1   529 102 ASTHMA IN URBAN CHILDREN: EPIDEMIOLOGY, ENVIRONMENTAL RISK FACTORS, AND THE PUBLIC HEALTH DOMAIN. ASTHMA IS THE MOST COMMONLY REPORTED CHRONIC CONDITION OF CHILDHOOD IN DEVELOPED COUNTRIES, WITH 6.5 MILLION CHILDREN AFFECTED IN THE USA. A DISPARATE BURDEN OF CHILDHOOD ASTHMA IS SEEN AMONG SOCIOECONOMICALLY DISADVANTAGED YOUTH, OFTEN CONCENTRATED IN URBAN AREAS WITH HIGH POVERTY RATES. HOST FACTORS THAT PREDISPOSE A CHILD TO ASTHMA INCLUDE ATOPY, MALE GENDER, PARENTAL HISTORY OF ASTHMA, AND ALSO RACE, ETHNICITY, AND GENETIC AND EPIGENETIC SUSCEPTIBILITIES. ENVIRONMENTAL FACTORS, SUCH AS IMPROVED HYGIENE, AMBIENT AIR POLLUTION, AND EARLY LIFE EXPOSURES TO MICROBES AND AEROALLERGENS, ALSO INFLUENCE THE DEVELOPMENT OF ASTHMA. WITH GREATER THAN 90% OF TIME SPENT INDOORS, HOME EXPOSURES (SUCH AS COCKROACH, RODENT, AND INDOOR AIR POLLUTION) ARE HIGHLY RELEVANT FOR URBAN ASTHMA. MORBIDITY REDUCTION MAY REQUIRE FOCUSED PUBLIC HEALTH INITIATIVES FOR ENVIRONMENTAL INTERVENTION IN HIGH PRIORITY RISK GROUPS AND THE ADDITION OF IMMUNE MODULATORY AGENTS IN CHILDREN WITH POORLY CONTROLLED DISEASE.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
2  3993  27 LONGITUDINAL FOLLOW-UP OF THE ASTHMA STATUS IN A FRENCH-CANADIAN COHORT. ASTHMA AFFECTS 340 MILLION PEOPLE WORLDWIDE AND VARIES IN TIME. TWENTY YEARS AGO, IN CANADA, THE SAGUENAY-LAC-SAINT-JEAN ASTHMA FAMILY COHORT WAS CREATED TO STUDY THE GENETIC AND ENVIRONMENTAL COMPONENTS OF ASTHMA. THIS STUDY IS A FOLLOW-UP OF 125 PARTICIPANTS OF THIS COHORT TO EXPLORE THE APPEARANCE, PERSISTENCE, AND PROGRESSION OF ASTHMA OVER 10-20 YEARS. PARTICIPANTS ANSWERED A CLINICAL STANDARDIZED QUESTIONNAIRE. LUNG FUNCTION WAS ASSESSED (FORCED EXPIRATORY VOLUME IN 1 S, FORCED VITAL CAPACITY, BRONCHIAL REVERSIBILITY, AND METHACHOLINE BRONCHOPROVOCATION), SKIN ALLERGY TESTING WAS PERFORMED, BLOOD SAMPLES WERE OBTAINED (IMMUNOGLOBULIN E, WHITE BLOOD CELL COUNTS) AND PHENOTYPES WERE COMPARED BETWEEN RECRUITMENT AND FOLLOW-UP. FROM THE PARTICIPANTS WITHOUT ASTHMA AT RECRUITMENT, 12% DEVELOPED A PHENOTYPE OF ADULT-ONSET ASTHMA WITH THE PRESENCE OF RISK FACTORS, SUCH AS ATOPY, HIGH BODY MASS INDEX, AND EXPOSURE TO SMOKING. A DECREASE OF PC(20) VALUES IN THIS GROUP WAS OBSERVED AND A DECREASE IN THE FEV(1)/FVC RATIO IN ALL GROUPS. ALSO, 7% OF INDIVIDUALS WITH ASTHMA AT RECRUITMENT DEVELOPED CHRONIC OBSTRUCTIVE PULMONARY DISEASE, PRESENTING RISK FACTORS AT RECRUITMENT, SUCH AS MODERATE-TO-SEVERE BRONCHIAL HYPERRESPONSIVENESS, EXPOSURE TO SMOKING, AND ASTHMA. THIS STUDY ALLOWED A BETTER INTERPRETATION OF THE EVOLUTION OF ASTHMA. FINE PHENOTYPIC CHARACTERIZATION IS THE FIRST STEP FOR MEANINGFUL GENETIC AND EPIGENETIC STUDIES.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
3   846  27 CHILDHOOD EXPOSURE TO AMBIENT POLYCYCLIC AROMATIC HYDROCARBONS IS LINKED TO EPIGENETIC MODIFICATIONS AND IMPAIRED SYSTEMIC IMMUNITY IN T CELLS. BACKGROUND: EVIDENCE SUGGESTS THAT EXPOSURE TO POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) INCREASES ATOPY; IT IS UNCLEAR HOW PAH EXPOSURE IS LINKED TO INCREASED SEVERITY OF ATOPIC DISEASES. OBJECTIVE: WE HYPOTHESIZED THAT AMBIENT PAH EXPOSURE IS LINKED TO IMPAIRMENT OF IMMUNITY IN ATOPIC CHILDREN (DEFINED AS CHILDREN WITH ASTHMA AND/OR ALLERGIC RHINITIS) FROM FRESNO, CALIFORNIA, AN AREA WITH ELEVATED AMBIENT PAHS. METHODS: WE RECRUITED 256 SUBJECTS FROM FRESNO, CA. AMBIENT PAH CONCENTRATIONS (NG/M(3) ) WERE MEASURED USING A SPATIAL-TEMPORAL REGRESSION MODEL OVER MULTIPLE TIME PERIODS. ASTHMA DIAGNOSIS WAS DETERMINED BY CURRENT NHLBI CRITERIA. PHENOTYPING AND FUNCTIONAL IMMUNE MEASUREMENTS WERE PERFORMED FROM ISOLATED CELLS. FOR EPIGENETIC MEASUREMENTS, DNA WAS ISOLATED AND PYROSEQUENCED. RESULTS: WE SHOW THAT HIGHER AVERAGE PAH EXPOSURE WAS SIGNIFICANTLY ASSOCIATED WITH IMPAIRED TREG FUNCTION AND INCREASED METHYLATION IN THE FORKHEAD BOX PROTEIN 3 (FOXP3) LOCUS (P < 0.05), CONDITIONAL ON ATOPIC STATUS. THESE EPIGENETIC MODIFICATIONS WERE SIGNIFICANTLY LINKED TO DIFFERENTIAL PROTEIN EXPRESSION OF FOXP3 (P < 0.001). METHYLATION WAS ASSOCIATED WITH CELLULAR FUNCTIONAL CHANGES, SPECIFICALLY TREG DYSFUNCTION, AND AN INCREASE IN TOTAL PLASMA IGE LEVELS. PROTEIN EXPRESSION OF IL-10 DECREASED AND IFN-GAMMA INCREASED AS THE EXTENT OF PAH EXPOSURE INCREASED. THE STRENGTH OF THE ASSOCIATIONS GENERALLY INCREASED AS THE TIME WINDOW FOR AVERAGE PAH EXPOSURE INCREASED FROM 24 HR TO 1 YEAR, SUGGESTING MORE OF A CHRONIC RESPONSE. SIGNIFICANT ASSOCIATIONS WITH CHRONIC PAH EXPOSURE AND IMMUNE OUTCOMES WERE ALSO OBSERVED IN SUBJECTS WITH ALLERGIC RHINITIS. CONCLUSIONS AND CLINICAL RELEVANCE: COLLECTIVELY, THESE RESULTS DEMONSTRATE THAT INCREASED AMBIENT PAH EXPOSURE IS ASSOCIATED WITH IMPAIRED SYSTEMIC IMMUNITY AND EPIGENETIC MODIFICATIONS IN A KEY LOCUS INVOLVED IN ATOPY: FOXP3, WITH A HIGHER IMPACT ON ATOPIC CHILDREN. THE RESULTS SUGGEST THAT INCREASED ATOPIC CLINICAL SYMPTOMS IN CHILDREN COULD BE LINKED TO INCREASED PAH EXPOSURE IN AIR POLLUTION.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
