1  6270 182 THE OBESOGENIC ENVIRONMENT: EPIGENETIC MODIFICATIONS IN PLACENTAL MELANOCORTIN 4 RECEPTOR GENE CONNECTED TO GESTATIONAL DIABETES AND SMOKING. BACKGROUND: MATERNAL METABOLIC INSULTS AS WELL AS GESTATIONAL DIABETES MELLITUS (GDM) INFLUENCE THE FETAL HEALTH AND MAY AFFECT 'OFFSPRING'S SUSCEPTIBILITY TO CHRONIC DISEASES VIA EPIGENETIC MODIFICATIONS. GDM, THE MOST COMMON METABOLIC DISORDER IN PREGNANCY, CAN BE CONSIDERED THE RESULT OF COMPLEX INTERACTIONS BETWEEN GENETIC AND ENVIRONMENTAL FACTORS. A CRITICAL POINT IN THIS VIEW IS THE IDENTIFICATION OF GENES WHICH ARE EPIGENETICALLY MODIFIED UNDER THE INFLUENCE OF GDM. THE MELANOCORTIN 4 RECEPTOR (MC4R) GENE PLAYS A CRUCIAL ROLE IN NUTRITIONAL HEALTH BY SUPPRESSING APPETITE AND PARTICIPATING IN ENERGY CONTROL REGULATION. THE CORRELATIONS BETWEEN PREGNANT 'WOMEN'S METABOLIC PROFILES AND PLACENTAL EPIGENETIC MODIFICATIONS OF THIS GENE HAVE BEEN POORLY INVESTIGATED. OBJECTIVE: THE AIM OF THIS STUDY WAS TO EVALUATE THE EFFECT OF GDM AND MATERNAL CLINICAL PARAMETERS AT THE THIRD TRIMESTER OF PREGNANCY TO DNA METHYLATION LEVELS IN THE PLACENTA AT CPG SITES OF MC4R GENE. DESIGN AND METHODS: SOCIO-DEMOGRAPHIC AND CLINICAL CHARACTERISTICS, MEDITERRANEAN DIET ADHERENCE, SMOKING HABITS, AND PHYSICAL ACTIVITY WERE ASSESSED AT THE THIRD TRIMESTER OF PREGNANCY OF 60 CAUCASIAN PREGNANT WOMEN, OF WHICH 33 WITH GDM. CLINICAL PARAMETERS OF THE NEWBORNS WERE RECORDED AT BIRTH. MC4R DNA METHYLATION ON MATERNAL AND FETAL SIDES OF THE PLACENTA WAS ANALYZED USING BISULFITE PYROSEQUENCING. RESULTS: MC4R DNA METHYLATION LEVELS AT CPG1 AND CPG2 WERE LOWER ON THE FETAL SIDE OF THE PLACENTA IN GDM-AFFECTED WOMEN THAN IN NON-GDM-AFFECTED RECRUITS (P = 0.033). MOREOVER, DNA METHYLATION LEVELS ON THE MATERNAL SIDE AT CPG1 WERE POSITIVELY RELATED TO GLUCOSE CONCENTRATION AT 2-H ORAL GLUCOSE TOLERANCE TEST (OGTT). ON THE OTHER HAND, CPG2 DNA METHYLATION WAS POSITIVELY RELATED TO BOTH 1-H AND 2-H DURING OGTT. MATERNAL DNA METHYLATION LEVEL AT CPG2 WAS ALSO ASSOCIATED WITH LOW DENSITY LIPOPROTEIN CHOLESTEROL (LDL-C) AT THE THIRD TRIMESTER OF PREGNANCY (RHO = 0.340, P < 0.05), WHILE CPG1 METHYLATION WAS NEGATIVELY RELATED TO MATERNAL WEIGHT VARIATIONS AT DELIVERY (RHO = -0.316, P < 0.05). SIGNIFICANT ASSOCIATIONS BETWEEN MC4R DNA METHYLATION ON THE MATERNAL SIDE AND LIPID PROFILE AT THIRD TRIMESTER OF PREGNANCY IN WOMEN SMOKERS WERE FOUND. CONCLUSION: OUR RESULTS SUGGEST THAT MC4R METHYLATION PROFILE IN THE PLACENTA IS RELATED TO MATERNAL METABOLIC AND NUTRITIONAL CONDITIONS, POTENTIALLY AFFECTING FETAL PROGRAMMING AND THE FUTURE METABOLIC HEALTH OF THE NEWBORN.	2022	

2  3179  44 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
3  3117  60 GESTATIONAL DIABETES MELLITUS EPIGENETICALLY AFFECTS GENES PREDOMINANTLY INVOLVED IN METABOLIC DISEASES. OFFSPRING EXPOSED TO GESTATIONAL DIABETES MELLITUS (GDM) HAVE AN INCREASED RISK FOR CHRONIC DISEASES, AND ONE PROMISING MECHANISM FOR FETAL METABOLIC PROGRAMMING IS EPIGENETICS. THEREFORE, WE POSTULATED THAT GDM EXPOSURE IMPACTS THE OFFSPRING'S METHYLOME AND USED AN EPIGENOMIC APPROACH TO EXPLORE THIS HYPOTHESIS. PLACENTA AND CORD BLOOD SAMPLES WERE OBTAINED FROM 44 NEWBORNS, INCLUDING 30 EXPOSED TO GDM. WOMEN WERE RECRUITED AT FIRST TRIMESTER OF PREGNANCY AND FOLLOWED UNTIL DELIVERY. GDM WAS ASSESSED AFTER A 75-G ORAL GLUCOSE TOLERANCE TEST AT 24-28 WEEKS OF PREGNANCY. DNA METHYLATION WAS MEASURED AT>485,000 CPG SITES (INFINIUM HUMANMETHYLATION450 BEADCHIPS). INGENUITY PATHWAY ANALYSIS WAS CONDUCTED TO IDENTIFY METABOLIC PATHWAYS EPIGENETICALLY AFFECTED BY GDM. OUR RESULTS SHOWED THAT 3,271 AND 3,758 GENES IN PLACENTA AND CORD BLOOD, RESPECTIVELY, WERE POTENTIALLY