1  2043 112 EPIGENETIC CLOCK ANALYSIS IN LONG-TERM MEDITATORS. IN THIS PAPER, WE EXAMINED WHETHER MEDITATION PRACTICE INFLUENCES THE EPIGENETIC CLOCK, A STRONG AND REPRODUCIBLE BIOMARKER OF BIOLOGICAL AGING, WHICH IS ACCELERATED BY CUMULATIVE LIFETIME STRESS AND WITH AGE-RELATED CHRONIC DISEASES. USING THE ILLUMINA 450K ARRAY PLATFORM, WE ANALYZED THE DNA METHYLOME FROM BLOOD CELLS OF LONG-TERM MEDITATORS AND MEDITATION-NAIVE CONTROLS TO ESTIMATE THEIR INTRINSIC EPIGENETIC AGE ACCELERATION (IEAA), USING HORVATH'S CALCULATOR. IEAA WAS SIMILAR IN BOTH GROUPS. HOWEVER, CONTROLS SHOWED A DIFFERENT IEAA TRAJECTORY WITH AGING THAN MEDITATORS: OLDER CONTROLS (AGE>/=52) HAD SIGNIFICANTLY HIGHER IEAAS COMPARED WITH YOUNGER CONTROLS (AGE <52), WHILE MEDITATORS WERE PROTECTED FROM THIS EPIGENETIC AGING EFFECT. NOTABLY, IN THE MEDITATION GROUP, WE FOUND A SIGNIFICANT NEGATIVE CORRELATION BETWEEN IEAA AND THE NUMBER OF YEARS OF REGULAR MEDITATION PRACTICE. FROM OUR RESULTS, WE HYPOTHESIZE THAT THE CUMULATIVE EFFECTS OF A REGULAR MEDITATION PRACTICE MAY, IN THE LONG-TERM, HELP TO SLOW THE EPIGENETIC CLOCK AND COULD REPRESENT A USEFUL PREVENTIVE STRATEGY FOR AGE-RELATED CHRONIC DISEASES. LONGITUDINAL RANDOMIZED CONTROLLED TRIALS IN LARGER COHORTS ARE WARRANTED TO CONFIRM AND FURTHER CHARACTERIZE THESE FINDINGS.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
2  5346  44 RAPID CHANGES IN HISTONE DEACETYLASES AND INFLAMMATORY GENE EXPRESSION IN EXPERT MEDITATORS. BACKGROUND: A GROWING BODY OF RESEARCH SHOWS THAT MINDFULNESS MEDITATION CAN ALTER NEURAL, BEHAVIORAL AND BIOCHEMICAL PROCESSES. HOWEVER, THE MECHANISMS RESPONSIBLE FOR SUCH CLINICALLY RELEVANT EFFECTS REMAIN ELUSIVE. METHODS: HERE WE EXPLORED THE IMPACT OF A DAY OF INTENSIVE PRACTICE OF MINDFULNESS MEDITATION IN EXPERIENCED SUBJECTS (N=19) ON THE EXPRESSION OF CIRCADIAN, CHROMATIN MODULATORY AND INFLAMMATORY GENES IN PERIPHERAL BLOOD MONONUCLEAR CELLS (PBMC). IN PARALLEL, WE ANALYZED A CONTROL GROUP OF SUBJECTS WITH NO MEDITATION EXPERIENCE WHO ENGAGED IN LEISURE ACTIVITIES IN THE SAME ENVIRONMENT (N=21). PBMC FROM ALL PARTICIPANTS WERE OBTAINED BEFORE (T1) AND AFTER (T2) THE INTERVENTION (T2-T1=8H) AND GENE EXPRESSION WAS ANALYZED USING CUSTOM PATHWAY FOCUSED QUANTITATIVE-REAL TIME PCR ASSAYS. BOTH GROUPS WERE ALSO PRESENTED WITH THE TRIER SOCIAL STRESS TEST (TSST). RESULTS: CORE CLOCK GENE EXPRESSION AT BASELINE (T1) WAS SIMILAR BETWEEN GROUPS AND THEIR RHYTHMICITY WAS NOT INFLUENCED IN MEDITATORS BY THE INTENSIVE DAY OF PRACTICE. SIMILARLY, WE FOUND THAT ALL THE EPIGENETIC REGULATORY ENZYMES AND INFLAMMATORY GENES ANALYZED EXHIBITED SIMILAR BASAL EXPRESSION LEVELS IN THE TWO GROUPS. IN CONTRAST, AFTER THE BRIEF INTERVENTION WE DETECTED REDUCED EXPRESSION OF HISTONE DEACETYLASE GENES (HDAC 2, 3 AND 9), ALTERATIONS IN GLOBAL MODIFICATION OF HISTONES (H4AC; H3K4ME3) AND DECREASED EXPRESSION OF PRO-INFLAMMATORY GENES (RIPK2 AND COX2) IN MEDITATORS COMPARED WITH CONTROLS. WE FOUND THAT THE EXPRESSION OF RIPK2 AND HDAC2 GENES WAS ASSOCIATED WITH A FASTER CORTISOL RECOVERY TO THE TSST IN BOTH GROUPS. CONCLUSIONS: THE REGULATION OF HDACS AND INFLAMMATORY PATHWAYS MAY REPRESENT SOME OF THE MECHANISMS UNDERLYING THE THERAPEUTIC POTENTIAL OF MINDFULNESS-BASED INTERVENTIONS. OUR FINDINGS SET THE FOUNDATION FOR FUTURE STUDIES TO FURTHER ASSESS MEDITATION STRATEGIES FOR THE TREATMENT OF CHRONIC INFLAMMATORY CONDITIONS.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
3  6096  29 THE EFFECTS OF STRESS AND MEDITATION ON THE IMMUNE SYSTEM, HUMAN MICROBIOTA, AND EPIGENETICS. CONTEXT * GLOBALLY, MORE THAN 25% OF INDIVIDUALS ARE AFFECTED BY ANXIETY AND DEPRESSION DISORDERS. MEDITATION IS GAINING POPULARITY IN CLINICAL SETTINGS AND ITS TREATMENT EFFICACY IS BEING STUDIED FOR A WIDE ARRAY OF PSYCHOLOGICAL AND PHYSIOLOGICAL AILMENTS. AN EXPLORATION OF STRESS PHYSIOLOGY IS AN ESSENTIAL PRECURSOR TO DELINEATION OF THE MECHANISMS UNDERLYING THE BENEFICIAL EFFECTS OF MEDITATION PRACTICES. OBJECTIVE * THE REVIEW OUTLINES A MODEL OF INTERCONNECTED PHYSIOLOGICAL PROCESSES THAT MIGHT SUPPORT THE CONTINUED INCLUSION AND EXPANSION OF MEDITATION IN THE TREATMENT OF DIVERSE MEDICAL CONDITIONS AND TO INVESTIGATE THE ROLE THAT GUT MICROBIOTA MAY PLAY IN REALIZING WELL-BEING THROUGH