4  1760  27 EARLY PREDICTORS OF ASTHMA AND ALLERGY IN CHILDREN: THE ROLE OF EPIGENETICS. PURPOSE OF REVIEW: ASTHMA AND ALLERGIC DISEASES ARE AMONG THE MOST PREVALENT CHRONIC NONCOMMUNICABLE DISEASES OF CHILDHOOD. ALTHOUGH EPIDEMIOLOGIC STUDIES SUGGEST THAT ASTHMA BEGINS IN THE PRESCHOOL YEARS, THE LACK OF FIRM DIAGNOSTIC CRITERIA TO DISTINGUISH CHILDREN WHO WILL WHEEZE ONLY TRANSIENTLY DURING EARLY-LIFE LOWER RESPIRATORY ILLNESSES FROM CHILDREN WHO WILL WHEEZE PERSISTENTLY AND DEVELOP ASTHMA PREVENTS PINPOINTING THE TIME AT WHICH DISEASE TRULY BEGINS. EPIGENETIC MECHANISMS LINK GENE REGULATION TO ENVIRONMENTAL CUES AND DEVELOPMENTAL TRAJECTORIES. THIS ARTICLE REVIEWS, THE SEARCH FOR EPIGENETIC PREDICTORS OF ASTHMA AND/OR ALLERGY THAT CAN BE IDENTIFIED ALREADY AT BIRTH AND/OR IN EARLY LIFE. RECENT FINDINGS: DNA METHYLATION SIGNATURES ASSOCIATED WITH ASTHMA AND/OR ALLERGY AT BIRTH, AND TIME-DEPENDENT DNA METHYLATION SIGNATURES ASSOCIATED WITH ALLERGIC DISEASE PHENOTYPES IN EARLY LIFE HAVE BEEN IDENTIFIED. SUMMARY: THE IDENTIFICATION OF EARLY EPIGENETIC PREDICTORS OF ALLERGIC DISEASES POINTS TO A POTENTIAL ROLE OF EPIGENETIC MECHANISMS IN REGULATING THE INCEPTION OF AND THE SUSCEPTIBILITY TO THESE DISEASES. PREDICTIVE SIGNATURES TO MORE ACCURATELY ESTIMATE A CHILD'S RISK FOR ASTHMA AND ALLERGY MAY IMPROVE CHILDHOOD ASTHMA DIAGNOSIS. MOREOVER, UNDERSTANDING THE BIOLOGICAL IMPLICATIONS OF THESE SIGNATURES MAY HELP ELUCIDATE NOVEL DISEASE PATHWAYS AND ENDOTYPES.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
5  1845  22 EFFECTS OF THE MEDITERRANEAN DIET DURING PREGNANCY ON THE ONSET OF ALLERGY IN AT RISK CHILDREN: A STUDY PROTOCOL OF A MULTI-CENTER, RANDOMIZED- CONTROLLED, PARALLEL GROUPS, PROSPECTIVE TRIAL (THE PREMEDI STUDY). INTRODUCTION: MATERNAL DIET DURING PREGNANCY HAS BEEN LINKED TO OFFSPRING ALLERGY RISK AND IT COULD REPRESENT A POTENTIAL TARGET FOR ALLERGY PREVENTION. THE MEDITERRANEAN DIET (MD) IS CONSIDERED ONE OF THE HEALTHIEST DIETARY MODELS. RANDOMIZED-CONTROLLED TRIALS ON THE EFFECT OF MD IN PREVENTING PEDIATRIC ALLERGIC DISEASES ARE STILL NEEDED. METHODS AND ANALYSIS: THE MEDITERRANEAN DIET DURING PREGNANCY STUDY (PREMEDI) WILL BE A 9-MONTH MULTI-CENTER, RANDOMIZED-CONTROLLED, PARALLEL GROUPS, PROSPECTIVE TRIAL. HEALTHY WOMEN (20-35 YEARS) AT THEIR FIRST TRIMESTER OF PREGNANCY AT RISK FOR ATOPY BABY, WILL BE RANDOMLY ALLOCATED TO GROUP 1 (STANDARD OBSTETRICAL AND GYNECOLOGICAL FOLLOW-UP AND NUTRITIONAL COUNSELING TO PROMOTE MD) OR GROUP 2 (STANDARD OBSTETRICAL AND GYNECOLOGICAL FOLLOW-UP ALONE). 138 MOTHER-CHILD PAIR PER GROUP WILL BE NEEDED TO DETECT A REDUCTION IN CUMULATIVE INCIDENCE OF >/=1 ALLERGIC DISEASE AT 24 MONTHS OF AGE. THE PRIMARY STUDY AIM WILL BE THE EVALUATION OF THE OCCURRENCE OF ALLERGIC DISORDERS IN THE FIRST 24 MONTHS OF LIFE. THE SECONDARY AIMS WILL BE THE EVALUATION OF MATERNAL WEIGHT GAIN, PREGNANCY/PERINATAL COMPLICATIONS, GROWTH INDICES AND OCCURRENCE OF OTHER CHRONIC DISORDERS, MOTHER-CHILD PAIR ADHERENCE TO MD AND GUT MICROBIOME FEATURES, BREASTFEEDING DURATION AND BREAST MILK COMPOSITION, EPIGENETIC MODULATION OF GENES INVOLVED IN IMMUNE SYSTEM, AND METABOLIC PATHWAYS IN THE OFFSPRING. ETHICS AND DISSEMINATION: THE STUDY PROTOCOL HAS BEEN APPROVED BY THE ETHICS COMMITTEE OF THE UNIVERSITY OF NAPLES FEDERICO II (NUMBER 283/21) AND IT WILL BE CONDUCTED IN ACCORDANCE WITH THE HELSINKI DECLARATION (FORTALEZA REVISION, 2013), THE GOOD CLINICAL PRACTICE STANDARDS (CPMP/ICH/135/95), THE ITALIAN DECREE-LAW 196/2003 REGARDING PERSONAL DATA AND THE EUROPEAN REGULATIONS ON THIS SUBJECT. THE STUDY HAS BEEN REGISTERED IN THE CLINICAL TRIALS PROTOCOL REGISTRATION SYSTEM. CLINICAL TRIAL REGISTRATION: [HTTP://CLINICALTRIALS.GOV], IDENTIFIER [NCT05119868].	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