DIFFERENTIALLY METHYLATED BETWEEN SAMPLES EXPOSED OR NOT TO GDM (P-VALUES DOWN TO 1 X 10(-06); NONE REACHED THE GENOME-WIDE SIGNIFICANCE LEVELS), WITH MORE THAN 25% (N = 1,029) BEING COMMON TO BOTH TISSUES. MEAN DNA METHYLATION DIFFERENCES BETWEEN GROUPS WERE 5.7 +/- 3.2% AND 3.4 +/- 1.9% FOR PLACENTA AND CORD BLOOD, RESPECTIVELY. THESE GENES WERE LIKELY INVOLVED IN THE METABOLIC DISEASES PATHWAY (UP TO 115 GENES (11%), P-VALUES FOR PATHWAYS = 1.9 X 10(-13)<P<4.0 X 10(-03); INCLUDING DIABETES MELLITUS P = 4.3 X 10(-11)). AMONG THE DIFFERENTIALLY METHYLATED GENES, 326 IN PLACENTA AND 117 IN CORD BLOOD WERE ALSO ASSOCIATED WITH NEWBORN WEIGHT. OUR RESULTS THEREFORE SUGGEST THAT GDM HAS EPIGENETIC EFFECTS ON GENES PREFERENTIALLY INVOLVED IN THE METABOLIC DISEASES PATHWAY, WITH CONSEQUENCES ON FETAL GROWTH AND DEVELOPMENT, AND PROVIDE SUPPORTIVE EVIDENCE THAT DNA METHYLATION IS INVOLVED IN FETAL METABOLIC PROGRAMMING.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
4  5090  51 PLACENTAL ADIPONECTIN GENE DNA METHYLATION LEVELS ARE ASSOCIATED WITH MOTHERS' BLOOD GLUCOSE CONCENTRATION. GROWING EVIDENCE SUGGESTS THAT EPIGENETIC PROFILE CHANGES OCCURRING DURING FETAL DEVELOPMENT IN RESPONSE TO IN UTERO ENVIRONMENT VARIATIONS COULD BE ONE OF THE MECHANISMS INVOLVED IN THE EARLY DETERMINANTS OF ADULT CHRONIC DISEASES. IN THIS STUDY, WE TESTED WHETHER MATERNAL GLYCEMIC STATUS IS ASSOCIATED WITH THE ADIPONECTIN GENE (ADIPOQ) DNA METHYLATION PROFILE IN PLACENTA TISSUE, IN MATERNAL CIRCULATING BLOOD CELLS, AND IN CORD BLOOD CELLS. WE FOUND THAT LOWER DNA METHYLATION LEVELS IN THE PROMOTER OF ADIPOQ ON THE FETAL SIDE OF THE PLACENTA WERE CORRELATED WITH HIGHER MATERNAL GLUCOSE LEVELS DURING THE SECOND TRIMESTER OF PREGNANCY (2-H GLUCOSE AFTER THE ORAL GLUCOSE TOLERANCE TEST; R(S) </= -0.21, P < 0.05). LOWER DNA METHYLATION LEVELS ON THE MATERNAL SIDE OF THE PLACENTA WERE ASSOCIATED WITH HIGHER INSULIN RESISTANCE INDEX (HOMEOSTASIS MODEL ASSESSMENT OF INSULIN RESISTANCE) DURING THE SECOND AND THIRD TRIMESTERS OF PREGNANCY (R(S) </= -0.27, P < 0.05). FINALLY, LOWER DNA METHYLATION LEVELS WERE ASSOCIATED WITH HIGHER MATERNAL CIRCULATING ADIPONECTIN LEVELS THROUGHOUT PREGNANCY (R(S) </= -0.26, P < 0.05). IN CONCLUSION, THE ADIPOQ DNA METHYLATION PROFILE WAS ASSOCIATED WITH MATERNAL GLUCOSE STATUS AND WITH MATERNAL CIRCULATING ADIPONECTIN CONCENTRATION. BECAUSE ADIPONECTIN IS SUSPECTED TO HAVE INSULIN-SENSITIZING PROPRIETIES, THESE EPIGENETIC ADAPTATIONS HAVE THE POTENTIAL TO INDUCE SUSTAINED GLUCOSE METABOLISM CHANGES IN THE MOTHER AND OFFSPRING LATER IN LIFE.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
5  3452  34 HYPERTENSIVE DISORDERS OF PREGNANCY SHARE COMMON CFDNA METHYLATION PROFILES. HYPERTENSIVE DISORDERS OF PREGNANCY (HDP) CONTRIBUTE SUBSTANTIALLY TO PERINATAL MORBIDITY AND MORTALITY. EPIGENETIC CHANGES POINT TOWARDS CARDIO-METABOLIC DYSREGULATION FOR THESE VASCULAR DISORDERS. IN EARLY PREGNANCY, EPIGENETIC CHANGES USING CELL FREE DNA (CFDNA) ARE LARGELY UNEXPLORED. WE AIMED TO INVESTIGATE THESE IN HDP BETWEEN 11 AND 14 WEEKS OF GESTATION BY ANALYSIS OF CFDNA METHYLATION PROFILES IN PATIENTS WITH HYPERTENSIVE DISORDERS. WE IDENTIFIED PATIENTS WITHOUT CHRONIC HYPERTENSION BUT WITH SUBSEQUENT DEVELOPMENT OF PREECLAMPSIA (PE) (N = 11), WITH CHRONIC HYPERTENSION (HT) BUT WITHOUT PE DEVELOPMENT (N = 14), AND LACKING BOTH PE AND HT (N = 422). WE MATCHED PATIENTS ACCORDING TO PE RISK FACTORS INTO THREE GROUPS (N = 5 EACH GROUP): (1) PE: NO HT BUT PE DEVELOPMENT, (2) HT: CHRONIC HYPERTENSION BUT NO PE AND (3) CONTROL: NO PE OR HT. WE SUCCESSFULLY OPTIMIZED OUR CFDNA ISOLATION PROCESS PRIOR TO WHOLE GENOME BISULFITE SEQUENCING. ANALYSIS OF CFDNA METHYLATION CHANGES INDICATE A COMMON PREDISPOSITION IN PE AND HT GROUPS, CHIEFLY OF MATERNAL ORIGIN. ASSESSMENT OF SIGNIFICANT DIFFERENTIALLY METHYLATED REGIONS AND ANNOTATED GENES POINT TOWARDS A COMMON CARDIOVASCULAR PREDISPOSITION IN PREECLAMPSIA AND HYPERTENSION GROUPS IN THE FIRST TRIMESTER. WE POSTULATE THE PIVOTAL ROLE OF THE MATERNAL CARDIOVASCULAR SYSTEM IN HDP, WHICH IS ALREADY EVIDENT IN THE FIRST TRIMESTER.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
