2023
Paired Indoor and Outdoor Nitrogen Dioxide Associated With Childhood Asthma Outcomes in a Mixed Rural-Urban Setting: A Feasibility Study
Wi C, Gent J, Bublitz J, King K, Ryu E, Sorrentino K, Plano J, McKay L, Porcher J, Wheeler P, Chiarella S, DeWan A, Pollitt K, Sheares B, Leaderer B, Juhn Y. Paired Indoor and Outdoor Nitrogen Dioxide Associated With Childhood Asthma Outcomes in a Mixed Rural-Urban Setting: A Feasibility Study. Journal Of Primary Care & Community Health 2023, 14: 21501319231173813. PMID: 37243352, PMCID: PMC10226331, DOI: 10.1177/21501319231173813.Peer-Reviewed Original ResearchConceptsAsthma control statusControl statusAsthma diaryRural-urban settingOutdoor NOChildhood asthma outcomesProspective cohort studySocioeconomic statusLow socioeconomic statusSmall feasibility studyAsthma exacerbationsOlmsted CountyPersistent asthmaAsthma outcomesCohort studyChildhood asthmaRural-urban communityLarger sample sizeAsthmaStudy periodHealth effectsFeasibility studyWeeksStatusLow threshold
2022
Childhood asthma and household exposures to nitrogen dioxide and fine particles: a triple-crossover randomized intervention trial
Gent JF, Holford TR, Bracken MB, Plano JM, McKay LA, Sorrentino KM, Koutrakis P, Leaderer BP. Childhood asthma and household exposures to nitrogen dioxide and fine particles: a triple-crossover randomized intervention trial. Journal Of Asthma 2022, 60: 744-753. PMID: 35796019, PMCID: PMC10162040, DOI: 10.1080/02770903.2022.2093219.Peer-Reviewed Original ResearchConceptsLevels of NOPersistent asthmaAsthma symptomsIntervention trialsNumber of asthmaDays of treatmentSymptom daysAsthma morbidityChildhood asthmaTreatment periodAsthmaCrossover designHousehold exposureSymptomsModest reductionTreatment effectsTreatmentGas stovesTrialsExposureTriple crossoverInterventionChildrenMixed modelsFurther research
2017
NIAID, NIEHS, NHLBI, and MCAN Workshop Report: The indoor environment and childhood asthma—implications for home environmental intervention in asthma prevention and management
Gold DR, Adamkiewicz G, Arshad SH, Celedón JC, Chapman MD, Chew GL, Cook DN, Custovic A, Gehring U, Gern JE, Johnson CC, Kennedy S, Koutrakis P, Leaderer B, Mitchell H, Litonjua AA, Mueller GA, O'Connor GT, Ownby D, Phipatanakul W, Persky V, Perzanowski MS, Ramsey CD, Salo PM, Schwaninger JM, Sordillo JE, Spira A, Suglia SF, Togias A, Zeldin DC, Matsui EC. NIAID, NIEHS, NHLBI, and MCAN Workshop Report: The indoor environment and childhood asthma—implications for home environmental intervention in asthma prevention and management. Journal Of Allergy And Clinical Immunology 2017, 140: 933-949. PMID: 28502823, PMCID: PMC5632590, DOI: 10.1016/j.jaci.2017.04.024.Peer-Reviewed Original ResearchMeSH KeywordsAir Pollution, IndoorAnimalsAsthmaBiomedical ResearchChildConsensus Development Conferences, NIH as TopicDrug IndustryEnvironmental HealthFund RaisingHumansNational Heart, Lung, and Blood Institute (U.S.)National Institute of Allergy and Infectious Diseases (U.S.)National Institute of Environmental Health Sciences (U.S.)Organizations, NonprofitUnited StatesConceptsEnvironmental exposuresCommon chronic childhood diseaseEnvironmental interventionsMerck Childhood Asthma NetworkControl of asthmaExacerbation of asthmaManagement of asthmaChronic childhood diseaseHome environmental interventionsExposure reduction techniquesNational InstituteAirway allergyAsthma preventionAsthma managementAsthma NetworkBlood InstituteChildhood asthmaNational HeartChildhood diseasesAsthmaEnvironmental Health SciencesInfectious diseasesStudy designBiologic propertiesIndoor exposure
2016
Indoor microbial communities: Influence on asthma severity in atopic and nonatopic children
Dannemiller KC, Gent JF, Leaderer BP, Peccia J. Indoor microbial communities: Influence on asthma severity in atopic and nonatopic children. Journal Of Allergy And Clinical Immunology 2016, 138: 76-83.e1. PMID: 26851966, PMCID: PMC5357886, DOI: 10.1016/j.jaci.2015.11.027.Peer-Reviewed Original ResearchConceptsAsthma severityAtopic statusAtopic childrenNonatopic childrenLogistic regressionMicrobial exposureChildhood asthma severityCohort of childrenAsthmatic childrenAllergenic fungal speciesTotal fungal concentrationsSeverityHouse dustCryptococcus speciesExposure metricsChildrenT-testCohortQuantitative PCRFungal concentrationsAssociationExposureNext-generation DNA sequencingStatusRegression
