1
|
Schoos AMM. Atopic diseases-Diagnostics, mechanisms, and exposures. Pediatr Allergy Immunol 2024; 35:e14198. [PMID: 39016386 DOI: 10.1111/pai.14198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 06/30/2024] [Accepted: 07/04/2024] [Indexed: 07/18/2024]
Abstract
Epidemiological data suggest that atopic diseases begin in early life and that most cases present clinically during early childhood. The diseases are highly prevalent and increase as communities adopt western lifestyles. Disentangling the pathophysiological mechanisms leading to disease debut is necessary to identify beneficial/harmful exposures so that successful prevention and treatment can be generated. The objective of this review is to explore the definition of atopy and mechanisms of atopic diseases, and to investigate the importance of environmental factors in early life, prior to disease development. First, the distribution of sIgE levels in children is investigated, as this is one of the main criteria for the definition of atopy. Thereafter, it is explored how studies of parental atopic status, sensitization patterns, and early debut and severity of atopic dermatitis have substantiated the theory of an early-life window of opportunity for intervention that precedes the development of atopic diseases in childhood. Then, it is examined whether early-life exposures such as breastfeeding, dogs, cats, and house dust mites in the home perinatally constitute important influencers in this crucial time of life. Finally, it is discussed how these findings could be validated in randomized controlled trials, which might prepare the ground for improved diagnostics and prevention strategies to mitigate the current atopic pandemic.
Collapse
Affiliation(s)
- Ann-Marie Malby Schoos
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
2
|
Lundberg B, Merid SK, Um-Bergström P, Wang G, Bergström A, Ekström S, Kull I, Melén E, Hallberg J. Lung function in young adulthood in relation to moderate-to-late preterm birth. ERJ Open Res 2024; 10:00701-2023. [PMID: 38259815 PMCID: PMC10801715 DOI: 10.1183/23120541.00701-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/14/2023] [Indexed: 01/24/2024] Open
Abstract
Background Moderate-to-late preterm birth (32 to <37 weeks of gestation) has been associated with impaired lung function in adolescence, but data in adulthood and physiological phenotyping beyond spirometry are scarce. We aimed to investigate lung function development from adolescence into young adulthood and to provide physiological phenotyping in individuals born moderate-to-late preterm. Methods Lung function data from individuals born moderate-to-late preterm (n=110) and term (37 to <42 weeks of gestation, n=1895) in the Swedish birth cohort BAMSE were used for analysis and included dynamic spirometry, fractional exhaled nitric oxide and multiple breath nitrogen wash-out. Data from 16- and 24-year follow-ups were analysed using regression models stratified on sex and adjusted for smoking. Data-driven latent class analysis was used to phenotype moderate-to-late preterm individuals at 24 years, and groups were related to background factors. Results Males born moderate-to-late preterm had lower forced expiratory volume in 1 s (FEV1) at 24 years of age (-0.28 z-score, p=0.045), compared to males born term. In females, no difference was seen at 24 years, partly explained by a significant catch up in FEV1 between 16 and 24 years (0.18 z-score, p=0.01). Lung function phenotypes described as "asthma-like", "dysanapsis-like" and "preterm reference" were identified within the preterm group. Maternal overweight in early pregnancy was associated with "asthma-like" group membership (OR 3.59, p=0.02). Conclusion Our results show impaired FEV1 at peak lung function in males born moderate-to-late preterm, while females born moderate-to-late preterm had significant catch up between the ages of 16 and 24 years. Several phenotypes of lung function impairment exist in individuals born moderate-to-late preterm.
Collapse
Affiliation(s)
- Björn Lundberg
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Simon Kebede Merid
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Petra Um-Bergström
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Gang Wang
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Institute of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Sichuan, China
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Sandra Ekström
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Inger Kull
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Erik Melén
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Jenny Hallberg
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| |
Collapse
|
3
|
Prevention of food allergy in infancy: the role of maternal interventions and exposures during pregnancy and lactation. THE LANCET. CHILD & ADOLESCENT HEALTH 2023; 7:358-366. [PMID: 36871575 DOI: 10.1016/s2352-4642(22)00349-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/10/2022] [Accepted: 11/24/2022] [Indexed: 03/06/2023]
Abstract
There is increased focus on the role of maternal interventions in the prevention of food allergy in infancy. There is no role for maternal dietary modifications during pregnancy or lactation, such as allergen avoidance, as a means of infant allergy prevention. Although exclusive breastfeeding is the recommended infant nutrition source globally, the effect of breastfeeding on infant allergy prevention remains unclear. There is emerging evidence that irregular cow's milk exposure (ie, infrequent formula supplementation) might increase the risk of cow's milk allergy. Although further studies are required, there is also emerging evidence that maternal peanut ingestion during breastfeeding along with early peanut introduction in infancy might have a preventive role. The effect of maternal dietary supplementation with vitamin D, omega-3, and prebiotics or probiotics remains unclear.
Collapse
|
4
|
Wang G, Hallberg J, Faner R, Koefoed HJ, Kebede Merid S, Klevebro S, Björkander S, Gruzieva O, Pershagen G, van Hage M, Guerra S, Bottai M, Georgelis A, Gehring U, Bergström A, Vonk JM, Kull I, Koppelman GH, Agusti A, Melén E. Plasticity of Individual Lung Function States from Childhood to Adulthood. Am J Respir Crit Care Med 2023; 207:406-415. [PMID: 36409973 PMCID: PMC9940138 DOI: 10.1164/rccm.202203-0444oc] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 11/21/2022] [Indexed: 11/23/2022] Open
Abstract
Rationale: Recent evidence highlights the importance of optimal lung development during childhood for health throughout life. Objectives: To explore the plasticity of individual lung function states during childhood. Methods: Prebronchodilator FEV1 z-scores determined at age 8, 16, and 24 years in the Swedish population-based birth cohort BAMSE (Swedish abbreviation for Child [Barn], Allergy, Milieu, Stockholm, Epidemiological study) (N = 3,069) were used. An unbiased, data-driven dependent mixture model was applied to explore lung function states and individual state chains. Lung function catch-up was defined as participants moving from low or very low states to normal or high or very high states, and growth failure as moving from normal or high or very high states to low or very low states. At 24 years, we compared respiratory symptoms, small airway function (multiple-breath washout), and circulating inflammatory protein levels, by using proteomics, across states. Models were replicated in the independent Dutch population-based PIAMA (Prevention and Incidence of Asthma and Mite Allergy) cohort. Measurements and Main Results: Five lung function states were identified in BAMSE. Lung function catch-up and growth failure were observed in 74 (14.5%) BAMSE participants with low or very low states and 36 (2.4%) participants with normal or high or very high states, respectively. The occurrence of catch-up and growth failure was replicated in PIAMA. Early-life risk factors were cumulatively associated with the very low state, as well as with catch-up (inverse association) and growth failure. The very low state as well as growth failure were associated with respiratory symptoms, airflow limitation, and small airway dysfunction at adulthood. Proteomics identified IL-6 and CXCL10 (C-X-C motif chemokine 10) as potential biomarkers of impaired lung function development. Conclusions: Individual lung function states during childhood are plastic, including catch-up and growth failure.
Collapse
Affiliation(s)
- Gang Wang
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Sichuan, China
- Department of Clinical Science and Education, Södersjukhuset
- Institute of Environmental Medicine, and
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Jenny Hallberg
- Department of Clinical Science and Education, Södersjukhuset
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Rosa Faner
- Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS)
| | | | | | - Susanna Klevebro
- Department of Clinical Science and Education, Södersjukhuset
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | | | - Olena Gruzieva
- Institute of Environmental Medicine, and
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Göran Pershagen
- Institute of Environmental Medicine, and
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Marianne van Hage
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Stefano Guerra
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
- ISGlobal, Barcelona, Spain
| | - Matteo Bottai
- Division of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Antonios Georgelis
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Ulrike Gehring
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands; and
| | - Anna Bergström
- Institute of Environmental Medicine, and
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Judith M. Vonk
- Groningen Research Institute for Asthma and COPD (GRIAC) and
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Inger Kull
- Department of Clinical Science and Education, Södersjukhuset
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Gerard H. Koppelman
- Groningen Research Institute for Asthma and COPD (GRIAC) and
- Department of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Alvar Agusti
- Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS)
- Cátedra de Salud Respiratoria and
- Respiratory Institute, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Erik Melén
- Department of Clinical Science and Education, Södersjukhuset
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| |
Collapse
|
5
|
Valverde-Molina J, García-Marcos L. Microbiome and Asthma: Microbial Dysbiosis and the Origins, Phenotypes, Persistence, and Severity of Asthma. Nutrients 2023; 15:nu15030486. [PMID: 36771193 PMCID: PMC9921812 DOI: 10.3390/nu15030486] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
The importance of the microbiome, and of the gut-lung axis in the origin and persistence of asthma, is an ongoing field of investigation. The process of microbial colonisation in the first three years of life is fundamental for health, with the first hundred days of life being critical. Different factors are associated with early microbial dysbiosis, such as caesarean delivery, artificial lactation and antibiotic therapy, among others. Longitudinal cohort studies on gut and airway microbiome in children have found an association between microbial dysbiosis and asthma at later ages of life. A low α-diversity and relative abundance of certain commensal gut bacterial genera in the first year of life are associated with the development of asthma. Gut microbial dysbiosis, with a lower abundance of Phylum Firmicutes, could be related with increased risk of asthma. Upper airway microbial dysbiosis, especially early colonisation by Moraxella spp., is associated with recurrent viral infections and the development of asthma. Moreover, the bacteria in the respiratory system produce metabolites that may modify the inception of asthma and is progression. The role of the lung microbiome in asthma development has yet to be fully elucidated. Nevertheless, the most consistent finding in studies on lung microbiome is the increased bacterial load and the predominance of proteobacteria, especially Haemophilus spp. and Moraxella catarrhalis. In this review we shall update the knowledge on the association between microbial dysbiosis and the origins of asthma, as well as its persistence, phenotypes, and severity.
Collapse
Affiliation(s)
- José Valverde-Molina
- Department of Paediatrics, Santa Lucía General University Hospital, 30202 Cartagena, Spain
| | - Luis García-Marcos
- Paediatric Allergy and Pulmonology Units, Virgen de la Arrixaca University Children’s Hospital, University of Murcia and IMIB Biomedical Research Institute, 20120 Murcia, Spain
- Correspondence:
| |
Collapse
|
6
|
Hedman L, Almqvist L, Bjerg A, Andersson M, Backman H, Perzanowski MS, Rönmark E. Early-life risk factors for development of asthma from 8 to 28 years of age: a prospective cohort study. ERJ Open Res 2022; 8:00074-2022. [PMID: 36655222 PMCID: PMC9835990 DOI: 10.1183/23120541.00074-2022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 06/16/2022] [Indexed: 01/21/2023] Open
Abstract
Background The objective was to estimate the incidence rate of asthma from age 8 to 28 years and evaluate early-life risk factors for asthma onset at different ages. Methods In 1996, within the Obstructive Lung Disease in Northern Sweden (OLIN) studies, a cohort of 3430 schoolchildren (97% of invited) was recruited at age 8 years to a prospective study about asthma. The cohort was followed annually from age 8 to 19 years and at 28 years by questionnaire surveys (67% of the original cohort participated). Asthma was categorised as never-asthma, onset age ≤8 years, onset age 9-13 years, onset age 14-19 years or onset age >19 years. Results Of the 3430 individuals in the cohort, 690 (20.1%) reported asthma in any survey. The average incidence rate was 10.0/1000 per year at ≤8 years, 11.9/1000 per year at 9-13 years, 13.3/1000 per year at 14-19 years and 6.1/1000 per year at >19 years. The incidence was higher among boys until age 10 years, but from age 15 years, it became higher among girls. Family history of asthma, allergic sensitisation and breastfeeding <3 months were associated with asthma onset throughout the study. Low birthweight, maternal smoking during pregnancy, severe respiratory infection, rhinoconjunctivitis and eczema were associated with asthma onset ≤8 and 9-13 years. Conclusions The incidence of asthma was high during childhood and the teenage period, and decreased substantially during young adulthood. Early-life factors were associated with asthma onset throughout childhood but had also a lasting effect on asthma incidence until adulthood.