6  4504  38 MOTHER'S PRE-PREGNANCY BMI AND PLACENTAL CANDIDATE MIRNAS: FINDINGS FROM THE ENVIRONAGE BIRTH COHORT. THERE IS INCREASING EVIDENCE THAT THE PREDISPOSITION FOR DEVELOPMENT OF CHRONIC DISEASES ARISES AT THE EARLIEST TIMES OF LIFE. IN THIS CONTEXT, MATERNAL PRE-PREGNANCY WEIGHT MIGHT MODIFY FETAL METABOLISM AND THE CHILD'S PREDISPOSITION TO DEVELOP DISEASE LATER IN LIFE. THE AIM OF THIS STUDY IS TO INVESTIGATE THE ASSOCIATION BETWEEN MATERNAL PRE-PREGNANCY BODY MASS INDEX (BMI) AND MIRNA ALTERATIONS IN PLACENTAL TISSUE AT BIRTH. IN 211 MOTHER-NEWBORN PAIRS FROM THE ENVIRONAGE BIRTH COHORT, WE ASSESSED PLACENTAL EXPRESSION OF SEVEN MIRNAS IMPORTANT IN CRUCIAL CELLULAR PROCESSES IMPLICATED IN ADIPOGENESIS AND/OR OBESITY. MULTIPLE LINEAR REGRESSION MODELS WERE USED TO ADDRESS THE ASSOCIATIONS BETWEEN PRE-PREGNANCY BMI AND PLACENTAL CANDIDATE MIRNA EXPRESSION. MATERNAL PRE-PREGNANCY BMI AVERAGED (+/-SD) 23.9 (+/-4.1) KG/M(2). IN NEWBORN GIRLS (NOT IN BOYS) PLACENTAL MIR-20A, MIR-34A AND MIR-222 EXPRESSION WAS LOWER WITH HIGHER MATERNAL PRE-PREGNANCY BMI. IN ADDITION, THE ASSOCIATION BETWEEN MATERNAL PRE-PREGNANCY BMI AND PLACENTAL EXPRESSION OF THESE MIRNAS IN GIRLS WAS MODIFIED BY GESTATIONAL WEIGHT GAIN. THE LOWER EXPRESSION OF THESE MIRNAS IN PLACENTA IN ASSOCIATION WITH PRE-PREGNANCY BMI, WAS ONLY EVIDENT IN MOTHERS WITH LOW WEIGHT GAIN (<14 KG). THE PLACENTAL EXPRESSION OF MIR-20A, MIR-34A, MIR-146A, MIR-210 AND MIR-222 MAY PROVIDE A SEX-SPECIFIC BASIS FOR EPIGENETIC EFFECTS OF PRE-PREGNANCY BMI.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
7  3166  52 GROCERY DELIVERY TO SUPPORT HEALTHY WEIGHT GAIN AMONG PREGNANT YOUNG WOMEN WITH LOW INCOME: PROTOCOL FOR A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: EXCESSIVE WEIGHT GAIN DURING PREGNANCY IS ASSOCIATED WITH COMPLICATIONS FOR BOTH THE MOTHER AND HER INFANT INCLUDING GESTATIONAL DIABETES, HYPERTENSIVE DISORDERS, OPERATIVE DELIVERY, AND LONG-TERM OBESITY. A HEALTHY DIET DURING PREGNANCY PROMOTES HEALTHY GESTATIONAL WEIGHT GAIN AND DETERMINES FETAL EPIGENETIC PROGRAMMING IN INFANTS THAT IMPACTS RISK FOR FUTURE CHRONIC DISEASE. OBJECTIVE: THIS PROJECT WILL EXAMINE THE IMPACT OF GROCERY DELIVERY DURING PREGNANCY ON THE WEIGHT, DIET, AND HEALTH OUTCOMES OF YOUNG PREGNANT WOMEN AND THEIR INFANTS. METHODS: A THREE-ARM RANDOMIZED CONTROLLED TRIAL DESIGN WILL BE PERFORMED. A TOTAL OF 855 YOUNG PREGNANT WOMEN, AGED 14-24 YEARS, FROM ACROSS THE STATE OF MICHIGAN WILL BE ENROLLED AND RANDOMIZED EQUALLY INTO THE THREE STUDY ARMS. PARTICIPANTS IN ARM ONE (CONTROL) WILL RECEIVE USUAL CARE FROM THE SPECIAL SUPPLEMENTAL NUTRITION PROGRAM FOR WOMEN, INFANTS, AND CHILDREN (WIC); ARM TWO WILL RECEIVE WIC PLUS BIWEEKLY GROCERY DELIVERY; AND ARM THREE WILL RECEIVE WIC PLUS BIWEEKLY GROCERY AND UNSWEETENED BEVERAGE DELIVERY. WEIGHT WILL BE ASSESSED WEEKLY DURING PREGNANCY, AND TOTAL PREGNANCY WEIGHT GAIN WILL BE CATEGORIZED AS ABOVE, BELOW, OR WITHIN GUIDELINES. ADDITIONALLY, DIETARY INTAKE WILL BE ASSESSED AT THREE TIME POINTS (BASELINE, SECOND TRIMESTER, AND THIRD TRIMESTER), AND PREGNANCY OUTCOMES WILL BE EXTRACTED FROM MEDICAL RECORDS. THE APPROPRIATENESS OF PREGNANCY WEIGHT GAIN, DIET