Microbial exposures that establish immunoregulation are compatible with targeted hygiene

نویسندگان

چکیده

It is often suggested that hygiene not compatible with the microbial exposures are necessary for establishment of immune system in early life. However, when we analyze modern humans context human evolution and history, it becomes evident whereas children need exposure to microbiotas their mothers, other family members, natural environment, unnatural microbiota home less relevant. In addition, any benefits infections childhood within household setting at least partly replaced by recently revealed nonspecific effects vaccines. This article shows how targeting practices key risk moments sites can maximize protection against infection while minimizing impact on essential exposures. Moreover, this must aim reduce direct cleaning agents because those probably exert TH2-adjuvant trigger allergic responses normally innocuous antigens. Finally, halt flow publications scientific literature media blame increases immunoregulatory disorders. Appropriately targeted behavior a healthy lifestyle promotes microorganisms. Microorganisms encountered life populate provide data expand select lymphocyte clones, molecular signals such as some forms endotoxin muramic acid derivatives drive development innate adaptive systems together crucial control mechanisms.1Schuijs M.J. Willart M.A. Vergote K. Gras D. Deswarte Ege et al.Farm dust protect allergy through A20 induction lung epithelial cells.Science. 2015; 349: 1106-1110Crossref PubMed Scopus (340) Google Scholar, 2Ege Mayer M. Normand A.-C. Genuneit J. Cookson W.O.C.M. Braun-Fahrländer C. al.Exposure environmental microorganisms asthma.N Engl J Med. 2011; 364: 701-709Crossref (987) 3Flandroy L. Poutahidis T. Berg G. Clarke Dao M.-C. Decaestecker E. al.The activities lifestyles interlinked health ecosystems.Sci Total Environ. 2018; 627: 1018-1038Crossref (100) Scholar Faulty immunoregulation responsible increased prevalence chronic inflammatory disorders, allergies, autoimmunity, bowel diseases emerge societies adopt Western lifestyles.4von Hertzen Beutler B. Bienenstock Blaser Cani P.D. Eriksson al.Helsinki alert biodiversity health.Ann 47: 218-225Crossref (62) has been faulty attributable distortion inputs domestic practices.5Strachan D.P. Hay fever, hygiene, size.BMJ. 1989; 299: 1259-1260Crossref (3577) However our homes everyday lives lifesaving strategy. use word refer used prevent spread infection. The term will be remove soil dirt produce surface visibly aesthetically clean using products containing materials surfactants, soaps, enzymes, oxidizing agents, acids, or ammonia. enables us modify so preserves continuing We reach conclusion combining an evolutionary approach recent advances understanding roles vaccines effect agents. Which health? Some organisms derived from occupants, others building itself. latter considering evolution. Early lived caves shelters built stones, mud, branches, leaves. These later evolved into houses constructed same reorganized convenience. Walls were straw, timber, stone rendered mixtures soil, clay, animal dung, roofs covered thatch turf. would differ greatly even if damp deteriorating, present which coevolved. contrast, homes, synthetic (including biocide-treated plywood, gypsum board) develop unusual bears little resemblance environment.6Adams R.I. Bhangar S. Dannemiller K.C. Eisen J.A. Fierer N. Gilbert al.Ten questions concerning microbiomes buildings.Building Environment. 2016; 109: 224-234Crossref (80) Scholar,7McCall L.-I. Callewaert Zhu Q. Song S.J. Bouslimani A. Minich J.J. al.Home chemical transitions across urbanization.Nat Microbiol. 2020; 5: 108-115Crossref (24) difference exacerbated urban remote nature.8Parajuli Gronroos Siter Puhakka R. Vari H.K. Roslund M.I. al.Urbanization reduces transfer diverse indoors.Front 9: 84Crossref (47) individuals low socioeconomic status frequently are, its bacterial fungal secondary metabolites toxic humans, resulting various degrees “sick syndrome.”9Andersson Mikkola Kroppenstedt R.M. Rainey F.A. Peltola Helin mitochondrial toxin produced Streptomyces griseus strains isolated indoor environment valinomycin.Appl Environ 1998; 64: 4767-4773Crossref 10Sahlberg Wieslander Norback Sick syndrome relation Sweden--a cohort study 1991 2001.Scand Public Health. 