6  6303  30 THE PUZZLE OF IMMUNE PHENOTYPES OF CHILDHOOD ASTHMA. ASTHMA REPRESENTS THE MOST COMMON CHRONIC CHILDHOOD DISEASE WORLDWIDE. WHEREAS PRESCHOOL CHILDREN PRESENT WITH WHEEZING TRIGGERED BY DIFFERENT FACTORS (MULTITRIGGER AND VIRAL WHEEZE), CLINICAL ASTHMA MANIFESTATION IN SCHOOL CHILDREN HAS PREVIOUSLY BEEN CLASSIFIED AS ALLERGIC AND NON-ALLERGIC ASTHMA. FOR BOTH, THE UNDERLYING IMMUNOLOGICAL MECHANISMS ARE NOT YET UNDERSTOOD IN DEPTH IN CHILDREN. TREATMENT IS STILL PRESCRIBED REGARDLESS OF UNDERLYING MECHANISMS, AND CHILDREN ARE NOT ALWAYS TREATED SUCCESSFULLY. THIS REVIEW SUMMARIZES RECENT KEY FINDINGS ON THE COMPLEX MECHANISMS OF THE DEVELOPMENT AND MANIFESTATION OF CHILDHOOD ASTHMA. WHEREAS TRADITIONAL CLASSIFICATION OF CHILDHOOD ASTHMA IS PRIMARILY BASED ON CLINICAL SYMPTOMS LIKE WHEEZING AND ATOPY, NOVEL APPROACHES TO SPECIFY ASTHMA PHENOTYPES ARE UNDER WAY AND FACE CHALLENGES SUCH AS INCLUDING THE STABILITY OF PHENOTYPES OVER TIME AND TRANSITION INTO ADULTHOOD. EPIDEMIOLOGICAL STUDIES ENCLOSE MORE INFORMATION ON THE PATIENT'S DISEASE HISTORY AND ENVIRONMENTAL INFLUENCES. LATEST STUDIES DEFINE ENDOTYPES BASED ON MOLECULAR AND CELLULAR MECHANISMS, FOR EXAMPLE DEFINING RISK AND PROTECTIVE SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) AND NEW IMMUNE PHENOTYPES, SHOWING PROMISING RESULTS. ALSO, REGULATORY T CELLS AND RECENTLY DISCOVERED T HELPER CELL SUBTYPES SUCH AS TH9 AND TH17 CELLS WERE SHOWN TO BE IMPORTANT FOR THE DEVELOPMENT OF ASTHMA. INNATE LYMPHOID CELLS (ILC) COULD PLAY A CRITICAL ROLE IN ASTHMA PATIENTS AS THEY PRODUCE DIFFERENT CYTOKINES ASSOCIATED WITH ASTHMA. EPIGENETIC FINDINGS SHOWED DIFFERENT ACETYLATION AND METHYLATION PATTERNS FOR CHILDREN WITH ALLERGIC AND NON-ALLERGIC ASTHMA. ON A POSTTRANSCRIPTIONAL LEVEL, MIRNAS ARE REGULATING FACTORS IDENTIFIED TO DIFFER BETWEEN ASTHMA PATIENTS AND HEALTHY CONTROLS AND ALSO INDICATE DIFFERENCES WITHIN ASTHMA PHENOTYPES. METABOLOMICS IS ANOTHER EXCITING CHAPTER IMPORTANT FOR ENDOTYPING ASTHMATIC CHILDREN. DESPITE THE DEVELOPMENT OF NEW BIOMARKERS AND THE DISCOVERY OF NEW IMMUNOLOGICAL MOLECULES, THE COMPLEX PUZZLE OF CHILDHOOD ASTHMA IS STILL FAR FROM BEING COMPLETED. ADDRESSING THE CURRENT CHALLENGES OF DISTINCT CLINICAL ASTHMA AND WHEEZE PHENOTYPES, INCLUDING THEIR STABILITY AND UNDERLYING ENDOTYPES, INVOLVES ADDRESSING THE INTERPLAY OF INNATE AND ADAPTIVE IMMUNE REGULATORY MECHANISMS IN LARGE, INTERDISCIPLINARY COHORTS.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
7  4063  34 MATERNAL AND CHILDHOOD ASTHMA: RISK FACTORS, INTERACTIONS, AND RAMIFICATIONS. ASTHMA IS EMERGING AS A PREMIER EXAMPLE OF A HEALTH RISK THAT CAN LARGELY BE MOLDED BY THE STATUS OF THE MOTHER AND THE ENVIRONMENTAL CONDITIONS ENCOUNTERED DURING SENSITIVE WINDOWS OF PRENATAL AND EARLY CHILDHOOD DEVELOPMENT. WHILE GENETIC BACKGROUND, ALLERGIC STATUS OF PARENTS, AND PREDISPOSITION FOR ATOPY AND INFLAMMATION PLAY A ROLE, EARLY-LIFE ENVIRONMENTAL CONDITIONS CAN COMPLETELY ALTER THE COURSE OF IMMUNE AND RESPIRATORY SYSTEM DEVELOPMENT. ENVIRONMENTALLY INDUCED ALTERATIONS THAT (1) MAINTAIN THE TH2 BIAS SEEN DURING GESTATION, (2) BLOCK THE MATURATION OF INNATE IMMUNE CELLS AND (3) CREATE INFLAMMATORY DYSFUNCTION IN THE INFANT PROVIDE THE FOUNDATION FOR CHILDHOOD ASTHMA. NO SINGLE RISK FACTOR CAN FULLY EXPLAIN THE INCREASED PREVALENCE OF ASTHMA IN RECENT DECADES BUT IT IS ASSUMED THAT THE RAPID INCREASE IS DUE TO ENVIRONMENTAL AND/OR EPIGENETIC CHANGES. WELL-ESTABLISHED AND SUSPECTED ENVIRONMENTAL RISK FACTORS COVER ALL CATEGORIES OF EARLY LIFE INTERACTIONS FROM DIET, EXPOSURE TO ENVIRONMENTAL CONTAMINANTS AND DRUGS, MATERNAL AND NEONATAL INFECTIONS, HYGIENE, TIMING OF VACCINATIONS AND EVEN THE MODE OF BIRTH DELIVERY. BECAUSE ASTHMA IS CONNECTED TO THE RISK OF SEVERAL COMORBID CHRONIC CONDITIONS, THE BENEFIT OF ASTHMA RISK REDUCTION AND PREVENTION IS GREATER THAN INITIALLY MAY BE APPARENT. THIS REVIEW DISCUSSES STRATEGIES TO OPTIMIZE PREVENTATIVE AND THERAPEUTIC OPTIONS ACROSS LIFE STAGES.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
8   300  32 AIR POLLUTION AND INDOOR SETTINGS. INDOOR ENVIRONMENTS CONTRIBUTE SIGNIFICANTLY TO TOTAL HUMAN EXPOSURE TO AIR POLLUTANTS, AS PEOPLE SPEND MOST OF THEIR TIME INDOORS. HOUSEHOLD AIR POLLUTION (HAP) RESULTING FROM COOKING WITH POLLUTING ("DIRTY") FUELS, WHICH INCLUDE COAL, KEROSENE, AND BIOMASS (WOOD, CHARCOAL, CROP RESIDUES, AND ANIMAL MANURE) IS A GLOBAL ENVIRONMENTAL HEALTH PROBLEM. INDOOR POLLUTANTS ARE GASES, PARTICULATES, TOXINS, AND MICROORGANISMS AMONG OTHERS, THAT CAN HAVE AN IMPACT ESPECIALLY ON THE HEALTH OF CHILDREN AND ADULTS THROUGH A COMBINATION OF DIFFERENT MECHANISMS ON OXIDATIVE STRESS AND GENE ACTIVATION, EPIGENETIC, CELLULAR, AND IMMUNOLOGICAL SYSTEMS. AIR POLLUTION IS A MAJOR RISK FACTOR AND CONTRIBUTOR TO MORBIDITY AND MORTALITY FROM MAJOR CHRONIC DISEASES. CHILDREN ARE SIGNIFICANTLY AFFECTED BY THE IMPACT OF THE ENVIRONMENT DUE TO BIOLOGICAL IMMATURITY, PRENATAL AND POSTNATAL LUNG DEVELOPMENT. POOR AIR QUALITY HAS BEEN RELATED TO AN INCREASED PREVALENCE OF CLINICAL MANIFESTATIONS OF ALLERGIC ASTHMA AND RHINITIS. HEALTH PROFESSIONALS SHOULD INCREASE THEIR ROLE IN MANAGING THE EXPOSURE OF CHILDREN AND ADULTS TO AIR POLLUTION WITH BETTER METHODS OF CARE, PREVENTION, AND COLLECTIVE ACTION. INTERVENTIONS TO REDUCE HOUSEHOLD POLLUTANTS MAY PROMOTE HEALTH AND CAN BE ACHIEVED WITH EDUCATION, COMMUNITY, AND HEALTH PROFESSIONAL INVOLVEMENT.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