QUALITY, AND OCCURRENCE OF POOR OUTCOMES WILL BE COMPARED BETWEEN GROUPS USING STANDARD PRACTICES FOR MULTINOMIAL REGRESSION AND CONFOUNDER ADJUSTMENT. RESULTS: THIS STUDY WAS FUNDED IN APRIL 2021, DATA COLLECTION STARTED IN DECEMBER 2021, AND DATA COLLECTION IS EXPECTED TO BE CONCLUDED IN 2026. CONCLUSIONS: THIS STUDY WILL TEST WHETHER GROCERY DELIVERY OF HEALTHY FOODS IMPROVES WEIGHT, DIET, AND PREGNANCY OUTCOMES OF YOUNG MOMS WITH LOW INCOME. THE FINDINGS WILL INFORM POLICIES AND PRACTICES THAT PROMOTE A HEALTHY DIET DURING PREGNANCY, WHICH HAS MULTIGENERATIONAL IMPACTS ON HEALTH. TRIAL REGISTRATION: CLINICALTRIALS.GOV NCT05000645; HTTPS://CLINICALTRIALS.GOV/CT2/SHOW/NCT05000645. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/40568.	2022	
                                                                                                                                                                                                                                                                      
8  2149  38 EPIGENETIC MARKERS TO PREDICT CONVERSION FROM GESTATIONAL DIABETES TO TYPE 2 DIABETES. CONTEXT: LIFESTYLE FACTORS MEDIATE EPIGENETIC CHANGES THAT CAN CAUSE CHRONIC DISEASES. ALTHOUGH ANIMAL AND LABORATORY STUDIES LINK EPIGENETIC CHANGES TO DIABETES, EPIGENETIC INFORMATION IN WOMEN WITH GESTATIONAL DIABETES (GDM) AND TYPE 2 DIABETES IS LACKING. OBJECTIVE: THIS STUDY SOUGHT TO MEASURE EPIGENETIC MARKERS ACROSS PREGNANCY AND EARLY POSTPARTUM AND IDENTIFY MARKERS THAT COULD BE USED AS PREDICTORS FOR CONVERSION FROM GDM TO TYPE 2 DIABETES. DESIGN: GLOBAL HISTONE H3 DIMETHYLATION WAS MEASURED IN WHITE BLOOD CELLS AT THREE TIME POINTS: 30 WK GESTATION, 8-10 WK POSTPARTUM, AND 20 WK POSTPARTUM, FROM FOUR GROUPS OF WOMEN WITH AND WITHOUT DIABETES. SETTING AND PARTICIPANTS: A TOTAL OF 39 PARTICIPANTS (SIX TO NINE IN EACH GROUP) WERE RECRUITED INCLUDING: NONDIABETIC WOMEN; WOMEN WITH GDM WHO DEVELOPED POSTPARTUM TYPE 2 DIABETES; WOMEN WITH GDM WITHOUT POSTPARTUM TYPE 2 DIABETES; AND WOMEN WITH TYPE 2 DIABETES. MAIN OUTCOME MEASURE: PERCENTAGES OF DIMETHYLATION OF H3 HISTONES RELATIVE TO TOTAL H3 HISTONE METHYLATION WERE COMPARED BETWEEN DIABETIC/NONDIABETIC GROUPS USING APPROPRIATE COMPARATIVE STATISTICS. RESULTS: H3K27 DIMETHYLATION WAS 50-60% LOWER AT 8-10 AND 20 WK POSTPARTUM IN WOMEN WITH GDM WHO DEVELOPED TYPE 2 DIABETES, COMPARED WITH NONDIABETIC WOMEN. H3K4 DIMETHYLATION WAS 75% LOWER AT 8-10 WK POSTPARTUM IN WOMEN WITH GDM WHO SUBSEQUENTLY DEVELOPED TYPE 2 DIABETES COMPARED WITH WOMEN WHO HAD GDM WHO DID NOT. CONCLUSIONS: THE PERCENTAGE OF DIMETHYLATION OF HISTONES H3K27 AND H3K4 VARIED WITH DIABETIC STATE AND HAS THE POTENTIAL AS A PREDICTIVE TOOL TO IDENTIFY WOMEN WHO WILL CONVERT FROM GDM TO TYPE 2 DIABETES.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
9  4061  41 MATERNAL ADVERSITIES DURING PREGNANCY AND CORD BLOOD OXYTOCIN RECEPTOR (OXTR) DNA METHYLATION. THE AIM OF THIS STUDY WAS TO INVESTIGATE WHETHER MATERNAL ADVERSITIES AND CORTISOL LEVELS DURING PREGNANCY PREDICT CORD BLOOD DNA METHYLATION OF THE OXYTOCIN RECEPTOR (OXTR). WE COLLECTED CORD BLOOD OF 39 BABIES BORN TO MOTHERS PARTICIPATING IN A CROSS-SECTIONAL STUDY (N = 100) CONDUCTED IN BASEL, SWITZERLAND (2007-10). MOTHERS COMPLETED THE INVENTORY OF LIFE EVENTS (SECOND TRIMESTER: T2), THE EDINBURGH POSTNATAL DEPRESSION SCALE (EPDS, THIRD TRIMESTER: T3), THE TRIER INVENTORY OF CHRONIC STRESS (TICS-K, 1-3 WEEKS POSTPARTUM) AND PROVIDED SALIVA SAMPLES (T2, T3) FOR MATERNAL CORTISOL PROFILES, AS COMPUTED BY THE AREA UNDER THE CURVE WITH RESPECT TO GROUND (AUCG) OR INCREASE (AUCI) FOR THE CORTISOL AWAKENING RESPONSE (CAR) AND FOR DIURNAL CORTISOL PROFILES (DAY). OXTR DNA METHYLATION WAS QUANTIFIED USING SEQUENOM EPITYPER. THE NUMBER OF STRESSFUL LIFE EVENTS (P = 0.032), EPDS SCORE (P = 0.007) AND CORTISOL AUCGS AT T2 (CAR: P = 0.020; DAY: P = 0.024) WERE NEGATIVELY ASSOCIATED WITH OXTR DNA METHYLATION. OUR FINDINGS SUGGEST THAT DISTINCT PRENATAL ADVERSITIES PREDICT DECREASED DNA METHYLATION IN A GENE THAT IS RELEVANT FOR CHILDBIRTH, MATERNAL BEHAVIOR AND WELLBEING OF MOTHER AND OFFSPRING. IF A REDUCED OXTR METHYLATION INCREASES OXTR EXPRESSION, OUR FINDINGS COULD SUGGEST AN EPIGENETIC ADAPTATION TO AN ADVERSE EARLY ENVIRONMENT.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
10   518  57 ASSOCIATIONS BETWEEN ANTIBIOTIC EXPOSURE DURING PREGNANCY, BIRTH WEIGHT AND ABERRANT METHYLATION AT IMPRINTED GENES AMONG OFFSPRING. OBJECTIVES: LOW BIRTH WEIGHT (LBW) HAS BEEN ASSOCIATED WITH COMMON ADULT-ONSET CHRONIC DISEASES, INCLUDING OBESITY, CARDIOVASCULAR DISEASE, TYPE II DIABETES AND SOME CANCERS. THE ETIOLOGY OF LBW IS MULTI-FACTORIAL. HOWEVER, RECENT EVIDENCE SUGGESTS EXPOSURE TO ANTIBIOTICS MAY ALSO INCREASE THE RISK OF LBW. THE MECHANISMS UNDERLYING THIS ASSOCIATION ARE UNKNOWN, ALTHOUGH EPIGENETIC MECHANISMS ARE HYPOTHESIZED. IN THIS STUDY, WE EVALUATED THE ASSOCIATION BETWEEN MATERNAL ANTIBIOTIC USE AND LBW AND EXAMINED THE POTENTIAL ROLE OF ALTERED DNA METHYLATION THAT CONTROLS GROWTH REGULATORY IMPRINTED GENES IN THESE ASSOCIATIONS. METHODS: BETWEEN 2009-2011, 397 PREGNANT WOMEN WERE ENROLLED AND FOLLOWED UNTIL DELIVERY. PRENATAL ANTIBIOTIC USE WAS ASCERTAINED THROUGH MATERNAL SELF-REPORT. IMPRINTED GENES METHYLATION LEVELS WERE MEASURED AT DIFFERENTIALLY METHYLATED REGIONS (DMRS) USING BISULFITE PYROSEQUENCING. GENERALIZED LINEAR MODELS WERE USED TO EXAMINE ASSOCIATIONS AMONG ANTIBIOTIC USE, BIRTH WEIGHT AND DMR METHYLATION FRACTIONS. RESULTS: AFTER ADJUSTING FOR INFANT GENDER, RACE/ETHNICITY, MATERNAL BODY MASS INDEX, DELIVERY ROUTE, GESTATIONAL WEIGHT GAIN, GESTATIONAL AGE AT DELIVERY, FOLIC ACID INTAKE, PHYSICAL ACTIVITY, MATERNAL SMOKING AND PARITY, ANTIBIOTIC USE DURING PREGNANCY WAS ASSOCIATED WITH 138 G LOWER BIRTH WEIGHT COMPARED WITH NON-ANTIBIOTIC USE (BETA-COEFFICIENT=-132.99, S.E.=50.70, P=0.008). THESE ASSOCIATIONS WERE STRONGEST IN NEWBORNS OF WOMEN WHO REPORTED ANTIBIOTIC USE OTHER THAN PENICILLINS (BETA-COEFFICIENT=-135.57, S.E.=57.38, P=0.02). METHYLATION AT FIVE DMRS, IGF2 (P=0.05), H19 (P=0.15), PLAGL1 (P=0.01), MEG3 (P=0.006) AND PEG3 (P=0.08), WAS ASSOCIATED WITH MATERNAL ANTIBIOTIC USE; AMONG THESE, ONLY METHYLATION AT THE PLAGL1 DMR WAS ALSO ASSOCIATED WITH BIRTH WEIGHT. CONCLUSION: WE REPORT AN INVERSE ASSOCIATION BETWEEN IN UTERO EXPOSURE TO ANTIBIOTICS AND LOWER INFANT BIRTH WEIGHT AND PROVIDE THE FIRST EMPIRICAL EVIDENCE SUPPORTING IMPRINTED GENE PLASTICITY IN THESE ASSOCIATIONS.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
11   649  49 BIRTHWEIGHT, MATERNAL WEIGHT TRAJECTORIES AND GLOBAL DNA METHYLATION OF LINE-1 REPETITIVE ELEMENTS. LOW BIRTHWEIGHT, PREMATURE BIRTH, INTRAUTERINE GROWTH RETARDATION, AND MATERNAL MALNUTRITION HAVE BEEN RELATED TO AN INCREASED RISK OF CARDIOVASCULAR DISEASE, TYPE 2 DIABETES MELLITUS, OBESITY, AND NEUROPSYCHIATRIC DISORDERS LATER IN LIFE. CONVERSELY, HIGH BIRTHWEIGHT HAS BEEN LINKED TO FUTURE RISK OF CANCER. GLOBAL DNA METHYLATION ESTIMATED BY THE METHYLATION OF REPETITIVE SEQUENCES IN THE GENOME IS AN INDICATOR OF SUSCEPTIBILITY TO CHRONIC DISEASES. WE USED DATA AND BIOSPECIMENS FROM AN EPIGENETIC BIRTH COHORT TO EXPLORE THE ASSOCIATION BETWEEN TRAJECTORIES OF FETAL AND MATERNAL WEIGHT AND LINE-1 METHYLATION IN 319 MOTHER-CHILD DYADS. NEWBORNS WITH LOW OR HIGH BIRTHWEIGHT HAD SIGNIFICANTLY LOWER LINE-1 