung Research (DZL); Munich Germany
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Frossard CP, Lazarevic V, Gaïa N, Leo S, Doras C, Habre W, Schrenzel J, Burger D, Eigenmann PA. The farming environment protects mice from allergen-induced skin contact hypersensitivity. Clin Exp Allergy 2017; 47:805-814. [DOI: 10.1111/cea.12905] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/06/2017] [Accepted: 02/08/2017] [Indexed: 12/11/2022]
Affiliation(s)
- C. P. Frossard
- Inflammation and Allergy Research Group; University Hospitals of Geneva and University of Geneva; Geneva Switzerland
| | - V. Lazarevic
- Genomic Research Laboratory; Division of Infectious Diseases; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
- Division of Laboratory Medicine; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - N. Gaïa
- Genomic Research Laboratory; Division of Infectious Diseases; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
- Division of Laboratory Medicine; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - S. Leo
- Genomic Research Laboratory; Division of Infectious Diseases; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
- Division of Laboratory Medicine; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - C. Doras
- Division of Anesthesiology Investigation; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - W. Habre
- Division of Anesthesiology Investigation; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - J. Schrenzel
- Genomic Research Laboratory; Division of Infectious Diseases; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
- Division of Laboratory Medicine; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - D. Burger
- Inflammation and Allergy Research Group; University Hospitals of Geneva and University of Geneva; Geneva Switzerland
- Hans Wilsdorf Laboratory; Departments of Pediatrics, Anesthesiology, and Internal Medicine Specialties; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - P. A. Eigenmann
- Inflammation and Allergy Research Group; University Hospitals of Geneva and University of Geneva; Geneva Switzerland
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Thorsteinsdottir S, Thyssen JP, Stokholm J, Vissing NH, Waage J, Bisgaard H. Domestic dog exposure at birth reduces the incidence of atopic dermatitis. Allergy 2016; 71:1736-1744. [PMID: 27385647 DOI: 10.1111/all.12980] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2016] [Indexed: 12/25/2022]
Abstract
BACKGROUND While the etiopathogenesis of atopic dermatitis is complex and poorly understood, neonatal exposures are important for disease occurrence. However, the effect of dog exposure on the risk of atopic dermatitis is unresolved. OBJECTIVE We investigated whether domestic dog exposure affected the risk of atopic dermatitis in children during the first 3 years of life. METHODS Copenhagen Prospective Studies on Asthma in Childhood (COPSAC) are ongoing prospective clinical birth cohort studies. Data from 411 children born to mothers with asthma (COPSAC2000 ) and 700 unselected children (COPSAC2010 ) were analyzed following the same protocols at the same research site. Atopic dermatitis was diagnosed prospectively according to the Hanifin-Rajka criteria. Parental history of asthma, eczema, or rhinitis was defined by self-reported physician diagnosis. In the COPSAC2000 , maternal specific serum IgE against eight inhalant allergens was sampled after the children's birth and at pregnancy week 24 in the COPSAC2010 cohort. Associations between dog exposure and atopic dermatitis were analyzed by Cox proportional hazard regression models and adjusted for lifestyle confounders. RESULTS In the COPSAC2000 and COPSAC2010 cohorts, the risk of atopic dermatitis was significantly lower in children with domestic dog exposure (adjusted HR = 0.46 [0.25-0.87], P = 0.02; and adjusted HR = 0.58 [0.36-0.93], P = 0.03, respectively). The risk of atopic dermatitis decreased in a dose-dependent manner with increasing number of dogs (adjusted HR = 0.58 [0.38-0.89], P = 0.01) in the COPSAC2010 . The protective effect was restricted to children born to mothers with atopic disease in the unselected COPSAC2010 cohort (adjusted HR = 0.39 [0.19-0.82], P = 0.01), as no effect was observed in children born to mothers without atopic disease (adjusted HR = 0.92 [0.49-1.73], P = 0.79). Paternal atopic status did not affect the risk of atopic dermatitis. We found no significant interaction between the CD14 T/T genotype and domestic dog exposure in either cohort (COPSAC2000 , P = 0.36; and COPSAC2010 cohort, P = 0.42). CONCLUSION Neonatal domestic dog exposure was associated with a strongly reduced risk of atopic dermatitis in two independent birth cohorts and in a dose-dependent manner. While the mechanisms involved are unclear, our findings raise the question of whether in utero exposures may affect the risk of atopic dermatitis and emphasize the importance of the early environment for disease trajectory.