MEDITATION. DESIGN * THE AUTHORS CONDUCTED A SCIENTIFIC LITERATURE DATABASE SEARCH WITH THE GOAL OF REVIEWING THE LINK BETWEEN STRESS MANAGEMENT TECHNIQUES AND HUMAN MICROBIOTA. THEIR GOAL WAS ALSO TO IDENTIFY THE EXTENT OF UNDERLYING EPIGENETIC REACTIONS IN THESE PROCESSES. THE REVIEW WAS COMPLETED IN APPROXIMATELY 2 Y. DATABASES SEARCHED INCLUDED MEDLINE VIA PUBMED AND OVID, PSYCINFO VIA OVID, SPINET, PROQUEST CENTRAL, SAGE RESEARCH METHODS ONLINE, CINAHL PLUS WITH FULL TEXT, SCIENCE DIRECT, SPRINGER LINK, AND WILEY ONLINE LIBRARY. KEYWORDS SEARCHED INCLUDED, BUT WERE NOT LIMITED TO, STRESS, MEDITATION, MINDFULNESS, IMMUNE SYSTEM, HPA AXIS, SYMPATHETIC NERVOUS SYSTEM, PARASYMPATHETIC NERVOUS SYSTEM, MICROBIOTA, MICROBIOME, GUT-BARRIER FUNCTION, LEAKY GUT, VAGUS NERVE, PSYCHONEUROIMMUNOLOGY, EPIGENETIC, AND NF-KAPPAB. SETTING * THE STUDY TOOK PLACE AT NEW YORK UNIVERSITY (NEW YORK, NY, USA), THE UNIVERSITY OF CALIFORNIA, SAN DIEGO (LA JOLLA, CA, USA), AND THE CHOPRA FOUNDATION (CARLSBAD, CA, USA). RESULTS * PSYCHOLOGICAL STRESS TYPICALLY TRIGGERS A FIGHT-OR-FLIGHT RESPONSE, PROMPTING CORTICOTROPIN-RELEASING HORMONE AND CATECHOLAMINE PRODUCTION IN VARIOUS PARTS OF THE BODY, WHICH ULTIMATELY DISTURBS THE MICROBIOTA. IN THE ABSENCE OF STRESS, A HEALTHY MICROBIOTA PRODUCES SHORT-CHAIN FATTY ACIDS THAT EXERT ANTI-INFLAMMATORY AND ANTITUMOR EFFECTS. DURING STRESS, AN ALTERED GUT MICROBIAL POPULATION AFFECTS THE REGULATION OF NEUROTRANSMITTERS MEDIATED BY THE MICROBIOME AND GUT BARRIER FUNCTION. MEDITATION HELPS REGULATE THE STRESS RESPONSE, THEREBY SUPPRESSING CHRONIC INFLAMMATION STATES AND MAINTAINING A HEALTHY GUT-BARRIER FUNCTION. CONCLUSIONS * THE CURRENT RESEARCH TEAM RECOMMENDS THE INTEGRATION OF MEDITATION INTO CONVENTIONAL HEALTH CARE AND WELLNESS MODELS. CONCURRENTLY, STUDIES TO EXPLORE THE EFFECTS OF MEDITATION ON HUMAN MICROBIOTA ARE WARRANTED.	2017	

4  6547  47 TRANSCRIPTOMICS OF LONG-TERM MEDITATION PRACTICE: EVIDENCE FOR PREVENTION OR REVERSAL OF STRESS EFFECTS HARMFUL TO HEALTH. BACKGROUND AND OBJECTIVES: STRESS CAN OVERLOAD ADAPTIVE MECHANISMS, LEADING TO EPIGENETIC EFFECTS HARMFUL TO HEALTH. RESEARCH ON THE REVERSAL OF THESE EFFECTS IS IN ITS INFANCY. EARLY RESULTS SUGGEST SOME MEDITATION TECHNIQUES HAVE HEALTH BENEFITS THAT GROW WITH REPEATED PRACTICE. THIS STUDY FOCUSED ON POSSIBLE TRANSCRIPTOMIC EFFECTS OF 38 YEARS OF TWICE-DAILY TRANSCENDENTAL MEDITATION((R)) (TM((R))) PRACTICE. MATERIALS AND METHODS: FIRST, USING ILLUMINA((R)) BEADCHIP MICROARRAY TECHNOLOGY, DIFFERENCES IN GLOBAL GENE EXPRESSION IN PERIPHERAL BLOOD MONONUCLEAR CELLS (PBMCS) WERE SOUGHT BETWEEN HEALTHY PRACTITIONERS AND TIGHTLY MATCHED CONTROLS (N = 12, AGE 65). SECOND, THESE MICROARRAY RESULTS WERE VERIFIED ON A SUBSET OF GENES USING QUANTITATIVE POLYMERASE CHAIN REACTION (QPCR) AND WERE VALIDATED USING QPCR IN LARGER TM AND CONTROL GROUPS (N = 45, AGE 63). BIOINFORMATICS INVESTIGATION EMPLOYED INGENUITY((R)) PATHWAY ANALYSIS (IPA((R))), DAVID, GENOMATIX, AND R PACKAGES. RESULTS: THE 200 GENES AND LOCI FOUND TO MEET STRICT CRITERIA FOR DIFFERENTIAL EXPRESSION IN THE MICROARRAY EXPERIMENT SHOWED CONTRASTING PATTERNS OF EXPRESSION THAT DISTINGUISHED THE TWO GROUPS. DIFFERENTIAL EXPRESSION RELATING TO IMMUNE FUNCTION AND ENERGY EFFICIENCY WERE MOST APPARENT. IN THE TM GROUP, RELATIVE TO THE CONTROL, ALL 49 GENES ASSOCIATED WITH INFLAMMATION WERE DOWNREGULATED, WHILE GENES ASSOCIATED WITH ANTIVIRAL AND ANTIBODY COMPONENTS OF THE DEFENSE RESPONSE WERE UPREGULATED. THE LARGEST EXPRESSION DIFFERENCES WERE SHOWN BY SIX GENES RELATED TO ERYTHROCYTE FUNCTION THAT APPEARED TO REFLECT A CONDITION OF LOWER ENERGY EFFICIENCY IN THE CONTROL GROUP. RESULTS SUPPORTING THESE GENE EXPRESSION DIFFERENCES WERE OBTAINED WITH QPCR-MEASURED EXPRESSION BOTH IN THE WELL-MATCHED MICROARRAY GROUPS AND IN THE LARGER, LESS WELL-MATCHED GROUPS. CONCLUSIONS: THESE FINDINGS ARE CONSISTENT WITH PREDICTIONS BASED ON RESULTS FROM EARLIER RANDOMIZED TRIALS OF MEDITATION AND MAY PROVIDE EVIDENCE FOR STRESS-RELATED MOLECULAR MECHANISMS UNDERLYING REDUCTIONS IN ANXIETY, POST-TRAUMATIC STRESS DISORDER (PTSD), CARDIOVASCULAR DISEASE (CVD), AND OTHER CHRONIC DISORDERS AND DISEASES.	2021	
                                                                                                                                                                                                                                                                                                                                                                                            
