1  2985 140 GENETIC DIVERSITY FOR NITROGEN USE EFFICIENCY IN ARABIDOPSIS THALIANA. THE PLASTICITY OF PLANT GROWTH RESPONSE TO DIFFERING NITRATE AVAILABILITY RENDERS THE IDENTIFICATION OF BIOMARKERS DIFFICULT, BUT ALLOWS ACCESS TO GENETIC FACTORS AS TOOLS TO MODULATE ROOT SYSTEMS TO A WIDE RANGE OF SOIL CONDITIONS. NITROGEN AVAILABILITY IS A MAJOR DETERMINANT OF CROP YIELD. WHILE THE APPLICATION OF FERTILISER SUBSTANTIALLY INCREASES THE YIELD ON POOR SOILS, IT ALSO CAUSES NITRATE POLLUTION OF WATER RESOURCES AND HIGH COSTS FOR FARMERS. INCREASING NITROGEN USE EFFICIENCY IN CROP PLANTS IS A NECESSARY STEP TO IMPLEMENT LOW-INPUT AGRICULTURAL SYSTEMS. WE EXPLOITED THE GENETIC DIVERSITY PRESENT IN THE WORLDWIDE ARABIDOPSIS THALIANA POPULATION TO STUDY ADAPTIVE GROWTH PATTERNS AND CHANGES IN GENE EXPRESSION ASSOCIATED WITH CHRONIC LOW NITRATE STRESS, TO IDENTIFY BIOMARKERS ASSOCIATED WITH GOOD PLANT PERFORMANCE UNDER LOW NITRATE AVAILABILITY. ARABIDOPSIS ACCESSIONS WERE GROWN ON AGAR PLATES WITH LIMITED AND SUFFICIENT SUPPLY OF NITRATE TO MEASURE ROOT SYSTEM ARCHITECTURE AS WELL AS SHOOT AND ROOT FRESH WEIGHT. DIFFERENTIAL GENE EXPRESSION WAS DETERMINED USING AFFYMETRIX ATH1 ARRAYS. WE SHOW THAT THE RESPONSE TO DIFFERING NITRATE AVAILABILITY IS HIGHLY VARIABLE IN ARABIDOPSIS ACCESSIONS. ANALYSES OF VEGETATIVE SHOOT GROWTH AND ROOT SYSTEM ARCHITECTURE IDENTIFIED ACCESSION-SPECIFIC REACTION MODES TO COPE WITH LIMITED NITRATE AVAILABILITY. TRANSCRIPTION AND EPIGENETIC FACTORS WERE IDENTIFIED AS IMPORTANT PLAYERS IN THE ADAPTION TO LIMITED NITROGEN IN A GLOBAL GENE EXPRESSION ANALYSIS. FIVE NITRATE-RESPONSIVE GENES EMERGED AS POSSIBLE BIOMARKERS FOR NUE IN ARABIDOPSIS. THE PLASTICITY OF PLANT GROWTH IN RESPONSE TO DIFFERING NITRATE AVAILABILITY IN THE SUBSTRATE RENDERS THE IDENTIFICATION OF MORPHOLOGICAL AND MOLECULAR FEATURES AS BIOMARKERS DIFFICULT, BUT AT THE SAME TIME ALLOWS ACCESS TO A MULTITUDE OF GENETIC FACTORS WHICH CAN BE USED AS TOOLS TO MODULATE AND ADJUST ROOT SYSTEMS TO A WIDE RANGE OF SOIL CONDITIONS.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
2  3487  36 IDENTIFICATION OF DIFFERENTIALLY METHYLATED SITES WITH WEAK METHYLATION EFFECTS. DEOXYRIBONUCLEIC ACID (DNA) METHYLATION IS AN EPIGENETIC ALTERATION CRUCIAL FOR REGULATING STRESS RESPONSES. IDENTIFYING LARGE-SCALE DNA METHYLATION AT SINGLE NUCLEOTIDE RESOLUTION IS MADE POSSIBLE BY WHOLE GENOME BISULFITE SEQUENCING. AN ESSENTIAL TASK FOLLOWING THE GENERATION OF BISULFITE SEQUENCING DATA IS TO DETECT DIFFERENTIALLY METHYLATED CYTOSINES (DMCS) AMONG TREATMENTS. MOST STATISTICAL METHODS FOR DMC DETECTION DO NOT CONSIDER THE DEPENDENCY OF METHYLATION PATTERNS ACROSS THE GENOME, THUS POSSIBLY INFLATING TYPE I ERROR. FURTHERMORE, SMALL SAMPLE SIZES AND WEAK METHYLATION EFFECTS AMONG DIFFERENT PHENOTYPE CATEGORIES MAKE IT DIFFICULT FOR THESE STATISTICAL METHODS TO ACCURATELY DETECT DMCS. TO ADDRESS THESE ISSUES, THE WAVELET-BASED FUNCTIONAL MIXED MODEL (WFMM) WAS INTRODUCED TO DETECT DMCS. TO FURTHER EXAMINE THE PERFORMANCE OF WFMM IN DETECTING WEAK DIFFERENTIAL METHYLATION EVENTS, WE USED BOTH SIMULATED AND EMPIRICAL DATA AND COMPARE WFMM PERFORMANCE TO A POPULAR DMC DETECTION TOOL METHYLKIT. ANALYSES OF SIMULATED DATA THAT REPLICATED THE EFFECTS OF THE HERBICIDE GLYPHOSATE ON DNA METHYLATION IN ARABIDOPSIS THALIANA SHOW THAT WFMM RESULTS IN HIGHER SENSITIVITY AND SPECIFICITY IN DETECTING DMCS COMPARED TO METHYLKIT, ESPECIALLY WHEN THE METHYLATION DIFFERENCES AMONG PHENOTYPE GROUPS ARE SMALL. MOREOVER, THE PERFORMANCE OF WFMM IS ROBUST WITH RESPECT TO SMALL SAMPLE SIZES, MAKING IT PARTICULARLY ATTRACTIVE CONSIDERING THE CURRENT HIGH COSTS OF BISULFITE SEQUENCING. ANALYSIS OF EMPIRICAL ARABIDOPSIS THALIANA DATA UNDER VARYING GLYPHOSATE DOSAGES, AND THE ANALYSIS OF MONOZYGOTIC (MZ) TWINS WHO HAVE DIFFERENT PAIN SENSITIVITIES-BOTH DATASETS HAVE WEAK METHYLATION EFFECTS OF <1%-SHOW THAT WFMM CAN IDENTIFY MORE RELEVANT DMCS RELATED TO THE PHENOTYPE OF INTEREST THAN METHYLKIT. DIFFERENTIALLY METHYLATED REGIONS (DMRS) ARE GENOMIC REGIONS WITH DIFFERENT DNA METHYLATION STATUS ACROSS BIOLOGICAL SAMPLES. DMRS AND DMCS ARE ESSENTIALLY THE SAME CONCEPTS, WITH THE ONLY DIFFERENCE BEING HOW METHYLATION INFORMATION ACROSS THE GENOME IS SUMMARIZED. IF METHYLATION LEVELS ARE DETERMINED BY GROUPING NEIGHBORING CYTOSINE SITES, THEN THEY ARE DMRS; IF METHYLATION LEVELS ARE CALCULATED BASED ON SINGLE CYTOSINES, THEY ARE DMCS.	2018	
                                                                                                                                                                                                                                                                                                                                                                                    