Collapse
Affiliation(s)
- Linnéa Hedman
- Dept of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden,These authors contributed equally to first authorship
| | - Linnéa Almqvist
- Dept of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden,These authors contributed equally to first authorship
| | | | - Martin Andersson
- Dept of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Helena Backman
- Dept of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Matthew S. Perzanowski
- Dept of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Eva Rönmark
- Dept of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| |
Collapse
|
7
|
Luskin K, Mortazavi D, Bai-Tong S, Bertrand K, Chambers C, Schulkers-Escalante K, Ahmad A, Luedtke S, O'Donoghue AJ, Ghassemian M, Geng B, Leibel SL, Leibel SA. Allergen Content and Protease Activity in Milk Feeds from Mothers of Preterm Infants. Breastfeed Med 2022; 17:947-957. [PMID: 36251466 PMCID: PMC10081709 DOI: 10.1089/bfm.2022.0115] [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: 11/16/2022]
Abstract
Rationale: There is little information regarding the allergen content of milk feeds in the preterm population. Previous studies have not performed a broad analysis of the allergenic peptide content and protease activity of milk feeds in this population. Methods: To evaluate feasibility, we initially performed mass spectrometry on 4 human milk (HM) samples (2 term and 2 preterm) from the Mommy's Milk Human Milk Biorepository (HMB) and analyzed the results against the University of Nebraska FASTA database and UniProt for a total of 2,211 protein sequences. We then further analyzed five samples from the Microbiome, Atopy, and Prematurity (MAP) study including peptidomic and protease activity analysis. Results: Each HMB sample had between 806 and 1,007 proteins, with 37-44 nonhuman proteins/sample encompassing 26 plant and animal species. In the preterm MAP samples, 784 digested nonhuman proteins were identified, 30 were nonbovine in origin. Proteins from 23 different species including aeroallergens, food, and contact allergens were identified. Protease activity was highest in HM samples without human milk fortifier and lowest in preterm formula. Conclusions: These findings represent the first preterm milk feed mass spectrometry and protease analysis with identification of known allergenic proteins to food, contact, and aeroallergens. These results raise questions of whether the composition of milk feeds in the neonatal intensive care unit impact the development of atopic disease in the preterm population and whether the complex interaction between allergens, proteases, and other HM components can serve to induce sensitization or tolerance to allergens in infants. Clinical Trial Registration Number: NCT04835935.
Collapse
Affiliation(s)
| | - Diba Mortazavi
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Sherry Bai-Tong
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Kerri Bertrand
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Christina Chambers
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | | | - Alla Ahmad
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Stephanie Luedtke
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Anthony J. O'Donoghue
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Majid Ghassemian
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Bob Geng
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Sandra L. Leibel
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Sydney A. Leibel
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| |
Collapse
|
8
|
Dekker PM, Azad MB, Boeren S, Mandhane PJ, Moraes TJ, Simons E, Subbarao P, Turvey SE, Saccenti E, Hettinga KA. The human milk proteome and allergy of mother and child: Exploring associations with protein abundances and protein network connectivity. Front Immunol 2022; 13:977470. [PMID: 36311719 PMCID: PMC9613325 DOI: 10.3389/fimmu.2022.977470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
Background The human milk proteome comprises a vast number of proteins with immunomodulatory functions, but it is not clear how this relates to allergy of the mother or allergy development in the breastfed infant. This study aimed to explore the relation between the human milk proteome and allergy of both mother and child. Methods Proteins were analyzed in milk samples from a subset of 300 mother-child dyads from the Canadian CHILD Cohort Study, selected based on maternal and child allergy phenotypes. For this selection, the definition of "allergy" included food allergy, eczema, allergic rhinitis, and asthma. Proteins were analyzed with non-targeted shotgun proteomics using filter-aided sample preparation (FASP) and nanoLC-Orbitrap-MS/MS. Protein abundances, based on label-free quantification, were compared using multiple statistical approaches, including univariate, multivariate, and network analyses. Results Using univariate analysis, we observed a trend that milk for infants who develop an allergy by 3 years of age contains higher abundances of immunoglobulin chains, irrespective of the allergy status of the mother. This observation suggests a difference in the milk's immunological potential, which might be related to the development of the infant's immune system. Furthermore, network analysis showed overall increased connectivity of proteins in the milk of allergic mothers and milk for infants who ultimately develop an allergy. This difference in connectivity was especially noted for proteins involved in the protein translation machinery and may be due to the physiological status of the mother, which is reflected in the interconnectedness of proteins in her milk. In addition, it was shown that network analysis complements the other methods for data analysis by revealing complex associations between the milk proteome and mother-child allergy status. Conclusion Together, these findings give new insights into how the human milk proteome, through differences in the abundance of individual proteins and protein-protein associations, relates to the allergy status of mother and child. In addition, these results inspire new research directions into the complex interplay of the mother-milk-infant triad and allergy.
Collapse
Affiliation(s)
- Pieter M. Dekker
- Food Quality and Design Group, Wageningen University and Research, Wageningen, Netherlands
- Laboratory of Biochemistry, Wageningen University and Research, Wageningen, Netherlands
| | - Meghan B. Azad
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
- Manitoba Interdisciplinary Lactation Centre (MILC), Children’s Hospital Research Institute of Manitoba, Winnipeg, MB, Canada
| | - Sjef Boeren
- Laboratory of Biochemistry, Wageningen University and Research, Wageningen, Netherlands
| | | | - Theo J. Moraes
- Division of Respiratory Medicine, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Elinor Simons
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
- Manitoba Interdisciplinary Lactation Centre (MILC), Children’s Hospital Research Institute of Manitoba, Winnipeg, MB, Canada
| | - Padmaja Subbarao
- Division of Respiratory Medicine, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Stuart E. Turvey
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Edoardo Saccenti
- Laboratory of Systems and Synthetic Biology, Wageningen University and Research, Wageningen, Netherlands
| | - Kasper A. Hettinga
- Food Quality and Design Group, Wageningen University and Research, Wageningen, Netherlands
| |
Collapse
|
9
|
Zhang H, Zhang Z, Liao Y, Zhang W, Tang D. The Complex Link and Disease Between the Gut Microbiome and the Immune System in Infants. Front Cell Infect Microbiol 2022; 12:924119. [PMID: 35782111 PMCID: PMC9241338 DOI: 10.3389/fcimb.2022.924119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
The human gut microbiome is important for human health. The development of stable microbial communities in the gastrointestinal tract is closely related to the early growth and development of host immunity. After the birth of a baby, immune cells and the gut microbiome mature in parallel to adapt to the complex gut environment. The gut microbiome is closely linked to the immune system and influences each other. This interaction is associated with various diseases in infants and young children, such as asthma, food allergies, necrotizing colitis, obesity, and inflammatory bowel disease. Thus, the composition of the infant gut microbiome can predict the risk of disease development and progression. At the same time, the composition of the infant gut microbiome can be regulated in many ways and can be used to prevent and treat disease in infants by modulating the composition of the infant gut microbiome. The most important impacts on infant gut microbiota are maternal, including food delivery and feeding. The differences in the gut microbiota of infants reflect the maternal gut microbiota, which in turn reflects the gut microbiota of a given population, which is clinically significant.
Collapse
Affiliation(s)
- Huan Zhang
- Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Zhilin Zhang
- Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Yiqun Liao
- Department of General Surgery, Institute of General Surgery, Clinical Medical College, Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Wenjie Zhang
- Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Dong Tang
- Department of General Surgery, Institute of General Surgery, Clinical Medical College, Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| |
Collapse
|
10
|
Allergic diseases in infancy: I - Epidemiology and current interpretation. World Allergy Organ J 2021; 14:100591. [PMID: 34820047 PMCID: PMC8593659 DOI: 10.1016/j.waojou.2021.100591] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 08/30/2021] [Accepted: 09/08/2021] [Indexed: 12/19/2022] Open
Abstract
Objective Among non-communicable diseases, the prevalence of allergic diseases has increased significantly in the new millennium. The increase of allergic diseases is linked to the changing environment of infants. Methods This narrative review summarizes the discussions and conclusions from the 8th Human Milk Workshop. Information from the fields of pediatrics, epidemiology, biology, microbiology, and immunology are summarized to establish a framework describing potential avenues for the prevention of allergic diseases in the future. Results Several environmental circumstances are linked to the development of allergic diseases. While cesarean section is increasing the risk of allergies, early childhood exposure to a farm environment has a protective effect. From their analysis, nutritive and non-nutritive factors influencing the allergy risk in later life have been identified. The effect of breastfeeding on food allergy development is non-univocal. Human milk components including immunoglobulins, cytokines, and prebiotics have been indicated as important for allergy prevention. Conclusion Many factors linked to the western lifestyle have been associated with the development of allergic diseases. This suggests several theories that may serve as a basis for new protective interventions. While it is indubitable that mother's milk protects from infectious diseases, its role in the prevention of allergic diseases is to be elucidated.
Collapse
|
11
|
Childs CE, Munblit D, Ulfman L, Gómez-Gallego C, Lehtoranta L, Recker T, Salminen S, Tiemessen M, Collado MC. Potential Biomarkers, Risk Factors and their Associations with IgE-mediated Food Allergy in Early Life: A Narrative Review. Adv Nutr 2021; 13:S2161-8313(22)00081-3. [PMID: 34596662 PMCID: PMC8970818 DOI: 10.1093/advances/nmab122] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Food allergy affects the quality of life of millions of people worldwide and presents a significant psychological and financial burden for both national and international public health. In the past few decades, the prevalence of allergic disease has been on the rise worldwide. Identified risk factors for food allergy include family history, mode of delivery, variations in infant feeding practices, prior diagnosis of other atopic diseases such as eczema, and social economic status. Identifying reliable biomarkers which predict the risk of developing food allergy in early life would be valuable in both preventing morbidity and mortality and by making current interventions available at the earliest opportunity. There is also the potential to identify new therapeutic targets. This narrative review provides details on the genetic, epigenetic, dietary and microbiome influences upon the development of food allergy and synthesizes the currently available data indicating potential biomarkers. While there is a large body of research evidence available within each field of potential risk factors, there are very limited number of studies which span multiple methodological fields, for example including immunology, microbiome, genetic/epigenetic factors and dietary assessment. We recommend that further collaborative research with detailed cohort phenotyping is required to identify biomarkers, and whether these vary between at-risk populations and the wider population. The low incidence of oral food challenge confirmed food allergy in the general population, and the complexities of designing nutritional intervention studies will provide challenges for researchers to address in generating high quality, reliable and reproducible research findings. STATEMENT OF SIGNIFICANCE Food allergy affects the quality of life of millions of people worldwide and presents a significant psychological and financial burden for both national and international public health. Identifying reliable biomarkers which predict the risk of developing food allergy would be valuable in both preventing morbidity and mortality and by making current interventions available at the earliest opportunity. This review provides details on the genetic, epigenetic, dietary and microbiome influences upon the development of food allergy. This helps in identifying reliable biomarkers to predict the risk of developing food allergy, which could be valuable in both preventing morbidity and mortality and by making interventions available at the earliest opportunity.
Collapse
Affiliation(s)
- Caroline E Childs
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom,Institute for Life Sciences, University of Southampton, Southampton, United Kingdom
| | - Daniel Munblit
- Imperial College London, London, United Kingdom,Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child’s Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia,Inflammation, Repair and Development Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | | | - Carlos Gómez-Gallego
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | | | | | | | | | | |
Collapse
|
12
|
The role of husband in supporting exclusive breastfeeding among teenage mothers in Boyolali, Indonesia. ENFERMERIA CLINICA 2021. [PMID: 33849171 DOI: 10.1016/j.enfcli.2020.12.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study aims to analyze the role of husbands of teenage mothers in exclusive breastfeeding practice in Boyolali Regency. Respondents in this study were husbands of teenage mothers with total of 233 participants. Research data were analyzed using logistic regression tests. The results of the Multiple Linear Regression analysis show that the husband's income variable in the study was the dominant factor associated with exclusive breastfeeding for teenage mothers. Factors of husband's income (AOR=3.263, 95% CI: 1.819-5.851), husband's knowledge (AOR=2.334, 95% CI: 1.307-4.167), and husband's support (p=<0.001, 95% CI: 1.669-5.383) were associated with exclusive breastfeeding to teenage mothers in Boyolali Regency. Husband's age, education, occupation, and attitude did not show a relationship with exclusive breastfeeding practices. Future studies are suggested to examine the role of other parties than husbands (biological mother/mother-in-law and health workers) in exclusive breastfeeding practice in teenage mothers.
Collapse
|
13
|
Gordon LK, Mason KA, Mepham E, Sharkey KM. A mixed methods study of perinatal sleep and breastfeeding outcomes in women at risk for postpartum depression. Sleep Health 2021; 7:353-361. [PMID: 33640360 PMCID: PMC9665349 DOI: 10.1016/j.sleh.2021.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 01/05/2021] [Accepted: 01/12/2021] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Pregnant and postpartum women experience significant sleep disruption, but the role of perinatal sleep disturbances in breastfeeding is understudied. METHODS In this observational cohort study, we used mixed methods to examine associations between perinatal sleep and breastfeeding. Forty-eight women (mean age 28.2 ± 4.9 years) who were euthymic at enrollment but had a history of major depression (n = 43) or bipolar disorder (n = 5) had sleep recorded with wrist actigraphy. We determined feeding status through daily diaries and used semi-structured interviews to identify themes regarding participants' experiences, breastfeeding decisions, and behaviors. To examine whether sleep disturbance during pregnancy predicted breastfeeding (BF) rates, we defined "lower sleep efficiency" (LSE) and "higher sleep efficiency" (HSE) groups based on the median split of actigraphic SE at 33 weeks' gestation (cutoff SE = 84.9%) and classified mothers as No-BF, Mixed-BF (BF + formula), and Exclusive-BF at 2 weeks postpartum. RESULTS Percentages of women who did any breastfeeding were: Week 2 = 72.3%, Week 6 = 62.5%, Week 16 = 50%. LSE mothers were less likely than HSE mothers to initiate breastfeeding (percent No-BF: LSE = 45.8%, HSE = 16.7%, P < .05). Average actigraphic sleep onset, sleep offset, time in bed, sleep duration, and SE did not differ based on breastfeeding status at any time point. Qualitative themes included insufficient preparation for the demands of breastfeeding, interrupted and nonrestorative sleep, and unrelenting daytime tiredness. CONCLUSIONS In our sample, preserved actigraphic SE during pregnancy was associated with initiation and continuation of breastfeeding. Future work should examine whether improving sleep in pregnancy improves mothers' feeding experiences.