METHYLATION LEVELS IN THEIR CORD BLOOD COMPARED TO NORMAL WEIGHT INFANTS AFTER ADJUSTING FOR GESTATIONAL AGE, SEX OF THE CHILD, MATERNAL AGE AT DELIVERY, AND MATERNAL SMOKING DURING PREGNANCY (P = 0.007 AND P = 0.036, RESPECTIVELY), BUT THE MAGNITUDE OF THE DIFFERENCE WAS SMALL. INFANTS BORN PREMATURELY ALSO HAD LOWER LINE-1 METHYLATION LEVELS IN CORD BLOOD COMPARED TO TERM INFANTS, AND THIS DIFFERENCE, THOUGH SMALL, WAS STATISTICALLY SIGNIFICANT (P = 0.004). WE DID NOT FIND IMPORTANT ASSOCIATIONS BETWEEN MATERNAL PREPREGNANCY BMI OR GESTATIONAL WEIGHT GAIN AND GLOBAL METHYLATION OF THE CORD BLOOD OR FETAL PLACENTAL TISSUE. IN CONCLUSION, WE FOUND SIGNIFICANT DIFFERENCES IN CORD BLOOD LINE-1 METHYLATION AMONG NEWBORNS WITH LOW AND HIGH BIRTHWEIGHT AS WELL AS AMONG PREMATURELY BORN INFANTS. FUTURE STUDIES MAY ELUCIDATE WHETHER CHROMOSOMAL INSTABILITIES OR OTHER FUNCTIONAL CONSEQUENCES OF THESE CHANGES CONTRIBUTE TO THE INCREASED RISK OF CHRONIC DISEASES AMONG INDIVIDUALS WITH THESE CHARACTERISTICS.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
12  4066  42 MATERNAL AND PATERNAL PERICONCEPTIONAL NUTRITION AS AN INDICATOR OF OFFSPRING METABOLIC SYNDROME RISK IN LATER LIFE THROUGH EPIGENETIC IMPRINTING: A SYSTEMATIC REVIEW. AIMS: THIS REVIEW EXAMINED WHETHER MATERNAL AND PATERNAL PERICONCEPTIONAL NUTRITION EFFECTS AN OFFSPRING'S LIKELIHOOD OF DEVELOPING CHRONIC METABOLIC RELATED CONDITIONS DUE TO EPIGENETIC IMPRINTING. METHODS: A LITERATURE SEARCH WAS CONDUCTED IN MULTIPLE SCIENCE DATABASES AND LIMITED TO STUDIES PUBLISHED AFTER 2012, IN ENGLISH LANGUAGE AND PEER REVIEWED. THE DATA FROM SELECTED ARTICLES WERE EXTRACTED AND A QUALITATIVE APPROACH WAS EMPLOYED DUE TO HETEROGENEITY OF RESULTS. RESULTS: NEWBORNS FROM OBESE FATHERS SHOWED ALTERED METHYLATION OVERALL AND SIGNIFICANT HYPOMETHYLATION AT THE INSULIN-LIKE GROWTH FACTOR 2 (IGF2) GENE. HIGH MATERNAL PRE-PREGNANCY BODY MASS INDEX (BMI) WAS ASSOCIATED WITH ALTERED OFFSPRING DNA METHYLATION LEVELS AND GESTATIONAL DIABETES MELLITUS INDUCED SIGNIFICANTLY INCREASED METHYLATION LEVELS IN OFFSPRING. GESTATIONAL WEIGHT GAIN WAS NOT ASSOCIATED WITH DIFFERENTIALLY METHYLATED CORD BLOOD. BIRTH WEIGHT WAS HIGHER IN OFFSPRING EXPOSED TO FAMINE IN EARLY GESTATION. OFFSPRING BORN POST MATERNAL BARIATRIC SURGERY SHOWED A LOWER PERCENTAGE OF BODY FAT AND IMPROVED FASTING INSULIN LEVELS COMPARED TO SIBLINGS BORN PRE-MATERNAL BARIATRIC SURGERY. CONCLUSIONS: THE AVAILABLE EVIDENCE SUGGESTS THAT POOR MATERNAL AND PATERNAL PERICONCEPTIONAL NUTRITION CAN INCREASE THE RISK OF METABOLIC SYNDROME IN OFFSPRING, THROUGH EPIGENETIC IMPRINTING. POTENTIAL PARENTS SHOULD BE ADVISED THAT MAINTAINING A HEALTHY DIET AND BMI IS LIKELY TO REDUCE THE RISK OF METABOLIC SYNDROME IN OFFSPRING.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
13  6279  45 THE PLACENTA AS A TARGET OF EPIGENETIC ALTERATIONS IN WOMEN WITH GESTATIONAL DIABETES MELLITUS AND POTENTIAL IMPLICATIONS FOR THE OFFSPRING. GESTATIONAL DIABETES MELLITUS (GDM) IS A PREGNANCY COMPLICATION FIRST DETECTED IN THE SECOND OR THIRD TRIMESTER IN WOMEN THAT DID NOT SHOW EVIDENT GLUCOSE INTOLERANCE OR DIABETES BEFORE GESTATION. IN 2019, THE INTERNATIONAL DIABETES FEDERATION REPORTED THAT 15.8% OF LIVE BIRTHS WERE AFFECTED BY HYPERGLYCEMIA DURING PREGNANCY, OF WHICH 83.6% WERE DUE TO GESTATIONAL DIABETES MELLITUS, 8.5% WERE DUE TO DIABETES FIRST DETECTED IN PREGNANCY, AND 7.9% WERE DUE TO DIABETES DETECTED BEFORE PREGNANCY. GDM INCREASES THE SUSCEPTIBILITY TO DEVELOPING CHRONIC DISEASES FOR BOTH THE MOTHER AND THE BABY LATER IN LIFE. UNDER GDM CONDITIONS, THE INTRAUTERINE ENVIRONMENT BECOMES HYPERGLYCEMIC, WHILE ALSO SHOWING HIGH CONCENTRATIONS OF FATTY