3   840  31 CHEMOENZYMATIC LABELING OF DNA METHYLATION PATTERNS FOR SINGLE-MOLECULE EPIGENETIC MAPPING. DNA METHYLATION, SPECIFICALLY, METHYLATION OF CYTOSINE (C) NUCLEOTIDES AT THE 5-CARBON POSITION (5-MC), IS THE MOST STUDIED AND SIGNIFICANT EPIGENETIC MODIFICATION. HERE WE DEVELOPED A CHEMOENZYMATIC PROCEDURE TO FLUORESCENTLY LABEL NON-METHYLATED CYTOSINES IN CPG CONTEXT, ALLOWING EPIGENETIC PROFILING OF SINGLE DNA MOLECULES SPANNING HUNDREDS OF THOUSANDS OF BASE PAIRS. WE USED A CPG METHYLTRANSFERASE WITH A SYNTHETIC S-ADENOSYL-L-METHIONINE COFACTOR ANALOG TO TRANSFER AN AZIDE TO CYTOSINES INSTEAD OF THE NATURAL METHYL GROUP. A FLUOROPHORE WAS THEN CLICKED ONTO THE DNA, REPORTING ON THE AMOUNT AND POSITION OF NON-METHYLATED CPGS. WE FOUND THAT LABELING EFFICIENCY WAS INCREASED UP TO 2-FOLD BY THE ADDITION OF A NUCLEOSIDASE, PRESUMABLY BY DEGRADING THE INACTIVE BY-PRODUCT OF THE COFACTOR AFTER LABELING, PREVENTING ITS INHIBITORY EFFECT. WE USED THE METHOD TO DETERMINE THE DECLINE IN GLOBAL DNA METHYLATION IN A CHRONIC LYMPHOCYTIC LEUKEMIA PATIENT AND THEN PERFORMED WHOLE-GENOME METHYLATION MAPPING OF THE MODEL PLANT ARABIDOPSIS THALIANA. OUR GENOME MAPS SHOW HIGH CONCORDANCE WITH PUBLISHED BISULFITE SEQUENCING METHYLATION MAPS. ALTHOUGH MAPPING RESOLUTION IS LIMITED BY OPTICAL DETECTION TO 500-1000 BP, THE LABELED DNA MOLECULES PRODUCED BY THIS APPROACH ARE HUNDREDS OF THOUSANDS OF BASE PAIRS LONG, ALLOWING ACCESS TO LONG REPETITIVE AND STRUCTURALLY VARIABLE GENOMIC REGIONS.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
4  5330  33 PUTATIVE EPIGENETIC BIOMARKERS OF STRESS IN RED BLOOD CELLS OF CHICKENS REARED ACROSS DIFFERENT BIOMES. PRODUCTION ANIMALS ARE CONSTANTLY SUBJECTED TO EARLY ADVERSE ENVIRONMENTAL CONDITIONS THAT INFLUENCE THE ADULT PHENOTYPE AND PRODUCE EPIGENETIC EFFECTS. CPG DINUCLEOTIDE METHYLATION IN RED BLOOD CELLS (RBC) COULD BE A USEFUL EPIGENETIC BIOMARKER TO IDENTIFY ANIMALS SUBJECTED TO CHRONIC STRESS IN THE PRODUCTION ENVIRONMENT. HERE WE COMPARED A REDUCED FRACTION OF THE RBC METHYLOME OF CHICKENS EXPOSED TO SOCIAL ISOLATION TO NON-EXPOSED. THESE EXPERIMENTS WERE PERFORMED IN TWO DIFFERENT LOCATIONS: BRAZIL AND SWEDEN. THE AIM WAS TO IDENTIFY STRESS-ASSOCIATED DNA METHYLATION PROFILES IN RBC ACROSS THESE POPULATIONS, IN SPITE OF THE VARIABLE CONDITIONS TO WHICH BIRDS ARE EXPOSED IN EACH FACILITY AND THEIR DIFFERENT LINEAGES. BIRDS WERE INCREASINGLY EXPOSED TO A SOCIAL ISOLATION TREATMENT, COMBINED WITH FOOD AND WATER DEPRIVATION, AT RANDOM PERIODS OF THE DAY FROM WEEKS 1-4 AFTER HATCHING. WE THEN COLLECTED THE RBC DNA FROM INDIVIDUALS AND COMPARED A REDUCED FRACTION OF THEIR METHYLOME BETWEEN THE EXPERIMENTAL GROUPS USING TWO BIOINFORMATIC APPROACHES TO IDENTIFY DIFFERENTIALLY METHYLATED REGIONS (DMRS): ONE USING FIXED-SIZE WINDOWS AND ANOTHER THAT PRESELECTED DIFFERENTIAL PEAKS WITH MACS2. THREE LEVELS OF SIGNIFICANCE WERE USED (P </= 0.05, P </= 0.005, AND P </= 0.0005) TO IDENTIFY DMRS BETWEEN EXPERIMENTAL GROUPS, WHICH WERE THEN USED FOR DIFFERENT ANALYSES. WITH BOTH OF THE APPROACHES MORE DMRS REACHED THE DEFINED SIGNIFICANCE THRESHOLDS IN BR INDIVIDUALS COMPARED TO SW. HOWEVER, MORE DMRS HAD HIGHER FOLD CHANGE VALUES IN SW COMPARED TO BR INDIVIDUALS. INTERESTINGLY, CHRZ WAS ENRICHED ABOVE EXPECTANCY FOR THE PRESENCE OF DMRS. ADDITIONALLY, WHEN ANALYZING THE LOCATIONS OF THESE DMRS IN RELATION TO THE TRANSCRIPTION STARTING SITE (TSS), WE FOUND THREE PEAKS WITH HIGH DMR PRESENCE: 10 KB UPSTREAM, THE TSS ITSELF, AND 20-40 KB DOWNSTREAM. INTERESTINGLY, THESE PEAKS HAD DMRS WITH A HIGH PRESENCE (>50%) OF SPECIFIC TRANSCRIPTION FACTOR BINDING SITES. THREE OVERLAPPING DMRS WERE FOUND BETWEEN THE BR AND SW POPULATION USING THE MOST RELAXED P-VALUE (P </= 0.05). WITH THE MOST STRINGENT P-VALUE (P </= 0.0005), WE FOUND 7 AND 4 DMRS BETWEEN TREATMENTS IN THE BR AND SW POPULATIONS, RESPECTIVELY. THIS STUDY IS THE FIRST APPROXIMATION TO IDENTIFY EPIGENETIC BIOMARKERS OF LONG-TERM EXPOSURE TO STRESS IN DIFFERENT LINEAGES OF PRODUCTION ANIMALS.	2020	
                                                                                                                                                                                                                                             