Collapse
Affiliation(s)
- Lily K Gordon
- The Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA; Sleep for Science Research Laboratory, Providence, Rhode Island, USA
| | - Katherine A Mason
- Department of Anthropology, Brown University, Providence, Rhode Island, USA
| | - Emily Mepham
- Sleep for Science Research Laboratory, Providence, Rhode Island, USA
| | - Katherine M Sharkey
- The Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA; Sleep for Science Research Laboratory, Providence, Rhode Island, USA; Rhode Island Hospital, Divison of Pulmonary, Critical Care, and Sleep Medicine, Providence, Rhode Island, USA.
| |
Collapse
|
14
|
Llorente-Pulido S, Custodio E, López-Giménez MR, Sanz-Barbero B, Otero-García L. Barriers and Facilitators for Exclusive Breastfeeding in Women's Biopsychosocial Spheres According to Primary Care Midwives in Tenerife (Canary Islands, Spain). INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:3819. [PMID: 33917424 PMCID: PMC8038662 DOI: 10.3390/ijerph18073819] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 11/17/2022]
Abstract
(1) The objective of our study is to determine, from a primary care midwife's perspective, which biopsychosocial factors can favour or be detrimental to exclusive breast feeding. (2) The study was carried out in Tenerife (Canary Islands, Spain) and is based on qualitative methodology. Twenty in-depth interviews were carried out with midwives working in primary care centres in Tenerife, using a content analysis approach. The transcript data was then encoded following an inductive approach. (3) According to the perceptions of the primary care midwives who were interviewed, the barriers and facilitators that influence exclusive breastfeeding related to the biopsychosocial spheres of women are, at an individual level, the physical and emotional aspects during the postnatal period; at the relationship level, the presence or not of support from the close family and partner; at the community level, the environment and social networks the new mothers may have; and at the work level, characteristics of jobs and early return to work. (4) The findings of our research can help healthcare professionals to approach the promotion and encouragement of exclusive breast feeding at each of the levels studied, with the aim of increasing rates following recommendations issued by The World Health Organization.
Collapse
Affiliation(s)
- Seila Llorente-Pulido
- Servicio Canario de Salud. Gerencia de Atención Primaria de Tenerife, Primary Health Care San Isidro, 38611 Tenerife (Canary Islands), Spain
| | - Estefanía Custodio
- Joint Research Centre European Commission, 21027 Ispra, Italy;
- National Centre for Tropical Medicine, Health Institute Carlos III, 28029 Madrid, Spain
| | - Maria Rosario López-Giménez
- Preventive Medicine and Public Health and Microbiology Department, Universidad Autónoma of Madrid, 28029 Madrid, Spain;
| | - Belén Sanz-Barbero
- National School of Public Health. Health Institute Carlos III, 28029 Madrid, Spain;
- CIBER Epidemiology and Public Health (CIBERESP-ISCIII), 28029 Madrid, Spain
| | - Laura Otero-García
- CIBER Epidemiology and Public Health (CIBERESP-ISCIII), 28029 Madrid, Spain
- Nursing Department, Faculty of Medicine, Universidad Autónoma of Madrid, 28029 Madrid, Spain
| |
Collapse
|
15
|
Liu F, Yan J, Wang X, Wang C, Chen L, Li Y, Chen J, Guo H. Maternal Fucosyltransferase 2 Status Associates with the Profiles of Human Milk Oligosaccharides and the Fecal Microbiota Composition of Breastfed Infants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3032-3043. [PMID: 33677972 DOI: 10.1021/acs.jafc.0c04575] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Human milk oligosaccharides (HMOs) play key roles in shaping infant fecal microbiota, and HMOs profiles have been reported to vary according to the mother's glycosyltransferase phenotype. In this study, the profiles of HMOs in human milk from secretor or non-secretor mothers collected at 2 months postpartum were analyzed by liquid chromatography quadrupole time-of-flight tandem mass spectrometry. 16S rRNA sequencing was used to characterize the fecal microbiota of breastfed infants. The amount of total and fucosylated HMOs were higher in secretor than non-secretor mothers, while Bifidobacterium genus were highly enriched in infants fed by non-secretor mothers. Associations between HMOs and infant fecal microbiota showed that the relative abundance of Bifidobacterium-OTU158 was positively associated with 2'-fucosyllactose and 3-fucosyllactose, and Bifidobacterium-OTU90 was negatively associated with lacto-N-difucohexaose. The present study provides the HMO profiles from Chinese mothers and their associations with infant fecal microbiota composition, suggesting that HMO compositions are associated with different Bifidobacterium strains in species-specific manner.
Collapse
Affiliation(s)
- Fan Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jingyu Yan
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116011, China
| | - Xifan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Chenyuan Wang
- Key Laboratory of Functional Dairy, China Agricultural University, Beijing 100083, China
| | - Lingli Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yiran Li
- Key Laboratory of Functional Dairy, China Agricultural University, Beijing 100083, China
| | - Jianliang Chen
- Key Laboratory of Functional Dairy, China Agricultural University, Beijing 100083, China
| | - Huiyuan Guo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Functional Dairy, China Agricultural University, Beijing 100083, China
| |
Collapse
|
16
|
Wang G, Hallberg J, Um Bergström P, Janson C, Pershagen G, Gruzieva O, van Hage M, Georgelis A, Bergström A, Kull I, Lindén A, Melén E. Assessment of chronic bronchitis and risk factors in young adults: results from BAMSE. Eur Respir J 2021; 57:13993003.02120-2020. [PMID: 33184115 PMCID: PMC7930470 DOI: 10.1183/13993003.02120-2020] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/11/2020] [Indexed: 02/05/2023]
Abstract
Background Chronic bronchitis is associated with substantial morbidity among elderly adults, but little is known about its prevalence and risk factors in young adults. Our aim was to assess the prevalence and early-life risk factors for chronic bronchitis in young adults. Methods Questionnaire data and clinical measures from the 24-year follow-up of the Swedish BAMSE (Child (Barn), Allergy, Milieu, Stockholm, Epidemiological) cohort were used. We assessed chronic bronchitis (CB) as the combination of cough and mucus production in the morning during winter. Environmental and clinical data from birth and onwards were used for analyses of risk factors. Results At the 24-year follow-up, 75% (n=3064) participants completed the questionnaire and 2030 performed spirometry. The overall prevalence of CB was 5.5% (n=158) with similar estimates in males and females. 49% of CB cases experienced more than three self-reported respiratory infections in the past year compared to 18% in non-CB subjects (p<0.001), and 37% of cases were current smokers (versus 19% of non-CB cases). Statistically significant lower post-bronchodilator forced expiratory volume in 1 s/forced vital capacity were observed in CB compared to non-CB subjects (mean z-score −0.06 versus 0.13, p=0.027). Daily smoking (adjusted (a)OR 3.85, p<0.001), air pollution exposure (black carbon at ages 1–4 years aOR 1.71 per 1 μg·m−3 increase, p=0.009) and exclusive breastfeeding for ≤4 months (aOR 0.66, p=0.044) were associated with CB. Conclusion Chronic bronchitis in young adults is associated with recurrent respiratory infections. Besides smoking, our results support the role of early-life exposures, such as air pollution and exclusive breastfeeding, for respiratory health later in life. Chronic bronchitis in young adults is strongly associated with recurrent respiratory infections. Besides smoking, our results support the role of early-life environmental exposures for respiratory health in this age group.https://bit.ly/2RNsv5z
Collapse
Affiliation(s)
- Gang Wang
- Dept of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Sichuan, China.,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Jenny Hallberg
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Petra Um Bergström
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Christer Janson
- Dept of Medical Sciences: Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Marianne van Hage
- Division of Immunology and Allergy, Dept of Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Antonios Georgelis
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Inger Kull
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Anders Lindén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Dept of Respiratory Medicine and Allergy, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden .,Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| |
Collapse
|
17
|
Agusti A, Breyer-Kohansal R, Faner R. Transitioning from infancy to adulthood: a black box full of opportunities. Eur Respir J 2021; 57:57/3/2003997. [PMID: 33664098 DOI: 10.1183/13993003.03997-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 11/02/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Alvar Agusti
- Respiratory Institute, Hospital Clinic, University of Barcelona, Barcelona, Spain .,Institut d'Investigacions BIomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain.,CIBER Enfermedades Respiratorias, Instituto Carlos III, Barcelona, Spain
| | - Robab Breyer-Kohansal
- Dept for Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria.,Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
| | - Rosa Faner
- Institut d'Investigacions BIomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain.,CIBER Enfermedades Respiratorias, Instituto Carlos III, Barcelona, Spain
| |
Collapse
|
18
|
Acevedo N, Alashkar Alhamwe B, Caraballo L, Ding M, Ferrante A, Garn H, Garssen J, Hii CS, Irvine J, Llinás-Caballero K, López JF, Miethe S, Perveen K, Pogge von Strandmann E, Sokolowska M, Potaczek DP, van Esch BCAM. Perinatal and Early-Life Nutrition, Epigenetics, and Allergy. Nutrients 2021; 13:724. [PMID: 33668787 PMCID: PMC7996340 DOI: 10.3390/nu13030724] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/08/2021] [Accepted: 02/12/2021] [Indexed: 02/08/2023] Open
Abstract
Epidemiological studies have shown a dramatic increase in the incidence and the prevalence of allergic diseases over the last several decades. Environmental triggers including risk factors (e.g., pollution), the loss of rural living conditions (e.g., farming conditions), and nutritional status (e.g., maternal, breastfeeding) are considered major contributors to this increase. The influences of these environmental factors are thought to be mediated by epigenetic mechanisms which are heritable, reversible, and biologically relevant biochemical modifications of the chromatin carrying the genetic information without changing the nucleotide sequence of the genome. An important feature characterizing epigenetically-mediated processes is the existence of a time frame where the induced effects are the strongest and therefore most crucial. This period between conception, pregnancy, and the first years of life (e.g., first 1000 days) is considered the optimal time for environmental factors, such as nutrition, to exert their beneficial epigenetic effects. In the current review, we discussed the impact of the exposure to bacteria, viruses, parasites, fungal components, microbiome metabolites, and specific nutritional components (e.g., polyunsaturated fatty acids (PUFA), vitamins, plant- and animal-derived microRNAs, breast milk) on the epigenetic patterns related to allergic manifestations. We gave insight into the epigenetic signature of bioactive milk components and the effects of specific nutrition on neonatal T cell development. Several lines of evidence suggest that atypical metabolic reprogramming induced by extrinsic factors such as allergens, viruses, pollutants, diet, or microbiome might drive cellular metabolic dysfunctions and defective immune responses in allergic disease. Therefore, we described the current knowledge on the relationship between immunometabolism and allergy mediated by epigenetic mechanisms. The knowledge as presented will give insight into epigenetic changes and the potential of maternal and post-natal nutrition on the development of allergic disease.
Collapse
Affiliation(s)
- Nathalie Acevedo
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Bilal Alashkar Alhamwe
- Institute of Tumor Immunology, Clinic for Hematology, Oncology and Immunology, Center for Tumor Biology and Immunology, Philipps University Marburg, 35043 Marburg, Germany; (B.A.A.); (E.P.v.S.)
- College of Pharmacy, International University for Science and Technology (IUST), Daraa 15, Syria
| | - Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Mei Ding
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, 7265 Davos, Switzerland; (M.D.); (M.S.)
- Christine Kühne-Center for Allergy Research and Education, 7265 Davos, Switzerland
- Department of Allergology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
- School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
| | - Holger Garn
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center, 35043 Marburg, Germany; (H.G.); (S.M.)
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands;
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
| | - Charles S. Hii
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - James Irvine
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - Kevin Llinás-Caballero
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Juan Felipe López
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Sarah Miethe
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center, 35043 Marburg, Germany; (H.G.); (S.M.)
| | - Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - Elke Pogge von Strandmann
- Institute of Tumor Immunology, Clinic for Hematology, Oncology and Immunology, Center for Tumor Biology and Immunology, Philipps University Marburg, 35043 Marburg, Germany; (B.A.A.); (E.P.v.S.)