ACIDS AND PROINFLAMMATORY CYTOKINES, PRODUCING MORPHOLOGICAL, STRUCTURAL, AND MOLECULAR MODIFICATIONS IN THE PLACENTA, AFFECTING ITS FUNCTION; THESE ALTERATIONS MAY PREDISPOSE THE BABY TO DISEASE IN ADULT LIFE. MOLECULAR ALTERATIONS INCLUDE EPIGENETIC MECHANISMS SUCH AS DNA AND RNA METHYLATION, CHROMATIN REMODELING, HISTONE MODIFICATIONS, AND EXPRESSION OF NONCODING RNAS (NCRNAS). THE PLACENTA IS A UNIQUE ORGAN THAT ORIGINATES ONLY IN PREGNANCY, AND ITS MAIN FUNCTION IS COMMUNICATION BETWEEN THE MOTHER AND THE FETUS, ENSURING HEALTHY DEVELOPMENT. THUS, THIS REVIEW PROVIDES UP-TO-DATE INFORMATION REGARDING TWO OF THE BEST-DOCUMENTED (EPIGENETIC) MECHANISMS (DNA METHYLATION AND MIRNA EXPRESSION) ALTERED IN THE HUMAN PLACENTA UNDER GDM CONDITIONS, AS WELL AS POTENTIAL IMPLICATIONS FOR THE OFFSPRING.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
14   520  43 ASSOCIATIONS BETWEEN MATERNAL PRENATAL STRESS, METHYLATION CHANGES IN IGF1 AND IGF2, AND BIRTH WEIGHT. MATERNAL STRESS HAS BEEN LINKED TO LOW BIRTH WEIGHT IN NEWBORNS. ONE POTENTIAL PATHWAY INVOLVES EPIGENETIC CHANGES AT CANDIDATE GENES THAT MAY MEDIATE THE EFFECTS OF PRENATAL MATERNAL STRESS ON BIRTH WEIGHT. THIS RELATIONSHIP HAS BEEN DOCUMENTED IN STRESS-RELATED GENES, SUCH AS NR3C1. THERE IS LESS LITERATURE EXPLORING THE EFFECT OF STRESS ON GROWTH-RELATED GENES. IGF1 AND IGF2 HAVE BEEN IMPLICATED IN FETAL GROWTH AND DEVELOPMENT, THOUGH VIA DIFFERENT MECHANISMS AS IGF2 IS UNDER IMPRINTING CONTROL. IN THIS STUDY, WE TESTED FOR ASSOCIATIONS BETWEEN PRENATAL STRESS, METHYLATION OF IGF1 AND IGF2, AND BIRTH WEIGHT. A TOTAL OF 24 MOTHER-NEWBORN DYADS IN THE DEMOCRATIC REPUBLIC OF CONGO WERE ENROLLED. ETHNOGRAPHIC INTERVIEWS WERE CONDUCTED WITH MOTHERS AT DELIVERY TO GATHER CULTURALLY RELEVANT WAR-RELATED AND CHRONIC STRESSORS. DNA METHYLATION DATA WERE GENERATED FROM MATERNAL VENOUS, CORD BLOOD AND PLACENTAL TISSUE SAMPLES. MULTIVARIATE REGRESSIONS WERE USED TO TEST FOR ASSOCIATIONS BETWEEN STRESS MEASURES, DNA METHYLATION AND BIRTH WEIGHT IN EACH OF THE THREE TISSUE TYPES. WE FOUND AN ASSOCIATION BETWEEN IGF2 METHYLATION IN MATERNAL BLOOD AND BIRTH WEIGHT. PREVIOUS LITERATURE ON THE RELATIONSHIP BETWEEN IGF2 METHYLATION AND BIRTH WEIGHT HAS FOCUSED ON METHYLATION AT KNOWN DIFFERENTIALLY METHYLATED REGIONS IN CORD BLOOD OR PLACENTAL SAMPLES. OUR FINDINGS INDICATE THERE MAY BE LINKS BETWEEN THE MATERNAL EPIGENOME AND LOW BIRTH WEIGHT THAT RELY ON MECHANISMS OUTSIDE KNOWN IMPRINTING PATHWAYS. IT THUS MAY BE IMPORTANT TO CONSIDER THE EFFECT OF MATERNAL EXPOSURES AND EPIGENETIC PROFILES ON BIRTH WEIGHT EVEN IN THE SETTING OF MATERNALLY IMPRINTED GENES SUCH AS IGF2.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
15  5192  53 PRENATAL ENVIRONMENTAL STRESSORS AND DNA METHYLATION LEVELS IN PLACENTA AND PERIPHERAL TISSUES OF MOTHERS AND NEONATES EVALUATED BY APPLYING ARTIFICIAL NEURAL NETWORKS. EXPOSURE TO ENVIRONMENTAL STRESSORS DURING PREGNANCY PLAYS AN IMPORTANT ROLE IN INFLUENCING SUBSEQUENT SUSCEPTIBILITY TO CERTAIN CHRONIC DISEASES THROUGH THE MODULATION OF EPIGENETIC MECHANISMS, INCLUDING DNA METHYLATION. OUR AIM WAS TO EXPLORE THE CONNECTIONS BETWEEN ENVIRONMENTAL EXPOSURES DURING GESTATION WITH DNA METHYLATION OF PLACENTAL CELLS, MATERNAL AND NEONATAL BUCCAL CELLS BY APPLYING ARTIFICIAL NEURAL NETWORKS (ANNS). A TOTAL OF 28 MOTHER-INFANT PAIRS WERE ENROLLED. DATA ON GESTATIONAL EXPOSURE TO ADVERSE ENVIRONMENTAL FACTORS AND ON MOTHER HEALTH STATUS WERE COLLECTED THROUGH THE ADMINISTRATION OF A QUESTIONNAIRE. DNA METHYLATION ANALYSES AT BOTH GENE-SPECIFIC AND GLOBAL LEVEL WERE ANALYZED IN PLACENTAS, MATERNAL AND NEONATAL BUCCAL CELLS. IN THE PLACENTA, THE CONCENTRATIONS