9  1553  34 DNA METHYLATION LEVELS ASSOCIATED WITH RACE AND CHILDHOOD ASTHMA SEVERITY. OBJECTIVE: ASTHMA IS A COMMON CHRONIC CHILDHOOD DISEASE WORLDWIDE. SOCIOECONOMIC STATUS, GENETIC PREDISPOSITION AND ENVIRONMENTAL FACTORS CONTRIBUTE TO ITS INCIDENCE AND SEVERITY. A DISPROPORTIONATE NUMBER OF CHILDREN WITH ASTHMA ARE ECONOMICALLY DISADVANTAGED AND LIVE IN SUBSTANDARD HOUSING WITH POTENTIAL INDOOR ENVIRONMENTAL EXPOSURES SUCH AS COCKROACHES, DUST MITES, RODENTS AND MOLDS. THESE EXPOSURES MAY MANIFEST THROUGH EPIGENETIC MECHANISMS THAT CAN LEAD TO CHANGES IN RELEVANT GENE EXPRESSION. WE EXAMINED THE ASSOCIATION OF GLOBAL DNA METHYLATION LEVELS WITH SOCIOECONOMIC STATUS, ASTHMA SEVERITY AND RACE/ETHNICITY. METHODS: WE MEASURED GLOBAL DNA METHYLATION IN PERIPHERAL BLOOD OF CHILDREN WITH ASTHMA ENROLLED IN THE KANSAS CITY SAFE AND HEALTHY HOMES PROGRAM. INCLUSION CRITERIA INCLUDED RESIDING IN THE SAME HOME FOR A MINIMUM OF 4 DAYS PER WEEK AND TOTAL FAMILY INCOME OF LESS THAN 80% OF THE KANSAS CITY MEDIAN FAMILY INCOME. DNA METHYLATION LEVELS WERE QUANTIFIED BY AN IMMUNOASSAY THAT ASSESSED THE PERCENTAGE OF 5-METHYLCYTOSINE. RESULTS: OUR RESULTS INDICATE THAT OVERALL, AFRICAN AMERICAN CHILDREN HAD HIGHER LEVELS OF GLOBAL DNA METHYLATION THAN CHILDREN OF OTHER RACES/ETHNICITIES (P = 0.029). THIS DIFFERENCE WAS MORE PRONOUNCED WHEN SOCIOECONOMIC STATUS AND ASTHMA SEVERITY WERE COUPLED WITH RACE/ETHNICITY (P = 0.042) WHERE LOW-INCOME, AFRICAN AMERICAN CHILDREN WITH PERSISTENT ASTHMA HAD SIGNIFICANTLY ELEVATED METHYLATION LEVELS RELATIVE TO OTHER RACES/ETHNICITIES IN THE SAME CONTEXT (P = 0.006, HEDGES G = 1.14). CONCLUSION: OUR STUDY DEMONSTRATES A SIGNIFICANT INTERACTION EFFECT AMONG GLOBAL DNA METHYLATION LEVELS, ASTHMA SEVERITY, RACE/ETHNICITY, AND SOCIOECONOMIC STATUS.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
10   362  30 AMBIENT AIR POLLUTION IMPAIRS REGULATORY T-CELL FUNCTION IN ASTHMA. BACKGROUND: ASTHMA IS THE MOST FREQUENT CHRONIC DISEASE IN CHILDREN, AND CHILDREN ARE AT HIGH RISK FOR ADVERSE HEALTH CONSEQUENCES ASSOCIATED WITH AMBIENT AIR POLLUTION (AAP) EXPOSURE. REGULATORY T (TREG) CELLS ARE SUPPRESSORS OF IMMUNE RESPONSES INVOLVED IN ASTHMA PATHOGENESIS. TREG-CELL IMPAIRMENT IS ASSOCIATED WITH INCREASED DNA METHYLATION OF FORKHEAD BOX TRANSCRIPTION FACTOR 3 (FOXP3), A KEY TRANSCRIPTION FACTOR IN TREG-CELL ACTIVITY. BECAUSE AAP EXPOSURE CAN INDUCE EPIGENETIC CHANGES, WE HYPOTHESIZED THAT TREG-CELL FUNCTION WOULD BE IMPAIRED BY AAP, ALLOWING AMPLIFICATION OF AN INFLAMMATORY RESPONSE. OBJECTIVES: TO ASSESS WHETHER EXPOSURE TO AAP LED TO HYPERMETHYLATION OF THE FOXP3 GENE, CAUSING IMPAIRED TREG-CELL SUPPRESSION AND WORSENED ASTHMA SYMPTOM SCORES. METHODS: CHILDREN WITH AND WITHOUT ASTHMA FROM FRESNO, CALIF (HIGH POLLUTION, FRESNO ASTHMA GROUP [FA], N = 71, AND FRESNO NON ASTHMATIC GROUP, N = 30, RESPECTIVELY), AND FROM STANFORD, CALIF (LOW POLLUTION, STANFORD ASTHMA GROUP, N = 40, AND STANFORD NON ASTHMATIC GROUP, N = 40), WERE ENROLLED IN A CROSS-SECTIONAL STUDY. PERIPHERAL BLOOD TREG CELLS WERE USED IN FUNCTIONAL AND EPIGENETIC STUDIES. ASTHMA OUTCOMES WERE ASSESSED BY GLOBAL INITIATIVE IN ASTHMA SCORE. RESULTS: FRESNO ASTHMA GROUP TREG-CELL SUPPRESSION WAS IMPAIRED AND FA TREG-CELL CHEMOTAXIS WERE REDUCED COMPARED WITH OTHER GROUPS (P </= .05). TREG-CELL DYSFUNCTION WAS ASSOCIATED WITH MORE PRONOUNCED DECREASES IN ASTHMA GLOBAL INITIATIVE IN ASTHMA SCORE IN FA VERSUS THE STANFORD ASTHMA GROUP. FOXP3 WAS DECREASED IN FA COMPARED WITH THE FRESNO NON ASTHMATIC GROUP (P </= .05). FA ALSO CONTAINED SIGNIFICANTLY HIGHER LEVELS OF METHYLATION AT THE FOXP3 LOCUS (P </= .05). CONCLUSION: INCREASED EXPOSURE TO AAP IS ASSOCIATED WITH HYPERMETHYLATION OF THE FOXP3 LOCUS, IMPAIRING TREG-CELL FUNCTION AND INCREASING ASTHMA MORBIDITY. AAP COULD PLAY A ROLE IN MEDIATING EPIGENETIC CHANGES IN TREG CELLS, WHICH MAY WORSEN ASTHMA BY AN IMMUNE MECHANISM.	2010	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