2015
Influence of housing characteristics on bacterial and fungal communities in homes of asthmatic children
Dannemiller KC, Gent JF, Leaderer BP, Peccia J. Influence of housing characteristics on bacterial and fungal communities in homes of asthmatic children. Indoor Air 2015, 26: 179-192. PMID: 25833176, PMCID: PMC4591094, DOI: 10.1111/ina.12205.Peer-Reviewed Original ResearchConceptsHousing characteristicsCommunity structureFungal community structureAC usePresence of petsBacterial community structureIndoor microbial communitiesBeneficial bacterial taxaNext-generation DNA sequencingAir conditioning useMicrobial assemblyFungal communitiesMicrobial ecologyCommunity compositionMicrobial communitiesBacterial communitiesBacterial taxaSpecies segregationLevel of urbanizationMicrobial richnessOccupancy characteristicsSuburban homesWater leaksSouthern New EnglandOccupant characteristics
2014
Asthma medication use during pregnancy, wheeze and estimated exposure to ambient nitrogen dioxide
Gent JF, Kezik JM, Hill ME, McKay LA, Holford TR, Leaderer BP, Bracken MB. Asthma medication use during pregnancy, wheeze and estimated exposure to ambient nitrogen dioxide. European Respiratory Journal 2014, 45: 538-540. PMID: 25537555, PMCID: PMC4331059, DOI: 10.1183/09031936.00161514.Peer-Reviewed Original ResearchConceptsAsthma medication useMedication usePregnant womenRisk of wheezePoor pulmonary functionAdverse health outcomesPregnant asthmaticsAsthma exacerbationsAsthma medicationsPerinatal complicationsPulmonary functionFetal growthHealth outcomesPregnancyNO2 exposureWheezeAsthmaMedicationsWomenAmbient nitrogen dioxideMothersMinimal effectExposureAsthmaticsExacerbation
2013
Household Levels of Nitrogen Dioxide and Pediatric Asthma Severity
Belanger K, Holford TR, Gent JF, Hill ME, Kezik JM, Leaderer BP. Household Levels of Nitrogen Dioxide and Pediatric Asthma Severity. Epidemiology 2013, 24: 320-330. PMID: 23337243, PMCID: PMC3686297, DOI: 10.1097/ede.0b013e318280e2ac.Peer-Reviewed Original ResearchConceptsAsthma severityNight symptomsAsthma morbiditySeverity scoreNO2 exposureHigher asthma severity scoresFrequency of wheezeIndoor NO2 exposurePediatric asthma severityRescue medication useIndoor allergen exposureAsthma severity scoreAdverse respiratory effectsDose-dependent increaseYears of ageInner-city childrenLogistic regression modelsRescue medicationActive asthmaAllergen exposureAsthmatic childrenMedication useRespiratory effectsChildren 5Health outcomes
2012
Household mold and dust allergens: Exposure, sensitization and childhood asthma morbidity
Gent JF, Kezik JM, Hill ME, Tsai E, Li DW, Leaderer BP. Household mold and dust allergens: Exposure, sensitization and childhood asthma morbidity. Environmental Research 2012, 118: 86-93. PMID: 22863552, PMCID: PMC3604733, DOI: 10.1016/j.envres.2012.07.005.Peer-Reviewed Original ResearchConceptsRisk of wheezeSpecific allergen sensitizationRescue medication useChildhood asthma morbidityAsthma severity scoreMedication useAllergen sensitizationPersistent coughAsthma morbiditySeverity scoreHigher asthma severity scoresCommon household allergensCommon indoor allergensFel d 1Der p 1Asthma exacerbationsAllergen exposureLevel of exposureAsthmatic childrenDer pAllergy testingIndoor allergensSchool-aged childrenPet allergensDust allergensAn environmental epigenetic study of ADRB2 5′‐UTR methylation and childhood asthma severity
Fu A, Leaderer BP, Gent JF, Leaderer D, Zhu Y. An environmental epigenetic study of ADRB2 5′‐UTR methylation and childhood asthma severity. Clinical & Experimental Allergy 2012, 42: 1575-1581. PMID: 22862293, PMCID: PMC3673701, DOI: 10.1111/j.1365-2222.2012.04055.x.Peer-Reviewed Original ResearchConceptsChildhood asthma severityAsthma severitySevere asthmaSignificant associationSevere childhood asthmaBeta-agonist treatmentBeta-2 adrenergic receptorsImportant environmental exposuresAsthma exacerbationsAsthma medicationsMild asthmaChildhood asthmaSurrogate biomarkerMethylation-specific PCRPotential joint effectsClinical relevanceAdrenergic receptorsAsthmaADRB2SeverityEnvironmental exposuresIndoor exposureChildrenAssociationBloodEffects of Ambient Pollen Concentrations on Frequency and Severity of Asthma Symptoms Among Asthmatic Children