5   815  36 CHANGES IN THE EXPRESSION OF INFLAMMATORY AND EPIGENETIC-MODULATORY GENES AFTER AN INTENSIVE MEDITATION RETREAT. BACKGROUND: MEDITATION RETREATS ARE CHARACTERIZED BY INTENSIVE OR CONCENTRATED PERIODS OF MEDITATION PRACTICE, COMMONLY UNDERTAKEN IN A RESIDENTIAL SETTING. ALTHOUGH RESEARCH INDICATES THAT MEDITATION TRAINING CAN POSITIVELY INFLUENCE PHYSICAL AND MENTAL HEALTH OUTCOMES, THE BIOLOGICAL CONSEQUENCES OF MEDITATION RETREAT INTERVENTIONS ARE RELATIVELY UNDERSTUDIED. IN THIS STUDY, WE EXAMINED THE INFLUENCE OF A MONTH-LONG, SILENT MEDITATION RETREAT ON THE EXPRESSION OF GENES INVOLVED IN EPIGENETIC MODULATION AND IMMUNE PROCESSES. METHOD: WE ASSESSED GENE EXPRESSION CHANGES IN EXPERIENCED MEDITATORS ATTENDING A MONTH-LONG INSIGHT MEDITATION RETREAT (N = 28), AS COMPARED TO A COMMUNITY CONTROL GROUP (N = 34) OF EXPERIENCED PRACTITIONERS LIVING THEIR EVERYDAY LIVES. BLOOD SAMPLES WERE COLLECTED ON DAY TWO OF THE RETREAT (TIME 1) AND AGAIN 3 WEEKS LATER (TIME 2). CONTROL PARTICIPANTS WERE ALSO ASSESSED ACROSS A 3-WEEK INTERVAL, DURING WHICH THEY MAINTAINED THEIR REGULAR DAILY ROUTINES. RESULTS: AS COMPARED TO CONTROLS, RETREAT PARTICIPANTS SHOWED DIFFERENTIAL CHANGES IN THE EXPRESSION OF SEVERAL GENES INVOLVED IN CHROMATIN MODULATION AND INFLAMMATION. THE MOST SUBSTANTIVE FINDING WAS DOWNREGULATION OF THE TNF PATHWAY IN RETREAT PARTICIPANTS, WHICH WAS NOT OBSERVED IN CONTROLS. CONCLUSIONS: THESE FINDINGS INDICATE THAT MEDITATION RETREAT PARTICIPATION MAY INFLUENCE SOME OF THE INFLAMMATORY MECHANISMS INVOLVED IN THE DEVELOPMENT OF CHRONIC DISEASES, AND THAT THIS STYLE OF PSYCHOSOCIAL INTERVENTION MAY HAVE THERAPEUTIC POTENTIAL, PARTICULARLY IN EXPERIENCED PRACTITIONERS.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
6   223  36 ACUTE PSYCHOSOCIAL STRESS-MEDIATED CHANGES IN THE EXPRESSION AND METHYLATION OF PERFORIN IN CHRONIC FATIGUE SYNDROME. PERFORIN (PRF1) IS ESSENTIAL FOR IMMUNE SURVEILLANCE AND STUDIES REPORT DECREASED PERFORIN IN CHRONIC FATIGUE SYNDROME (CFS), AN ILLNESS POTENTIALLY ASSOCIATED WITH STRESS AND/OR INFECTION. WE HYPOTHESIZE THAT STRESS CAN INFLUENCE REGULATION OF PRF1 EXPRESSION, AND THAT THIS REGULATION WILL DIFFER BETWEEN CFS AND NON-FATIGUED (NF) CONTROLS. WE USED THE TRIER SOCIAL STRESS TEST (TSST) AS A STANDARDIZED ACUTE PSYCHOSOCIAL STRESS, AND EVALUATED ITS EFFECT ON PRF1 EXPRESSION AND METHYLATION IN CFS (N = 34) COMPARED WITH NF (N = 47) PARTICIPANTS. DURING THE TSST, NATURAL KILLER (NK) CELLS INCREASED SIGNIFICANTLY IN BOTH CFS (P = <0.0001) AND NF SUBJECTS (P = <0.0001). UNLIKE PREVIOUS REPORTS, THERE WAS NO SIGNIFICANT DIFFERENCE IN PRF1 EXPRESSION AT BASELINE OR DURING TSST BETWEEN CFS AND NF. HOWEVER, WHOLE BLOOD PRF1 EXPRESSION INCREASED 1.6 FOLD DURING THE TSST IN BOTH CFS (P = 0.0003) AND NF (P = <0.0001). FURTHER, THE PEAK RESPONSE IMMEDIATELY FOLLOWING THE TSST WAS LOWER IN CFS COMPARED WITH NF (P = 0.04). IN ADDITION, AT 1.5 HOURS POST TSST, PRF1 EXPRESSION WAS ELEVATED IN CFS COMPARED WITH NF (WHOLE BLOOD, P = 0.06; PBMC, P = 0.02). METHYLATION OF SEVEN CPG SITES IN THE METHYLATION SENSITIVE REGION OF THE PRF1 PROMOTER RANGED FROM 38%-79% WITH NO SIGNIFICANT DIFFERENCES BETWEEN CFS AND NF. ALTHOUGH, THE AVERAGE BASELINE METHYLATION OF ALL SEVEN CPG SITES DID NOT DIFFER BETWEEN CFS AND NF GROUPS, IT SHOWED A SIGNIFICANT NEGATIVE CORRELATION WITH PRF1 EXPRESSION AT ALL TSST TIME POINTS IN BOTH CFS (R = -0.56, P = <0.0001) AND NF (R = -0.38, P = <0.0001). AMONG PARTICIPANTS WITH HIGH AVERAGE METHYLATION (>/=65%), PRF1 EXPRESSION WAS SIGNIFICANTLY LOWER IN CFS THAN NF SUBJECTS IMMEDIATELY FOLLOWING TSST. THESE FINDINGS SUGGEST METHYLATION COULD BE AN IMPORTANT EPIGENETIC DETERMINANT OF INTER-INDIVIDUAL DIFFERENCES IN PRF1 EXPRESSION AND THAT THE DIFFERENCES IN PRF1 EXPRESSION AND METHYLATION BETWEEN CFS AND NF IN THE ACUTE STRESS RESPONSE REQUIRE FURTHER INVESTIGATION.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