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, 7265 Davos, Switzerland; (M.D.); (M.S.)
- Christine Kühne-Center for Allergy Research and Education, 7265 Davos, Switzerland
| | - Daniel P. Potaczek
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center, 35043 Marburg, Germany; (H.G.); (S.M.)
| | - Betty C. A. M. van Esch
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands;
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
| |
Collapse
|
19
|
Jain T, Sharma P, Are AC, Vickers SM, Dudeja V. New Insights Into the Cancer-Microbiome-Immune Axis: Decrypting a Decade of Discoveries. Front Immunol 2021; 12:622064. [PMID: 33708214 PMCID: PMC7940198 DOI: 10.3389/fimmu.2021.622064] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/11/2021] [Indexed: 12/13/2022] Open
Abstract
The past decade has witnessed groundbreaking advances in the field of microbiome research. An area where immense implications of the microbiome have been demonstrated is tumor biology. The microbiome affects tumor initiation and progression through direct effects on the tumor cells and indirectly through manipulation of the immune system. It can also determine response to cancer therapies and predict disease progression and survival. Modulation of the microbiome can be harnessed to potentiate the efficacy of immunotherapies and decrease their toxicity. In this review, we comprehensively dissect recent evidence regarding the interaction of the microbiome and anti-tumor immune machinery and outline the critical questions which need to be addressed as we further explore this dynamic colloquy.
Collapse
Affiliation(s)
| | | | | | - Selwyn M. Vickers
- Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Vikas Dudeja
- Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| |
Collapse
|
20
|
|
21
|
van Tilburg Bernardes E, Gutierrez MW, Arrieta MC. The Fungal Microbiome and Asthma. Front Cell Infect Microbiol 2020; 10:583418. [PMID: 33324573 PMCID: PMC7726317 DOI: 10.3389/fcimb.2020.583418] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/29/2020] [Indexed: 12/14/2022] Open
Abstract
Asthma is a group of inflammatory conditions that compromises the airways of a continuously increasing number of people around the globe. Its complex etiology comprises both genetic and environmental aspects, with the intestinal and lung microbiomes emerging as newly implicated factors that can drive and aggravate asthma. Longitudinal infant cohort studies combined with mechanistic studies in animal models have identified microbial signatures causally associated with subsequent asthma risk. The recent inclusion of fungi in human microbiome surveys has revealed that microbiome signatures associated with asthma risk are not limited to bacteria, and that fungi are also implicated in asthma development in susceptible individuals. In this review, we examine the unique properties of human-associated and environmental fungi, which confer them the ability to influence immune development and allergic responses. The important contribution of fungi to asthma development and exacerbations prompts for their inclusion in current and future asthma studies in humans and animal models.
Collapse
Affiliation(s)
- Erik van Tilburg Bernardes
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada.,Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Mackenzie W Gutierrez
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada.,Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Marie-Claire Arrieta
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada.,Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| |
Collapse
|
22
|
The Interplay Between Eczema and Breastfeeding Practices May Hide Breastfeeding's Protective Effect on Childhood Asthma. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2020; 9:862-871.e5. [PMID: 32949808 DOI: 10.1016/j.jaip.2020.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 08/27/2020] [Accepted: 09/04/2020] [Indexed: 01/24/2023]
Abstract
BACKGROUND Longer duration of breastfeeding may be protective against asthma. However, early manifestations of allergic disease, such as eczema, are risk factors for asthma and can influence the duration of breastfeeding, and hence, may bias observable associations. OBJECTIVE To examine the relationship between breastfeeding ever and duration and the development of asthma and allergic asthma phenotypes, stratified by a diagnosis of eczema during or after the breastfeeding period. METHODS A total of 3663 children participated in the 6-year-old follow-up of the HealthNuts study, a population-based, longitudinal study of allergic diseases in Australia. At age 1 year, breastfeeding and eczema data were collected and at age 6 years, information on wheeze, medication use, and parental report of doctor-diagnosed asthma were obtained, both via questionnaire. Skin prick test responses to food and aeroallergens at age 6 years further distinguished asthmatic children into allergic and nonallergic phenotypes. RESULTS Breastfeeding initiation was not associated with current asthma at age 6 years (adjusted odds ratio, 0.76; 95% CI, 0.45-1.29) when compared with never breastfeeding. Results were similar for length of exclusiveness and overall duration of breastfeeding, and allergic and nonallergic asthma phenotypes. However, increased duration of breastfeeding among children without eczema in infancy was associated with reduced odds of asthma (per month increase, adjusted odds ratio, 0.98; 95% CI, 0.95-1.0; P = .05), which equates to 0.86 (95% CI, 0.74-1.0) reduced odds of asthma for a 6-month increase in breastfeeding. This association was not apparent in children who were diagnosed with eczema during breastfeeding (adjusted odds ratio, 1.03; 95% CI, 0.98-1.08; P = .3). CONCLUSIONS Longer duration of breastfeeding was associated with a reduced odds of asthma among children without eczema in the first year of life; this association was masked before stratification by eczema in infancy. Future studies examining breastfeeding practices and the risk of allergic outcomes in later childhood need to consider the presence of early-life allergic manifestations impacting on breastfeeding behavior.
Collapse
|
23
|
Wallas AE, Eriksson C, Ögren M, Pyko A, Sjöström M, Melén E, Pershagen G, Gruzieva O. Noise exposure and childhood asthma up to adolescence. ENVIRONMENTAL RESEARCH 2020; 185:109404. [PMID: 32247905 DOI: 10.1016/j.envres.2020.109404] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 02/13/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE Increasing evidence indicates aggravation of immune-mediated diseases due to physiological and psychological stress. Noise is a stressor, however, little is known about its effects on children's respiratory health. This study investigates the association between pre- or postnatal road traffic or occupational noise exposure and asthma as well as related symptoms from infancy to adolescence. METHODS The study was conducted in the Swedish birth cohort BAMSE, including over 4000 participants followed with repeated questionnaires and clinical tests until 16 years of age. Pre- and postnatal residential road traffic noise was assessed by estimating time-weighted average noise levels at the most exposed façade. Maternal occupational noise exposure during pregnancy was evaluated using a job-exposure-matrix. The associations between noise exposure and asthma-related outcomes were explored using logistic regression and generalised estimating equations. RESULTS We observed non-significant associations for asthma ever up to 16 years with residential road traffic noise exposure in infancy ≥55 dBLden (adjusted OR = 1.22; 95% CI 0.90-1.65), as well as prenatal occupational noise exposure ≥80 dBLAeq,8h (1.18, 0.85-1.62). In longitudinal analyses, however, no clear associations between pre- or postnatal exposure to residential road traffic noise, or average exposure to noise since birth, were detected in relation to asthma or wheeze until 16 years. CONCLUSION We did not find a clear overall association between exposure to noise during different time periods and asthma or wheeze up to adolescence.
Collapse
Affiliation(s)
| | - Charlotta Eriksson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Mikael Ögren
- Department of Occupational and Environmental Medicine, Sahlgrenska Academy, The University of Gothenburg, Gothenburg, Sweden
| | - Andrei Pyko
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Mattias Sjöström
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| |
Collapse
|
24
|
Gorlanova O, Appenzeller R, Mahmoud YS, Ramsey KA, Usemann J, Decrue F, Kuehni CE, Röösli M, Latzin P, Fuchs O, Soti A, Frey U, On Behalf Of The Bild Study Group. Effect of breastfeeding duration on lung function, respiratory symptoms and allergic diseases in school-age children. Pediatr Pulmonol 2020; 55:1448-1455. [PMID: 32181595 DOI: 10.1002/ppul.24733] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/06/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND A positive effect of breastfeeding on lung function has been demonstrated in cohorts of children with asthma or risk for asthma. We assessed the impact of breastfeeding on lung function and symptoms at the age of 6 years in an unselected, healthy birth cohort. METHODS We prospectively studied healthy term infants from the Bern-Basel Infant Lung Development (BILD) cohort from birth up to 6 years. Any breastfeeding was assessed by weekly phone calls during the first year of life. Risk factors (eg, smoking exposure, parental history of allergic conditions, and education) were obtained using standardized questionnaires. The primary outcomes were lung function parameters measured at 6 years of age by spirometry forced expiratory volume in 1 second, body plethysmography (functional residual capacity [FRCpleth ], the total lung capacity [TLCpleth ], and the effective respiratory airway resistance [Reff ]) and fractional exhaled nitric oxide (FeNO). Secondary outcomes included ever wheeze (between birth and 6 years), wheeze in the past 12 months, asthma, presence of allergic conditions, atopic dermatitis, rhinitis, and positive skin prick test at the age of 6 years. RESULTS In 377 children the mean breastfeeding duration was 36 weeks (SD 14.4). We found no association of breastfeeding duration with obstructive or restrictive lung function and FeNO. After adjustment for confounders, we found no associations of breastfeeding duration with respiratory symptoms or the presence of allergic conditions. CONCLUSION This study found no evidence of an association between breastfeeding and comprehensive lung function in unselected healthy children with long-term breastfeeding. Our findings do not support the hypothesis that the duration of breastfeeding has a direct impact on lung function in a healthy population with low asthmatic risk.
Collapse
Affiliation(s)
- Olga Gorlanova
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Rhea Appenzeller
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Yasmin S Mahmoud
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Kathryn A Ramsey
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jakob Usemann
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Division of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
| | - Fabienne Decrue
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Claudia E Kuehni
- Institute for Social and Preventive Medicine, Pediatric Respiratory Epidemiology Group, University of Bern, Bern, Switzerland
| | - Martin Röösli
- Swiss Tropical and Public Health Institute Basel, Environmental Exposures and Health Unit, Basel, Switzerland
| | - Philipp Latzin
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Oliver Fuchs
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Andras Soti
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Urs Frey
- Pediatric Pulmonology, University Children's Hospital (UKBB), University of Basel, Basel, Switzerland
- Division of Respiratory Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | |
Collapse
|
25
|
van Sadelhoff JHJ, Wiertsema SP, Garssen J, Hogenkamp A. Free Amino Acids in Human Milk: A Potential Role for Glutamine and Glutamate in the Protection Against Neonatal Allergies and Infections. Front Immunol 2020; 11:1007. [PMID: 32547547 PMCID: PMC7270293 DOI: 10.3389/fimmu.2020.01007] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/28/2020] [Indexed: 12/12/2022] Open
Abstract
Breastfeeding is indicated to support neonatal immune development and to protect against neonatal infections and allergies. Human milk composition is widely studied in relation to these unique abilities, which has led to the identification of various immunomodulating components in human milk, including various bioactive proteins. In addition to proteins, human milk contains free amino acids (FAAs), which have not been well-studied. Of those, the FAAs glutamate and glutamine are by far the most abundant. Levels of these FAAs in human milk sharply increase during the first months of lactation, in contrast to most other FAAs. These unique dynamics are globally consistent, suggesting that their levels in human milk are tightly regulated throughout lactation and, consequently, that they might have specific roles in the developing neonate. Interestingly, free glutamine and glutamate are reported to exhibit immunomodulating capacities, indicating that these FAAs could contribute to neonatal immune development and to the unique protective effects of breastfeeding. This review describes the current understanding of the FAA composition in human milk. Moreover, it provides an overview of the effects of free glutamine and glutamate on immune parameters relevant for allergic sensitization and infections in early life. The data reviewed provide rationale to study the role of free glutamine and glutamate in human milk in the protection against neonatal allergies and infections.
Collapse
Affiliation(s)
- Joris H J van Sadelhoff
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | | | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands.,Danone Nutricia Research, Utrecht, Netherlands
| | - Astrid Hogenkamp
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| |
Collapse
|
26
|
Melén E, Bergström A, Kull I, Almqvist C, Andersson N, Asarnoj A, Borres MP, Georgellis A, Pershagen G, Westman M, van Hage M, Ballardini N. Male sex is strongly associated with IgE-sensitization to airborne but not food allergens: results up to age 24 years from the BAMSE birth cohort. Clin Transl Allergy 2020; 10:15. [PMID: 32489587 PMCID: PMC7247167 DOI: 10.1186/s13601-020-00319-w] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 05/07/2020] [Indexed: 12/11/2022] Open
Abstract
Background Up to half of the population in high-income countries has allergen-specific IgE antibodies. However, data regarding sex differences of IgE-sensitization from childhood to adulthood is limited. Objective To explore IgE-sensitization to common foods and airborne allergens in relation to sex over time in a population-based cohort followed up to young adulthood. Methods The Swedish population-based birth cohort BAMSE includes 4089 subjects who have been followed regularly with questionnaires and clinical investigations. A recent 24-year follow-up included 3069 participants (75%). Sera collected at 4, 8, 16 and 24 years were analyzed for IgE-antibodies to 14 common foods and airborne allergens. Results At 24 years sensitization to foods had decreased compared to previous follow-ups affecting 8.4%, while sensitization to airborne allergens was more common, affecting 42.2%. Male sex was associated with IgE-sensitization to airborne allergens at all ages (overall OR: 1.68, 95% CI 1.46–1.94) while there was no statistically significant association between sex and sensitization to food allergens (overall OR: 1.10, 95% CI 0.93–1.32). Levels of allergen-specific IgE did not differ significantly between males and females for any of the tested foods or airborne allergens at any age, following adjustment for multiple comparisons. Conclusion IgE-sensitization to airborne allergens increases with age up to young adulthood, whereas sensitization to food allergens seems to level off. Male sex is strongly associated with IgE-sensitization to airborne allergens from early childhood up to young adulthood. In contrast, there is little evidence for associations between sex and IgE-sensitization to foods.