DellaValle CT, Triche EW, Leaderer BP, Bell ML. Effects of Ambient Pollen Concentrations on Frequency and Severity of Asthma Symptoms Among Asthmatic Children. Epidemiology 2012, 23: 55-63. PMID: 22082997, PMCID: PMC3246281, DOI: 10.1097/ede.0b013e31823b66b8.Peer-Reviewed Original ResearchConceptsShortness of breathRescue medication useAsthma maintenance medicationsMaintenance medicationPersistent coughSensitized childrenChest tightnessNight symptomsAsthmatic childrenMedication usePollen exposureSeverity of asthmaDaily respiratory symptomsWeed pollenLogistic regression analysisLow exposureSeparate logistic regression analysesAsthmatic symptomsRespiratory symptomsDaily symptomsAntibiotic useSymptom outcomesDaily ambientMedicationsAmbient pollen concentrations
2011
Urban land-use and respiratory symptoms in infants
Ebisu K, Holford TR, Belanger KD, Leaderer BP, Bell ML. Urban land-use and respiratory symptoms in infants. Environmental Research 2011, 111: 677-684. PMID: 21530957, PMCID: PMC3114197, DOI: 10.1016/j.envres.2011.04.004.Peer-Reviewed Original ResearchAssociation of maternal anemia with increased wheeze and asthma in children
Triche EW, Lundsberg LS, Wickner PG, Belanger K, Leaderer BP, Bracken MB. Association of maternal anemia with increased wheeze and asthma in children. Annals Of Allergy Asthma & Immunology 2011, 106: 131-139.e1. PMID: 21277514, PMCID: PMC3073499, DOI: 10.1016/j.anai.2010.11.007.Peer-Reviewed Original ResearchConceptsMaternal anemiaEarly-onset transientRespiratory health outcomesChildren of womenOffspring of mothersRespiratory disease developmentChildren of mothersYears of ageEarly childhoodAge 3Delivery hospitalizationsRecurrent wheezeCurrent asthmaAsthma diagnosisChildhood asthmaInfant wheezeMaternal nutritionRespiratory healthWheezeAsthmaAnemiaHealth outcomesPregnancyAnemia diagnosisMicronutrient status
2009
Household airborne Penicillium associated with peak expiratory flow variability in asthmatic children
Bundy KW, Gent JF, Beckett W, Bracken MB, Belanger K, Triche E, Leaderer BP. Household airborne Penicillium associated with peak expiratory flow variability in asthmatic children. Annals Of Allergy Asthma & Immunology 2009, 103: 26-30. PMID: 19663123, PMCID: PMC2746059, DOI: 10.1016/s1081-1206(10)60139-1.Peer-Reviewed Original ResearchConceptsPeak expiratory flow variabilityExpiratory flow variabilityAsthmatic childrenAirway hyperreactivityPeak expiratory flowYears of ageLogistic regression modelsAsthma prevalencePhysician diagnosisExpiratory flowChildren 6HyperreactivityChildrenAirborne mold concentrationsRegression modelsAgeCommon moldsIndoor fungiExposureMold concentrationsHomeAsthmaAirborne fungiTotal moldPrevalenceSymptoms and Medication Use in Children with Asthma and Traffic-Related Sources of Fine Particle Pollution
Gent JF, Koutrakis P, Belanger K, Triche E, Holford TR, Bracken MB, Leaderer BP. Symptoms and Medication Use in Children with Asthma and Traffic-Related Sources of Fine Particle Pollution. Environmental Health Perspectives 2009, 117: 1168-1174. PMID: 19654929, PMCID: PMC2717146, DOI: 10.1289/ehp.0800335.Peer-Reviewed Original ResearchConceptsMedication useInhaler useLikelihood of wheezeExacerbation of asthmaMeasures logistic regression modelsRisk of symptomsRespiratory health effectsYears of ageHealth outcomes riskLikelihood of symptomsLogistic regression modelsAsthma 4Outcome riskAsthmaHealth outcomesDaily exposureSymptomsHealth effectsStudy diariesParticle exposureHealth impactsChildrenPublic healthExposureRegression models
2001
Use of Health Services by Insurance Status Among Children With Asthma