7  3179  33 HAIR CORTISOL AS A HYPOTHALAMIC-PITUITARY-ADRENAL AXIS BIOMARKER IN PREGNANT WOMEN WITH ASTHMA: A RETROSPECTIVE OBSERVATIONAL STUDY. BACKGROUND: CORTISOL IS A HORMONE INVOLVED IN MANY PHYSIOLOGICAL FUNCTIONS INCLUDING FETAL MATURATION AND EPIGENETIC PROGRAMMING DURING PREGNANCY. THIS STUDY AIMED TO USE HAIR CORTISOL AS A BIOMARKER OF CHRONIC INHALED CORTICOSTEROID (ICS) EXPOSURE AND ASSESS THE POTENTIAL EFFECTS OF ASTHMA ON THE HYPOTHALAMIC-PITUITARY-ADRENAL (HPA) AXIS IN PREGNANT WOMEN. WE HYPOTHESIZED THAT PREGNANT WOMEN WITH ASTHMA TREATED WITH ICS WOULD EXHIBIT LOWER HAIR CORTISOL CONCENTRATIONS, INDICATIVE OF ADRENAL SUPPRESSION, COMPARED TO WOMEN WITH ASTHMA NOT USING ICS AND WOMEN WHO DO NOT HAVE ASTHMA. METHODS: WE PERFORMED AN OBSERVATIONAL RETROSPECTIVE COHORT STUDY. HAIR SAMPLES WERE ANALYZED FROM PREGNANT WOMEN WITH ASTHMA, WITH (N = 56) AND WITHOUT (N = 31) ICS TREATMENT, AND PREGNANT WOMEN WITHOUT ASTHMA (N = 31). HAIR SAMPLES WERE SEGMENTED BASED ON THE GROWTH RATE OF 1 CM/MONTH AND ANALYZED BY ENZYME IMMUNOASSAY TO PROVIDE CORTISOL CONCENTRATIONS CORRESPONDING TO PRECONCEPTION, TRIMESTERS 1-3, AND POSTPARTUM. HAIR CORTISOL CONCENTRATIONS WERE COMPARED WITHIN AND AMONG THE GROUPS USING NON-PARAMETRIC STATISTICAL TESTS. RESULTS: HAIR CORTISOL CONCENTRATIONS INCREASED ACROSS TRIMESTERS FOR ALL THREE GROUPS, BUT THIS INCREASE WAS DAMPENED IN WOMEN WITH ASTHMA (P = 0.03 FOR CONTROLS VS. ICS TREATED AND CONTROLS VS. NO ICS). ICS TREATED WOMEN TAKING MORE THAN FIVE DOSES PER WEEK HAD HAIR CORTISOL CONCENTRATIONS 47 % LOWER IN THIRD TRIMESTER THAN CONTROLS. LINEAR REGRESSION OF THE THIRD TRIMESTER HAIR CORTISOL RESULTS IDENTIFIED ASTHMA AS A SIGNIFICANT FACTOR WHEN COMPARING CONSISTENT ICS USE OR ASTHMA AS THE PREDICTOR (F(1, 25) = 9.7, P = 0.005, R(2) ADJ = 0.257). CONCLUSIONS: HAIR CORTISOL SUCCESSFULLY SHOWED THE EXPECTED CHANGE IN CORTISOL OVER THE COURSE OF PREGNANCY AND MAY BE A USEFUL BIOMARKER OF HPA AXIS FUNCTION IN PREGNANT WOMEN WITH ASTHMA. THE POTENTIAL IMPACT OF DECREASED MATERNAL CORTISOL IN WOMEN WITH ASTHMA ON PERINATAL OUTCOMES REMAINS TO BE DETERMINED.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
8  5957  37 TELOMERE LENGTH AND EPIGENETIC AGE ACCELERATION IN ADOLESCENTS WITH ANXIETY DISORDERS. EVIDENCE ON THE RELATIONSHIP BETWEEN GENETICS AND MENTAL HEALTH ARE FLOURISHING. HOWEVER, FEW STUDIES ARE EVALUATING EARLY BIOMARKERS THAT MIGHT LINK GENES, ENVIRONMENT, AND PSYCHOPATHOLOGY. WE AIMED TO STUDY TELOMERE LENGTH (TL) AND EPIGENETIC AGE ACCELERATION (AA) IN A COHORT OF ADOLESCENTS WITH AND WITHOUT ANXIETY DISORDERS (N = 234). WE EVALUATED A REPRESENTATIVE SUBSAMPLE OF PARTICIPANTS AT BASELINE AND AFTER 5 YEARS (N = 76) AND CATEGORIZED THEM ACCORDING TO THEIR ANXIETY DISORDER DIAGNOSIS AT BOTH TIME POINTS: (1) CONTROL GROUP (NO ANXIETY DISORDER, N = 18), (2) VARIABLE GROUP (ANXIETY DISORDER IN ONE EVALUATION, N = 38), AND (3) PERSISTENT GROUP (ANXIETY DISORDER AT BOTH TIME POINTS, N = 20). WE ASSESSED RELATIVE MEAN TL BY REAL-TIME QUANTITATIVE PCR AND DNA METHYLATION BY INFINIUM HUMANMETHYLATION450 BEADCHIP. WE CALCULATED AA USING THE HORVATH AGE ESTIMATION ALGORITHM AND ANALYZED DIFFERENCES AMONG GROUPS USING GENERALIZED LINEAR MIXED MODELS. THE PERSISTENT GROUP OF ANXIETY DISORDER DID NOT CHANGE TL OVER TIME (P = 0.495). THE VARIABLE GROUP HAD HIGHER BASELINE TL (P = 0.003) BUT NO ACCELERATED TL EROSION IN COMPARISON TO THE NON-ANXIETY CONTROL GROUP (P = 0.053). FURTHERMORE, THERE WERE NO DIFFERENCES IN AA AMONG GROUPS OVER TIME. OUR FINDINGS SUGGEST THAT ADOLESCENTS WITH CHRONIC ANXIETY DID NOT CHANGE TELOMERE LENGTH OVER TIME, WHICH COULD BE RELATED TO A DELAY IN NEURONAL DEVELOPMENT IN THIS PERIOD OF LIFE.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