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Affiliation(s)
- S. Thorsteinsdottir
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - J. P. Thyssen
- Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - J. Stokholm
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - N. H. Vissing
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - J. Waage
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - H. Bisgaard
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
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Campbell B, Raherison C, Lodge CJ, Lowe AJ, Gislason T, Heinrich J, Sunyer J, Gómez Real F, Norbäck D, Matheson MC, Wjst M, Dratva J, de Marco R, Jarvis D, Schlünssen V, Janson C, Leynaert B, Svanes C, Dharmage SC. The effects of growing up on a farm on adult lung function and allergic phenotypes: an international population-based study. Thorax 2016; 72:236-244. [PMID: 27672121 DOI: 10.1136/thoraxjnl-2015-208154] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 07/06/2016] [Accepted: 07/22/2016] [Indexed: 02/05/2023]
Abstract
RATIONALE Evidence has suggested that exposure to environmental or microbial biodiversity in early life may impact subsequent lung function and allergic disease risk. OBJECTIVES To investigate the influence of childhood living environment and biodiversity indicators on atopy, asthma and lung function in adulthood. METHODS AND MEASUREMENTS The European Community Respiratory Health Survey II investigated ∼10 201 participants aged 26-54 years from 14 countries, including participants' place of upbringing (farm, rural environment or inner city) before age 5 years. A 'biodiversity score' was created based on childhood exposure to cats, dogs, day care, bedroom sharing and older siblings. Associations with lung function, bronchial hyper-responsiveness (BHR), allergic sensitisation, asthma and rhinitis were analysed. MAIN RESULTS As compared with a city upbringing, those with early-life farm exposure had less atopic sensitisation (adjusted OR 0.46, 95% CI 0.37 to 0.58), atopic BHR (0.54 (0.35 to 0.83)), atopic asthma (0.47 (0.28 to 0.81)) and atopic rhinitis (0.43 (0.32 to 0.57)), but not non-atopic outcomes. Less pronounced protective effects were observed for rural environment exposures. Women with a farm upbringing had higher FEV1 (adjusted difference 110 mL (64 to 157)), independent of sensitisation and asthma. In an inner city environment, a higher biodiversity score was related to less allergic sensitisation. CONCLUSIONS This is the first study to report beneficial effects of growing up on a farm on adult FEV1. Our study confirmed the beneficial effects of early farm life on sensitisation, asthma and rhinitis, and found a similar association for BHR. In persons with an urban upbringing, a higher biodiversity score predicted less allergic sensitisation, but to a lesser magnitude than a childhood farm environment.
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Affiliation(s)
- B Campbell
- Allergy & Lung Health Unit, Centre for Epidemiology & Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia
| | - C Raherison
- Unité Epidémiologie et Biostatistique, Université Bordeaux Segalen, Bordeaux, France
| | - C J Lodge
- Allergy & Lung Health Unit, Centre for Epidemiology & Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia.,Murdoch Children's Research Institute, Melbourne, Australia
| | - A J Lowe
- Allergy & Lung Health Unit, Centre for Epidemiology & Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia.,Murdoch Children's Research Institute, Melbourne, Australia
| | - T Gislason
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland.,Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - J Heinrich
- Instititute of Epidemiology I, German Research Centre for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany.,Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital Munich, Ludwig-Maximilians University Munich, Munich, Germany
| | - J Sunyer
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,Departament de Ciències Experimentals i de la Salut (UPF), Universitat Pompeu Fabra, Barcelona, Spain
| | - F Gómez Real
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway.,Centre for International Health, University of Bergen, Norway
| | - D Norbäck
- Department of Medical Sciences; Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden
| | - M C Matheson
- Allergy & Lung Health Unit, Centre for Epidemiology & Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia
| | - M Wjst
- Institute of Lung Biology and Health (iLBD), Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Munich-Neuherberg, Germany
| | - J Dratva
- Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - R de Marco
- Epidemiology and Medical Statistics, University of Verona, Verona, Italy
| | - D Jarvis
- National Heart and Lung Institute, Imperial College, London, UK
| | - V Schlünssen
- Section for Environment Occupation and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - C Janson
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - B Leynaert
- Centre de Recherche Albert Bonniot, Grenoble, France
| | - C Svanes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - S C Dharmage
- Allergy & Lung Health Unit, Centre for Epidemiology & Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia
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Stamper CE, Hoisington AJ, Gomez OM, Halweg-Edwards AL, Smith DG, Bates KL, Kinney KA, Postolache TT, Brenner LA, Rook GAW, Lowry CA. The Microbiome of the Built Environment and Human Behavior: Implications for Emotional Health and Well-Being in Postmodern Western Societies. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2016; 131:289-323. [PMID: 27793224 DOI: 10.1016/bs.irn.2016.07.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
It is increasingly evident that inflammation is an important determinant of cognitive function and emotional behaviors that are dysregulated in stress-related psychiatric disorders, such as anxiety and affective disorders. Inflammatory responses to physical or psychological stressors are dependent on immunoregulation, which is indicated by a balanced expansion of effector T-cell populations and regulatory T cells. This balance is in part driven by microbial signals. The hygiene or "old friends" hypothesis posits that exposure to immunoregulation-inducing microorganisms is reduced in modern urban societies, leading to an epidemic of inflammatory disease and increased vulnerability to stress-related psychiatric disorders. With the global trend toward urbanization, humans are progressively spending more time in built environments, thereby, experiencing limited exposures to these immunoregulatory "old friends." Here, we evaluate the implications of the global trend toward urbanization, and how this transition may affect human microbial exposures and human behavior.