Collapse
Affiliation(s)
- Erik Melén
- Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, 11883 Stockholm, Sweden.,Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, 11883 Stockholm, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, 113 65 Stockholm, Sweden
| | - Inger Kull
- Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, 11883 Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, 11883 Stockholm, Sweden
| | - Catarina Almqvist
- Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, 171 76 Stockholm, Sweden.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 17 77 Stockholm, Sweden
| | - Niklas Andersson
- Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Anna Asarnoj
- Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, 171 76 Stockholm, Sweden.,Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.,Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Magnus P Borres
- Department of Women's and Children's Health, Uppsala University and Thermo Fisher Scientific, Uppsala, Sweden
| | - Antonis Georgellis
- Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, 113 65 Stockholm, Sweden
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, 113 65 Stockholm, Sweden
| | - Marit Westman
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Marianne van Hage
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Natalia Ballardini
- Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, 11883 Stockholm, Sweden.,Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, 11883 Stockholm, Sweden
| |
Collapse
|
27
|
Peldan P, Kukkonen A, Savilahti E, Kuitunen M. Perinatal Probiotic Mixture and Development of Allergic Sensitization up to 13 Years of Age. Int Arch Allergy Immunol 2020; 181:270-277. [DOI: 10.1159/000504915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 11/20/2019] [Indexed: 11/19/2022] Open
|
28
|
van Tilburg Bernardes E, Gutierrez MW, Arrieta MC. The Fungal Microbiome and Asthma. Front Cell Infect Microbiol 2020. [PMID: 33324573 DOI: 10.3389/fcimb.2020.583418/full] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
Asthma is a group of inflammatory conditions that compromises the airways of a continuously increasing number of people around the globe. Its complex etiology comprises both genetic and environmental aspects, with the intestinal and lung microbiomes emerging as newly implicated factors that can drive and aggravate asthma. Longitudinal infant cohort studies combined with mechanistic studies in animal models have identified microbial signatures causally associated with subsequent asthma risk. The recent inclusion of fungi in human microbiome surveys has revealed that microbiome signatures associated with asthma risk are not limited to bacteria, and that fungi are also implicated in asthma development in susceptible individuals. In this review, we examine the unique properties of human-associated and environmental fungi, which confer them the ability to influence immune development and allergic responses. The important contribution of fungi to asthma development and exacerbations prompts for their inclusion in current and future asthma studies in humans and animal models.
Collapse
Affiliation(s)
- Erik van Tilburg Bernardes
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
- Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Mackenzie W Gutierrez
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
- Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Marie-Claire Arrieta
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
- Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| |
Collapse
|
29
|
Mirza AH, Kaur S, Nielsen LB, Størling J, Yarani R, Roursgaard M, Mathiesen ER, Damm P, Svare J, Mortensen HB, Pociot F. Breast Milk-Derived Extracellular Vesicles Enriched in Exosomes From Mothers With Type 1 Diabetes Contain Aberrant Levels of microRNAs. Front Immunol 2019; 10:2543. [PMID: 31708933 PMCID: PMC6823203 DOI: 10.3389/fimmu.2019.02543] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/14/2019] [Indexed: 12/12/2022] Open
Abstract
The breast milk plays a crucial role in shaping the initial intestinal microbiota and mucosal immunity of the infant. Interestingly, breastfeeding has proven to be protective against the early onset of immune-mediated diseases including type 1 diabetes. Studies have shown that exosomes from human breast milk are enriched in immune-modulating miRNAs suggesting that exosomal miRNAs (exomiRs) transferred to the infant could play a critical role in the development of the infant's immune system. We extracted exomiRs from breast milk of 52 lactating mothers (26 mothers with type 1 diabetes and 26 healthy mothers), to identify any differences in the exomiR content between the two groups. Small RNA-sequencing was performed to identify known and novel miRNAs in both groups. A total of 631 exomiRs were detected by small RNA sequencing including immune-related miRNAs such as hsa-let-7c, hsa-miR-21, hsa-miR-34a, hsa-miR-146b, and hsa-miR-200b. In addition, ~200 novel miRNAs were identified in both type 1 diabetes and control samples. Among the known miRNAs, nine exomiR's were found differentially expressed in mothers with type 1 diabetes compared to healthy mothers. The highly up-regulated miRNAs, hsa-miR-4497, and hsa-miR-3178, increased lipopolysaccharide-induced expression and secretion of tumor necrosis factor α (TNFα) in human monocytes. The up-regulated miRNA target genes were significantly enriched for longevity-regulating pathways and FoxO signaling. Our findings suggest a role of breast milk-derived exomiRs in modulating the infant's immune system.
Collapse
Affiliation(s)
- Aashiq H Mirza
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Pediatrics E, Copenhagen Diabetes Research Center (CPH-DIRECT), Herlev and Gentofte Hospital, Herlev, Denmark
| | - Simranjeet Kaur
- Department of Pediatrics E, Copenhagen Diabetes Research Center (CPH-DIRECT), Herlev and Gentofte Hospital, Herlev, Denmark.,Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Lotte B Nielsen
- Department of Pediatrics E, Copenhagen Diabetes Research Center (CPH-DIRECT), Herlev and Gentofte Hospital, Herlev, Denmark
| | - Joachim Størling
- Department of Pediatrics E, Copenhagen Diabetes Research Center (CPH-DIRECT), Herlev and Gentofte Hospital, Herlev, Denmark.,Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Reza Yarani
- Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Martin Roursgaard
- Faculty of Health Sciences, Institute of Public Health, CSS, University of Copenhagen, Copenhagen, Denmark
| | - Elisabeth R Mathiesen
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Endocrinology, Rigshospitalet, Copenhagen, Denmark
| | - Peter Damm
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Center for Pregnant Women With Diabetes, Rigshospitalet, Copenhagen, Denmark.,Department of Obstetrics, Rigshospitalet, Copenhagen, Denmark
| | - Jens Svare
- Department of Obstetrics, Herlev Hospital, Herlev, Denmark
| | - Henrik B Mortensen
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Pediatrics E, Copenhagen Diabetes Research Center (CPH-DIRECT), Herlev and Gentofte Hospital, Herlev, Denmark
| | - Flemming Pociot
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Pediatrics E, Copenhagen Diabetes Research Center (CPH-DIRECT), Herlev and Gentofte Hospital, Herlev, Denmark.,Steno Diabetes Center Copenhagen, Gentofte, Denmark
| |
Collapse
|
30
|
Gaertner VD, Michel S, Curtin JA, Pulkkinen V, Acevedo N, Söderhäll C, von Berg A, Bufe A, Laub O, Rietschel E, Heinzmann A, Simma B, Vogelberg C, Pershagen G, Melén E, Simpson A, Custovic A, Kere J, Kabesch M. Nocturnal asthma is affected by genetic interactions between RORA and NPSR1. Pediatr Pulmonol 2019; 54:847-857. [PMID: 30927345 DOI: 10.1002/ppul.24292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 12/17/2018] [Accepted: 02/04/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Neuropeptide S Receptor 1 ( NPSR1) and Retinoid Acid Receptor-Related Orphan Receptor Alpha (RORA ) interact biologically, are both known candidate genes for asthma, and are involved in controlling circadian rhythm. Thus, we assessed (1) whether interactions between RORA and NPSR1 specifically affect the nocturnal asthma phenotype and (2) how this may differ from other asthma phenotypes. METHODS Interaction effects between 24 single-nucleotide polymorphisms (SNPs) in RORA and 35 SNPs in NPSR1 on asthma and nocturnal asthma symptoms were determined in 1432 subjects (763 asthmatics [192 with nocturnal asthma symptoms]; 669 controls) from the Multicenter Asthma Genetic in Childhood/International Study of Asthma and Allergies in Childhood studies. The results were validated and extended in children from the Manchester Asthma and Allergy Study (N = 723) and the Children Allergy Milieu Stockholm and Epidemiological cohort (N = 1646). RESULTS RORA* NPSR1 interactions seemed to affect both asthma and nocturnal asthma. In stratified analyses, however, interactions mainly affected nocturnal asthma and less so asthma without nocturnal symptoms or asthma severity. Results were replicated in two independent cohorts and seemed to remain constant over time throughout youth. CONCLUSION RORA* NPSR1 interactions appear to be involved in mechanisms specific for nocturnal asthma. In contrast to previous studies focusing on the role of beta 2 receptor polymorphisms in nocturnal asthma as a feature of asthma control or severity in general, our data suggest that changes in circadian rhythm control are associated with nighttime asthma symptoms.
Collapse
Affiliation(s)
- Vincent D Gaertner
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany
| | - Sven Michel
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany
| | - John A Curtin
- Division of Infection Immunity and Respiratory Medicine, School of Biological Sciences, The University of Manchester, Manchester Academic Health Science Centre, and Manchester University NHS Foundation Trust, Manchester, UK
| | - Ville Pulkkinen
- Heart and Lung Center, Division of Pulmonary Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Nathalie Acevedo
- Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden.,Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Cilla Söderhäll
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Department of Women´s and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Andrea von Berg
- Children's Department, Research Institute for the Prevention of Allergic Diseases, Marien-Hospital, Wesel, Germany
| | - Albrecht Bufe
- Department of Experimental Pneumology, Ruhr-University, Bochum, Germany
| | - Otto Laub
- Kinder- und Jugendarztpraxis Laub, Rosenheim, Germany
| | - Ernst Rietschel
- Faculty of Medicine, University Children's Hospital, University of Cologne, Cologne, Germany
| | - Andrea Heinzmann
- Center for Pediatrics, Department of General Pediatrics, Adolescent Medicine and Neonatology, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg im Breisgau, Germany
| | - Burkhard Simma
- Children's Department, University Teaching Hospital, Landeskrankenhaus Feldkirch, Feldkirch, Austria
| | - Christian Vogelberg
- University Children's Hospital, Technical University Dresden, Dresden, Germany
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet and Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet and Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Angela Simpson
- Division of Infection Immunity and Respiratory Medicine, School of Biological Sciences, The University of Manchester, Manchester Academic Health Science Centre, and Manchester University NHS Foundation Trust, Manchester, UK
| | | | - Juha Kere
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Research Programs Unit, Program for Molecular Neurology, University of Helsinki, Folkhälsän Institute of Genetics, Helsinki, Finland
| | - Michael Kabesch
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany.,School of Basic & Medical Biosciences, King's College London, London, England
| |
Collapse
|
31
|
Dijk FN, Folkersma C, Gruzieva O, Kumar A, Wijga AH, Gehring U, Kull I, Postma DS, Vonk JM, Melén E, Koppelman GH. Genetic risk scores do not improve asthma prediction in childhood. J Allergy Clin Immunol 2019; 144:857-860.e7. [PMID: 31145937 DOI: 10.1016/j.jaci.2019.05.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022]
Affiliation(s)
- F Nicole Dijk
- Department of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Charlotte Folkersma
- Department of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Ashish Kumar
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Public Health Epidemiology, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Alet H Wijga
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Ulrike Gehring
- Center for Nutrition, Prevention, and Health Services, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Inger Kull
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset and Karolinska Institutet, Stockholm, Sweden
| | - Dirkje S Postma
- Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Judith M Vonk
- Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Gerard H Koppelman
- Department of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
| |
Collapse
|
32
|
Sethi V, Vitiello GA, Saxena D, Miller G, Dudeja V. The Role of the Microbiome in Immunologic Development and its Implication For Pancreatic Cancer Immunotherapy. Gastroenterology 2019; 156:2097-2115.e2. [PMID: 30768986 DOI: 10.1053/j.gastro.2018.12.045] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/09/2018] [Accepted: 12/17/2018] [Indexed: 12/20/2022]
Abstract
Our understanding of the microbiome and its role in immunity, cancer initiation, and cancer progression has evolved significantly over the past century. The "germ theory of cancer" was first proposed in the early 20th century, and shortly thereafter the bacterium Helicobacter pylori, and later Fusobacterium nucleatum, were implicated in the development of gastric and colorectal cancers, respectively. However, with the development of reliable mouse models and affordable sequencing technologies, the most fascinating aspect of the microbiome-cancer relationship, where microbes undermine cancer immune surveillance and indirectly promote oncogenesis, has only recently been described. In this review, we highlight the essential role of the microbiome in immune system development and maturation. We review how microbe-induced immune activation promotes oncogenesis, focusing particularly on pancreatic carcinogenesis, and show that modulation of the microbiome augments the anti-cancer immune response and enables successful immunotherapy against pancreatic cancer.