9  2734  37 EXPLORING THE RELATIONSHIP BETWEEN DNA METHYLATION AGE MEASURES AND PSYCHONEUROLOGICAL SYMPTOMS IN WOMEN WITH EARLY-STAGE BREAST CANCER. PURPOSE: THE EPIGENETIC CLOCK HAS BEEN ACKNOWLEDGED AS AN INDICATOR FOR MOLECULAR AGING, BUT FEW STUDIES HAVE EXAMINED POSSIBLE ASSOCIATIONS OF DNA METHYLATION (DNAM) AGE OR AGE ACCELERATION (AA) WITH SYMPTOM BURDEN IN INDIVIDUALS WHO ARE TREATED FOR CANCER. THIS STUDY EXPLORED THE ASSOCIATION OF DNAM AGE OR AA WITH PSYCHONEUROLOGICAL (PN) SYMPTOMS, INCLUDING COGNITIVE IMPAIRMENT, FATIGUE, SLEEP DISTURBANCES, PAIN, AND DEPRESSIVE SYMPTOMS, IN BREAST CANCER SURVIVORS OVER A 2-YEAR PERIOD. METHODS: WE MEASURED PN SYMPTOMS USING RELIABLE INSTRUMENTS AND DNAM LEVELS BY INFINIUM HUMANMETHYLATION450K BEADCHIP (N = 72). DNAM AGE WAS CALCULATED BY THE HORVATH, GRIM, AND HANNUM-BASED INTRINSIC AND EXTRINSIC AGE ESTIMATIONS. AA WAS DEFINED BY THE RESIDUAL REGRESSING ESTIMATED EPIGENETIC AGE ON CHRONOLOGICAL AGE. MIXED REGRESSION MODELS WERE FITTED FOR AA AND CHANGES IN AA TO STUDY THE ASSOCIATION OVER TIME. SEPARATE LINEAR REGRESSION MODELS AND A MIXED-EFFECTS MODEL WERE FITTED FOR AA AT EACH TIME POINT. RESULTS: HORVATH-AA, GRIM-AA, AND EXTRINSIC EPIGENETIC AA WERE SIGNIFICANTLY CHANGED OVER TIME, WHILE INTRINSIC EPIGENETIC AA DID NOT EXHIBIT ANY TEMPORAL CHANGES. INCREASED AA WAS ASSOCIATED WITH GREATER ANXIETY AND FATIGUE, AS WELL AS WORSE COGNITIVE MEMORY, ADJUSTING FOR RACE, BMI, INCOME, CHEMOTHERAPY, RADIATION THERAPY, AND CHRONOLOGICAL AGE. INCREASED DNAM AGE WAS ASSOCIATED WITH GREATER ANXIETY OVER 2 YEARS. CONCLUSION: OUR FINDINGS SUGGEST DNAM AGE AND AA MAY BE ASSOCIATED WITH PN SYMPTOMS OVER THE COURSE OF CANCER TREATMENT AND SURVIVORSHIP. SOME PN SYMPTOMS MAY BE AMENABLE TO PREVENTIVE INTERVENTIONS TARGETED TO EPIGENETIC CLOCKS THAT INFLUENCE AGING-ASSOCIATED PROCESSES.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
10   502  34 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	
                                                                           
11  5395  33 REDUCED EPIGENETIC AGE IN OLDER ADULTS WITH HIGH SENSE OF PURPOSE IN LIFE. PSYCHOSOCIAL RISK FACTORS HAVE BEEN LINKED WITH ACCELERATED EPIGENETIC AGING, BUT LITTLE IS KNOWN ABOUT WHETHER PSYCHOSOCIAL RESILIENCE FACTORS (EG, SENSE OF PURPOSE IN LIFE) MIGHT REDUCE EPIGENETIC AGE ACCELERATION. IN THIS STUDY, WE TESTED IF OLDER ADULTS WHO EXPERIENCE HIGH LEVELS OF PURPOSE MIGHT SHOW REDUCED EPIGENETIC AGE ACCELERATION. WE EVALUATED THE RELATIONSHIP BETWEEN PURPOSE AND EPIGENETIC AGE ACCELERATION AS MEASURED BY 13 DNA METHYLATION (DNAM) "EPIGENETIC CLOCKS" ASSESSED IN 1 572 OLDER ADULTS FROM THE HEALTH AND RETIREMENT STUDY (MEAN AGE 70 YEARS). WE QUANTIFIED THE TOTAL ASSOCIATION BETWEEN PURPOSE AND DNAM AGE ACCELERATION AS WELL AS THE EXTENT TO WHICH THAT TOTAL ASSOCIATION MIGHT BE ATTRIBUTABLE TO DEMOGRAPHIC FACTORS, CHRONIC DISEASE, OTHER PSYCHOSOCIAL VARIABLES (EG, POSITIVE AFFECT), AND HEALTH-RELATED BEHAVIORS (HEAVY DRINKING, SMOKING, PHYSICAL ACTIVITY, AND BODY MASS INDEX [BMI]). PURPOSE IN LIFE WAS ASSOCIATED WITH REDUCED EPIGENETIC AGE ACCELERATION ACROSS 4 "SECOND-GENERATION" DNAM CLOCKS OPTIMIZED FOR PREDICTING HEALTH AND LONGEVITY (FALSE DISCOVERY RATE [FDR] Q < 0.0001: PHENOAGE, GRIMAGE, ZHANG EPIGENETIC MORTALITY INDEX; FDR Q < 0.05: DUNEDINPOAM). THESE ASSOCIATIONS WERE INDEPENDENT OF DEMOGRAPHIC AND PSYCHOSOCIAL FACTORS, BUT SUBSTANTIALLY ATTENUATED AFTER ADJUSTING FOR HEALTH-RELATED BEHAVIORS (DRINKING, SMOKING, PHYSICAL ACTIVITY, AND BMI). PURPOSE SHOWED NO SIGNIFICANT ASSOCIATION WITH 9 "FIRST-GENERATION" DNAM EPIGENETIC CLOCKS TRAINED ON CHRONOLOGICAL AGE. OLDER ADULTS WITH GREATER PURPOSE IN LIFE SHOW "YOUNGER" DNAM EPIGENETIC AGE ACCELERATION. THESE RESULTS MAY BE DUE IN PART TO ASSOCIATED DIFFERENCES IN HEALTH-RELATED BEHAVIORS. RESULTS SUGGEST NEW OPPORTUNITIES TO REDUCE BIOLOGICAL AGE ACCELERATION BY ENHANCING PURPOSE AND ITS BEHAVIORAL SEQUELAE IN LATE ADULTHOOD.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
12  2777  43 EXTREMELY LOW BIRTH WEIGHT AND ACCELERATED BIOLOGICAL AGING. BACKGROUND AND OBJECTIVES: EXTREMELY LOW BIRTH WEIGHT (ELBW) (<1000 G) SURVIVORS ARE EXPOSED TO ELEVATED LEVELS OF PHYSIOLOGIC STRESS DURING THEIR LIVES AND MAY BE SUSCEPTIBLE TO ACCELERATED AGING. USING THE OLDEST KNOWN LONGITUDINALLY FOLLOWED COHORT OF ELBW SURVIVORS, WE COMPARED BIOLOGICAL AGING IN THIS GROUP USING AN EPIGENETIC CLOCK TO A SAMPLE OF MATCHED NORMAL BIRTH WEIGHT (NBW) (>2500 G) CONTROL PARTICIPANTS. METHODS: BUCCAL CELLS WERE COLLECTED FROM 45 ELBW SURVIVORS AND 49 NBW CONTROL PARTICIPANTS AT 30 TO 35 YEARS OF AGE. EPIGENETIC AGE WAS CALCULATED FROM THE WEIGHTED AVERAGE OF DNA METHYLATION AT 353 CYTOSINE-PHOSPHATE-GUANINE SEQUENCE WITHIN DNA SITES, BY USING THE ILLUMINA INFINIUM