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Affiliation(s)
- C E Stamper
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - A J Hoisington
- US Air Force Academy, Colorado Springs, CO, United States; Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO, United States
| | - O M Gomez
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | | | - D G Smith
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - K L Bates
- US Air Force Academy, Colorado Springs, CO, United States
| | - K A Kinney
- Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO, United States; University of Texas Austin, Austin, TX, United States
| | - T T Postolache
- Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO, United States; University of Maryland School of Medicine, Baltimore, MD, United States; VISN 5 Mental Illness Research Education and Clinical Center (MIRECC), Baltimore, MD, United States; Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, United States
| | - L A Brenner
- Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO, United States; Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, United States; University of Colorado, Aurora, CO, United States
| | - G A W Rook
- Center for Clinical Microbiology, UCL (University College London), London, United Kingdom
| | - C A Lowry
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States; Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO, United States; Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, United States; University of Colorado, Aurora, CO, United States.
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Abstract
The innate immune system is designed as an early defense system that recognizes and clears potential microbial invaders. The coagulation system co-evolved with the innate immune system from a common ancestral cellular origin, and these two systems continue to exhibit a remarkable degree of integration in their signaling pathways and regulatory circuits following tissue injury and microbial invasion. Inflammatory mediators generate procoagulant signals and intravascular thrombosis activates multiple components of the innate immune system. The success of recombinant human activated protein C for the treatment of human septic shock is likely attributable to its combined effects as an endogenous anticoagulant and an anti-inflammatory molecule. Further advances in the management of severe infections may accrue with a better understanding of the integral link between coagulation and innate immunity.
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Affiliation(s)
- Steven M. Opal
- Infectious Disease Division, Brown Medical School, Providence, Rhode Island, USA,
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Loss GJ, Depner M, Hose AJ, Genuneit J, Karvonen AM, Hyvärinen A, Roduit C, Kabesch M, Lauener R, Pfefferle PI, Pekkanen J, Dalphin JC, Riedler J, Braun-Fahrländer C, von Mutius E, Ege MJ. The Early Development of Wheeze. Environmental Determinants and Genetic Susceptibility at 17q21. Am J Respir Crit Care Med 2016; 193:889-97. [PMID: 26575599 DOI: 10.1164/rccm.201507-1493oc] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Growing up on a farm protects from childhood asthma and early wheeze. Virus-triggered wheeze in infancy predicts asthma in individuals with a genetic asthma risk associated with chromosome 17q21. OBJECTIVES To test environmental determinants of infections and wheeze in the first year of life, potential modifications of these associations by 17q21, and the implications for different trajectories of wheeze. METHODS We followed 983 children in rural areas of Europe from birth until age 6 years. Symptoms of wheeze, rhinitis, fever, and environmental exposures were documented with weekly diaries during year 1. Asthma at age 6 was defined as ever having a reported doctor's diagnosis. Single-nucleotide polymorphisms related to ORMDL3 (rs8076131) and GSDMB (rs7216389, rs2290400) at 17q21 were genotyped. MEASUREMENTS AND MAIN RESULTS Early wheeze was positively associated with presence of older siblings among carriers of known asthma risk alleles at 17q21 (e.g., rs8076131) (adjusted odds ratio [aOR], 1.53; 95% confidence interval [CI], 1.16-2.01). Exposure to farm animal sheds was inversely related to wheeze (aOR, 0.44; 95% CI, 0.33-0.60). Both effects were similarly observed in children with transient wheeze up to age 3 years without subsequent development of asthma (aOR, 1.71 [95% CI, 1.09-2.67]; and aOR, 0.48 [95% CI, 0.30-0.76], respectively). CONCLUSIONS These findings suggest that the chromosome 17q21 locus relates to episodes of acute airway obstruction common to both transient wheeze and asthma. The previously identified asthma risk alleles are the ones susceptible to environmental influences. Thus, this gene-environment interaction reveals two faces of 17q21: The same genotype constitutes genetic risk and allows for environmental protection, thereby providing options for prospective prevention strategies.