Collapse
Affiliation(s)
- Vrishketan Sethi
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Gerardo A Vitiello
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, New York, New York
| | - Deepak Saxena
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, New York, New York; Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York
| | - George Miller
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, New York, New York
| | - Vikas Dudeja
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida.
| |
Collapse
|
33
|
Hallberg J, Ballardini N, Almqvist C, Westman M, van Hage M, Lilja G, Bergström A, Kull I, Melén E. Impact of IgE sensitization and rhinitis on inflammatory biomarkers and lung function in adolescents with and without asthma. Pediatr Allergy Immunol 2019; 30:74-80. [PMID: 30341960 DOI: 10.1111/pai.12994] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/10/2018] [Accepted: 10/02/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Both allergic and non-allergic rhinitis are associated with worse asthma control. However, it is unclear how IgE sensitization and/or rhinitis are associated with lung function. We therefore evaluated the effect of rhinitis and sensitization on lung function, including the periphery of the airway system, and inflammatory biomarkers in individuals with and without asthma. METHODS Participants in the BAMSE longitudinal birth cohort study underwent measures of spirometry, impulse oscillometry, and FeNO at age 16 years. Questionnaires were used to obtain data on asthma and rhinitis. Blood samples were analyzed for eosinophils and allergen-specific IgE. RESULTS Groups based on the combination of asthma, rhinitis, and sensitization were compared to a healthy reference group. Lower FEV1 /FVC levels were seen for groups with asthma only (adjusted mean difference -2.8% units (95% CI -4.7; -1.0), P < 0.01), asthma with sensitization (-2.0 (-3.9; -0.2), P < 0.05), and asthma with sensitization and rhinitis (-2.5 (-3.6; -1.4), P < 0.001). The index of peripheral airway resistance R5-20 was higher in groups with asthma and sensitization (adjusted median difference 94.9 Pa L-1 s-1 (95% CI 60.4; 129.3), P < 0.001), as well as asthma with sensitization and rhinitis (36.9(15.0; 58.8), P < 0.01). These groups also had increased FeNO and blood eosinophil levels. CONCLUSIONS We found signs of peripheral airway obstruction and increased levels of inflammatory biomarkers in the presence of allergic asthma, irrespective of rhinitis status. Despite having a reduced FEV1 /FVC, peripheral airway engagement was not seen in non-sensitized adolescents with asthma. We suggest that small airway disease is a feature related to the eosinophilic inflammation in allergic asthma in adolescence.
Collapse
Affiliation(s)
- Jenny Hallberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden.,Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Natalia Ballardini
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden.,St John's Institute of Dermatology, King's College London, London, UK
| | - Catarina Almqvist
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Pediatric Allergy and Pulmonology Unit, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Marit Westman
- Immunology and Allergy Unit, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.,Department of Ear- Nose and Throat Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Marianne van Hage
- Immunology and Allergy Unit, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Gunnar Lilja
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden.,Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Center of Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Inger Kull
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden.,Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| |
Collapse
|
34
|
Dawod B, Marshall JS. Cytokines and Soluble Receptors in Breast Milk as Enhancers of Oral Tolerance Development. Front Immunol 2019; 10:16. [PMID: 30723472 PMCID: PMC6349727 DOI: 10.3389/fimmu.2019.00016] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/04/2019] [Indexed: 12/13/2022] Open
Abstract
The postpartum period is an important window during which environmental factors can shape the life-long health of the infant. This time period often coincides with substantial milk consumption either in the form of breast milk or from cow's milk sources, such as infant formulas. Although breast milk is the most beneficial source of nutrients for infants during the first 6 months after birth, its role in regulating food allergy development, through regulation of oral tolerance, is still controversial. Breast milk contains several factors that can impact mucosal immune function, including immune cells, antibodies, microbiota, oligosaccharides, cytokines, and soluble receptors. However, there is considerable variation in the assessed levels of cytokines and soluble receptors between studies and across the lactation period. Most of these cytokines and soluble receptors are absent, or only found in limited quantities, in commercial baby formulas. Differences in content of these pluripotent factors, which impact on both the mother and the neonate, could contribute to the controversy surrounding the role of breast milk regulating oral tolerance. This review highlights current knowledge about the importance of cytokines and soluble receptors in breast milk on the development of oral tolerance and tolerance-relateddisorders. Understanding the mechanisms by which such milk components might promote oral tolerance could aid in the development of improved strategies for allergy prevention.
Collapse
Affiliation(s)
- Bassel Dawod
- Department of Pathology, Dalhousie University, Halifax, NS, Canada
| | - Jean S Marshall
- Department of Pathology, Dalhousie University, Halifax, NS, Canada.,Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| |
Collapse
|
35
|
Katsoulis K, Ismailos G, Kipourou M, Kostikas K. Microbiota and asthma: Clinical implications. Respir Med 2018; 146:28-35. [PMID: 30665515 DOI: 10.1016/j.rmed.2018.11.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 10/01/2018] [Accepted: 11/20/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Konstantinos Katsoulis
- Pulmonary Department, 424 Army General Hospital, Periferiaki Odos, 56429, Efkarpia, Thessaloniki, Greece
| | - Georgios Ismailos
- Experimental-Research Center ELPEN, ELPEN Pharmaceuticals, Leoforos Marathonos 95, 19009, Pikermi, Attika, Greece
| | - Maria Kipourou
- Pulmonary Department, 424 Army General Hospital, Periferiaki Odos, 56429, Efkarpia, Thessaloniki, Greece.
| | - Konstantinos Kostikas
- 2nd Respiratory Medicine Department, University of Athens Medical School, Attikon Hospital, Athens, Greece
| |
Collapse
|
36
|
Arigliani M, Spinelli AM, Liguoro I, Cogo P. Nutrition and Lung Growth. Nutrients 2018; 10:E919. [PMID: 30021997 PMCID: PMC6073340 DOI: 10.3390/nu10070919] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 12/21/2022] Open
Abstract
Experimental evidence from animal models and epidemiology studies has demonstrated that nutrition affects lung development and may have a lifelong impact on respiratory health. Chronic restriction of nutrients and/or oxygen during pregnancy causes structural changes in the airways and parenchyma that may result in abnormal lung function, which is tracked throughout life. Inadequate nutritional management in very premature infants hampers lung growth and may be a contributing factor in the pathogenesis of bronchopulmonary dysplasia. Recent evidence seems to indicate that infant and childhood malnutrition does not determine lung function impairment even in the presence of reduced lung size due to delayed body growth. This review will focus on the effects of malnutrition occurring at critical time periods such as pregnancy, early life, and childhood, on lung growth and long-term lung function.
Collapse
Affiliation(s)
- Michele Arigliani
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| | - Alessandro Mauro Spinelli
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| | - Ilaria Liguoro
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| | - Paola Cogo
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| |
Collapse
|
37
|
Richter JC, Jakobsson K, Taj T, Oudin A. High burden of atopy in immigrant families in substandard apartments in Sweden - on the contribution of bad housing to poor health in vulnerable populations. World Allergy Organ J 2018; 11:9. [PMID: 29796150 PMCID: PMC5952630 DOI: 10.1186/s40413-018-0188-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 04/24/2018] [Indexed: 12/29/2022] Open
Abstract
Background Atopic disorders are a global concern. Studies in migrant populations can illuminate the interplay of genetic and environmental factors. Exposures related to bad housing (indoor dampness, mould growth, crowding etc.) are likely to play a role in how socioeconomic inequalities can turn into health disparities for disadvantaged populations. The sizable immigrant population living in very poor-quality housing in Malmö, Sweden, became the focus of a cross-sectional study. Objective To describe atopic disorders and sensitizations in a population living in substandard housing in Malmö, Sweden, with an emphasis on their relation to harmful exposures from the built environment. Methods Families were recruited via identification of any children with symptomatic airway afflictions from health care records, and also asymptomatic children from school lists. Interviewer-led health questionnaire data and data from self-reports about living conditions were obtained together with data from home inspections carried out by health communicators. Families underwent skin prick tests (SPT) against common aeroallergens. Results As could be expected from background demographic information, it turned out that we effectively studied an immigrant population inhabiting very precarious housing outside the center of Malmö. A total of 359 children from 130 families (total 650 participants) were included. Overall the prevalence of potentially harmful environmental exposures was high (signs of moisture or mould in more than 50% of apartments, indoor smoking in 37% of households). Atopic disorders were common among both adults and children. SPTs showed a spectrum of sensitizations consistent with unselected populations in Sweden. Paternal sensitization in the SPT was associated with higher risk of sensitization for offspring than maternal sensitization. Few statistically significant associations of atopic sensitization with studied environmental exposures were detected (for example objective signs of dampness /mould in bathrooms). There were marked discrepancies between asthma diagnoses obtained from the health records and parental reports of such diagnoses and treatment for their children. Conclusions The atopic burden in this selected immigrant population was high, and results point to unmet medical needs. Health care systems caring for such populations need to be aware of their specific health needs; comprehensive asthma and allergy care should include consideration of harmful environmental exposures, adhering to the precautionary principle.
Collapse
Affiliation(s)
- Jens Christian Richter
- 1Division of Occupational and Environmental Medicine, Medical Faculty, Lund University, 22185 Lund, Sweden.,2Department of Respiratory Medicine and Allergology, Lund University Hospital, Region Skåne, Lund, Sweden
| | - Kristina Jakobsson
- 1Division of Occupational and Environmental Medicine, Medical Faculty, Lund University, 22185 Lund, Sweden.,3Department of Occupational and Environmental Medicine, Göteborgs Universitet, Gothenburg, Sweden
| | - Tahir Taj
- 1Division of Occupational and Environmental Medicine, Medical Faculty, Lund University, 22185 Lund, Sweden
| | - Anna Oudin
- 1Division of Occupational and Environmental Medicine, Medical Faculty, Lund University, 22185 Lund, Sweden
| |
Collapse
|
38
|
Schultz ES, Hallberg J, Andersson N, Thacher JD, Pershagen G, Bellander T, Bergström A, Kull I, Guerra S, Thunqvist P, Gustafsson PM, Bottai M, Melén E. Early life determinants of lung function change from childhood to adolescence. Respir Med 2018; 139:48-54. [PMID: 29858001 DOI: 10.1016/j.rmed.2018.04.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/12/2018] [Accepted: 04/17/2018] [Indexed: 12/17/2022]
Abstract
RATIONALE Little is known about how perinatal and childhood factors influence lung function change between childhood and adolescence. OBJECTIVES To investigate possible early life predictors of change in FEV1 between age 8 and 16 years. In addition, to investigate possible predictors of having persistently low lung function (FEV1 <25th percentiles both at age 8 and 16) up to adolescence. METHODS The BAMSE birth cohort study collected data throughout childhood on environmental factors, individual characteristics, and spirometric measures at 8 and 16 years (n = 1425). Associations between early life predictors (n = 31) and FEV1 increase between 8 and 16 years were assessed with linear regression. Predictors of having persistently low lung function were examined. RESULTS Few factors were consistently associated with altered lung function growth, although low birth weight, asthma heredity (paternal), secondhand smoke in infancy, and season of birth had a significant impact (p-value ≤0.01). The majority of subjects stayed however within the same category of lung function between ages 8 and 16 years (in total 821/1425 = 58%). Predictors associated with having persistently low lung function were gestational age, secondhand smoke (at 2 and 8 years of age), and factors related to lower respiratory tract infections in infancy. CONCLUSIONS In summary, rather few exposures in childhood were identified to have a significant impact on lung function growth between childhood and adolescence. Our data support previous study findings indicating that lung function development is influenced by factors before birth and in infancy, including second hand tobacco smoke.
Collapse
Affiliation(s)
- Erica S Schultz
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | - Jenny Hallberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Sachs Children's Hospital, Södersjukhuset, Stockholm, Sweden
| | - Niklas Andersson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Jesse D Thacher
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden
| | - Tom Bellander
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden
| | - Inger Kull
- Sachs Children's Hospital, Södersjukhuset, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset, Sweden
| | - Stefano Guerra
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA; ISGlobal CREAL, CIBERESP, Pompeu Fabra University, Barcelona, Spain
| | - Per Thunqvist
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Sachs Children's Hospital, Södersjukhuset, Stockholm, Sweden
| | - Per M Gustafsson
- The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Central Hospital, Department of Paediatrics, Skövde, Sweden
| | - Matteo Bottai
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Sachs Children's Hospital, Södersjukhuset, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, Sweden
| |
Collapse
|
39
|
Lossius AK, Magnus MC, Lunde J, Størdal K. Prospective Cohort Study of Breastfeeding and the Risk of Childhood Asthma. J Pediatr 2018; 195:182-189.e2. [PMID: 29397158 PMCID: PMC5869148 DOI: 10.1016/j.jpeds.2017.11.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 11/19/2017] [Accepted: 11/29/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVES To study whether the duration of breastfeeding and time for introduction of complementary foods was associated with the risk of childhood asthma. STUDY DESIGN We used data from the Norwegian Mother and Child Study, a nationwide prospective cohort study that recruited pregnant women from across Norway between 1999 and 2008. Children with complete data of breastfeeding up to 18 months and current age >7 years were eligible (n = 41 020). Asthma as the primary outcome was defined based on ≥2 dispensed asthma medications at age 7 years registered in the Norwegian Prescription Database. We used log-binomial regression models to obtain crude relative risks (RRs) in the main analysis, and adjusted for selected confounders in multivariable analyses. RESULTS For duration of any breastfeeding, 5.9% of infants breastfed <6 months (adjusted RR [aRR] 1.05, 0.93-1.19) and 4.6% breastfed 6-11 months (aRR 0.96, 0.87-1.07) had dispensed asthma medications at age 7 years compared with 4.6% of infants breastfed ≥12 months (Ptrend .62). Infants still breastfed at 6 months, but introduced to complementary foods <4 months and 4-6 months, had an aRR of 1.15 (0.98-1.36) and 1.09 (0.94-1.27) respectively, compared with infants fully breastfed for 6 months (Ptrend .09). Ages at introduction of solids or formula separately were not significant predictors (Ptrend .16 and .08, respectively). CONCLUSIONS We found no association between duration of breastfeeding or age of introduction to complementary foods and asthma at age 7 years.