11  2605  22 EPIGENETICS-A POTENTIAL MEDIATOR BETWEEN AIR POLLUTION AND PRETERM BIRTH. PRETERM BIRTH IS A MAJOR CAUSE OF INFANT MORBIDITY AND MORTALITY AND A POTENTIAL RISK FACTOR FOR ADULT CHRONIC DISEASE. WITH OVER 15 MILLION INFANTS BORN PRETERM WORLDWIDE EACH YEAR, PRETERM BIRTH POSES A GLOBAL HEALTH CONCERN. THERE IS A POSSIBLE ASSOCIATION BETWEEN AIR POLLUTION AND PRETERM BIRTH, THOUGH STUDIES HAVE BEEN INCONSISTENT, LIKELY DUE TO VARIATION IN STUDY DESIGN. HOW AIR POLLUTION INDUCES HEALTH EFFECTS IS UNCERTAIN; HOWEVER, STUDIES HAVE REPEATEDLY DEMONSTRATED THE EFFECTS OF AIR POLLUTION ON EPIGENETIC MODIFICATIONS. MORE RECENT EVIDENCE SUGGESTS THAT EPIGENETICS MAY, IN TURN, BE LINKED TO PRETERM BIRTH. DISCOVERY OF ENVIRONMENTALLY MODIFIABLE EPIGENETIC PROCESSES CONNECTED TO PRETERM BIRTH MAY HELP TO IDENTIFY WOMEN AT RISK OF PRETERM BIRTH, AND ULTIMATELY LEAD TO DEVELOPMENT OF NEW PRETERM BIRTH PREVENTION MEASURES.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
12  5085  23 PILOT STUDY OF ABSOLUTE TELOMERE LENGTHS IN PRETERM INFANTS. BACKGROUND: ANNUALLY, APPROXIMATELY 15 MILLION BABIES ARE BORN PRETERM (<37 WEEKS GESTATIONAL AGE) GLOBALLY. IN THE NEONATAL INTENSIVE CARE UNIT (NICU) ENVIRONMENT, INFANTS ARE EXPOSED TO REPEATED STRESSFUL OR PAINFUL PROCEDURES AS PART OF ROUTINE LIFESAVING CARE. THESE PROCEDURES HAVE BEEN ASSOCIATED WITH EPIGENETIC ALTERATIONS THAT MAY LEAD TO AN INCREASED RISK OF NEURODEVELOPMENTAL DISORDERS. TELOMERE LENGTH HAS BEEN NEGATIVELY ASSOCIATED WITH ADVERSE LIFE EXPERIENCES IN STUDIES OF ADULTS. OBJECTIVES: THIS PILOT STUDY AIMED TO DESCRIBE TELOMERE LENGTH IN A SAMPLE OF PRETERM INFANTS AT NICU DISCHARGE AND EXAMINE ANY ASSOCIATIONS WITH PAIN, FEEDING METHOD, AND NEURODEVELOPMENT. METHODS: THIS DESCRIPTIVE PILOT STUDY SAMPLE INCLUDES BASELINE ABSOLUTE TELOMERE LENGTH (ATL) OF 36 PRETERM INFANTS IMMEDIATELY PRIOR TO DISCHARGE. QUANTITATIVE POLYMERASE CHAIN REACTION WAS USED TO DETERMINE ATL. INFANT DEMOGRAPHICS, PAIN/STRESS, TYPE OF FEEDING, ANTIBIOTIC USE, NEURODEVELOPMENT, AND BUCCAL SWAB DATA WERE COLLECTED. DESCRIPTIVE DATA ANALYSIS WAS USED TO DESCRIBE THE TELOMERE LENGTH USING GRAPHS. RESULTS: AMONG OUR PRETERM INFANT SAMPLES, THE MEAN ATL WAS FAR GREATER THAN THE AVERAGE ADULT TELOMERE LENGTH. ALTHOUGH NO SIGNIFICANT ASSOCIATIONS WERE FOUND BETWEEN ATL AND PAIN, FEEDING METHOD, AND NEURODEVELOPMENT, A TREND BETWEEN SEX WAS NOTED WHERE MALE TELOMERE LENGTHS WERE SHORTER THAN FEMALES AS THEY AGED. DISCUSSION: THIS IS ONE OF FEW STUDIES TO EVALUATE PRETERM INFANT TELOMERE LENGTH. ALTHOUGH OTHER RESEARCHERS HAVE USED RELATIVE TELOMERE LENGTH, WE USED THE MORE ACCURATE ATL. WE FOUND NONSIGNIFICANT SHORTER TELOMERE LENGTHS AMONG MALES. ADDITIONAL LARGE-SCALE, LONGITUDINAL STUDIES ARE NEEDED TO BETTER IDENTIFY THE PREDICTORS OF TELOMERE LENGTH AT THE TIME OF DISCHARGE FROM NICU.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
13  1058  25 CLINICAL MEASURES OF ALLOSTATIC LOAD IN CHILDREN AND ADOLESCENTS WITH FOOD ALLERGY, DEPRESSION, OR ANXIETY. PURPOSE: SUSTAINED HIGH STRESS EXPOSURE RESULTS IN CHRONIC ACTIVATION OF THE STRESS RESPONSE SYSTEM, DYSREGULATED STRESS RESPONSES, HIGH ALLOSTATIC LOAD, AND POOR LATER-LIFE HEALTH. CHILDREN AND ADOLESCENTS WITH CHRONIC HEALTH CONDITIONS FACE STRESSORS RELATED TO THEIR CONDITION IN ADDITION TO THOSE TYPICAL OF CHILDHOOD AND ADOLESCENCE, PLACING THEM AT RISK OF HIGH ALLOSTATIC LOAD. THE PURPOSE OF THIS SECONDARY ANALYSIS WAS TO EXAMINE WHETHER YOUTH WITH CHRONIC HEALTH CONDITIONS DIFFER FROM CONTROLS ON CLINICAL MEASURES OF ALLOSTATIC LOAD. DESIGN AND METHODS: A SECONDARY ANALYSIS OF TWO DATASETS, THE ELECTRONIC HEALTH RECORD OF A TERTIARY CHILDREN'S HOSPITAL AND DATA FROM THE SURVEY OF THE HEALTH OF WISCONSIN, COMPARED YOUTH WITH CHRONIC HEALTH CONDITIONS TO CONTROLS ON CLINICAL MEASURES OF ALLOSTATIC LOAD. ADDITIONAL ANALYSES EXPLORED WHETHER PARENTAL STRESS AND MENTAL HEALTH INFLUENCED THESE RELATIONSHIPS. RESULTS: ANALYSES IDENTIFIED DIFFERENCES IN BMI, BLOOD PRESSURE, AND WAIST CIRCUMFERENCE BETWEEN YOUTH WITH FOOD ALLERGY, ANXIETY, OR DEPRESSION, AND CONTROLS. THESE RELATIONSHIPS DIFFERED FOR MALES AND FEMALES AND FOR THOSE WITH COMORBID MENTAL AND PHYSICAL CONDITIONS, AND WERE INFLUENCED BY PARENT STRESS AND MENTAL HEALTH. CONCLUSIONS: RESULTS SUPPORT FUTURE STUDIES EXPLORING WHETHER HIGH STRESS IN YOUTH WITH CHRONIC HEALTH CONDITIONS LEADS TO INCREASED ALLOSTATIC LOAD. INCORPORATING BIOMARKERS AS WELL AS GENETIC AND EPIGENETIC FACTORS WILL PROVIDE CRITICAL INSIGHTS. PRACTICE IMPLICATIONS: YOUTH WITH MENTAL AND PHYSICAL CHCS MAY BE AT INCREASED RISK OF HIGH ALLOSTATIC LOAD, REFLECTED IN CLINICAL MEASURES OF METABOLISM, AND SHOULD HAVE REGULAR ASSESSMENTS OF THEIR METABOLIC HEALTH.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