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Affiliation(s)
- Georg J Loss
- 1 Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, Munich, Germany.,2 Department of Pediatrics, University of California, San Diego, La Jolla, California
| | - Martin Depner
- 1 Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Alexander J Hose
- 1 Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Jon Genuneit
- 3 Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - Anne M Karvonen
- 4 Department of Health Protection, National Institute for Health and Welfare, Kuopio, Finland
| | - Anne Hyvärinen
- 4 Department of Health Protection, National Institute for Health and Welfare, Kuopio, Finland
| | - Caroline Roduit
- 5 Children's Hospital, University of Zürich, Zürich, Switzerland.,6 Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | - Michael Kabesch
- 7 Department of Pediatric Pneumology and Allergy, KUNO Children's University Hospital Regensburg, Regensburg, Germany.,8 Clinic for Pediatric Pneumology and Neonatology, Hannover Medical School, Hannover, Germany
| | - Roger Lauener
- 6 Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland.,9 Children's Hospital of Eastern Switzerland, St. Gallen, Switzerland
| | - Petra Ina Pfefferle
- 10 Comprehensive Biomaterial Bank Marburg CBBM, Center for Tumor Biology and Immunology, Faculty of Medicine, Philipp University of Marburg, Marburg, Germany.,11 German Center for Lung Research, Giessen, Germany
| | - Juha Pekkanen
- 4 Department of Health Protection, National Institute for Health and Welfare, Kuopio, Finland.,12 Department of Public Health, University of Helsinki, Helsinki, Finland
| | - Jean-Charles Dalphin
- 13 Department of Respiratory Disease, University of Besançon, University Hospital, Besançon, France
| | - Josef Riedler
- 14 Children's Hospital Schwarzach, Schwarzach, Austria.,15 Teaching Hospital of Paracelsus Private Medical University of Salzburg, Salzburg, Austria
| | - Charlotte Braun-Fahrländer
- 16 Swiss Tropical and Public Health Institute, Basel, Switzerland.,17 University of Basel, Basel, Switzerland; and
| | - Erika von Mutius
- 1 Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, Munich, Germany.,18 German Center for Lung Research, Comprehensive Pneumology Center Munich, Munich, Germany
| | - Markus J Ege
- 1 Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, Munich, Germany.,18 German Center for Lung Research, Comprehensive Pneumology Center Munich, Munich, Germany
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Karampitsakos T, Woolard T, Bouros D, Tzouvelekis A. Toll-like receptors in the pathogenesis of pulmonary fibrosis. Eur J Pharmacol 2016; 808:35-43. [PMID: 27364757 DOI: 10.1016/j.ejphar.2016.06.045] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/26/2016] [Accepted: 06/27/2016] [Indexed: 02/08/2023]
Abstract
Pulmonary fibrosis (PF) constitutes the end stage of a broad range of heterogeneous interstitial lung diseases, characterized by the destruction of the pulmonary parenchyma, deposition of extracellular matrix and dramatic changes in the phenotype of both fibroblasts and alveolar epithelial cells. More than 200 causes of pulmonary fibrosis have been identified so far, yet the most common form is idiopathic pulmonary fibrosis (IPF). IPF is a lethal lung disorder of unknown etiology with a gradually increasing worldwide incidence and a median survival of 3-5 years from the time of diagnosis. Despite intense research efforts, the pathogenesis remains elusive and no effective treatment is available. Accumulating body of evidence suggests an abnormal wound healing response followed by extracellular matrix deposition, destruction of lung architecture, ultimately leading to respiratory failure. The contribution of immune system in lung fibrogenesis had been largely underscored due to the absence of response to immunosuppressive agents; however, the premise that lung fibrosis has an immunologic background has been recently revived. Toll-like receptors (TLRs) are pattern recognition receptors (PRRs), which link innate and adaptive immune response and regulate wound healing. TLRs promote tissue repair or fibrosis in many disease settings including lung fibrosis, albeit with profound differences depending on the cellular microenvironment. This review summarizes the current state of knowledge regarding the mechanistic implications between TLRs and lung fibrosis and highlights the therapeutic potential of targeting TLR signaling at the ligand or receptor level.
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Affiliation(s)
- Theodoros Karampitsakos
- Academic Department of Pneumonology, Hospital for Diseases of the Chest, "Sotiria", Medical School, University of Athens, Messogion Avenue 152, Athens 11527, Greece
| | - Tony Woolard
- Department of Internal Medicine, Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, P.O. Box 208057 New Haven, CT, USA
| | - Demosthenes Bouros
- Academic Department of Pneumonology, Hospital for Diseases of the Chest, "Sotiria", Medical School, University of Athens, Messogion Avenue 152, Athens 11527, Greece
| | - Argyris Tzouvelekis
- Department of Internal Medicine, Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, P.O. Box 208057 New Haven, CT, USA.
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Saliganti V, Kapila R, Kapila S, Bhat MI. Probiotics in the modulation of maternal–infant immunity: Implications for allergic diseases. FOOD REVIEWS INTERNATIONAL 2016. [DOI: 10.1080/87559129.2016.1198913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Zakeri A, Borji H, Haghparast A. Interaction Between Helminths and Toll-Like Receptors: Possibilities and Potentials for Asthma Therapy. Int Rev Immunol 2016; 35:219-48. [PMID: 27120222 DOI: 10.3109/08830185.2015.1096936] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Toll-like receptors (TLRs) are essential components of the innate immune system. They play an important role in the pathogenesis of allergic diseases, especially asthma. Since TLRs significantly orchestrate innate and adaptive immune response, their manipulation has widely been considered as a potential approach to control asthma symptoms. It is well established that helminths have immunoregulatory effects on host immune responses, especially innate immunity. They release bioactive molecules such as excretory-secretory (ES) products manipulating TLRs expression and signaling. Thus, given the promising results derived from preclinical studies, harnessing helminth-derived molecules affecting TLRs can be considered as a potential biological therapy for allergic diseases. Prospectively, the data that are available at present suggest that, in the near future, it is possible that helminth antigens will offer new therapeutic strategies and druggable targets for fighting allergic diseases. This review describes the interactions between helminths and TLRs and discusses the potential possibilities for asthma therapy. In this opinion paper, the authors aimed to review the updated literatures on the interplay between helminths, TLRs, and asthma with a view to proposing helminth-based asthma therapy.