Collapse
Affiliation(s)
| | - Maria Christine Magnus
- The Norwegian Institute of Public Health, Oslo, Norway,MRC Integrative Epidemiology Unit, University of Bristol, Bristol, United Kingdom,School of social and community medicine, University of Bristol, Bristol, United Kingdom
| | - Jon Lunde
- Ped. dpt, Ostfold Hospital Trust, Norway
| | - Ketil Størdal
- Pediatric Department, Ostfold Hospital Trust, Grålum, Norway; The Norwegian Institute of Public Health, Oslo, Norway.
| |
Collapse
|
40
|
Abarca NE, Garro AC, Pearlman DN. Relationship between breastfeeding and asthma prevalence in young children exposed to adverse childhood experiences. J Asthma 2018. [PMID: 29533688 DOI: 10.1080/02770903.2018.1441869] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To investigate if duration of supplemental breastfeeding is associated with a lower asthma risk and whether adverse childhood experiences (ACEs) early in life influence this relationship in children ages 3 to 5 years. METHODS Data were from the 2011-2012 National Survey of Children's Health, a nationally representative cross-sectional survey. Modified Poisson regression models were used to estimate incident risk ratios (IRR) for lifetime and current asthma in young children aged 3 to 5 years (n = 15,642). We tested for effect measure modification using stratified analyses. RESULTS Exclusive breastfeeding for at least 6 months or supplemental breastfeeding for children ≥12 months significantly reduced the risk of lifetime asthma prevalence compared to never breastfed children (IRR 0.64; 95% CI: 0.46-0.88, p = 0.007; and IRR 0.68; 95% CI: 0.47-0.99, p = 0.044, respectively), adjusted for covariates. In stratified analyses, breastfeeding reduced the risk of lifetime asthma for children who experienced 1 ACE but not for children who experienced 2 or more ACEs. CONCLUSION Exclusive breastfeeding for at least 6 months, with and without supplementation, appears to prevent asthma or delay its onset. The protective effect of breastfeeding was attenuated among children who experienced more than 2 ACEs. The known harmful effects that ACEs have on children's health may outweigh the benefits of breastfeeding in reducing the risk of a child developing asthma. Understanding how specific time periods in a child's life may be most affected by exposure to early life adversities, along with the protective effect of breastfeeding against asthma, are important areas of further study.
Collapse
Affiliation(s)
- Nancy E Abarca
- a Department of Epidemiology , Brown University, School of Public Health , Rhode Island , USA
| | - Aris C Garro
- b Departments of Pediatrics and Emergency Medicine , Warren Alpert Medical School of Brown University and Rhode Island Hospital , Rhode Island , USA
| | - Deborah N Pearlman
- a Department of Epidemiology , Brown University, School of Public Health , Rhode Island , USA
| |
Collapse
|
41
|
Dijk FN, Xu C, Melén E, Carsin AE, Kumar A, Nolte IM, Gruzieva O, Pershagen G, Grotenboer NS, Savenije OEM, Antó JM, Lavi I, Dobaño C, Bousquet J, van der Vlies P, van der Valk RJP, de Jongste JC, Nawijn MC, Guerra S, Postma DS, Koppelman GH. Genetic regulation of IL1RL1 methylation and IL1RL1-a protein levels in asthma. Eur Respir J 2018. [PMID: 29519908 DOI: 10.1183/13993003.01377-2017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Interleukin-1 receptor-like 1 (IL1RL1) is an important asthma gene. (Epi)genetic regulation of IL1RL1 protein expression has not been established. We assessed the association between IL1RL1 single nucleotide polymorphisms (SNPs), IL1RL1 methylation and serum IL1RL1-a protein levels, and aimed to identify causal pathways in asthma.Associations of IL1RL1 SNPs with asthma were determined in the Dutch Asthma Genome-wide Association Study cohort and three European birth cohorts, BAMSE (Children/Barn, Allergy, Milieu, Stockholm, an Epidemiological survey), INMA (Infancia y Medio Ambiente) and PIAMA (Prevention and Incidence of Asthma and Mite Allergy), participating in the Mechanisms of the Development of Allergy study. We performed blood DNA IL1RL1 methylation quantitative trait locus (QTL) analysis (n=496) and (epi)genome-wide protein QTL analysis on serum IL1RL1-a levels (n=1462). We investigated the association of IL1RL1 CpG methylation with asthma (n=632) and IL1RL1-a levels (n=548), with subsequent causal inference testing. Finally, we determined the association of IL1RL1-a levels with asthma and its clinical characteristics (n=1101).IL1RL1 asthma-risk SNPs strongly associated with IL1RL1 methylation (rs1420101; p=3.7×10-16) and serum IL1RL1-a levels (p=2.8×10-56). IL1RL1 methylation was not associated with asthma or IL1RL1-a levels. IL1RL1-a levels negatively correlated with blood eosinophil counts, whereas there was no association between IL1RL1-a levels and asthma.In conclusion, asthma-associated IL1RL1 SNPs strongly regulate IL1RL1 methylation and serum IL1RL1-a levels, yet neither these IL1RL1-methylation CpG sites nor IL1RL1-a levels are associated with asthma.
Collapse
Affiliation(s)
- F Nicole Dijk
- Dept of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Chengjian Xu
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Dept of Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Dept of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden.,Sachs Children's Hospital, South General Hospital, Stockholm, Sweden
| | - Anne-Elie Carsin
- ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,Hospital del Mar Research Institute (IMIM), Barcelona, Spain
| | - Asish Kumar
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Dept of Public Health Epidemiology, Unit of Chronic Disease Epidemiology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Ilja M Nolte
- Dept of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Goran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Neomi S Grotenboer
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Laboratory of Allergology and Pulmonary Diseases, Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Olga E M Savenije
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Dept of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Josep Maria Antó
- ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,Hospital del Mar Research Institute (IMIM), Barcelona, Spain
| | - Iris Lavi
- ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,Hospital del Mar Research Institute (IMIM), Barcelona, Spain
| | - Carlota Dobaño
- Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Jean Bousquet
- University Hospital, Montpellier, France.,MACVIA-LR, Contre les MAladies Chroniques pour un VIeillissement Actif en Languedoc-Roussillon, European Innovation Partnership on Active and Healthy Ageing Reference Site, France.,INSERM, VIMA: Ageing and chronic diseases. Epidemiological and Public Health Approaches, U1168, UVSQ, UMR-S 1168, Université Versailles St-Quentin-en-Yvelines, Paris, France
| | - Pieter van der Vlies
- Dept of Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | | | | | - Martijn C Nawijn
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Laboratory of Allergology and Pulmonary Diseases, Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefano Guerra
- ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
| | - Dirkje S Postma
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Dept of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gerard H Koppelman
- Dept of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands .,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| |
Collapse
|
42
|
Retrospective observational cohort study regarding the effect of breastfeeding on challenge-proven food allergy. Eur J Clin Nutr 2018; 72:557-563. [PMID: 29459789 DOI: 10.1038/s41430-018-0117-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 01/24/2018] [Accepted: 01/26/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND/OBJECTIVES Human breast milk is generally regarded as the best nutrition for infants in their first months of life. Whether breastfeeding has a protective effect on food allergy is a point of debate and the subject of this study. SUBJECTS/METHODS This retrospective study was conducted in 649 children who underwent a double-blind placebo-controlled food challenge (DBPCFC) as part of routine care in a tertiary care clinic. Food allergy was defined as having at least one positive DBPCFC to any food. The association between both "any" breastfeeding (yes/no) and its duration in months with food allergy was studied by logistic regression analysis with correction for confounding variables. RESULTS The prevalence of food allergy was 58.9% (n = 382). Of all subjects, 75.8% (n = 492) was breastfed and 24.2% (n = 157) bottle-fed. There was no significant association between food allergy and breastfeeding versus bottle-feeding after correction for the confounding effect of increased breastfeeding by atopic parents and a history of asthma in the child (OR = 1.24, 95% CI = 0.85-1.79, p = 0.27). However, in breastfed children, every additional month of breastfeeding lowered the risk for food allergy by ~4% (OR = 0.96, 95% CI = 0.93-0.99, p = 0.02). No confounders were identified in this association. CONCLUSION These results show for the first time that in children investigated for possible food allergy, every additional month of breastfeeding is associated with a lower risk of developing clinical food allergy as diagnosed by DBPCFC. However, overall, there was no association between the prevalence of food allergy and breastfeeding versus bottle-feeding in this tertiary care population.
Collapse
|
43
|
Thunqvist P, Tufvesson E, Bjermer L, Winberg A, Fellman V, Domellöf M, Melén E, Norman M, Hallberg J. Lung function after extremely preterm birth-A population-based cohort study (EXPRESS). Pediatr Pulmonol 2018; 53:64-72. [PMID: 29152899 DOI: 10.1002/ppul.23919] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 10/30/2017] [Indexed: 11/11/2022]
Abstract
BACKGROUND AND OBJECTIVES Follow-up studies of children and young adults born very-to-moderately preterm show persistent and significant lung function deficits. The aim of the study was to determine lung function and airway mechanics in school-aged children born in 2004 to 2007 and extremely preterm (after 22-26 weeks of gestation). METHODS In a population-based cohort of children born extremely preterm and controls born at term (n = 350), follow-up at 6½-years-of-age was performed using spirometry and impulse oscillometry. Associations to gestational age, smallness for gestational age (SGA), and bronchopulmonary dysplasia (BPD) were assessed. RESULTS Children born extremely preterm had lower forced vital capacity (FVC, z-score: -0.7, 95%CI: -1.0;-0.4), forced expiratory volume (FEV1 , z-score: -1.1, 95%CI: -1.4; -0.8), higher frequency-dependence of resistance (R5-20 , 0.09, 95%CI: 0.05; 0.12 kPa · L-1 · s-1 ) and larger area under the reactance curve (AX, 0.78, 95%CI: 0.49; 1.07 kPa · L-1 ) than controls. In children born at 22-24 weeks of gestation, 24% had FVC and 44% had FEV1 below the lower limit of normal. SGA and severe BPD only marginally contributed to pulmonary outcomes. Asthma-like disease was reported in 40% of extremely preterm children and 15% of controls. CONCLUSION Many children born extremely preterm have altered airway mechanics and significant obstructive reduction in lung function. This warrants consideration for treatment and continued follow-up.
Collapse
Affiliation(s)
- Per Thunqvist
- Department of Pediatrics, Sachs' Children Youth Hospital Södersjukhuset, Stockholm, Sweden.,Department of Clinical Science and Education, Karolinska Institutet, Sodersjukhuset, Stockholm, Sweden
| | - Ellen Tufvesson
- Department of Clinical Sciences, Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Leif Bjermer
- Department of Clinical Sciences, Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Anna Winberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Vineta Fellman
- Department of Pediatrics, Clinical Sciences, Lund University, Lund, Sweden
| | - Magnus Domellöf
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Erik Melén
- Department of Pediatrics, Sachs' Children Youth Hospital Södersjukhuset, Stockholm, Sweden.,Karolinska Institutet, Institute of Environmental Medicine, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Mikael Norman
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.,Department of Neonatal Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Jenny Hallberg
- Department of Pediatrics, Sachs' Children Youth Hospital Södersjukhuset, Stockholm, Sweden.,Karolinska Institutet, Institute of Environmental Medicine, Stockholm, Sweden
| |
Collapse
|
44
|
Abstract
Breast feeding has been associated with improved infant outcomes in multiple aspects, including immune outcomes such as infections and potentially atopy and autoimmunity. However associations do not necessarily implicate cause and effect and at this point, exactly how breast feeding and components of breast milk may modulate the infant's immune compartment remains unclear, especially in humans. Some lines of evidence suggest that breastfeeding affects the development of the infant's thymus, a critical organ for T cell development. This may be a direct effect mediated by breast milk components or alternatively, a secondary effect from the impact of breast feeding on the infant's gut microbiome. Here we discuss the potential mechanisms and impact of this association between breast feeding and thymic development.