2010; 38: 232-238Crossref (43) 11Salo Marik Andersson Kredics Salonen H. al.Penicillium expansum strain material was able grow board emitted guttation droplets chaetoglobosins communesins A, B D.J Appl 2019; 127: 1135-1147Crossref (9) therefore unlikely optimal, desirable, infants (Fig 1). When more resembles farms beneficial—at where asthma disorders associated concerned.2Ege Scholar,12Hesselmar Hicke-Roberts Lundell A.C. Adlerberth I. Rudin Saalman al.Pet-keeping dose-dependent fashion.PLoS One. 13e0208472Crossref (26) Scholar,13Kirjavainen P.V. Karvonen A.M. Adams Taubel Roponen Tuoresmaki P. al.Farm-like non-farm protects development.Nat 25: 1089-1095Crossref (88) support view, exposing school playgrounds resulted peripheral blood biomarkers immunoregulation.14Roslund Grönroos Nurminen Oikarinen Gazali al.Biodiversity intervention enhances regulation health-associated commensal among daycare children.Sci Adv. 6eaba2578Crossref (33) So epidemiologic considerations point view rather than buildings.15Rook G.A. Regulation environment: ecosystem service health.Proc Natl Acad Sci U S 2013; 110: 18360-18367Crossref (309) At mechanisms driven components LPS 1) specific organisms.1Schuijs For example, entering airways drives expression TNFAIP3, gene encodes A20, protein limits several pathways.1Schuijs Scholar,16Stein M.M. Hrusch C.L. Gozdz Igartua Pivniouk V. Murray S.E. al.Innate Amish Hutterite.N 375: 411-421Crossref (466) Interestingly, detailed found allergies children—and reduced ineffective levels cleaning. fact, study, neither interventions (such handwashing laundering personal towels) nor cleanliness had disorders.17Weber Illi Nowak Schierl Holst O. von Mutius al.Asthma hypothesis. does matter?.Am Respir Crit Care 191: 522-529Crossref (40) also enriched origin.6Adams Mother-to-infant (and sibling-to-infant) infant’s microbiota, well metabolic systems18Galazzo van Best Bervoets Dapaah I.O. Savelkoul P.H. Hornef M.W. al.Development associations birth mode, diet, atopic longitudinal analysis stool samples, collected infancy childhood.Gastroenterology. 158: 1584-1596Abstract Full Text PDF (31) But major factors correlate caesarean deliveries, lack breast-feeding, mother-baby intimacy18Galazzo 19Hesselmar Sjoberg F. Aberg Wold A.E. Pacifier development.Pediatrics. 131: e1829-e1837Crossref (65) 20Renz Skevaki risks: opportunities prevention.Nat Rev Immunol. 2021; 21: 177-191Crossref (21) (together antibiotic poor fall outside scope discussion). child’s appear still accumulating child 5 years age.21Roswall Olsson L.M. Kovatcheva-Datchary Nilsson Tremaroli Simon M.C. al.Developmental trajectory gut during first life.Cell Host Microbe. 29: 765-776.e3Abstract (7) picked up father personnel day care centers environment. Studies social networks have demonstrated person-to-person transmission both home.22Johnson K.V.A. Gut microbiome composition diversity related personality traits.Human Microbiome 15100069Crossref Scholar,23Brito I.L. Gurry Zhao Huang Young S.K. Shea T.P. al.Transmission human-associated along networks.Nat 4: 964-971Crossref (51) findings suggest occurs mostly via normal mother-infant interactions human-derived shed what about pathogens microbiota? 1989 hypothesis mothers siblings help expose infant common thanks improved amenities contributes increase disorders.5Strachan crowd most evolution.24Rook Backhed Levin B.R. McFall-Ngai McLean A.R. Evolution, human-microbe interactions, history plasticity.Lancet. 2017; 390: 521-530Abstract (84) Therefore, state dependence infections. this, studies failed find evidence allergies.25Benn C.S. Melbye Wohlfahrt Bjorksten Aaby Cohort sibling effect, infectious diseases, dermatitis 18 months life.BMJ. 2004; 328: 1223-1228Crossref 26Dunder Tapiainen Pokka Uhari Infections asthma, rhinitis, dermatitis: prospective follow-up survey 12 after controlled randomized intervention.Arch Pediatr Adolesc 2007; 161: 972-977Crossref (32) 27Bremner S.A. Carey I.M. DeWilde Richards Maier W.C. Hilton S.R. al.Infections presenting clinical hay fever two UK cohorts.Allergy. 2008; 63: 274-283Crossref (37) A possible exception Helicobacter pylori, endemic populations millennia. There primes pathways disorders; however, incidence fallen dramatically, H pylori no longer relevant variable.28Chen Y. colonization inversely asthma.J Infect Dis. 198: 553-560Crossref (272) Thus, measures do massive problem discussing here. members public believe “keep strong.” concept may validity. known since 1930s (if you survive them) induce unrelated infections.29Pullinger E.J. influence tuberculosis upon Brucella abortus infection.J Hyg (Lond). 