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Affiliation(s)
- Amin Zakeri
- a Parasitology Section, Department of Pathobiology , Faculty of Veterinary Medicine, Ferdowsi University of Mashhad , Mashhad , Iran.,b Immunology Sections, Department of Pathobiology, Faculty of Veterinary Medicine , Faculty of Veterinary Medicine, Ferdowsi University of Mashhad , Mashhad , Iran
| | - Hassan Borji
- a Parasitology Section, Department of Pathobiology , Faculty of Veterinary Medicine, Ferdowsi University of Mashhad , Mashhad , Iran
| | - Alireza Haghparast
- b Immunology Sections, Department of Pathobiology, Faculty of Veterinary Medicine , Faculty of Veterinary Medicine, Ferdowsi University of Mashhad , Mashhad , Iran.,c Biotechnology Section, Department of Pathobiology , Faculty of Veterinary Medicine, Ferdowsi University of Mashhad , Mashhad , Iran
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Han M, Chung Y, Young Hong J, Rajput C, Lei J, Hinde JL, Chen Q, Weng SP, Bentley JK, Hershenson MB. Toll-like receptor 2-expressing macrophages are required and sufficient for rhinovirus-induced airway inflammation. J Allergy Clin Immunol 2016; 138:1619-1630. [PMID: 27084403 DOI: 10.1016/j.jaci.2016.01.037] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 12/29/2015] [Accepted: 01/22/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND We have shown that rhinovirus, a cause of asthma exacerbation, colocalizes with CD68+ and CD11b+ airway macrophages after experimental infection in human subjects. We have also shown that rhinovirus-induced cytokine expression is abolished in Toll-like receptor (TLR2)-/- bone marrow-derived macrophages. OBJECTIVE We hypothesize that TLR2+ macrophages are required and sufficient for rhinovirus-induced airway inflammation in vivo. METHODS Naive and ovalbumin (OVA)-sensitized and challenged C57BL/6 wild-type and TLR2-/- mice were infected with RV1B, followed by IgG or anti-TLR2, to determine the requirement and sufficiency of TLR2 for rhinovirus-induced airway responses. Bone marrow chimera experiments using OVA-treated C57BL/6 and TLR2-/- mice were also performed. Finally, naive TLR2-/- mice underwent intranasal transfer of bone marrow-derived wild-type macrophages. RESULTS RV1B infection of naive wild-type mice induced an influx of airway neutrophils and CD11b+ exudative macrophages, which was reduced in TLR2-/- mice. After allergen exposure, rhinovirus-induced neutrophilic and eosinophilic airway inflammation and hyperresponsiveness were reduced in TLR2-/- and anti-TLR2-treated mice. Transfer of TLR2-/- bone marrow into wild-type, OVA-treated C57BL/6 mice blocked rhinovirus-induced airway responses, whereas transfer of wild-type marrow to TLR2-/- mice restored them. Finally, transfer of wild-type macrophages to naive TLR2-/- mice was sufficient for neutrophilic inflammation after rhinovirus infection, whereas macrophages treated with IL-4 (to induce M2 polarization) were sufficient for eosinophilic inflammation, mucous metaplasia, and airways hyperresponsiveness. CONCLUSIONS TLR2 is required for early inflammatory responses induced by rhinovirus, and TLR2+ macrophages are sufficient to confer airway inflammation to TLR2-/- mice, with the pattern of inflammation depending on the macrophage activation state.
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Affiliation(s)
- Mingyuan Han
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Yutein Chung
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Jun Young Hong
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Mich
| | - Charu Rajput
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Jing Lei
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Joanna L Hinde
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Qiang Chen
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Steven P Weng
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - J Kelley Bentley
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich
| | - Marc B Hershenson
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Mich; Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Mich.
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Grieger JA, Clifton VL, Tuck AR, Wooldridge AL, Robertson SA, Gatford KL. In utero Programming of Allergic Susceptibility. Int Arch Allergy Immunol 2016; 169:80-92. [PMID: 27044002 DOI: 10.1159/000443961] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Around 30-40% of the world's population will experience allergy, the most common and earliest-onset noncommunicable disease. With a steady rise in the incidence of allergic disease over recent decades, up to 18% of children will suffer a respiratory, food or skin allergy before their 18th birthday. There is compelling evidence that the risk of developing allergy is influenced by early life events and particularly in utero exposures. METHODS A comprehensive literature review was undertaken which outlines prenatal risk factors and potential mechanisms underlying the development of allergy in childhood. RESULTS Exposures including maternal cigarette smoking, preterm birth and Caesarean delivery are implicated in predisposing infants to the later development of allergy. In contrast, restricted growth in utero, a healthy maternal diet and a larger family size are protective, but the mechanisms here are unclear and require further investigation. CONCLUSION To ameliorate the allergy pandemic in young children, we must define prenatal mechanisms that alter the programming of the fetal immune system and also identify specific targets for antenatal interventions.