5  3159  32 GLYPHOSATE PRIMES MAMMARY CELLS FOR TUMORIGENESIS BY REPROGRAMMING THE EPIGENOME IN A TET3-DEPENDENT MANNER. THE ACKNOWLEDGMENT THAT POLLUTANTS MIGHT INFLUENCE THE EPIGENOME RAISES SERIOUS CONCERNS REGARDING THEIR LONG-TERM IMPACT ON THE DEVELOPMENT OF CHRONIC DISEASES. THE HERBICIDE GLYPHOSATE HAS BEEN SCRUTINIZED FOR AN IMPACT ON CANCER INCIDENCE, BUT REPORTS DEMONSTRATE THE DIFFICULTY OF LINKING ESTIMATES OF EXPOSURE AND RESPONSE ANALYSIS. AN APPROACH TO BETTER APPREHEND A POTENTIAL RISK IMPACT FOR CANCER IS TO FOLLOW A SYNERGISTIC APPROACH, AS CANCER RARELY OCCURS IN RESPONSE TO ONE RISK FACTOR. THE KNOWN INFLUENCE OF GLYPHOSATE ON ESTROGEN-REGULATED PATHWAY MAKES IT A LOGICAL TARGET OF INVESTIGATION IN BREAST CANCER RESEARCH. WE HAVE USED NONNEOPLASTIC MCF10A CELLS IN A REPEATED GLYPHOSATE EXPOSURE PATTERN OVER 21 DAYS. GLYPHOSATE TRIGGERED A SIGNIFICANT REDUCTION IN DNA METHYLATION, AS SHOWN BY THE LEVEL OF 5-METHYLCYTOSINE DNA; HOWEVER, IN CONTRAST TO STRONG DEMETHYLATING AGENT AND CANCER PROMOTER UP PEPTIDE, GLYPHOSATE-TREATED CELLS DID NOT LEAD TO TUMOR DEVELOPMENT. WHEREAS UP ACTS THROUGH A DNMT1/PCNA/UHRF1 PATHWAY, GLYPHOSATE TRIGGERED INCREASED ACTIVITY OF TEN-ELEVEN TRANSLOCATION (TET)3. COMBINING GLYPHOSATE WITH ENHANCED EXPRESSION OF MICRORNA (MIR) 182-5P ASSOCIATED WITH BREAST CANCER INDUCED TUMOR DEVELOPMENT IN 50% OF MICE. CULTURE OF PRIMARY CELLS FROM RESECTED TUMORS REVEALED A LUMINAL B (ER+/PR-/HER2-) PHENOTYPE IN RESPONSE TO GLYPHOSATE-MIR182-5P EXPOSURE WITH SENSITIVITY TO TAMOXIFEN AND INVASIVE AND MIGRATORY POTENTIALS. TUMOR DEVELOPMENT COULD BE PREVENTED EITHER BY SPECIFICALLY INHIBITING MIR 182-5P OR BY TREATING GLYPHOSATE-MIR 182-5P-CELLS WITH DIMETHYLOXALLYL GLYCINE, AN INHIBITOR OF TET PATHWAY. LOOKING FOR POTENTIAL EPIGENETIC MARKS OF TET-MEDIATED GENE REGULATION UNDER GLYPHOSATE EXPOSURE, WE IDENTIFIED MTRNR2L2 AND DUX4 GENES, THE HYPOMETHYLATION OF WHICH WAS SUSTAINED EVEN AFTER STOPPING GLYPHOSATE EXPOSURE FOR 6 WEEKS. OUR FINDINGS REVEAL THAT LOW PRESSURE BUT SUSTAINED DNA HYPOMETHYLATION OCCURRING VIA THE TET PATHWAY PRIMES CELLS FOR ONCOGENIC RESPONSE IN THE PRESENCE OF ANOTHER POTENTIAL RISK FACTOR. THESE RESULTS WARRANT FURTHER INVESTIGATION OF GLYPHOSATE-MEDIATED BREAST CANCER RISK.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
6   502  36 ASSOCIATION OF ARSENIC EXPOSURE WITH WHOLE BLOOD DNA METHYLATION: AN EPIGENOME-WIDE STUDY OF BANGLADESHI ADULTS. BACKGROUND: ARSENIC EXPOSURE AFFECTS [FORMULA: SEE TEXT] PEOPLE WORLDWIDE, INCLUDING [FORMULA: SEE TEXT] IN BANGLADESH. ARSENIC EXPOSURE INCREASES THE RISK OF CANCER AND OTHER CHRONIC DISEASES, AND ONE POTENTIAL MECHANISM OF ARSENIC TOXICITY IS EPIGENETIC DYSREGULATION. OBJECTIVE: WE ASSESSED ASSOCIATIONS BETWEEN ARSENIC EXPOSURE AND GENOME-WIDE DNA METHYLATION MEASURED AT BASELINE AMONG 396 BANGLADESHI ADULTS PARTICIPATING IN THE HEALTH EFFECTS OF ARSENIC LONGITUDINAL STUDY (HEALS) WHO WERE EXPOSED BY DRINKING NATURALLY CONTAMINATED WELL WATER. METHODS: METHYLATION IN WHOLE BLOOD DNA WAS MEASURED AT [FORMULA: SEE TEXT] USING THE ILLUMINA INFINIUMMETHYLATIONEPIC (EPIC) ARRAY. TO ASSESS ASSOCIATIONS BETWEEN ARSENIC EXPOSURE AND CPG METHYLATION, WE USED LINEAR REGRESSION MODELS ADJUSTED FOR COVARIATES AND SURROGATE VARIABLES (SVS) (CAPTURING UNKNOWN TECHNICAL AND BIOLOGIC FACTORS). WE ATTEMPTED REPLICATION AND CONDUCTED A META-ANALYSIS USING AN INDEPENDENT DATASET OF [FORMULA: SEE TEXT] FROM 400 BANGLADESHI INDIVIDUALS WITH ARSENICAL SKIN LESIONS. RESULTS: WE IDENTIFIED 34 CPGS ASSOCIATED WITH [FORMULA: SEE TEXT] CREATININE-ADJUSTED URINARY ARSENIC [[FORMULA: SEE TEXT]]. SIXTEEN OF THESE CPGS ANNOTATED TO THE [FORMULA: SEE TEXT] ARRAY, AND 10 ASSOCIATIONS WERE REPLICATED ([FORMULA: SEE TEXT]). THE TOP TWO CPGS ANNOTATED UPSTREAM OF THE ABR GENE (CG01912040, CG10003262 ). ALL URINARY ARSENIC-ASSOCIATED CPGS WERE ALSO ASSOCIATED WITH ARSENIC CONCENTRATION MEASURED IN DRINKING WATER ([FORMULA: SEE TEXT]). META-ANALYSIS ([FORMULA: SEE TEXT] SAMPLES) IDENTIFIED 221 URINARY ARSENIC-ASSOCIATED CPGS ([FORMULA: SEE TEXT]). THE ARSENIC-ASSOCIATED CPGS FROM THE META-ANALYSIS WERE ENRICHED IN NON-CPG ISLANDS AND SHORES ([FORMULA: SEE TEXT]) AND DEPLETED IN PROMOTER REGIONS ([FORMULA: SEE TEXT]). AMONG THE ARSENIC-ASSOCIATED CPGS ([FORMULA: SEE TEXT]), WE OBSERVED SIGNIFICANT ENRICHMENT OF GENES ANNOTATING TO THE REACTIVE OXYGEN SPECIES PATHWAY, INFLAMMATORY RESPONSE, AND TUMOR NECROSIS FACTOR [FORMULA: SEE TEXT] ([FORMULA: SEE TEXT]) SIGNALING VIA NUCLEAR FACTOR KAPPA-B ([FORMULA: SEE TEXT]) HALLMARKS ([FORMULA: SEE TEXT]). CONCLUSIONS: THE NOVEL AND REPLICABLE ASSOCIATIONS BETWEEN ARSENIC EXPOSURE AND DNA METHYLATION AT SPECIFIC CPGS OBSERVED IN THIS WORK SUGGEST THAT EPIGENETIC ALTERATIONS SHOULD BE FURTHER INVESTIGATED AS POTENTIAL MEDIATORS IN ARSENIC TOXICITY AND AS BIOMARKERS OF EXPOSURE AND EFFECT IN EXPOSED POPULATIONS. HTTPS://DOI.ORG/10.1289/EHP3849.	2019	
                                                                                                            