HUMAN METHYLATION EPIC 850K BEADCHIP ARRAY. RESULTS: BEFORE AND AFTER STATISTICALLY ADJUSTING FOR NEUROSENSORY IMPAIRMENT AND THE PRESENCE OF CHRONIC HEALTH CONDITIONS, A SIGNIFICANT SEX BY BIRTH WEIGHT GROUP INTERACTION WAS OBSERVED IN THE 353-SITE EPIGENETIC-CLOCK ASSAY (P = .03), WHEREBY ELBW MEN HAD A SIGNIFICANTLY OLDER EPIGENETIC AGE THAN NBW MEN (4.6 YEARS; P = .01). WOMEN BORN AT ELBW WERE NOT FOUND TO BE EPIGENETICALLY OLDER THAN THEIR NBW PEERS. CONCLUSIONS: THE RESULTS OF THIS STUDY SUGGEST THAT PRENATAL EXPOSURES MAY PLAY AN IMPORTANT ROLE IN AGING, AND THAT MEN BORN PRETERM MAY EXPERIENCE ACCELERATED AGING RELATIVE TO THEIR PEERS. WE FURTHER HIGHLIGHT THE NEED TO MONITOR AND PROMOTE THE HEALTH OF PRETERM SURVIVORS, WITH A PARTICULAR FOCUS ON HEALTHY AGING ACROSS THE LIFE SPAN.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
13  6418  31 THE TEMPORAL EXPRESSION OF CIRCULATING MICRORNAS AFTER ACUTE EXPERIMENTAL PAIN IN HUMANS. BACKGROUND: MICRORNAS (MIRNAS) CAN MODULATE SEVERAL BIOLOGICAL SYSTEMS, INCLUDING THE PAIN SYSTEM. THIS STUDY AIMED TO EVALUATE THE TEMPORAL EXPRESSION OF CIRCULATING MIRNAS IN THE PLASMA OF HEALTHY VOLUNTEERS AS A MARKER FOR EPIGENETIC CHANGES BEFORE AND AFTER AN ACUTE, EXPERIMENTAL, PAIN PROVOCATION BY INTRAMUSCULAR HYPERTONIC SALINE INJECTION. METHODS: TWENTY VOLUNTEERS WERE RANDOMLY ALLOCATED INTO TWO GROUPS AND RECEIVED EITHER HYPERTONIC (PAIN) OR ISOTONIC (CONTROL) SALINE INJECTION IN THE FIRST DORSAL INTEROSSEOUS MUSCLE OF THEIR DOMINANT HAND. PAIN INTENSITY WAS CONTINUOUSLY RECORDED FOR 20 MINUTES AFTER INJECTION ON A VAS SCALE FROM 0 TO 100 (0 INDICATES NO PAIN AND 100 THE WORST IMAGINABLE PAIN). BLOOD SAMPLES WERE TAKEN AT BASELINE, 30 MINUTES, 3 HOURS, AND 24 HOURS POST-INJECTION, AND PLASMA WAS SEPARATED. MIRNA EXTRACTS WERE USED FOR RNA SEQUENCING WITH THE ILLUMINA NEXTSEQ PLATFORM. MIRNA TRANSCRIPTS WERE COMPARED BETWEEN THE PAIN AND THE NO-PAIN, CONTROL GROUP AT EVERY TIME POINT. SIGNIFICANT DIFFERENCES WERE CONSIDERED WHEN FOLDS WERE >2 AND THE FALSE DISCOVERY RATE WAS P < 0.05. RESULTS: AFTER 30 MINUTES, 4 MIRNAS WERE SIGNIFICANTLY ALTERED IN THE PAIN GROUP COMPARED TO CONTROLS, WHICH INCREASED TO 24 AFTER 3 HOURS AND TO 42 AFTER 24 HOURS FROM BASELINE (P < 0.0001). TWO MIRNAS WERE CONSISTENTLY UPREGULATED THROUGHOUT THE EXPERIMENT. ENRICHMENT ANALYSIS SHOWED SIGNIFICANT MIRNAS INVOLVED IN BRAIN PERCEPTION OF PAIN, BRAIN SIGNALLING AND RESPONSE TO STIMULI. CONCLUSIONS: THIS EXPLORATORY STUDY IS THE FIRST TO REPORT ON THE TEMPORAL EXPRESSION OF CIRCULATING MIRNAS AFTER AN ACUTE, HUMAN EXPERIMENTAL MUSCLE PAIN MODEL. SIGNIFICANCE: THIS EXPLORATORY STUDY EVALUATED THE TEMPORAL PROFILE OF CIRCULATING MIRNAS IN THE PLASMA OF HEALTHY SUBJECTS AFTER ACUTE EXPERIMENTAL PAIN. SEVERAL MIRNAS WERE ALTERED IN SUBJECTS AT THE TIMES OF FOLLOW-UP AFTER THE ACUTE PAIN MODEL WHEN COMPARED TO CONTROLS. MIRNAS PREVIOUSLY ASSOCIATED WITH PAIN PROCESSES WERE ALTERED IN THE PAIN GROUP. OUR RESULTS, BY SHOWING THE FAST AND PROLONGED MODIFICATIONS OF MIRNA ELICITED BY THE ACUTE EXPERIMENTAL PAIN MODEL, ADD NEW PERSPECTIVES TO THE TOPIC OF EPIGENETICS AND PAIN.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                             
14  1058  31 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
15  1746  27 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
16   325  37 ALLELE-SPECIFIC DNA METHYLATION LEVEL OF FKBP5 IS ASSOCIATED WITH POST-TRAUMATIC STRESS DISORDER. BACKGROUND: FK506-BINDING PROTEIN 5 (FKBP5) BINDS TO GLUCOCORTICOID RECEPTORS AND MODULATES GLUCOCORTICOID SENSITIVITY. THE FKBP5 GENE HAS BEEN IMPLICATED IN THE DYSREGULATION OF HUMAN STRESS RESPONSES, CONTRIBUTING TO THE RISK AND TREATMENT RESPONSE OF STRESS-RELATED DISORDERS. THE PRESENT STUDY EXAMINED WHETHER EPIGENETIC CHANGES IN FKBP5 ARE ASSOCIATED WITH CHRONIC POST-TRAUMATIC STRESS DISORDER (PTSD) STATUS IN THE CONTEXT OF FKBP5 GENETIC VARIATION (RS1360780 POLYMORPHISM) AMONG MALE VETERANS EXPOSED TO COMBAT TRAUMA. METHODS: KOREAN MALE VETERANS WHO SERVED ON ACTIVE DUTY DURING THE VIETNAM WAR WERE CATEGORIZED INTO 2 GROUPS: WITH PTSD (N = 123) AND WITHOUT PTSD (N = 116). THE GENOTYPE OF FKBP5 RS1360780 AND DNA METHYLATION LEVELS OF TWO CPG SITES AT THE FKBP5 INTRON 7 REGION WERE ASSESSED