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Affiliation(s)
- Jessica A Grieger
- Robinson Research Institute and School of Medicine, University ofAdelaide, Adelaide, S.A., Australia
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Zhang Y, Collier F, Naselli G, Saffery R, Tang MLK, Allen KJ, Ponsonby AL, Harrison LC, Vuillermin P. Cord blood monocyte–derived inflammatory cytokines suppress IL-2 and induce nonclassic “T
H
2-type” immunity associated with development of food allergy. Sci Transl Med 2016; 8. [DOI: 10.1126/scitranslmed.aad4322] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Infants who develop food allergy display hyperresponsive innate immunity at birth that promotes nonclassical T
H
2 differentiation.
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Affiliation(s)
- Yuxia Zhang
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- The University of Melbourne, Parkville, Victoria 3010, Australia
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, China
| | - Fiona Collier
- Barwon Health, Geelong, Victoria 3220, Australia
- Deakin University, Geelong, Victoria 3216, Australia
| | - Gaetano Naselli
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Richard Saffery
- The University of Melbourne, Parkville, Victoria 3010, Australia
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Mimi LK. Tang
- The University of Melbourne, Parkville, Victoria 3010, Australia
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Katrina J. Allen
- The University of Melbourne, Parkville, Victoria 3010, Australia
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Anne-Louise Ponsonby
- The University of Melbourne, Parkville, Victoria 3010, Australia
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Leonard C. Harrison
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Peter Vuillermin
- The University of Melbourne, Parkville, Victoria 3010, Australia
- Barwon Health, Geelong, Victoria 3220, Australia
- Deakin University, Geelong, Victoria 3216, Australia
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria 3052, Australia
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Schuijs MJ, Willart MA, Vergote K, Gras D, Deswarte K, Ege MJ, Madeira FB, Beyaert R, van Loo G, Bracher F, von Mutius E, Chanez P, Lambrecht BN, Hammad H. Farm dust and endotoxin protect against allergy through A20 induction in lung epithelial cells. Science 2015; 349:1106-10. [DOI: 10.1126/science.aac6623] [Citation(s) in RCA: 393] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Cho MK, Park MK, Kang SA, Park SK, Lyu JH, Kim DH, Park HK, Yu HS. TLR2-dependent amelioration of allergic airway inflammation by parasitic nematode type II MIF in mice. Parasite Immunol 2015; 37:180-91. [PMID: 25559209 DOI: 10.1111/pim.12172] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 12/24/2014] [Indexed: 12/29/2022]
Abstract
In our previous studies, the recombinant type II macrophage migration inhibitory factor homologue (rAs-MIF) secreted from Anisakis simplex suppressed experimental inflammation mouse model through IL-10 production and CD4(+)CD25(+)Foxp3(+) T-cell recruitment. Also, TLR2 gene expression was significantly increased following rAs-MIF treatment. To know the relation between TLR2 and amelioration mechanisms of rAs-MIF, we induced allergic airway inflammation by ovalbumin and alum with or without rAs-MIF under TLR2 blocking systems [anti-TLR2-specific antibody (α-mTLR2 Ab) treatment and using TLR2 knockout mice]. As a result, the amelioration effects of rAs-MIF in allergic airway inflammation model (diminished inflammation and Th2 response in the lung, increased IL-10 secretion, CD4(+)CD25(+)Foxp3(+) T-cell recruitment) were diminished under two of the TLR2 blocking model. The expression of TLR2 on the surface of lung epithelial cell was significantly elevated by rAs-MIF treatment or Pam3CSK (TLR2-specific agonist) treatment, but they might have some competition effect on the elevation of TLR2 expression. In addition, the elevation of IL-10 gene expression by rAs-MIF treatment was significantly inhibited by α-mTLR2 Ab or Pam3CSK pretreatment. In conclusion, anti-inflammatory effects of the rAs-MIF on OVA-induced allergic airway inflammation might be closely related to TLR2.