14   363  33 AMBIENT AIR POLLUTION: HEALTH HAZARDS TO CHILDREN. AMBIENT AIR POLLUTION IS PRODUCED BY SOURCES INCLUDING VEHICULAR TRAFFIC, COAL-FIRED POWER PLANTS, HYDRAULIC FRACTURING, AGRICULTURAL PRODUCTION, AND FOREST FIRES. IT CONSISTS OF PRIMARY POLLUTANTS GENERATED BY COMBUSTION AND SECONDARY POLLUTANTS FORMED IN THE ATMOSPHERE FROM PRECURSOR GASES. AIR POLLUTION CAUSES AND EXACERBATES CLIMATE CHANGE, AND CLIMATE CHANGE WORSENS HEALTH EFFECTS OF AIR POLLUTION. INFANTS AND CHILDREN ARE UNIQUELY SENSITIVE TO AIR POLLUTION, BECAUSE THEIR ORGANS ARE DEVELOPING AND THEY HAVE HIGHER AIR PER BODY WEIGHT INTAKE. HEALTH EFFECTS LINKED TO AIR POLLUTION INCLUDE NOT ONLY EXACERBATIONS OF RESPIRATORY DISEASES BUT ALSO REDUCED LUNG FUNCTION DEVELOPMENT AND INCREASED ASTHMA INCIDENCE. ADDITIONAL OUTCOMES OF CONCERN INCLUDE PRETERM BIRTH, LOW BIRTH WEIGHT, NEURODEVELOPMENTAL DISORDERS, IQ LOSS, PEDIATRIC CANCERS, AND INCREASED RISKS FOR ADULT CHRONIC DISEASES. THESE EFFECTS ARE MEDIATED BY OXIDATIVE STRESS, CHRONIC INFLAMMATION, ENDOCRINE DISRUPTION, AND GENETIC AND EPIGENETIC MECHANISMS ACROSS THE LIFE SPAN. NATURAL EXPERIMENTS DEMONSTRATE THAT WITH INITIATIVES SUCH AS INCREASED USE OF PUBLIC TRANSPORTATION, BOTH AIR QUALITY AND COMMUNITY HEALTH IMPROVE. SIMILARLY, THE CLEAN AIR ACT HAS IMPROVED AIR QUALITY, ALTHOUGH EXPOSURE INEQUITIES PERSIST. OTHER EFFECTIVE STRATEGIES FOR REDUCING AIR POLLUTION INCLUDE ENDING RELIANCE ON COAL, OIL, AND GAS; REGULATING INDUSTRIAL EMISSIONS; REDUCING EXPOSURE WITH ATTENTION TO PROXIMITY OF RESIDENCES, SCHOOLS, AND CHILD CARE FACILITIES TO TRAFFIC; AND A GREATER AWARENESS OF THE AIR QUALITY INDEX. THIS POLICY REVIEWS BOTH SHORT- AND LONG-TERM HEALTH CONSEQUENCES OF AMBIENT AIR POLLUTION, ESPECIALLY IN RELATION TO DEVELOPMENTAL EXPOSURES. IT EXAMINES INDIVIDUAL, COMMUNITY, AND LEGISLATIVE STRATEGIES TO MITIGATE AIR POLLUTION.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
15  4612  21 NEONATAL PAIN AND COMT VAL158MET GENOTYPE IN RELATION TO SEROTONIN TRANSPORTER (SLC6A4) PROMOTER METHYLATION IN VERY PRETERM CHILDREN AT SCHOOL AGE. CHILDREN BORN VERY PRETERM ARE EXPOSED TO REPEATED NEONATAL PROCEDURES THAT INDUCE PAIN AND STRESS DURING HOSPITALIZATION IN THE NEONATAL INTENSIVE CARE UNIT (NICU). THE COMT VAL158MET GENOTYPE IS INVOLVED WITH PAIN SENSITIVITY, AND EARLY LIFE STRESS IS IMPLICATED IN ALTERED EXPRESSION OF METHYLATION OF THE SEROTONIN TRANSPORTER. WE EXAMINED: (1) WHETHER METHYLATION OF THE SEROTONIN TRANSPORTER GENE (SLC6A4) PROMOTER DIFFERS BETWEEN VERY PRETERM CHILDREN AND FULL-TERM CONTROLS AT SCHOOL AGE, (2) RELATIONSHIPS WITH CHILD BEHAVIOR PROBLEMS, AND (3) WHETHER THE EXTENT OF NEONATAL PAIN EXPOSURE INTERACTS WITH THE COMT VAL158MET GENOTYPE TO PREDICT SLC6A4 METHYLATION AT 7 YEARS IN THE VERY PRETERM CHILDREN. WE EXAMINED THE ASSOCIATIONS BETWEEN THE COMT GENOTYPES, NEONATAL PAIN EXPOSURE (ADJUSTED FOR NEONATAL CLINICAL CONFOUNDERS), SLC6A4 METHYLATION AND BEHAVIOR PROBLEMS. VERY PRETERM CHILDREN HAD SIGNIFICANTLY HIGHER METHYLATION AT 7/10 CPG SITES IN THE SLC6A4 PROMOTER COMPARED TO FULL-TERM CONTROLS AT 7 YEARS. NEONATAL PAIN (ADJUSTED FOR CLINICAL CONFOUNDERS) WAS SIGNIFICANTLY ASSOCIATED WITH TOTAL CHILD BEHAVIOR PROBLEMS ON THE CHILD BEHAVIOR CHECKLIST (CBCL) QUESTIONNAIRE (ADJUSTED FOR CONCURRENT STRESSORS AND 5HTTLPR GENOTYPE) (P = 0.035). CBCL TOTAL PROBLEMS WAS SIGNIFICANTLY ASSOCIATED WITH GREATER SLC6A4 METHYLATION IN VERY PRETERM CHILDREN (P = 0.01). NEONATAL PAIN (ADJUSTED FOR CLINICAL CONFOUNDERS) AND COMT MET/MET GENOTYPE WERE ASSOCIATED WITH SLC6A4 PROMOTER METHYLATION IN VERY PRETERM CHILDREN AT 7 YEARS (P = 0.001). THESE FINDINGS PROVIDE EVIDENCE THAT BOTH GENETIC PREDISPOSITION AND EARLY ENVIRONMENT NEED TO BE CONSIDERED IN UNDERSTANDING SUSCEPTIBILITY FOR DEVELOPING BEHAVIORAL PROBLEMS IN THIS VULNERABLE POPULATION.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
16  4062  32 MATERNAL AND CHILD HEALTH SERVICES AND AN INTEGRATED, LIFE-CYCLE APPROACH TO THE PREVENTION OF NON-COMMUNICABLE DISEASES. DESCRIBED AS THE 'INVISIBLE EPIDEMIC', NON-COMMUNICABLE DISEASES (NCDS) ARE THE WORLD'S LEADING CAUSE OF DEATH. MOST ARE CAUSED BY PREVENTABLE FACTORS, INCLUDING POOR DIET, TOBACCO USE, HARMFUL USE OF ALCOHOL AND PHYSICAL INACTIVITY. DIABETES, CANCER AND CARDIOVASCULAR AND CHRONIC LUNG DISEASES WERE RESPONSIBLE FOR 38 MILLION (68%) OF GLOBAL DEATHS IN 2012. SINCE 1990, PROPORTIONATE NCD MORTALITY HAS INCREASED SUBSTANTIALLY AS POPULATIONS HAVE AGED AND COMMUNICABLE DISEASES DECLINE. THE MAJORITY OF NCD DEATHS, ESPECIALLY PREMATURE NCD DEATHS (<70 YEARS, 82%), OCCUR IN LOW-INCOME AND MIDDLE-INCOME COUNTRIES, AND AMONG POOR COMMUNITIES WITHIN THEM. ADDRESSING NCDS IS RECOGNISED AS CENTRAL TO THE POST-2015 AGENDA; ACCORDINGLY, NCDS HAVE A SPECIFIC OBJECTIVE AND TARGET IN THE SUSTAINABLE DEVELOPMENT GOALS. WHILE DEATHS FROM NCDS OCCUR MAINLY IN ADULTHOOD, MANY