IN PERIPHERAL BLOOD. ANALYSIS OF COVARIANCE WAS PERFORMED TO EXAMINE MAIN AND INTERACTION EFFECTS OF PTSD STATUS AND FKBP5 GENOTYPE ON FKBP5 DNA METHYLATION LEVEL, WITH AGE, TRAUMA LEVELS, AND ALCOHOL USE AS COVARIATES. RESULTS: A SIGNIFICANT MAIN EFFECT OF FKBP5 RS1360780 AND PTSD AND AN INTERACTION EFFECT BETWEEN GENOTYPE AND PTSD STATUS WERE FOUND ON MEAN FKBP5 DNA METHYLATION LEVEL. THE T ALLELE OF RS1360780 WAS ASSOCIATED WITH LOWER FKBP5 METHYLATION LEVEL. IN ADDITION, THE PTSD GROUP SHOWED SIGNIFICANTLY HIGHER METHYLATION THAN DID THE NON-PTSD GROUP AMONG VETERANS CARRYING THE RISK T ALLELE (N = 96), WHILE NO GROUP DIFFERENCE WAS OBSERVED ON METHYLATION LEVELS AMONG VETERANS WITH THE CC GENOTYPE (N = 143). AMONG VETERANS CARRYING THE T ALLELE, FKBP5 METHYLATION LEVELS WERE POSITIVELY CORRELATED WITH THE SEVERITY OF PTSD SYMPTOMS. CONCLUSIONS: THE PRESENT STUDY DEMONSTRATED DIFFERENT FKBP5 METHYLATION LEVELS IN PTSD DEPENDING ON FKBP5 GENETIC VARIATION AMONG VETERANS EXPOSED TO COMBAT TRAUMA. THE PRESENT FINDING SUGGESTS THAT THE GENETIC AND EPIGENETIC MODULATION OF FKBP5 IS INVOLVED IN THE PATHOPHYSIOLOGY OF PTSD. FURTHER LONGITUDINAL RESEARCH INVOLVING PEOPLE EXPOSED TO TRAUMA IS REQUIRED TO UNDERSTAND CAUSAL RELATIONSHIPS OF FKBP5 IN THE DEVELOPMENT AND RECOVERY OF PTSD.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
17  5728  24 SLEEP QUALITY AND METHYLATION STATUS OF SELECTED TUMOR SUPPRESSOR GENES AMONG NURSES AND MIDWIVES. CHRONIC SLEEP RESTRICTION MAY AFFECT METABOLISM, HORMONE SECRETION PATTERNS AND INFLAMMATORY RESPONSES. LIMITED REPORTS SUGGEST ALSO EPIGENETIC EFFECTS, SUCH AS CHANGES IN DNA METHYLATION PROFILES. THE STUDY AIMS TO ASSESS THE POTENTIAL ASSOCIATION BETWEEN POOR SLEEP QUALITY OR SLEEP DURATION AND THE LEVELS OF 5-METHYLCYTOSINE IN THE PROMOTER REGIONS OF SELECTED TUMOR SUPPRESSOR GENES. A CROSS-SECTIONAL STUDY WAS CONDUCTED ON 710 NURSES AND MIDWIVES AGED 40-60 YEARS. DATA FROM INTERVIEWS REGARDING SLEEP HABITS AND POTENTIAL CONFOUNDERS WERE USED. THE METHYLATION STATUS OF TUMOR SUPPRESSOR GENES WAS DETERMINED VIA QMSP REACTIONS USING DNA SAMPLES DERIVED FROM LEUCOCYTES. NO SIGNIFICANT FINDINGS WERE OBSERVED IN THE TOTAL STUDY POPULATION OR IN THE TWO SUBGROUPS OF WOMEN STRATIFIED BY THE CURRENT SYSTEM OF WORK. A BORDERLINE SIGNIFICANCE ASSOCIATION WAS OBSERVED BETWEEN A SHORTER DURATION OF SLEEP AND AN INCREASED METHYLATION LEVEL IN CDKN2A AMONG DAY WORKING NURSES AND MIDWIVES. FURTHER STUDIES ARE WARRANTED TO EXPLORE THIS UNDER-INVESTIGATED TOPIC.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
18  4989  31 PCSK9 IS INCREASED IN CEREBROSPINAL FLUID OF INDIVIDUALS WITH ALCOHOL USE DISORDER. BACKGROUND: RECENT STUDIES HAVE SHOWN THAT ALCOHOL USE AFFECTS THE REGULATION AND EXPRESSION OF PROPROTEIN CONVERTASE SUBTILISIN/KEXIN 9 (PCSK9). WHILE A MAJOR ROLE OF PCSK9 IN HEPATIC FUNCTION AND LIPID REGULATION HAS BEEN CLEARLY ESTABLISHED, OTHER PLEIOTROPIC EFFECTS REMAIN POORLY UNDERSTOOD. EXISTING RESEARCH SUGGESTS A POSITIVE ASSOCIATION BETWEEN PCSK9 EXPRESSION IN THE BRAIN AND PSYCHOPATHOLOGY, WITH INCREASED LEVELS OF PCSK9 IN THE CEREBROSPINAL FLUID (CSF) OF INDIVIDUALS WITH DEMENTIA AND EPIGENETIC MODIFICATIONS OF PCSK9 ASSOCIATED WITH ALCOHOL USE DISORDER (AUD). IN THIS STUDY, WE HYPOTHESIZED THAT CHRONIC ALCOHOL USE WOULD INCREASE PCSK9 EXPRESSION IN CSF. METHODS: PCSK9 LEVELS IN CSF WERE MEASURED IN INDIVIDUALS WITH AUD (N = 42) ADMITTED TO AN INPATIENT REHABILITATION PROGRAM AND CONTROLS (N = 25). CSF SAMPLES IN AUD WERE ASSESSED AT 2 TIME POINTS, AT DAY 5 AND DAY 21 AFTER ADMISSION. FURTHERMORE, PLASMA SAMPLES WERE COLLECTED AND MEASURED FROM THE INDIVIDUALS WITH AUD. RESULTS: PCSK9 IN CSF WAS SIGNIFICANTLY INCREASED IN THE AUD GROUP AT DAY 5 AND DAY 21 COMPARED TO THE CONTROLS (P < 0.0001). PLASMA PCSK9 LEVELS WERE CORRELATED POSITIVELY WITH CSF PCSK9 LEVELS IN AUD (P = 0.0493). CONCLUSIONS: OUR DATA SUGGEST THAT PCSK9 IS ELEVATED IN THE CSF OF INDIVIDUALS WITH AUD, WHICH MAY INDICATE A POTENTIAL ROLE OF PCSK9 IN AUD. ADDITIONAL STUDIES ARE NECESSARY TO FURTHER ELUCIDATE THE FUNCTIONS OF PCSK9 IN THE BRAIN.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