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Affiliation(s)
- M K Cho
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan-si, Korea
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46
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Modulation of Th1/Th2 immune responses by killed Propionibacterium acnes and its soluble polysaccharide fraction in a type I hypersensitivity murine model: induction of different activation status of antigen-presenting cells. J Immunol Res 2015; 2015:132083. [PMID: 25973430 PMCID: PMC4418006 DOI: 10.1155/2015/132083] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/25/2014] [Accepted: 10/25/2014] [Indexed: 01/15/2023] Open
Abstract
Propionibacterium acnes (P. acnes) is a gram-positive anaerobic bacillus present in normal human skin microbiota, which exerts important immunomodulatory effects, when used as heat- or phenol-killed suspensions. We previously demonstrated that heat-killed P. acnes or its soluble polysaccharide (PS), extracted from the bacterium cell wall, suppressed or potentiated the Th2 response to ovalbumin (OVA) in an immediate hypersensitivity model, depending on the treatment protocol. Herein, we investigated the mechanisms responsible for these effects, using the same model and focusing on the activation status of antigen-presenting cells (APCs). We verified that higher numbers of APCs expressing costimulatory molecules and higher expression levels of these molecules are probably related to potentiation of the Th2 response to OVA induced by P. acnes or PS, while higher expression of toll-like receptors (TLRs) seems to be related to Th2 suppression. In vitro cytokines production in cocultures of dendritic cells and T lymphocytes indicated that P. acnes and PS seem to perform their effects by acting directly on APCs. Our data suggest that P. acnes and PS directly act on APCs, modulating the expression of costimulatory molecules and TLRs, and these differently activated APCs drive distinct T helper patterns to OVA in our model.
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Schröder PC, Li J, Wong GWK, Schaub B. The rural-urban enigma of allergy: what can we learn from studies around the world? Pediatr Allergy Immunol 2015; 26:95-102. [PMID: 25620193 DOI: 10.1111/pai.12341] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/20/2015] [Indexed: 12/27/2022]
Abstract
Childhood asthma and related allergic conditions have become the most common chronic disorders in the Western world. Many studies from around the world have demonstrated an increasing trend of asthma prevalence over the last few decades (Lancet, 368, 2004, 733). A few recent reports also suggested that childhood asthma prevalence may be showing a plateau or even a decline in few developed countries. Given the rapid changes in the prevalence over a short period of time, environmental factors are the more likely candidates explaining such trend. One of the most consistent epidemiological findings was that subjects living in the rural areas had lower prevalence of allergies when compared to those from urban areas (Clin Exp Allergy 30, 2000, 187; Pediatr Pulmonol 44, 2009, 793). Clear understanding of the mechanisms of how the environmental determinants in the rural environment may affect the early immune system resulting in lower risk of allergies and asthma will facilitate the development of future primary preventive strategies. In this study, we review recent data from around the world and explore the epidemiology and mechanistic studies that may explain the rural-urban difference of allergies.
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Affiliation(s)
- Paul C Schröder
- LMU Munich, University Children's Hospital, Munich, Germany; Member of the German Center for Lung Research (DZL), Munich, Germany
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48
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van der Vlugt LEPM, Mlejnek E, Ozir-Fazalalikhan A, Janssen Bonas M, Dijksman TR, Labuda LA, Schot R, Guigas B, Möller GM, Hiemstra PS, Yazdanbakhsh M, Smits HH. CD24(hi)CD27(+) B cells from patients with allergic asthma have impaired regulatory activity in response to lipopolysaccharide. Clin Exp Allergy 2014; 44:517-28. [PMID: 24261983 DOI: 10.1111/cea.12238] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 10/02/2013] [Accepted: 11/15/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Regulatory B cells have been identified that strongly reduce allergic and auto-immune inflammation in experimental models by producing IL-10. Recently, several human regulatory B-cell subsets with an impaired function in auto-immunity have been described, but there is no information on regulatory B cells in allergic asthma. OBJECTIVE In this study, the frequency and function of IL-10 producing B-cell subsets in allergic asthma were investigated. METHODS Isolated peripheral blood B cells from 13 patients with allergic asthma and matched healthy controls were analyzed for the expression of different regulatory B-cell markers. Next, the B cells were activated by lipopolysaccharide (LPS), CpG or through the B-cell receptor, followed by co-culture with endogenous memory CD4(+) T cells and house dust mite allergen DerP1. RESULTS Lower number of IL-10 producing B cells were found in patients in response to LPS, however, this was not the case when B cells were activated through the B-cell receptor or by CpG. Further dissection showed that only the CD24(hi)CD27(+) B-cell subset was reduced in number and IL-10 production to LPS. In response to DerP1, CD4(+) T cells from patients co-cultured with LPS-primed total B cells produced less IL-10 compared to similar cultures from controls. These results are in line with the finding that sorted CD24(hi)CD27(+) B cells are responsible for the induction of IL-10(+) CD4(+) T cells. CONCLUSIONS Taken together, these data indicate that CD24(hi)CD27(+) B cells from allergic asthma patients produce less IL-10 in response to LPS leading to a weaker IL-10 induction in T cells in response to DerP1, which may play a role in allergic asthma.