Collapse
Affiliation(s)
- Peter S Hsu
- Allergy and Immunology, Kids Research, The Children's Hospital at Westmead, Sydney, NSW, Australia.,Discipline of Child and Adolescent Health, The University of Sydney, Sydney, NSW, Australia
| | - Ralph Nanan
- Charles Perkins Centre Nepean, University of Sydney, Sydney, NSW, Australia
| |
Collapse
|
45
|
DeVane-Johnson S, Giscombe CW, Williams R, Fogel C, Thoyre S. A Qualitative Study of Social, Cultural, and Historical Influences on African American Women's Infant-Feeding Practices. J Perinat Educ 2018; 27:71-85. [PMID: 30863005 PMCID: PMC6388681 DOI: 10.1891/1058-1243.27.2.71] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The purpose of this study was to describe cultural factors influencing African American mothers' perceptions about infant feeding. Analysis of six focus group discussions of diverse African American mothers yielded sociohistorical factors that are rarely explored in the breastfeeding literature. These factors are events, experiences, and other phenomena that have been culturally, socially, and generationally passed down and integrated into families, potentially influencing breastfeeding beliefs and behaviors. The results from this study illuminate fascinating aspects of African American history and the complex context that frames some African American women's choice about breastfeeding versus artificial supplementation feeding. This study also demonstrates the need for developing family centered and culturally relevant strategies to increase the African American breastfeeding rate.
Collapse
|
46
|
Oh SS, Du R, Zeiger AM, McGarry ME, Hu D, Thakur N, Pino-Yanes M, Galanter JM, Eng C, Nishimura KK, Huntsman S, Farber HJ, Meade K, Avila P, Serebrisky D, Bibbins-Domingo K, Lenoir MA, Ford JG, Brigino-Buenaventura E, Rodriguez-Cintron W, Thyne SM, Sen S, Rodriguez-Santana JR, Williams K, Kumar R, Burchard EG. Breastfeeding associated with higher lung function in African American youths with asthma. J Asthma 2017; 54:856-865. [PMID: 27929698 PMCID: PMC6130885 DOI: 10.1080/02770903.2016.1266496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/02/2016] [Accepted: 11/26/2016] [Indexed: 01/06/2023]
Abstract
OBJECTIVE In the United States, Puerto Ricans and African Americans have lower prevalence of breastfeeding and worse clinical outcomes for asthma compared with other racial/ethnic groups. We hypothesize that the history of breastfeeding is associated with increased forced expiratory volume in 1 second (FEV1) % predicted and reduced asthma exacerbations in Latino and African American youths with asthma. METHODS As part of the Genes-environments & Admixture in Latino Americans (GALA II) Study and the Study of African Americans, asthma, Genes & Environments (SAGE II), we conducted case-only analyses in children and adolescents aged 8-21 years with asthma from four different racial/ethnic groups: African Americans (n = 426), Mexican Americans (n = 424), mixed/other Latinos (n = 255), and Puerto Ricans (n = 629). We investigated the association between any breastfeeding in infancy and FEV1% predicted using multivariable linear regression; Poisson regression was used to determine the association between breastfeeding and asthma exacerbations. RESULTS Prevalence of breastfeeding was lower in African Americans (59.4%) and Puerto Ricans (54.9%) compared to Mexican Americans (76.2%) and mixed/other Latinos (66.9%; p < 0.001). After adjusting for covariates, breastfeeding was associated with a 3.58% point increase in FEV1% predicted (p = 0.01) and a 21% reduction in asthma exacerbations (p = 0.03) in African Americans only. CONCLUSION Breastfeeding was associated with higher FEV1% predicted in asthma and reduced number of asthma exacerbations in African American youths, calling attention to continued support for breastfeeding.
Collapse
Affiliation(s)
- Sam S Oh
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Randal Du
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
- b Department of Pharmacy , University of California San Francisco , San Francisco , CA , USA
| | - Andrew M Zeiger
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Meghan E McGarry
- c Department of Pediatrics , University of California San Francisco , San Francisco , CA , USA
| | - Donglei Hu
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Neeta Thakur
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Maria Pino-Yanes
- d Research Unit , Hospital Universitario NS de Candelaria , Santa Cruz de Tenerife , Spain
| | - Joshua M Galanter
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
- e Department of Bioengineering and Therapeutic Sciences , University of California San Franscisco , San Francisco , CA , USA
| | - Celeste Eng
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | | | - Scott Huntsman
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Harold J Farber
- f Department of Pediatrics , Baylor College of Medicine , Houston , TX , USA
- g Department of Pulmonology , Texas Children's Hospital , Houston , TX , USA
| | - Kelley Meade
- h Department of Primary Care , UCSF Benioff Children's Hospital , San Francisco , CA , USA
| | - Pedro Avila
- i Department of Medicine , Northwestern University , Evanston , IL , USA
| | - Denise Serebrisky
- j Department of Pediatric Pulmonology , Jacobi Medical Center , Bronx , NY , USA
| | - Kirsten Bibbins-Domingo
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Michael A Lenoir
- k Department of Pediatrics , Bay Area Pediatrics , Oakland , CA , USA
| | - Jean G Ford
- l Department of Epidemiology , Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA
| | | | | | - Shannon M Thyne
- o Department of Medicine , University of California Los Angeles David Geffen School of Medicine , Los Angeles , CA , USA
| | - Saunak Sen
- p Department of Epidemiology and Biostatistics , University of California San Francisco , San Francisco , CA , USA
| | - Jose R Rodriguez-Santana
- q Department of Pediatric Pulmonology and Critical Care , Centro de Neumología Pediátrica , San Juan , Puerto Rico
| | - Keoki Williams
- r Center for Health Policy and Health Services Research, Henry Ford Health System , Detroit , MI , USA
- s Department of Internal Medicine , Henry Ford Health System , Detroit , MI , USA
| | - Rajesh Kumar
- i Department of Medicine , Northwestern University , Evanston , IL , USA
| | - Esteban G Burchard
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
- e Department of Bioengineering and Therapeutic Sciences , University of California San Franscisco , San Francisco , CA , USA
| |
Collapse
|
47
|
Human Milk and Allergic Diseases: An Unsolved Puzzle. Nutrients 2017; 9:nu9080894. [PMID: 28817095 PMCID: PMC5579687 DOI: 10.3390/nu9080894] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/01/2017] [Accepted: 08/01/2017] [Indexed: 02/07/2023] Open
Abstract
There is conflicting evidence on the protective role of breastfeeding in relation to the development of allergic sensitisation and allergic disease. Studies vary in methodology and definition of outcomes, which lead to considerable heterogeneity. Human milk composition varies both within and between individuals, which may partially explain conflicting data. It is known that human milk composition is very complex and contains variable levels of immune active molecules, oligosaccharides, metabolites, vitamins and other nutrients and microbial content. Existing evidence suggests that modulation of human breast milk composition has potential for preventing allergic diseases in early life. In this review, we discuss associations between breastfeeding/human milk composition and allergy development.
Collapse
|
48
|
Watanabe JI, Tanaka K, Nagata C, Furukawa S, Arakawa M, Miyake Y. Breastfeeding duration is inversely associated with asthma in Japanese children aged 3 years. J Asthma 2017; 55:511-516. [PMID: 28759280 DOI: 10.1080/02770903.2017.1349793] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Recent meta-analyses found an inverse relationship between breastfeeding duration and asthma in children. The present cross-sectional study investigated the associations between breastfeeding duration and the prevalence of wheeze and asthma in Japanese children aged 3 years. METHODS Subjects were 6412 children who participated in the Kyushu Okinawa Child Health Study. Data were collected using a self-administered questionnaire. Wheeze was defined according to the criteria of the International Study of Asthma and Allergies in Childhood. Asthma was considered present if the child had been diagnosed by a physician as having asthma. Associations of breastfeeding duration with wheeze and asthma were estimated using multivariate generalized estimating equation methods adjusted for maternal, family, and health characteristics. RESULTS The prevalence values of wheeze and asthma were 19.5% and 7.0%, respectively. Compared with <4 months of exclusive breastfeeding, exclusive breastfeeding for ≥4 months was not significantly associated with wheeze or asthma. Compared with <10 months of breastfeeding duration regardless of exclusivity, 10 to <14 months, 14 to <19 months, and 19 months or more of breastfeeding duration regardless of exclusivity were independently inversely related to asthma: the adjusted odds ratios [ORs; 95% confidence intervals (CIs)] were 0.69 (0.52-0.91, p = 0.01), 0.73 (0.56-0.97, p = 0.03), and 0.67 (0.51-0.88, p = 0.004), respectively. No association was found between breastfeeding duration regardless of exclusivity and wheeze. CONCLUSIONS We confirmed an inverse association between breastfeeding duration regardless of exclusivity and asthma.
Collapse
Affiliation(s)
- Jun-Ichi Watanabe
- a Department of Epidemiology and Preventive Medicine , Ehime University Graduate School of Medicine , Ehime , Japan
| | - Keiko Tanaka
- a Department of Epidemiology and Preventive Medicine , Ehime University Graduate School of Medicine , Ehime , Japan.,b Epidemiology and Medical Statistics Unit, Translational Research Center , Ehime University Hospital , Ehime , Japan
| | - Chisato Nagata
- c Department of Epidemiology and Preventive Medicine , Gifu University Graduate School of Medicine , Gifu , Japan
| | - Shinya Furukawa
- a Department of Epidemiology and Preventive Medicine , Ehime University Graduate School of Medicine , Ehime , Japan.,b Epidemiology and Medical Statistics Unit, Translational Research Center , Ehime University Hospital , Ehime , Japan
| | - Masashi Arakawa
- d Health Tourism Research Fields, Graduate School of Tourism Sciences , University of the Ryukyus , Okinawa , Japan
| | - Yoshihiro Miyake
- a Department of Epidemiology and Preventive Medicine , Ehime University Graduate School of Medicine , Ehime , Japan.,b Epidemiology and Medical Statistics Unit, Translational Research Center , Ehime University Hospital , Ehime , Japan
| |
Collapse
|
49
|
Genetic and epigenetic regulation of YKL-40 in childhood. J Allergy Clin Immunol 2017; 141:1105-1114. [PMID: 28739286 DOI: 10.1016/j.jaci.2017.06.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/30/2017] [Accepted: 06/14/2017] [Indexed: 01/26/2023]
Abstract
BACKGROUND Circulating levels of the chitinase-like protein YKL-40 are influenced by genetic variation in its encoding gene (chitinase 3-like 1 [CHI3L1]) and are increased in patients with several diseases, including asthma. Epigenetic regulation of circulating YKL-40 early in life is unknown. OBJECTIVE We sought to determine (1) whether methylation levels at CHI3L1 CpG sites mediate the association of CHI3L1 single nucleotide polymorphisms (SNPs) with YKL-40 levels in the blood and (2) whether these biomarkers (CHI3L1 SNPs, methylation profiles, and YKL-40 levels) are associated with asthma in early childhood. METHODS We used data from up to 2405 participants from the Spanish Infancia y Medio Ambiente; the Swedish Barn/Children, Allergy, Milieu, Stockholm, Epidemiological survey; and the Dutch Prevention and Incidence of Asthma and Mite Allergy birth cohorts. Associations between 68 CHI3L1 SNPs, methylation levels at 14 CHI3L1 CpG sites in whole-blood DNA, and circulating YKL-40 levels at 4 years of age were tested by using correlation analysis, multivariable regression, and mediation analysis. Each of these biomarkers was also tested for association with asthma at 4 years of age by using multivariable logistic regression. RESULTS YKL-40 levels were significantly associated with 7 SNPs and with methylation at 5 CpG sites. Consistent associations between these 7 SNPs (particularly rs10399931 and rs4950928) and 5 CpG sites were observed. Alleles linked to lower YKL-40 levels were associated with higher methylation levels. Participants with high YKL-40 levels (defined as the highest YKL-40 tertile) had increased odds for asthma compared with subjects with low YKL-40 levels (meta-analyzed adjusted odds ratio, 1.90 [95% CI, 1.08-3.36]). In contrast, neither SNPs nor methylation levels at CpG sites in CHI3L1 were associated with asthma. CONCLUSIONS The effects of CHI3L1 genetic variation on circulating YKL-40 levels are partly mediated by methylation profiles. In our study YKL-40 levels, but not CHI3L1 SNPs or methylation levels, were associated with childhood asthma.
Collapse
|
50
|
Shin HH, Lynch SJ, Gray AR, Sears MR, Hancox RJ. How much atopy is attributable to common childhood environmental exposures? A population-based birth cohort study followed to adulthood. Int J Epidemiol 2017; 46:2009-2016. [DOI: 10.1093/ije/dyx098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2017] [Indexed: 12/31/2022] Open
|