Ortega A, Belanger K, Paltiel A, Horwitz S, Bracken M, Leaderer B. Use of Health Services by Insurance Status Among Children With Asthma. Medical Care 2001, 39: 1065-1074. PMID: 11567169, DOI: 10.1097/00005650-200110000-00004.Peer-Reviewed Original ResearchConceptsPrimary care visitsHealth care useEmergency departmentInsurance statusCare visitsAsthmatic childrenMedication useCare useAsthma-related risk factorsRoutine primary care visitsProspective cohort studyHealth care visitsHealth care utilizationChildhood asthma severityPatient-provider communicationWhite childrenMedical DictionaryNew England hospitalsRace/ethnicityAsthma specialistCohort studyMedicaid childrenAsthma severityIndependent predictorsCare utilizationThe relation between fungal propagules in indoor air and home characteristics
Ren P, Jankun T, Belanger K, Bracken M, Leaderer B. The relation between fungal propagules in indoor air and home characteristics. Allergy 2001, 56: 419-424. PMID: 11350305, DOI: 10.1034/j.1398-9995.2001.056005419.x.Peer-Reviewed Original ResearchMeSH KeywordsAir MicrobiologyAir Pollution, IndoorAnimalsAnimals, DomesticAsthmaCatsEnvironmental MonitoringEpidemiological MonitoringFamily CharacteristicsFungiHeatingHousingHumansHumidityIncomeInfantNew EnglandPredictive Value of TestsProspective StudiesSeasonsSurveys and QuestionnairesTime FactorsVentilationConceptsCFU/m3 airInfants' bedroomsMain living areaProspective cohort studyDevelopment of asthmaHome characteristicsAnnual household incomeAllergen exposureCohort studyEpidemiologic studiesM3 airPresence of petsExposure levelsExposure assessmentSignificant differencesBurkard portable air samplerLiving areasQuestionnaireIndoor airFungal exposure assessmentHouse characteristicsHousehold incomeHomeDG-18AsthmaA childhood asthma severity scale: symptoms, medications, and health care visits
Ortega A, Belanger K, Bracken M, Leaderer B. A childhood asthma severity scale: symptoms, medications, and health care visits. Annals Of Allergy Asthma & Immunology 2001, 86: 405-413. PMID: 11345283, DOI: 10.1016/s1081-1206(10)62486-6.Peer-Reviewed Original ResearchConceptsHealth care visitsChildhood asthma severityCare visitsAsthma severityLarge-scale epidemiologic studiesAsthma severity scaleMedication useSeverity ScaleEpidemiologic studiesHome interviewsProspective cohort studyHealth care utilizationCohort studyAsthmatic childrenCare utilizationDaily symptomsInsurance statusConnecticut hospitalsGeneral populationClinimetric propertiesClinimetric validityMaternal educationClinical diagnosisParticipant characteristicsSymptomsRisk Factors for Asthma Prevalence Among Urban and Nonurban African American Children
von Maffei J, Beckett W, Belanger K, Triche E, Zhang H, Machung J, Leaderer B. Risk Factors for Asthma Prevalence Among Urban and Nonurban African American Children. Journal Of Asthma 2001, 38: 555-564. PMID: 11714078, DOI: 10.1081/jas-100107120.Peer-Reviewed Original ResearchConceptsRisk factorsUrban residenceAfrican American childrenMaternal cigarette smokingPhysician-diagnosed asthmaMultiple risk factorsYears of ageMaternal asthmaAsthmatic childrenAsthma prevalenceCigarette smokingAsthmaAmerican childrenAfrican American mothersIdentifiable factorsChildrenAmerican mothersResidenceFactorsSmokingAllergyNewbornsPrevalence
1997
Epidemiologic evidence of an association between air quality and asthma.
Leaderer B, Beckett W. Epidemiologic evidence of an association between air quality and asthma. Journal Of Pharmacy And Pharmacology 1997, 49 Suppl 3: 39-44. PMID: 9178206.Commentaries, Editorials and Letters
1996
Asthma among Puerto Rican Hispanics: a multi-ethnic comparison study of risk factors.
Beckett W, Belanger K, Gent J, Holford T, Leaderer B. Asthma among Puerto Rican Hispanics: a multi-ethnic comparison study of risk factors. American Journal Of Respiratory And Critical Care Medicine 1996, 154: 894-899. PMID: 8887582, DOI: 10.1164/ajrccm.154.4.8887582.Peer-Reviewed Original ResearchConceptsRisk factorsPuerto Rican HispanicsSocioeconomic statusHispanic ethnicityHispanic mothersEnvironmental tobacco smoke exposureIndependent risk factorPhysician-diagnosed asthmaPrevalence of asthmaTobacco smoke exposureStrong risk factorAfrican American ethnicityEnvironmental risk factorsYr of ageLow socioeconomic statusStudy of asthmaNon-Hispanic whitesMo of ageActive smokingAsthmatic childrenSmoke exposureChildhood asthmaCigarette smokersMaternal ageMaternal history