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Affiliation(s)
- L E P M van der Vlugt
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
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Yu Y, Yip KH, Tam IYS, Sam SW, Ng CW, Zhang W, Lau HYA. Differential effects of the Toll-like receptor 2 agonists, PGN and Pam3CSK4 on anti-IgE induced human mast cell activation. PLoS One 2014; 9:e112989. [PMID: 25398056 PMCID: PMC4232580 DOI: 10.1371/journal.pone.0112989] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Accepted: 10/17/2014] [Indexed: 01/13/2023] Open
Abstract
Mast cells are pivotal in the pathogenesis of allergy and inflammation. In addition to the classical IgE-dependent mechanism involving crosslinking of the high-affinity receptor for IgE (FcεRI), mast cells are also activated by Toll-like receptors (TLRs) which are at the center of innate immunity. In this study, we demonstrated that the response of LAD2 cells (a human mast cell line) to anti-IgE was altered in the presence of the TLR2 agonists peptidoglycan (PGN) and tripalmitoyl-S-glycero-Cys-(Lys)4 (Pam3CSK4). Pretreatment of PGN and Pam3CSK4 inhibited anti-IgE induced calcium mobilization and degranulation without down-regulation of FcεRI expression. Pam3CSK4 but not PGN acted in synergy with anti-IgE for IL-8 release when the TLR2 agonist was added simultaneously with anti-IgE. Studies with inhibitors of key enzymes implicated in mast cell signaling revealed that the synergistic release of IL-8 induced by Pam3CSK4 and anti-IgE involved ERK and calcineurin signaling cascades. The differential modulations of anti-IgE induced mast cell activation by PGN and Pam3CSK4 suggest that dimerization of TLR2 with TLR1 or TLR6 produced different modulating actions on FcεRI mediated human mast cell activation.
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Affiliation(s)
- Yangyang Yu
- Shenzhen Key Laboratory for Translational Medicine of Dermatology, Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong Province, China
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Kwok Ho Yip
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Issan Yee San Tam
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Sze Wing Sam
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Chun Wai Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Wei Zhang
- Shenzhen Key Laboratory for Translational Medicine of Dermatology, Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong Province, China
| | - Hang Yung Alaster Lau
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
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50
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Braza F, Chesne J, Castagnet S, Magnan A, Brouard S. Regulatory functions of B cells in allergic diseases. Allergy 2014; 69:1454-63. [PMID: 25060230 DOI: 10.1111/all.12490] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2014] [Indexed: 12/24/2022]
Abstract
B cells are essentially described for their capacity to produce antibodies ensuring anti-infectious immunity or deleterious responses in the case of autoimmunity or allergy. However, abundant data described their ability to restrain inflammation by diverse mechanisms. In allergy, some regulatory B-cell subsets producing IL-10 have been recently described as potent suppressive cells able to restrain inflammatory responses both in vitro and in vivo by regulatory T-cell differentiation or directly inhibiting T-cell-mediated inflammation. A specific deficit in regulatory B cells participates to more severe allergic inflammation. Induction of allergen tolerance through specific immunotherapy induces a specific expansion of these cells supporting their role in establishment of allergen tolerance. However, the regulatory functions carried out by B cells are not exclusively IL-10 dependent. Indeed, other regulatory mechanisms mediated by B cells are (i) the production of TGF-β, (ii) the promotion of T-cell apoptosis by Fas-Fas ligand or granzyme-B pathways, and (iii) their capacity to produce inhibitory IgG4 and sialylated IgG able to mediate anti-inflammatory mechanisms. This points to Bregs as interesting targets for the development of new therapies to induce allergen tolerance. In this review, we highlight advances in the study of regulatory mechanisms mediated by B cells and outline what is known about their phenotype as well as their suppressive role in allergy from studies in both mice and humans.
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Affiliation(s)
- F. Braza
- INSERM; UMR 1087; l'institut du Thorax; Nantes France
- CNRS; UMR 6291; Institut de Transplantation Urologie Néphrologie du Centre Hospitalier Universitaire Hôtel Dieu; Nantes France
- INSERM; UMR U1064; Institut de Transplantation Urologie Néphrologie du Centre Hospitalier Universitaire Hôtel Dieu; Nantes France
- Université de Nantes; Nantes France
| | - J. Chesne
- INSERM; UMR 1087; l'institut du Thorax; Nantes France
- CNRS; UMR 6291; Institut de Transplantation Urologie Néphrologie du Centre Hospitalier Universitaire Hôtel Dieu; Nantes France
- INSERM; UMR U1064; Institut de Transplantation Urologie Néphrologie du Centre Hospitalier Universitaire Hôtel Dieu; Nantes France
- Université de Nantes; Nantes France
| | - S. Castagnet
- Laboratoire HLA; Établissement Français du Sang; Nantes France
| | - A. Magnan
- INSERM; UMR 1087; l'institut du Thorax; Nantes France
- CNRS; UMR 6291; Institut de Transplantation Urologie Néphrologie du Centre Hospitalier Universitaire Hôtel Dieu; Nantes France
- Université de Nantes; Nantes France
- CHU Nantes; l'institut du Thorax; Service de Pneumologie; Nantes France
| | - S. Brouard
- INSERM; UMR U1064; Institut de Transplantation Urologie Néphrologie du Centre Hospitalier Universitaire Hôtel Dieu; Nantes France
- Université de Nantes; Nantes France
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