19  1189  33 CORRELATION BETWEEN GLOBAL METHYLATION LEVEL OF PERIPHERAL BLOOD LEUKOCYTES AND SERUM C REACTIVE PROTEIN LEVEL MODIFIED BY MTHFR POLYMORPHISM: A CROSS-SECTIONAL STUDY. BACKGROUND: CHRONIC INFLAMMATORY CONDITIONS ARE ASSOCIATED WITH HIGHER TUMOR INCIDENCE THROUGH EPIGENETIC AND GENETIC ALTERATIONS. HERE, WE FOCUSED ON AN ASSOCIATION BETWEEN AN INFLAMMATION MARKER, C-REACTIVE-PROTEIN (CRP), AND GLOBAL DNA METHYLATION LEVELS OF PERIPHERAL BLOOD LEUKOCYTES. METHODS: THE SUBJECTS WERE 384 HEALTHY JAPANESE WOMEN ENROLLED AS THE CONTROL GROUP OF A CASE-CONTROL STUDY FOR BREAST CANCER CONDUCTED FROM 2001 TO 2005. GLOBAL DNA METHYLATION WAS QUANTIFIED BY LUMINOMETRIC METHYLATION ASSAY (LUMA). RESULTS: WITH ADJUSTMENT FOR LIFESTYLE-RELATED FACTORS, INCLUDING FOLATE INTAKE, THE GLOBAL DNA METHYLATION LEVEL OF PERIPHERAL BLOOD LEUKOCYTES WAS SIGNIFICANTLY BUT WEAKLY INCREASED BY 0.43% PER QUARTILE CATEGORY FOR CRP (P FOR TREND = 0.010). ESTIMATED METHYLATION LEVELS STRATIFIED BY CRP QUARTILE WERE 70.0%, 70.8%, 71.4%, AND 71.3%, RESPECTIVELY. IN ADDITION, INTERACTION BETWEEN POLYMORPHISM OF MTHFR (RS1801133, KNOWN AS C677T) AND CRP WAS SIGNIFICANT (P FOR INTERACTION = 0.046); THE GLOBAL METHYLATION LEVEL WAS SIGNIFICANTLY INCREASED BY 0.61% PER QUARTILE CATEGORY FOR CRP IN THE CT/TT GROUP (THOSE WITH THE MINOR ALLELE T, P FOR TREND = 0.001), WHEREAS NO ASSOCIATION WAS OBSERVED IN THE CC GROUP (WILD TYPE). CONCLUSIONS: OUR STUDY SUGGESTS THAT CRP CONCENTRATION IS WEAKLY ASSOCIATED WITH GLOBAL DNA METHYLATION LEVEL. HOWEVER, THIS ASSOCIATION WAS OBSERVED MORE CLEARLY IN INDIVIDUALS WITH THE MINOR ALLELE OF THE MTHFR MISSENSE SNP RS1801133. BY ELUCIDATING THE COMPLEX MECHANISM OF THE REGULATION OF DNA METHYLATION BY BOTH ACQUIRED AND GENETIC FACTORS, OUR RESULTS MAY BE IMPORTANT FOR CANCER PREVENTION.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
20  2207  44 EPIGENETIC MODIFICATIONS AND GLUCOCORTICOID SENSITIVITY IN MYALGIC ENCEPHALOMYELITIS/CHRONIC FATIGUE SYNDROME (ME/CFS). BACKGROUND: MYALGIC ENCEPHALOMYELITIS/CHRONIC FATIGUE SYNDROME (ME/CFS) IS A DEBILITATING IDIOPATHIC DISEASE CHARACTERIZED BY UNEXPLAINED FATIGUE THAT FAILS TO RESOLVE WITH SUFFICIENT REST. DIAGNOSIS IS BASED ON A LIST OF SYMPTOMS AND EXCLUSION OF OTHER FATIGUE-RELATED HEALTH CONDITIONS. DESPITE A HETEROGENEOUS PATIENT POPULATION, IMMUNE AND HYPOTHALAMIC-PITUITARY-ADRENAL (HPA) AXIS FUNCTION DIFFERENCES, SUCH AS ENHANCED NEGATIVE FEEDBACK TO GLUCOCORTICOIDS, ARE RECURRING FINDINGS IN ME/CFS STUDIES. EPIGENETIC MODIFICATIONS, SUCH AS CPG METHYLATION, ARE KNOWN TO REGULATE LONG-TERM PHENOTYPIC DIFFERENCES AND PREVIOUS WORK BY OUR GROUP FOUND DNA METHYLOME DIFFERENCES IN ME/CFS, HOWEVER THE RELATIONSHIP BETWEEN DNA METHYLOME MODIFICATIONS, CLINICAL AND FUNCTIONAL CHARACTERISTICS ASSOCIATED WITH ME/CFS HAS NOT BEEN EXAMINED. METHODS: WE EXAMINED THE DNA METHYLOME IN PERIPHERAL BLOOD MONONUCLEAR CELLS (PBMCS) OF A LARGER COHORT OF FEMALE ME/CFS PATIENTS USING THE ILLUMINA HUMANMETHYLATION450 BEADCHIP ARRAY. IN PARALLEL TO THE DNA METHYLOME ANALYSIS, WE INVESTIGATED IN VITRO GLUCOCORTICOID SENSITIVITY DIFFERENCES BY STIMULATING PBMCS WITH PHYTOHAEMAGGLUTININ AND SUPPRESSED GROWTH WITH DEXAMETHASONE. WE EXPLORED DNA METHYLATION DIFFERENCES USING BISULFITE PYROSEQUENCING AND STATISTICAL PERMUTATION. LINEAR REGRESSION WAS IMPLEMENTED TO DISCOVER EPIGENOMIC REGIONS ASSOCIATED WITH SELF-REPORTED QUALITY OF LIFE AND NETWORK ANALYSIS OF GENE ONTOLOGY TERMS TO BIOLOGICALLY CONTEXTUALIZE RESULTS. RESULTS: WE DETECTED 12,608 DIFFERENTIALLY METHYLATED SITES BETWEEN ME/CFS PATIENTS AND HEALTHY CONTROLS PREDOMINANTLY LOCALIZED TO CELLULAR METABOLISM GENES, SOME OF WHICH WERE ALSO RELATED TO SELF-REPORTED QUALITY OF LIFE HEALTH SCORES. AMONG ME/CFS PATIENTS, GLUCOCORTICOID SENSITIVITY WAS ASSOCIATED WITH DIFFERENTIAL METHYLATION AT 13 LOCI. CONCLUSIONS: OUR RESULTS INDICATE DNA METHYLATION MODIFICATIONS IN CELLULAR METABOLISM IN ME/CFS DESPITE A HETEROGENEOUS PATIENT POPULATION, IMPLICATING THESE PROCESSES IN IMMUNE AND HPA AXIS DYSFUNCTION IN ME/CFS. MODIFICATIONS TO EPIGENETIC LOCI ASSOCIATED WITH DIFFERENCES IN GLUCOCORTICOID SENSITIVITY MAY BE IMPORTANT AS BIOMARKERS FOR FUTURE CLINICAL TESTING. OVERALL, THESE FINDINGS ALIGN WITH RECENT ME/CFS WORK THAT POINT TOWARDS IMPAIRMENT IN CELLULAR ENERGY PRODUCTION IN THIS PATIENT POPULATION.	2017