7  4607  28 NEIGHBORHOOD ENVIRONMENT AND DNA METHYLATION: IMPLICATIONS FOR CARDIOVASCULAR DISEASE RISK. EXPOSURE TO CHRONIC STRESS SUCH AS LIVING IN DISADVANTAGED NEIGHBORHOODS HAS BEEN RELATED TO CARDIOVASCULAR DISEASE (CVD). CHRONIC STRESS MAY INCREASE THE RISK FOR CVD BY INCREASING LEVELS OF SYSTEMIC INFLAMMATION (E.G., HIGHER LEVELS OF PRO-INFLAMMATORY CYTOKINES). DIFFERENTIAL DNA METHYLATION OF INFLAMMATION-RELATED CANDIDATE GENES IS ALSO RELATED TO HIGHER RISK FOR CVD. THUS, THE PURPOSE OF THIS REVIEW WAS TO EXAMINE THE ASSOCIATION OF NEIGHBORHOOD DISADVANTAGE WITH DNA METHYLATION. A SEARCH OF LITERATURE WAS CONDUCTED USING SCOPUS, CINAHL, PUBMED, MEDLINE, AND EMBASE DATABASES. THE KEYWORDS NEIGHBORHOOD, NEIGHBORHOOD DISORDER, NEIGHBORHOOD CRIME, NEIGHBORHOOD VIOLENCE, NEIGHBORHOOD SAFETY, BUILT ENVIRONMENT, AND HOUSING VACANCY WERE COMBINED WITH THE KEYWORDS DNA METHYLATION AND EPIGENETICS. FIVE STUDIES WERE INCLUDED IN THIS REVIEW (N = 3 ADULT BLOOD SAMPLES AND N = 2 FETAL BLOOD SAMPLES). FOUR OF THE FIVE STUDIES REPORTED AN ASSOCIATION OF NEIGHBORHOOD SOCIOECONOMIC STATUS, SOCIAL ENVIRONMENT, AND CRIME WITH EITHER GLOBAL OR GENE-SPECIFIC DNA METHYLATION. ONLY TWO STUDIES EXAMINED THE ASSOCIATION OF NEIGHBORHOOD DISADVANTAGE WITH INFLAMMATION-RELATED CANDIDATE GENES. ONE OF THESE STUDIES FOUND A SIGNIFICANT ASSOCIATION OF NEIGHBORHOOD SOCIOECONOMIC DISADVANTAGE AND SOCIAL ENVIRONMENT WITH DNA METHYLATION IN INFLAMMATION-RELATED CANDIDATE GENES. THUS, DATA ARE LIMITED ON THE ASSOCIATION BETWEEN NEIGHBORHOOD DISADVANTAGE AND DNA METHYLATION OF INFLAMMATION-RELATED CANDIDATE GENES, AS WELL AS GENES IN OTHER POTENTIAL MECHANISTIC PATHWAYS INCLUDING PSYCHOSOCIAL STRESS, TOXIN RESPONSE, AND ADIPOSITY. FUTURE STUDIES SHOULD EXAMINE THESE ASSOCIATIONS AND THE POTENTIAL EPIGENETIC MECHANISMS BY WHICH NEIGHBORHOOD DISADVANTAGE INCREASES THE RISK FOR CVD.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
8  4256  30 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
9    70  28 A METHOD TO DETECT DIFFERENTIALLY METHYLATED LOCI WITH NEXT-GENERATION SEQUENCING. EPIGENETIC CHANGES, ESPECIALLY DNA METHYLATION AT CPG LOCI HAVE IMPORTANT IMPLICATIONS IN CANCER AND OTHER COMPLEX DISEASES. WITH THE DEVELOPMENT OF NEXT-GENERATION SEQUENCING (NGS), IT IS FEASIBLE TO GENERATE DATA TO INTERROGATE THE DIFFERENCE IN METHYLATION STATUS FOR GENOME-WIDE LOCI USING CASE-CONTROL DESIGN. HOWEVER, A PROPER AND EFFICIENT STATISTICAL TEST IS LACKING. THERE ARE SEVERAL CHALLENGES. FIRST, UNLIKE METHYLATION EXPERIMENTS USING MICROARRAYS, WHERE THERE IS ONE MEASURE OF METHYLATION FOR ONE INDIVIDUAL AT A PARTICULAR CPG SITE, HERE WE HAVE THE COUNTS OF METHYLATION ALLELE AND UNMETHYLATION ALLELE FOR EACH INDIVIDUAL. SECOND, DUE TO THE NATURE OF SAMPLE PREPARATION, THE MEASURED METHYLATION REFLECTS THE METHYLATION STATUS OF A MIXTURE OF CELLS INVOLVED IN SAMPLE PREPARATION. THEREFORE, THE UNDERLYING DISTRIBUTION OF THE MEASURED METHYLATION LEVEL IS UNKNOWN, AND A ROBUST TEST IS MORE DESIRABLE THAN PARAMETRIC APPROACH. THIRD, CURRENTLY NGS MEASURES METHYLATION AT OVER 2 MILLION CPG SITES. ANY STATISTICAL TESTS HAVE TO BE COMPUTATIONALLY EFFICIENT IN ORDER TO BE APPLIED TO THE NGS DATA. TAKING THESE CHALLENGES INTO ACCOUNT, WE PROPOSE A TEST FOR DIFFERENTIAL METHYLATION BASED ON CLUSTERED DATA ANALYSIS BY MODELING THE METHYLATION COUNTS. WE PERFORMED SIMULATIONS TO SHOW THAT IT IS ROBUST UNDER SEVERAL DISTRIBUTIONS FOR THE MEASURED METHYLATION LEVELS. IT HAS GOOD POWER AND IS COMPUTATIONALLY EFFICIENT. FINALLY, WE APPLY THE TEST TO OUR NGS DATA ON CHRONIC LYMPHOCYTIC LEUKEMIA. THE RESULTS INDICATE THAT IT IS A PROMISING AND PRACTICAL TEST.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
10  4252  28 METHYLOME CHANGES ASSOCIATED WITH FUNCTIONAL MOVEMENT/CONVERSION DISORDER: INFLUENCE OF BIOLOGICAL SEX AND CHILDHOOD ABUSE EXPOSURE. EPIGENETIC CHANGES, SUCH AS DNA METHYLATION (DNAM), MAY REPRESENT AN IMPORTANT MECHANISM IMPLICATED IN THE ETIOPATHOGENESIS OF FUNCTIONAL MOVEMENT/CONVERSION DISORDER (FMD). HERE, WE AIMED TO IDENTIFY METHYLOMIC VARIATIONS IN A CASE-CONTROL COHORT OF FMD AND TO UNCOVER SPECIFIC EPIGENETIC SIGNATURES ASSOCIATED WITH FEMALE SEX AND CHILDHOOD ABUSE, TWO KEY RISK FACTORS FOR FMD AND OTHER FUNCTIONAL NEUROLOGICAL DISORDERS. GENOME-WIDE DNAM ANALYSIS WAS PERFORMED FROM PERIPHERAL BLOOD IN 57 PATIENTS WITH FMD AND 47 HEALTHY CONTROLS WITH AND WITHOUT CHILDHOOD ABUSE. USING PRINCIPAL COMPONENT ANALYSIS, WE EXAMINED THE ASSOCIATION OF PRINCIPAL COMPONENTS WITH FMD STATUS IN ABUSED AND NON-ABUSED INDIVIDUALS, IN THE ENTIRE STUDY SAMPLE AND IN FEMALE SUBJECTS ONLY. NEXT, WE USED ENRICHMENT PATHWAY ANALYSIS TO INVESTIGATE THE BIOLOGICAL SIGNIFICANCE OF DNAM CHANGES AND EXPLORED DIFFERENCES IN METHYLATION LEVELS OF GENES ANNOTATED TO THE TOP ENRICHED BIOLOGICAL PATHWAYS SHARED ACROSS COMPARISONS. WE FOUND THAT FMD WAS ASSOCIATED WITH DNAM VARIATION ACROSS THE GENOME AND IDENTIFIED A COMMON EPIGENETIC 'SIGNATURE' ENRICHED FOR BIOLOGICAL PATHWAYS IMPLICATED IN CHRONIC STRESS AND CHRONIC PAIN. HOWEVER, METHYLATION LEVELS OF GENES INCLUDED IN THE TOP TWO SHARED PATHWAYS HARDLY OVERLAPPED, SUGGESTING THAT TRANSCRIPTIONAL PROFILES MAY DIFFER AS A FUNCTION OF CHILDHOOD ABUSE EXPOSURE AND SEX AMONG SUBJECTS WITH FMD. THIS STUDY IS UNIQUE IN PROVIDING GENOME-WIDE EVIDENCE OF DNAM CHANGES IN FMD AND IN INDICATING A POTENTIAL MECHANISM LINKING CHILDHOOD ABUSE EXPOSURE AND FEMALE SEX TO DIFFERENCES IN FMD PATHOPHYSIOLOGY. FUTURE STUDIES ARE NEEDED TO REPLICATE OUR FINDINGS IN INDEPENDENT COHORTS.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