HAVE THEIR ORIGINS IN EARLY LIFE, INCLUDING THROUGH EPIGENETIC MECHANISMS OPERATING BEFORE CONCEPTION. GOOD NUTRITION BEFORE CONCEPTION AND INTERVENTIONS AIMED AT PREVENTING NCDS DURING THE FIRST 1000 DAYS (FROM CONCEPTION TO AGE 2 YEARS), CHILDHOOD AND ADOLESCENCE MAY BE MORE COST-EFFECTIVE THAN MANAGING ESTABLISHED NCDS IN LATER LIFE WITH COSTLY TESTS AND DRUGS. FOLLOWING A LIFE-COURSE APPROACH, MATERNAL AND CHILD HEALTH INTERVENTIONS, BEFORE DELIVERY AND DURING CHILDHOOD AND ADOLESCENCE, CAN PREVENT NCDS AND SHOULD INFLUENCE GLOBAL HEALTH AND SOCIOECONOMIC DEVELOPMENT. THIS PAPER DESCRIBES HOW SUCH AN APPROACH MAY BE PURSUED, INCLUDING THROUGH THE ENGAGEMENT OF NON-HEALTH SECTORS. IT ALSO EMPHASISES EVALUATING AND DOCUMENTING RELATED INITIATIVES TO UNDERWRITE SYSTEMATIC AND EVIDENCE-BASED CROSS-SECTORAL ENGAGEMENT ON NCD PREVENTION IN THE FUTURE.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
17  4256  27 METHYLOMIC MARKERS OF PERSISTENT CHILDHOOD ASTHMA: A LONGITUDINAL STUDY OF ASTHMA-DISCORDANT MONOZYGOTIC TWINS. BACKGROUND: ASTHMA IS THE MOST COMMON CHRONIC INFLAMMATORY DISORDER IN CHILDREN. THE AETIOLOGY OF ASTHMA PATHOLOGY IS COMPLEX AND HIGHLY HETEROGENEOUS, INVOLVING THE INTERPLAY BETWEEN GENETIC AND ENVIRONMENTAL RISK FACTORS THAT IS HYPOTHESIZED TO INVOLVE EPIGENETIC PROCESSES. OUR AIM WAS TO EXPLORE WHETHER METHYLOMIC VARIATION IN EARLY CHILDHOOD IS ASSOCIATED WITH DISCORDANCE FOR ASTHMA SYMPTOMS WITHIN MONOZYGOTIC (MZ) TWIN PAIRS RECRUITED FROM THE ENVIRONMENTAL RISK (E-RISK) LONGITUDINAL TWIN STUDY. WE ALSO AIMED TO IDENTIFY DIFFERENCES IN DNA METHYLATION THAT ARE ASSOCIATED WITH ASTHMA THAT DEVELOPS IN CHILDHOOD AND PERSISTS INTO EARLY ADULTHOOD AS THESE MAY REPRESENT USEFUL PROGNOSTIC BIOMARKERS. RESULTS: WE EXAMINED GENOME-WIDE PATTERNS OF DNA METHYLATION IN BUCCAL CELL SAMPLES COLLECTED FROM 37 MZ TWIN PAIRS DISCORDANT FOR ASTHMA AT AGE 10. DNA METHYLATION AT INDIVIDUAL CPG SITES DEMONSTRATED SIGNIFICANT VARIABILITY WITHIN DISCORDANT MZ TWIN PAIRS WITH THE TOP-RANKED NOMINALLY SIGNIFICANT DIFFERENTIALLY METHYLATED POSITION (DMP) LOCATED IN THE HGSNAT GENE. WE STRATIFIED OUR ANALYSIS BY ASSESSING DNA METHYLATION DIFFERENCES IN A SUB-GROUP OF MZ TWIN PAIRS WHO REMAINED PERSISTENTLY DISCORDANT FOR ASTHMA AT AGE 18. THE TOP-RANKED NOMINALLY SIGNIFICANT DMP ASSOCIATED WITH PERSISTING ASTHMA IS LOCATED IN THE VICINITY OF THE HLX GENE, WHICH HAS BEEN PREVIOUSLY IMPLICATED IN CHILDHOOD ASTHMA. CONCLUSIONS: WE IDENTIFIED DNA METHYLATION DIFFERENCES ASSOCIATED WITH CHILDHOOD ASTHMA IN PERIPHERAL DNA SAMPLES FROM DISCORDANT MZ TWIN PAIRS. OUR DATA SUGGEST THAT DIFFERENCES IN DNA METHYLATION ASSOCIATED WITH CHILDHOOD ASTHMA WHICH PERSISTS INTO EARLY ADULTHOOD ARE DISTINCT FROM THOSE ASSOCIATED WITH ASTHMA WHICH REMITS.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
18  1956  28 EPIGENETIC AGE IN PERIPHERAL BLOOD AMONG CHILDREN, ADOLESCENT, AND ADULT SURVIVORS OF CHILDHOOD CANCER. IMPORTANCE: CERTAIN CANCER THERAPIES ARE RISK FACTORS FOR EPIGENETIC AGE ACCELERATION (EAA) AMONG SURVIVORS OF CHILDHOOD CANCER, AND EAA IS ASSOCIATED WITH CHRONIC HEALTH CONDITIONS (CHCS). HOWEVER, SMALL NUMBERS OF YOUNGER SURVIVORS (AGED <20 YEARS) PREVIOUSLY EVALUATED HAVE LIMITED THE ABILITY TO CALCULATE EAA AMONG THIS AGE GROUP. OBJECTIVE: TO EVALUATE THE CHANGE RATE OF EPIGENETIC AGE (EA) AND EAA IN YOUNGER COMPARED WITH OLDER SURVIVORS AND THE POSSIBLE ASSOCIATION OF EAA WITH EARLY-ONSET OBESITY (AGED <20 YEARS), SEVERITY/BURDEN OF CHCS, AND LATE MORTALITY (>5 YEARS FROM CANCER DIAGNOSIS). DESIGN, SETTING, AND PARTICIPANTS: STUDY PARTICIPANTS WERE FROM THE ST JUDE LIFETIME COHORT, INITIATED IN 2007 WITH ONGOING FOLLOW-UP. THE PRESENT STUDY WAS CONDUCTED FROM APRIL 17, 2022, TO MARCH 23, 2023. SURVIVORS IN THIS COHORT OF EUROPEAN ANCESTRY WITH DNA METHYLATION DATA WERE INCLUDED. CROSS-SECTIONAL ANNUAL CHANGES IN EA AND EAA WERE COMPARED ACROSS 5 DIFFERENT CHRONOLOGIC AGE GROUPS: AGE 0 TO 9 (CHILDREN), 10 TO 19 (ADOLESCENTS), 20 TO 34 (YOUNGER ADULTS), 35 TO 49 (MIDDLE-AGED ADULTS), AND GREATER THAN OR EQUAL TO 50 (OLDER ADULTS) YEARS. LOGISTIC REGRESSION EVALUATED THE ASSOCIATION BETWEEN EAA AND EARLY-ONSET OBESITY OR SEVERITY/BURDEN OF CHCS. COX PROPORTIONAL HAZARDS REGRESSION ASSESSED THE ASSOCIATION BETWEEN EAA AND LATE MORTALITY. MAIN OUTCOMES AND MEASURES: EARLY-ONSET OBESITY, SEVERITY/BURDEN OF CHCS (GRADED USING THE COMMON TERMINOLOGY CRITERIA FOR ADVERSE EVENTS (GRADE 1, MILD; 2, MODERATE; 3, SEVERE/DISABLING; 4, LIFE-THREATENING) AND WERE COMBINED INTO HIGH VS LOW SEVERITY/BURDEN BASED ON FREQUENCY AND GRADE), AND LATE MORTALITY WERE THE OUTCOMES BASED ON FOLLOW-UP UNTIL APRIL 