1936; 36: 456-466Crossref (5) although theme essay, they might prime resistance potentially lethal measles regarded very risky strategy obtaining new outlined following section function priming now exerted safely 1980s, began reported vaccination live vaccine Africa overall mortality degree could explained By 2000s, claim being made bacillus Calmette-Guérin (BCG) vaccination, multiple led (measles, polio, smallpox, BCG) enhance children.30Aaby Benn Flanagan K.L. Klein S.L. Kollmann T.R. Lynn D.J. non-specific sex-differential vaccines.Nat 20: 464-470Crossref Scholar,31Benn Fisker A.B. Rieckmann Sørup Vaccinology: time change paradigm?.Lancet e274-e283Abstract (25) similar seen adults. trial confirmed BCG elderly probable virus infections.32Giamarellos-Bourboulis Tsilika Moorlag Antonakos Kotsaki Domínguez-Andrés al.Activate: elderly.Cell. 183: 315-323.e9Abstract (75) explain why treating latent non–HIV-infected but fails survival benefit due causes.33Smieja Marchetti C.A. Cook Smaill F.M. Isoniazid preventing non-HIV infected persons.Cochrane Database Syst Rev. 2000; 1999Cd001363Google cross-protective mediated system, including killer cells monocytes,34Netea M.G. Schlitzer Placek Joosten L.A.B. Schultze J.L. Innate memory: continuum host's response pathogens.Cell 13-26Abstract involve epigenetic changes haematopoietic stem cells.34Netea Scholar,35Adams Weber K.S. Johnson S.M. Exposome immunity training: pathogen order influences cell lineage commitment function.Int Mol Sci. 8462Crossref (3) recovery corresponding infections.36Aaby Bhuiya Nahar Knudsen de Francisco Strong immunization entirely prevention disease: community rural Bangladesh.Int Epidemiol. 2003; 32: 106-115Crossref (73) Such likely low-dose infection, good ventilation keep dose should encouraged. replace infections, do, obviates justification relaxing standards protective only low-income countries wealthy Denmark, Italy, Netherlands, United States.30Aaby Over years, amounts purchased risen steadily.37Aiello Larson E.L. Sedlak Hidden heroes revolution. Sanitation hygiene.Am Cntrol. S128-S151Abstract (20) carried out determine whether these correlates yielded conflicting results. 2 typical examples. 14,541 pregnancies offspring ongoing 1990 high (high frequency face washing, bathing showering) 15 age wheeze eczema between 30 42 age.38Sherriff Golding ALSPAC Study TeamHygiene contemporary population wheezing preschool infants.Arch Dis Child. 2002; 87: 26-29Crossref (82) aforementioned children.17Weber Conflicting fact separate reasons, 1 nothing 239Florsheim E.B. Sullivan Z.A. Khoury-Hanold W. Medzhitov Food biological food quality system.Cell. 184Abstract 40Sasaki Asanuma Momose Furuhata Mizukami Hamaguchi Immunogenicity toxicity different adjuvants characterized profiling biomarker genes nasal immunization.Front 11Crossref (2) 41McKee A.S. Burchill Munks Jin Kappler J.W. Friedman R.S. al.Host DNA released aluminum adjuvant MHC class II-mediated antigen presentation prolongs CD4 T-cell dendritic cells.Proc Scie E1122Crossref (92) 42Gallucci Matzinger Danger signals: SOS system.Curr Opin 2001; 13: 114-119Crossref (964) Scholar). indeed act reducing home, predisposes response. Repeated disinfectant detergents quaternary ammonium compounds, experienced every working personnel, linked epidemiologically adults, especially sprays.43Lemire Dumas Chanoine Temam Severi Boutron-Ruault al.Domestic irritant women.Environ Int. 144106017Crossref (4) cells,39Florsheim permeability.44Akdis CA. Does barrier allergy, autoimmunity conditions? [e-pub ahead print] Nat Available at: https://doi.org/10.1038/s41577-021-00538-7. Accessed April 21, 2021.Google many contain potential allergens extraneous contained product Could inhalation affecting children? cohort,38Sherriff eczema, correlated educational level, smoking, poor, crowded housing.45Sherriff TeamFactors month old 30-35Crossref (17) households, (especially crawling floors) inhale sufficient physiologic effects, TH2 adjuvanticity 2). Mild cytotoxicity lead properties. Eight commercially available combined infuenza administered mice intranasal injection. Then, 24 hours challenge, double-stranded animals' bronchoalveolar lavage fluid measured host death. 3 tested (Alum, AddaVax [an oil-in-water emulsion], SiO2 nanoparticles) caused significant release elicited potent TH1 response.40Sasaki Previous work shown death aluminium II–mediated interaction T cells,41McKee suggesting local initiated integral part adjuvant’s mode action. notion mild damage airway allergies.39Florsheim Scholar,42Gallucci antigens usually evoke tolerance, detected cytotoxin, generated 2).39

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ژورنال

عنوان ژورنال: The Journal of Allergy and Clinical Immunology

سال: 2021

ISSN: ['1097-6825', '0091-6749', '1085-8725']

DOI: https://doi.org/10.1016/j.jaci.2021.05.008