11  5113  30 POPULATION-LEVEL IMPACTS OF PESTICIDE-INDUCED CHRONIC EFFECTS ON INDIVIDUALS DEPEND MORE ON ECOLOGY THAN TOXICOLOGY. THE CURRENT METHOD FOR ASSESSING LONG-TERM RISK OF PESTICIDES TO MAMMALS IN THE EU IS BASED ON THE INDIVIDUAL RATHER THAN THE POPULATION-LEVEL AND LACKS ECOLOGICAL REALISM. HENCE THERE IS LITTLE POSSIBILITY FOR REGULATORY AUTHORITIES TO INCREASE ECOLOGICAL REALISM AND UNDERSTANDING OF RISKS AT THE POPULATION-LEVEL. HERE WE DEMONSTRATE HOW, USING ABM MODELLING, ASSESSMENTS AT THE POPULATION-LEVEL CAN BE OBTAINED EVEN FOR A PESTICIDE WITH COMPLEX LONG-TERM EFFECTS SUCH AS EPIGENETIC TRANSMISSION OF REPRODUCTIVE DEPRESSION. BY OBJECTIVELY FITTING NONLINEAR MODELS TO THE SIMULATION OUTPUTS IT WAS POSSIBLE TO COMPARE POPULATION DEPRESSION AND RECOVERY RATES FOR A RANGE OF SCENARIOS IN WHICH TOXICITY AND EXPOSURE FACTORS WERE VARIED. THE SYSTEM WAS DIFFERENTIALLY SENSITIVE TO THE VARIOUS FACTORS, BUT VOLE ECOLOGY AND BEHAVIOUR WERE AT LEAST AS IMPORTANT PREDICTORS OF POPULATION-LEVEL EFFECTS AS TOXICOLOGY. THIS EMPHASISES THE NEED FOR GREATER FOCUS ON ANIMAL ECOLOGY IN RISK ASSESSMENTS.	2009	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
12  2622  30 EPIGENOME-WIDE ASSOCIATION STUDIES IN ASTHMA: A SYSTEMATIC REVIEW. OBJECTIVE: ASTHMA IS A COMMON CHRONIC RESPIRATORY AIRWAY DISEASE INFLUENCED BY ENVIRONMENTAL FACTORS AND POSSIBLY THEIR INTERACTION WITH THE HUMAN GENOME CAUSING EPIGENETIC CHANGES. EPIGENOME-WIDE ASSOCIATION STUDIES (EWAS) HAVE MAINLY INVESTIGATED DNA METHYLATION AND ITS ASSOCIATION WITH DISEASE OR TRAITS, EXPOSURE FACTORS OR GENE EXPRESSION. THIS SYSTEMATIC REVIEW AIMED TO IDENTIFY ALL EWAS ASSESSING DIFFERENTIALLY METHYLATED SITES ASSOCIATED WITH ASTHMA IN HUMANS. DESIGN: STRUCTURED SYSTEMATIC LITERATURE SEARCH FOLLOWING PRISMA GUIDELINES, NEWCASTLE-OTTAWA SCALE (NOS) FOR COHORT STUDIES WAS USED FOR BIAS ASSESSMENT. DATA SOURCES: WE SEARCHED PUBMED AND EMBASE DATABASES FROM 2005 TO 2019. ELIGIBILITY CRITERIA: EPIGENOME-WIDE ASSOCIATION STUDIES TESTING ASSOCIATION BETWEEN DIFFERENTIAL METHYLATION AND ASTHMA IN HUMANS. RESULTS: OVERALL, WE IDENTIFIED 16 EWAS STUDIES COMPLYING WITH OUR SEARCH CRITERIA. TWELVE STUDIES WERE CONDUCTED ON CHILDREN, AND 10 WERE CONDUCTED ON SAMPLE SIZES <150 SUBJECTS. FOUR HUNDRED AND NINETEEN CPGS WERE REPORTED IN CHILDREN STUDIES AFTER CORRECTION FOR MULTIPLE TESTING. IN THE ADULT STUDIES, THOUSANDS OF DIFFERENTIALLY METHYLATED SITES WERE IDENTIFIED. DIFFERENTIAL METHYLATION IN INFLAMMATORY-RELATED GENES CORRELATED WITH HIGHER LEVELS OF GENE EXPRESSIONS OF INFLAMMATORY MODULATORS IN ASTHMA. DIFFERENTIALLY METHYLATED GENES ASSOCIATED WITH ASTHMA INCLUDED SMAD3, SERPINC1, PROK1, IL13, RUNX3 AND TIGIT. FORTY-ONE CPGS WERE REPLICATED AT LEAST ONCE IN BLOOD SAMPLES, AND 28 CPGS WERE REPLICATED IN NASAL SAMPLES. CONCLUSION: ALTHOUGH MANY DIFFERENTIALLY METHYLATED CPGS IN GENES KNOWN TO BE INVOLVED IN ASTHMA HAVE BEEN IDENTIFIED IN EWAS TO DATE, WE CONCLUDE THAT FURTHER STUDIES OF LARGER SAMPLE SIZES AND ANALYSES OF DIFFERENTIAL METHYLATION BETWEEN DIFFERENT PHENOTYPES ARE NEEDED IN ORDER TO COMPREHENSIVELY EVALUATE THE ROLE OF EPIGENETIC FACTORS IN THE PATHOPHYSIOLOGY AND HETEROGENEITY OF ASTHMA, AND THE POTENTIAL CLINICAL UTILITY TO PREDICT OR CLASSIFY PATIENTS WITH ASTHMA.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
13  1436  28 DIFFERENTIAL METHYLATION OF THE TRPA1 PROMOTER IN PAIN SENSITIVITY. CHRONIC PAIN IS A GLOBAL PUBLIC HEALTH PROBLEM, BUT THE UNDERLYING MOLECULAR MECHANISMS ARE NOT FULLY UNDERSTOOD. HERE WE EXAMINE GENOME-WIDE DNA METHYLATION, FIRST IN 50 IDENTICAL TWINS DISCORDANT FOR HEAT PAIN SENSITIVITY AND THEN IN 50 FURTHER UNRELATED INDIVIDUALS. WHOLE-BLOOD DNA METHYLATION WAS CHARACTERIZED AT 5.2 MILLION LOCI BY MEDIP SEQUENCING AND ASSESSED LONGITUDINALLY TO IDENTIFY DIFFERENTIALLY METHYLATED REGIONS ASSOCIATED WITH HIGH OR LOW PAIN SENSITIVITY (PAIN DMRS). NINE META-ANALYSIS PAIN DMRS SHOW ROBUST EVIDENCE FOR ASSOCIATION (FALSE DISCOVERY RATE 5%) WITH THE STRONGEST SIGNAL IN THE PAIN GENE TRPA1 (P=1.2 X 10(-13)). SEVERAL PAIN DMRS SHOW LONGITUDINAL STABILITY CONSISTENT WITH SUSCEPTIBILITY EFFECTS, HAVE SIMILAR METHYLATION LEVELS IN THE BRAIN AND ALTERED EXPRESSION IN THE SKIN. OUR APPROACH IDENTIFIES EPIGENETIC CHANGES IN BOTH NOVEL AND ESTABLISHED CANDIDATE GENES THAT PROVIDE MOLECULAR INSIGHTS INTO PAIN AND MAY GENERALIZE TO OTHER COMPLEX TRAITS.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