2020. EXPANDED DNA METHYLATION PROFILING INCREASED THE NUMBER OF SURVIVORS YOUNGER THAN 20 YEARS (N = 690). EPIGENETIC AGE WAS CALCULATED PRIMARILY USING THE LEVINE CLOCK, AND EAA WAS DERIVED FROM LEAST SQUARES REGRESSION OF EA AGAINST CHRONOLOGIC AGE AND WAS STANDARDIZED TO A Z SCORE (LEVINE EEA). RESULTS: AMONG 2846 PARTICIPANTS (MEDIAN AGE, 30.3 [IQR, 9.3-41.5] YEARS; 53% MALES), THE CROSS-SECTIONAL ANNUAL CHANGE IN EA_LEVINE WAS HIGHER IN CHILDREN (1.63 YEARS) AND ADOLESCENTS (1.14 YEARS), AND THE ADJUSTED LEAST-SQUARES MEAN OF LEVINE EEA WAS LOWER IN CHILDREN (-0.22 YEARS) AND OLDER ADULTS (-1.70 YEARS). EACH 1-SD INCREASE IN LEVINE EEA WAS ASSOCIATED WITH INCREASED RISK OF DEVELOPING EARLY-ONSET OBESITY (ODDS RATIO [OR], 1.46; 95% CI, 1.19-1.78), HIGH SEVERITY/BURDEN OF CHCS (OR, 1.13; 95% CI, 1.03-1.24), AND LATE MORTALITY (HAZARD RATIO, 1.75; 95% CI, 1.35-2.26). CONCLUSIONS AND RELEVANCE: THE FINDINGS OF THIS STUDY SUGGEST THAT EAA MEASURED IN CHILDREN AND ADOLESCENT SURVIVORS OF CHILDHOOD CANCER IS ASSOCIATED WITH EARLY-ONSET OBESITY, SEVERITY/BURDEN OF ALL CHCS, AND LATE MORTALITY. EVALUATING EAA MAY HELP IDENTIFY SURVIVORS OF CHILDHOOD CANCER AT INCREASED RISK FOR EARLY-ONSET OBESITY, MORBIDITY IN GENERAL, AND MORTALITY.	2023	

19  5875  20 SYMPTOMS OF ALLERGIC RHINITIS IN WOMEN DURING EARLY PREGNANCY ARE ASSOCIATED WITH HIGHER PREVALENCE OF ALLERGIC RHINITIS IN THEIR OFFSPRING. BACKGROUND: EPIGENETIC CONTROL OF GENE EXPRESSION PROFILES IS A UBIQUITOUS MECHANISM DURING CELL DIFFERENTIATION, ORGANOGENESIS AND CHRONIC INFLAMMATORY REACTIONS. RECENT STUDIES HAVE SHOWN THAT ALLERGEN EXPOSURE DURING VERY EARLY PREGNANCY INCREASES BRONCHIAL HYPERSENSITIVITY IN OFFSPRING IN A MURINE MODEL OF BRONCHIAL ASTHMA. HOWEVER, NO SUCH PHENOMENA WERE REPORTED IN HUMANS. IN THE PRESENT STUDY, THE ROLE OF EPIGENETIC CONTROL IN THE ONSET OF ALLERGIC DISEASES WAS INVESTIGATED. METHODS: A TOTAL OF 400 PAIRS OF MOTHERS WITH PHYSICIAN-DIAGNOSED ALLERGIC RHINITIS (AR) AND THEIR OFFSPRING (AGE 7-18 MONTHS) WHO PARTICIPATED IN A LARGE-SCALE MEDICAL CHECK-UP WERE ENROLLED IN THIS RETROSPECTIVE COHORT STUDY. FAMILY HISTORY OF ALLERGIC DISEASES AND THE PRESENCE OR ABSENCE OF AR SYMPTOMS DURING PREGNANCY WERE INQUIRED ABOUT USING A SELF-ANSWERED QUESTIONNAIRE. A LOGISTIC REGRESSION MODEL ADJUSTED FOR AGE, GENDER, BIRTH MONTH AND FATHER'S HISTORY OF ALLERGIC DISEASES WAS STATISTICALLY ANALYZED. RESULTS: OFFSPRING WHOSE MOTHERS HAD ANY AR SYMPTOMS DURING EARLY PREGNANCY SHOWED A SIGNIFICANTLY HIGHER ADJUSTED ODDS RATIO FOR THE ONSET OF AR IN OFFSPRING THAN THOSE WHOSE MOTHERS HAD NO SYMPTOMS DURING PREGNANCY (ADJUSTED ODDS RATIO: 6.26, P = 0.036). HOWEVER, THE SYMPTOMS OF AR DURING LATE PREGNANCY SHOWED NO EFFECTS ON THE ODDS RATIO. IN CONTRAST, THE PRESENCE OR ABSENCE OF AR SYMPTOMS DURING EARLY OR LATE PREGNANCY SHOWED NO ASSOCIATION WITH THE PREVALENCE OF FOOD ALLERGY, ATOPIC DERMATITIS OR ASTHMA IN OFFSPRING. CONCLUSIONS: OUR RESULTS SUGGEST THE PRESENCE OF POSSIBLE EPIGENETIC MECHANISMS REGULATING THE ONSET OF AR IN HUMANS PRESUMABLY THROUGH INCREASED ORGAN-SPECIFIC HYPERSENSITIVITY.	2007	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
20  1746  14 EARLY LIFE ADVERSITY, PUBERTAL TIMING, AND EPIGENETIC AGE ACCELERATION IN ADULTHOOD. BACKGROUND: GIVEN ASSOCIATIONS LINKING EARLY LIFE ADVERSITY, PUBERTAL TIMING, AND BIOLOGICAL AGING, WE EXAMINED THE DIRECT AND INDIRECT EFFECTS OF EARLY LIFE TRAUMA ON ADULT BIOLOGICAL AGING (VIA AGE OF MENARCHE). METHODS: PARTICIPANTS WERE PREMENOPAUSAL WOMEN (N = 183). PATH MODELS EVALUATED WHETHER EARLY LIFE TRAUMA PREDICTED EARLY PUBERTAL TIMING AND THEREBY, ADULT EPIGENETIC AGE ACCELERATION (INDEXED VIA FOUR EPIGENETIC CLOCKS: HORVATH DNAM AGE, HANNUM DNAM AGE, DNAM PHENOAGE, AND DNAM GRIMAGE). SECONDARY ANALYSES EXPLORED THE EFFECTS OF TYPE OF TRAUMA (ABUSE AND NEGLECT) AND ADULT CHRONIC STRESS STATUS (CAREGIVER OF CHILD WITH AUTISM AND NON-CAREGIVER). RESULTS: EARLY LIFE TRAUMA AND EARLIER AGE AT MENARCHE INDEPENDENTLY PREDICTED ACCELERATED AGING BASED ON ONE OF THE FOUR EPIGENETIC CLOCKS, DNAM GRIMAGE, THOUGH EARLY LIFE TRAUMA WAS NOT ASSOCIATED WITH AGE OF MENARCHE. CHILDHOOD ABUSE, BUT NOT NEGLECT, PREDICTED FASTER EPIGENETIC AGING; RESULTS DID NOT DIFFER BY CHRONIC STRESS STATUS. CONCLUSIONS: EARLY TRAUMA AND EARLY MENARCHE APPEAR TO EXERT INDEPENDENT EFFECTS ON DNAM GRIMAGE, WHICH HAS BEEN SHOWN TO BE THE STRONGEST EPIGENETIC PREDICTOR OF MORTALITY RISK. THIS STUDY IDENTIFIES A POTENTIAL CORRELATE OR DETERMINANT OF ACCELERATED EPIGENETIC AGING-MENARCHEAL AGE. FUTURE RESEARCH SHOULD ADDRESS THE LIMITATIONS OF THIS STUDY BY USING RACIALLY DIVERSE SAMPLES.	2021