14   101  30 A RAT METHYL-SEQ PLATFORM TO IDENTIFY EPIGENETIC CHANGES ASSOCIATED WITH STRESS EXPOSURE. AS GENOMES OF A WIDER VARIETY OF ANIMALS BECOME AVAILABLE, THERE IS AN INCREASING NEED FOR TOOLS THAT CAN CAPTURE DYNAMIC EPIGENETIC CHANGES IN THESE ANIMAL MODELS. THE RAT IS ONE PARTICULAR MODEL ANIMAL WHERE AN EPIGENETIC TOOL CAN COMPLEMENT MANY PHARMACOLOGICAL AND BEHAVIORAL STUDIES TO PROVIDE INSIGHTFUL MECHANISTIC INFORMATION. TO THIS END, WE ADAPTED THE SURESELECT TARGET CAPTURE SYSTEM (REFERRED TO AS METHYL-SEQ) FOR THE RAT, WHICH CAN ASSESS DNA METHYLATION LEVELS ACROSS THE RAT GENOME. THE RAT DESIGN TARGETED PROMOTERS, CPG ISLANDS, ISLAND SHORES, AND GC-RICH REGIONS FROM ALL REFSEQ GENES. TO IMPLEMENT THE PLATFORM ON A RAT EXPERIMENT, MALE SPRAGUE DAWLEY RATS WERE EXPOSED TO CHRONIC VARIABLE STRESS FOR 3 WEEKS, AFTER WHICH BLOOD SAMPLES WERE COLLECTED FOR GENOMIC DNA EXTRACTION. METHYL-SEQ LIBRARIES WERE CONSTRUCTED FROM THE RAT DNA SAMPLES BY SHEARING, ADAPTER LIGATION, TARGET ENRICHMENT, BISULFITE CONVERSION, AND MULTIPLEXING. LIBRARIES WERE SEQUENCED ON A NEXT-GENERATION SEQUENCING PLATFORM AND THE SEQUENCED READS WERE ANALYZED TO IDENTIFY DMRS BETWEEN DNA OF STRESSED AND UNSTRESSED RATS. TOP CANDIDATE DMRS WERE INDEPENDENTLY VALIDATED BY BISULFITE PYROSEQUENCING TO CONFIRM THE ROBUSTNESS OF THE PLATFORM. RESULTS DEMONSTRATE THAT THE RAT METHYL-SEQ PLATFORM IS A USEFUL EPIGENETIC TOOL THAT CAN CAPTURE METHYLATION CHANGES INDUCED BY EXPOSURE TO STRESS.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
15  5682  27 SHORT-TERM CHANGES IN GLOBAL METHYLATION AND HYDROXYMETHYLATION DURING ALCOHOL DETOXIFICATION. ALCOHOL DEPENDENCE IS A COMMON PUBLIC HEALTH PROBLEM AND EPIGENETICS MAY OFFER NEW ASPECTS IN UNDERSTANDING THE BIOLOGICAL AND GENETIC UNDERPINNINGS AND IMPROVE TREATMENT OF THIS COMPLEX DISEASE. SUPPOSEDLY, METHYLATION AND HYDROXYMETHYLATION ARE ALTERED IN BRAIN TISSUES AND IN SYNAPSE-RELATED GENES DUE TO CHRONIC ALCOHOL INTAKE AND DURING WITHDRAWAL. TO ASSESS POTENTIAL EPIGENETIC CHANGES AFTER CESSATION OF CHRONIC ALCOHOL INTAKE, WE COMPARED 23 ALCOHOL-DEPENDENT INDIVIDUALS DURING INPATIENT ALCOHOL DETOXIFICATION WITH 13 CAREFULLY MATCHED CONTROLS. BLOOD SAMPLES WERE TAKEN ON THE DAY OF ADMISSION, AFTER ONE AND AFTER TWO WEEKS AT THE END OF INPATIENT TREATMENT. GENOME-WIDE GLOBAL METHYLATION AND GLOBAL DNA HYDROXYMETHYLATION WERE COMPARED ACROSS GROUPS. THERE WERE SIGNIFICANT DIFFERENCES IN GLOBAL METHYLATION ACROSS TIME FROM ADMISSION TO ONE AND TWO WEEKS OF INPATIENT WITHDRAWAL (P < 0.001). THESE FINDINGS WERE PARALLELED TO CHANGES IN GLOBAL DNA HYDROXYMETHYLATION ACROSS TIME WHEN AGE WAS EMPLOYED AS A COFACTOR (P < 0.001). SEVERAL POTENTIALLY INFLUENCING VARIABLES LIKE SEVERITY OF WITHDRAWAL, DOSE OF WITHDRAWAL MEDICATION AND ALCOHOL INTAKE BEFORE ADMISSION DID NOT YIELD SIGNIFICANT INFLUENCE ON EPIGENETIC CHANGES. THE RESULTS CONFIRM PREVIOUS FINDINGS OF SIGNIFICANT ALTERATIONS OF EPIGENETIC PATTERNS DURING ALCOHOL INTOXICATION AND PRESENT FOR THE FIRST TIME HYDROXYMETHYLATION CHANGES IN THESE INDIVIDUALS.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
16   119  28 A SYSTEMATIC EXAMINATION OF BRAIN VOLUMETRIC ABNORMALITIES IN RECENT-ONSET SCHIZOPHRENIA USING VOXEL-BASED, SURFACE-BASED AND REGION-OF-INTEREST-BASED MORPHOMETRIC ANALYSES. BACKGROUND: BRAIN MORPHOMETRIC ABNORMALITIES IN SCHIZOPHRENIA HAVE BEEN EXTENSIVELY REPORTED IN THE LITERATURE. WHOLE-BRAIN VOLUMETRIC REDUCTIONS ARE ALMOST UNIVERSALLY REPORTED BY MOST STUDIES IRRESPECTIVE OF THE CHARACTERISTICS OF THE SAMPLES STUDIED (E.G., CHRONIC/RECENT-ONSET; MEDICATED/NEUROLEPTIC-NAIVE ETC.). HOWEVER, THE SAME CANNOT BE SAID OF THE REPORTED REGIONAL MORPHOMETRIC ABNORMALITIES IN SCHIZOPHRENIA. WHILE CERTAIN REGIONAL MORPHOMETRIC ABNORMALITIES ARE MORE FREQUENTLY REPORTED THAN OTHERS, THERE ARE NO SUCH ABNORMALITIES THAT ARE UNIVERSALLY REPORTED ACROSS STUDIES. VARIABILITY OF SOCIO-DEMOGRAPHIC AND CLINICAL CHARACTERISTICS ACROSS STUDY SAMPLES AS WELL AS TECHNICAL AND METHODOLOGICAL ISSUES RELATED TO ACQUISITION AND ANALYSES OF BRAIN STRUCTURAL IMAGES MAY CONTRIBUTE TO INCONSISTENCY OF BRAIN MORPHOMETRIC FINDINGS IN SCHIZOPHRENIA. THE OBJECTIVE OF THE PRESENT STUDY THEREFORE WAS TO SYSTEMATICALLY EXAMINE BRAIN MORPHOMETRY IN PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA TO FIND OUT IF THERE ARE SIGNIFICANT WHOLE-BRAIN OR REGIONAL VOLUMETRIC DIFFERENCES DETECTABLE AT THE APPROPRIATE SIGNIFICANCE THRESHOLD, AFTER ATTEMPTING TO CONTROL FOR VARIOUS CONFOUNDING FACTORS THAT COULD IMPACT BRAIN VOLUMES. METHODS: STRUCTURAL MAGNETIC RESONANCE IMAGES OF 90 SUBJECTS (SCHIZOPHRENIA = 45; HEALTHY SUBJECTS = 45) WERE ACQUIRED USING A 3 TESLA MAGNET. MORPHOMETRIC ANALYSES WERE CARRIED OUT FOLLOWING STANDARD ANALYSES PIPELINES OF THREE MOST COMMONLY USED STRATEGIES, VIZ., WHOLE-BRAIN VOXEL-BASED MORPHOMETRY, WHOLE-BRAIN SURFACE-BASED MORPHOMETRY, AND BETWEEN-GROUP COMPARISONS OF REGIONAL VOLUMES GENERATED BY AUTOMATED SEGMENTATION AND PARCELLATION. RESULTS: IN OUR SAMPLE OF PATIENTS HAVING RECENT-ONSET SCHIZOPHRENIA WITH LIMITED NEUROLEPTIC EXPOSURE, THERE WERE NO SIGNIFICANT WHOLE BRAIN OR REGIONAL BRAIN MORPHOMETRIC ABNORMALITIES NOTED AT THE APPROPRIATE STATISTICAL SIGNIFICANCE THRESHOLDS WITH OR WITHOUT INCLUDING AGE, GENDER AND INTRACRANIAL VOLUME OR TOTAL BRAIN VOLUME IN THE STATISTICAL ANALYSES. CONCLUSIONS: IN THE BACKGROUND OF THE CONFLICTING FINDINGS IN THE LITERATURE, OUR FINDINGS INDICATE THAT BRAIN MORPHOMETRIC ABNORMALITIES MAY NOT BE DIRECTLY RELATED TO THE SCHIZOPHRENIA PHENOTYPE. ANALYSIS OF THE REASONS FOR THE INCONSISTENT RESULTS ACROSS STUDIES AS WELL AS CONSIDERATION OF ALTERNATE SOURCES OF VARIABILITY OF BRAIN MORPHOLOGY IN SCHIZOPHRENIA SUCH AS EPISTATIC AND EPIGENETIC MECHANISMS COULD PERHAPS ADVANCE OUR UNDERSTANDING OF STRUCTURAL BRAIN ALTERATIONS IN SCHIZOPHRENIA.	2015	

17  1835  29 EFFECTS OF NON-HUMAN SPECIES IRRADIATION AFTER THE CHERNOBYL NPP ACCIDENT. THE AREA AFFECTED BY THE CHERNOBYL NUCLEAR POWER PLANT ACCIDENT IN 1986 HAS BECOME A UNIQUE TEST SITE WHERE LONG-TERM ECOLOGICAL AND BIOLOGICAL CONSEQUENCES OF A DRASTIC CHANGE IN A RANGE OF ENVIRONMENTAL FACTORS AS WELL AS TRENDS AND INTENSITY OF SELECTION ARE STUDIED IN NATURAL SETTINGS. THE CONSEQUENCES OF THE CHERNOBYL ACCIDENT FOR BIOTA VARIED FROM AN ENHANCED RATE OF MUTAGENESIS TO DAMAGE AT THE ECOSYSTEM LEVEL. THE REVIEW COMPREHENSIVELY BRINGS TOGETHER KEY DATA OF THE LONG-TERM STUDIES OF BIOLOGICAL EFFECTS IN PLANTS AND ANIMALS INHABITING OVER 20 YEARS THE CHERNOBYL NPP ZONE. THE SEVERITY OF RADIATION EFFECTS WAS STRONGLY DEPENDENT ON THE DOSE RECEIVED IN THE EARLY PERIOD AFTER THE ACCIDENT. THE MOST EXPOSED PHYTOCENOSES AND SOIL ANIMALS' COMMUNITIES EXHIBITED DOSE DEPENDENT ALTERATIONS IN THE SPECIES COMPOSITION AND REDUCTION IN BIOLOGICAL DIVERSITY. ON THE OTHER HAND, NO DECREASE IN NUMBERS OR TAXONOMIC DIVERSITY OF SMALL MAMMALS EVEN IN THE MOST RADIOACTIVE HABITAT WAS SHOWN. IN A MAJORITY OF THE STUDIES, IN BOTH PLANT AND ANIMAL POPULATIONS FROM THE CHERNOBYL ZONE, IN THE FIRST YEARS AFTER THE ACCIDENT HIGH INCREASES IN MUTATION RATES WERE DOCUMENTED. IN MOST CASES THE DOSE-EFFECT RELATIONSHIPS WERE NONLINEAR AND THE MUTATION RATES PER UNIT DOSE WERE HIGHER AT LOW DOSES AND DOSE RATES. IN SUBSEQUENT YEARS A DECLINE IN THE RADIATION BACKGROUND RATE OCCURRED FASTER THAN REDUCTION IN THE MUTATION RATE. PLANT AND ANIMAL POPULATIONS HAVE SHOWN SIGNS OF ADAPTATION TO CHRONIC EXPOSURE. IN ADAPTATION TO THE ENHANCED LEVEL OF EXPOSURE AN ESSENTIAL ROLE OF EPIGENETIC MECHANISMS OF GENE EXPRESSION REGULATION WAS SHOWN. BASED ON THE CHERNOBYL NPP ACCIDENT STUDIES, IN THE PRESENT REVIEW ATTEMPTS WERE MADE TO ASSESS MINIMUM DOSES AT WHICH ECOLOGICAL AND BIOLOGICAL EFFECTS WERE OBSERVED.	2008	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
18  2632  34 EPIGENOME-WIDE DNA METHYLATION AND PESTICIDE USE IN THE AGRICULTURAL LUNG HEALTH STUDY. BACKGROUND: PESTICIDE EXPOSURE IS ASSOCIATED WITH MANY LONG-TERM HEALTH OUTCOMES; THE POTENTIAL UNDERLYING MECHANISMS ARE NOT WELL ESTABLISHED FOR MOST ASSOCIATIONS. EPIGENETIC MODIFICATIONS, SUCH AS DNA METHYLATION, MAY CONTRIBUTE. INDIVIDUAL PESTICIDES MAY BE ASSOCIATED WITH SPECIFIC DNA METHYLATION PATTERNS BUT NO EPIGENOME-WIDE ASSOCIATION STUDY (EWAS) HAS EVALUATED METHYLATION IN RELATION TO INDIVIDUAL PESTICIDES. OBJECTIVES: WE CONDUCTED AN EWAS OF DNA METHYLATION IN RELATION TO SEVERAL PESTICIDE ACTIVE INGREDIENTS. METHODS: THE AGRICULTURAL LUNG HEALTH STUDY IS A CASE-CONTROL STUDY OF ASTHMA, NESTED WITHIN THE AGRICULTURAL HEALTH STUDY. WE ANALYZED BLOOD DNA METHYLATION MEASURED USING ILLUMINA'S EPIC ARRAY IN 1,170 MALE FARMERS OF EUROPEAN ANCESTRY. FOR PESTICIDES STILL ON THE MARKET AT BLOOD COLLECTION (2009-2013), WE EVALUATED NINE ACTIVE INGREDIENTS FOR WHICH AT LEAST 30 PARTICIPANTS REPORTED PAST AND CURRENT (WITHIN THE LAST 12 MONTHS) USE, AS WELL AS SEVEN BANNED ORGANOCHLORINES WITH AT LEAST 30 PARTICIPANTS REPORTING PAST USE. WE USED ROBUST LINEAR REGRESSION TO COMPARE METHYLATION AT INDIVIDUAL C-PHOSPHATE-G SITES (CPGS) AMONG USERS OF A SPECIFIC PESTICIDE TO NEVER USERS. RESULTS: USING FAMILY-WISE ERROR RATE (P < 9 X 10-8) OR FALSE-DISCOVERY RATE (FDR < 0.05), WE IDENTIFIED 162 DIFFERENTIALLY METHYLATED CPGS ACROSS 8 OF 9 CURRENTLY MARKETED ACTIVE INGREDIENTS (ACETOCHLOR, ATRAZINE, DICAMBA, GLYPHOSATE, MALATHION, METOLACHLOR, MESOTRIONE, AND PICLORAM) AND ONE BANNED ORGANOCHLORINE (HEPTACHLOR). DIFFERENTIALLY METHYLATED CPGS WERE UNIQUE TO EACH ACTIVE INGREDIENT, AND A DOSE-RESPONSE RELATIONSHIP WITH LIFETIME DAYS OF USE WAS OBSERVED FOR MOST. SIGNIFICANT CPGS WERE ENRICHED FOR TRANSCRIPTION MOTIFS AND 28% OF CPGS WERE ASSOCIATED WITH WHOLE BLOOD CIS-GENE EXPRESSION, SUPPORTING FUNCTIONAL EFFECTS OF FINDINGS. WE CORROBORATED A PREVIOUSLY REPORTED ASSOCIATION BETWEEN DICHLORODIPHENYLTRICHLOROETHANE (BANNED IN THE UNITED STATES IN 1972) AND EPIGENETIC AGE ACCELERATION. DISCUSSION: WE IDENTIFIED DIFFERENTIAL METHYLATION FOR SEVERAL ACTIVE INGREDIENTS IN MALE FARMERS OF EUROPEAN ANCESTRY. THESE MAY SERVE AS BIOMARKERS OF CHRONIC EXPOSURE AND COULD INFORM MECHANISMS OF LONG-TERM HEALTH OUTCOMES FROM PESTICIDE EXPOSURE. HTTPS://DOI.ORG/10.1289/EHP8928.	2021	
                                                                                                                                                                                                                                                                                                                                 
19  1154  26 CONSERVED DNA METHYLATION PATTERNS IN HEALTHY BLOOD CELLS AND EXTENSIVE CHANGES IN LEUKEMIA MEASURED BY A NEW QUANTITATIVE TECHNIQUE. GENOME WIDE ANALYSIS OF DNA METHYLATION PROVIDES IMPORTANT INFORMATION IN A VARIETY OF DISEASES, INCLUDING CANCER. HERE, WE DESCRIBE A SIMPLE METHOD, DIGITAL RESTRICTION ENZYME ANALYSIS OF METHYLATION (DREAM), BASED ON NEXT GENERATION SEQUENCING ANALYSIS OF METHYLATION-SPECIFIC SIGNATURES CREATED BY SEQUENTIAL DIGESTION OF GENOMIC DNA WITH SMAI AND XMAI ENZYMES. DREAM PROVIDES INFORMATION ON 150,000 UNIQUE CPG SITES, OF WHICH 39,000 ARE IN CPG ISLANDS AND 30,000 ARE AT TRANSCRIPTION START SITES OF 13,000 REFSEQ GENES. WE ANALYZED DNA METHYLATION IN HEALTHY WHITE BLOOD CELLS AND FOUND METHYLATION PATTERNS TO BE REMARKABLY UNIFORM. INTER INDIVIDUAL DIFFERENCES > 30% WERE OBSERVED ONLY AT 227 OF 28,331 (0.8%) OF AUTOSOMAL CPG SITES. SIMILARLY, > 30% DIFFERENCES WERE OBSERVED AT ONLY 59 SITES WHEN WE COMPARING THE CORD AND ADULT BLOOD. THESE CONSERVED METHYLATION PATTERNS CONTRASTED WITH EXTENSIVE CHANGES AFFECTING 18-40% OF CPG SITES IN A PATIENT WITH ACUTE MYELOID LEUKEMIA AND IN TWO LEUKEMIA CELL LINES. THE METHOD IS COST EFFECTIVE, QUANTITATIVE (R ( 2) = 0.93 WHEN COMPARED WITH BISULFITE PYROSEQUENCING) AND REPRODUCIBLE (R ( 2) = 0.997). USING 100-FOLD COVERAGE, DREAM CAN DETECT DIFFERENCES IN METHYLATION GREATER THAN 10% OR 30% WITH A FALSE POSITIVE RATE BELOW 0.05 OR 0.001, RESPECTIVELY. DREAM CAN BE USEFUL IN QUANTIFYING EPIGENETIC EFFECTS OF ENVIRONMENT AND NUTRITION, CORRELATING DEVELOPMENTAL EPIGENETIC VARIATION WITH PHENOTYPES, UNDERSTANDING EPIGENETICS OF CANCER AND CHRONIC DISEASES, MEASURING THE EFFECTS OF DRUGS ON DNA METHYLATION OR DERIVING NEW BIOLOGICAL INSIGHTS INTO MAMMALIAN GENOMES.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
20   404  36 ANALYSIS OF EPIGENETIC AGE PREDICTORS IN PAIN-RELATED CONDITIONS. CHRONIC PAIN PREVALENCE IS HIGH WORLDWIDE AND INCREASES AT OLDER AGES. SIGNS OF PREMATURE AGING HAVE BEEN ASSOCIATED WITH CHRONIC PAIN, BUT FEW STUDIES HAVE INVESTIGATED AGING BIOMARKERS IN PAIN-RELATED CONDITIONS. A SET OF DNA METHYLATION (DNAM)-BASED ESTIMATES OF AGE, CALLED "EPIGENETIC CLOCKS," HAS BEEN PROPOSED AS BIOLOGICAL MEASURES OF AGE-RELATED ADVERSE PROCESSES, MORBIDITY, AND MORTALITY. THE AIM OF THIS STUDY IS TO ASSESS IF DIFFERENT PAIN-RELATED PHENOTYPES SHOW ALTERATIONS IN DNAM AGE. IN OUR ANALYSIS, WE CONSIDERED THREE COHORTS FOR WHICH WHOLE-BLOOD DNAM DATA WERE AVAILABLE: HEAT PAIN SENSITIVITY (HPS), INCLUDING 20 MONOZYGOTIC TWIN PAIRS DISCORDANT FOR HEAT PAIN TEMPERATURE THRESHOLD; FIBROMYALGIA (FM), INCLUDING 24 CASES AND 20 CONTROLS; AND HEADACHE, INCLUDING 22 CHRONIC MIGRAINE AND MEDICATION OVERUSE HEADACHE PATIENTS (MOH), 18 EPISODIC MIGRAINEURS (EM), AND 13 HEALTHY SUBJECTS. WE USED THE HORVATH'S EPIGENETIC AGE CALCULATOR TO OBTAIN DNAM-BASED ESTIMATES OF EPIGENETIC AGE, TELOMERE LENGTH, LEVELS OF 7 PROTEINS IN PLASMA, NUMBER OF SMOKED PACKS OF CIGARETTES PER YEAR, AND BLOOD CELL COUNTS. WE DID NOT FIND DIFFERENCES IN EPIGENETIC AGE ACCELERATION, CALCULATED USING FIVE DIFFERENT EPIGENETIC CLOCKS, BETWEEN SUBJECTS DISCORDANT FOR PAIN-RELATED PHENOTYPES. TWINS WITH HIGH HPS HAD INCREASED CD8+ T CELL COUNTS (NOMINAL P = 0.028). HPS THRESHOLDS WERE NEGATIVELY ASSOCIATED WITH ESTIMATED LEVELS OF GDF15 (NOMINAL P = 0.008). FM PATIENTS SHOWED DECREASED NAIVE CD4+ T CELL COUNTS COMPARED WITH CONTROLS (NOMINAL P = 0.015). THE SEVERITY OF FM MANIFESTATIONS EXPRESSED THROUGH VARIOUS EVALUATION TESTS WAS ASSOCIATED WITH DECREASED LEVELS OF LEPTIN, SHORTER LENGTH OF TELOMERES, AND REDUCED CD8+ T AND NATURAL KILLER CELL COUNTS (NOMINAL P < 0.05), WHILE THE DURATION OF PAINFUL SYMPTOMS WAS POSITIVELY ASSOCIATED WITH TELOMERE LENGTH (NOMINAL P = 0.034). NO DIFFERENCES IN DNAM-BASED ESTIMATES WERE DETECTED FOR MOH OR EM COMPARED WITH CONTROLS. IN SUMMARY, OUR STUDY SUGGESTS THAT HPS, FM, AND MOH/EM DO NOT SHOW SIGNS OF EPIGENETIC AGE ACCELERATION IN WHOLE BLOOD, WHILE HPS AND FM ARE ASSOCIATED WITH DNAM-BASED ESTIMATES OF IMMUNOLOGICAL PARAMETERS, PLASMA PROTEINS, AND TELOMERE LENGTH. FUTURE STUDIES SHOULD EXTEND THESE OBSERVATIONS IN LARGER COHORTS.	2020