OF VARIOUS METALS AND DIOXINS WERE ALSO ANALYZED. ANALYSIS OF ANNS REVEALED THAT SUBOPTIMAL BIRTH WEIGHT IS ASSOCIATED WITH PLACENTAL H19 METHYLATION, MATERNAL STRESS DURING PREGNANCY WITH METHYLATION LEVELS OF NR3C1 AND BDNF IN PLACENTAS AND MOTHER'S BUCCAL DNA, RESPECTIVELY, AND EXPOSURE TO AIR POLLUTANTS WITH MATERNAL MGMT METHYLATION. ASSOCIATIONS WERE ALSO OBSERVED BETWEEN PLACENTAL CONCENTRATIONS OF LEAD, CHROMIUM, CADMIUM AND MERCURY WITH METHYLATION LEVELS OF OXTR IN PLACENTAS, HSD11B2 IN MATERNAL BUCCAL CELLS AND PLACENTAS, MECP2 IN NEONATAL BUCCAL CELLS, AND MTHFR IN MATERNAL BUCCAL CELLS. FURTHERMORE, DIOXIN CONCENTRATIONS WERE ASSOCIATED WITH PLACENTAL RELN, NEONATAL HSD11B2 AND MATERNAL H19 GENE METHYLATION LEVELS. CURRENT RESULTS SUGGEST THAT EXPOSURE OF PREGNANT WOMEN TO ENVIRONMENTAL STRESSORS DURING PREGNANCY COULD INDUCE ABERRANT METHYLATION LEVELS IN GENES LINKED TO SEVERAL PATHWAYS IMPORTANT FOR EMBRYOGENESIS IN BOTH THE PLACENTA, POTENTIALLY AFFECTING FOETAL DEVELOPMENT, AND IN THE PERIPHERAL TISSUES OF MOTHERS AND INFANTS, POTENTIALLY PROVIDING PERIPHERAL BIOMARKERS OF ENVIRONMENTAL EXPOSURE.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
16  4065  42 MATERNAL AND GESTATIONAL INFLUENCES ON CHILDHOOD BLOOD PRESSURE. EXPOSURES THAT CONTRIBUTE TO A SUB-OPTIMAL INTRAUTERINE ENVIRONMENT CAN HAVE AN EFFECT ON THE DEVELOPING FETUS. IMPAIRED FETAL GROWTH THAT RESULTS IN LOW BIRTH WEIGHT IS AN ESTABLISHED RISK FACTOR FOR CARDIO-METABOLIC DISORDERS LATER IN LIFE. RECENT EPIDEMIOLOGIC AND PROSPECTIVE COHORT STUDIES THAT INCLUDE THE MATERNAL AND GESTATIONAL PERIOD HAVE IDENTIFIED MATERNAL AND GESTATIONAL CONDITIONS THAT CONFER INCREASED RISK FOR SUBSEQUENT CARDIO-METABOLIC DISORDERS IN THE ABSENCE OF LOW BIRTH WEIGHT. MATERNAL PRE-CONCEPTION HEALTH STATUS, INCLUDING CHRONIC OBESITY AND TYPE 2 DIABETES, INCREASE RISK FOR CHILDHOOD OBESITY AND OBESITY-RELATED HIGHER BLOOD PRESSURE (BP) IN CHILD OFFSPRING. MATERNAL GESTATIONAL EXPOSURES, INCLUDING GESTATIONAL DIABETES, GESTATIONAL HYPERTENSION, AND PREECLAMPSIA, ARE ASSOCIATED WITH HIGHER BP IN OFFSPRING. OTHER MATERNAL EXPOSURES SUCH AS CIGARETTE SMOKE AND AIR POLLUTION ALSO INCREASE RISK FOR HIGHER BP IN CHILD OFFSPRING. RECENT, BUT LIMITED, DATA INDICATE THAT ASSISTED REPRODUCTIVE TECHNOLOGIES CAN BE ASSOCIATED WITH HYPERTENSION IN CHILDHOOD, DESPITE OTHERWISE NORMAL GESTATION AND HEALTHY NEWBORN. GESTATIONAL EXPOSURES ASSOCIATED WITH HIGHER BP IN CHILDHOOD CAN BE RELATED TO FAMILIAL LIFESTYLE FACTORS, GENETICS, OR EPIGENETIC MODIFICATION OF FETAL DEOXYRIBONUCLEIC ACID (DNA). THESE FACTORS, OR COMBINATION OF FACTORS, AS WELL AS OTHER ADVERSE INTRAUTERINE CONDITIONS, COULD INDUCE FETAL PROGRAMING LEADING TO HEALTH CONSEQUENCES IN LATER LIFE. CURRENT AND DEVELOPING RESEARCH WILL PROVIDE ADDITIONAL INSIGHTS ON GESTATIONAL EXPOSURES AND FETAL ADJUSTMENTS THAT INCREASE RISK FOR HIGHER BP LEVELS IN CHILDHOOD.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
17  4010  44 LOW MATERNAL ADHERENCE TO A MEDITERRANEAN DIET IS ASSOCIATED WITH INCREASE IN METHYLATION AT THE MEG3-IG DIFFERENTIALLY METHYLATED REGION IN FEMALE INFANTS. DIET IS DICTATED BY THE SURROUNDING ENVIRONMENT, AS FOOD ACCESS AND AVAILABILITY MAY CHANGE DEPENDING ON WHERE ONE LIVES. MATERNAL DIET DURING PREGNANCY IS AN IMPORTANT PART OF THE IN UTERO ENVIRONMENT, AND MAY AFFECT THE EPIGENOME. STUDIES LOOKING AT OVERALL DIET PATTERN IN RELATION TO DNA METHYLATION HAVE BEEN LACKING. THE MEDITERRANEAN DIET IS KNOWN FOR ITS HEALTH BENEFITS, INCLUDING DECREASED INFLAMMATION, WEIGHT LOSS, AND MANAGEMENT OF CHRONIC DISEASES. THIS STUDY ASSESSES THE ASSOCIATION BETWEEN MATERNAL ADHERENCE TO A MEDITERRANEAN DIET PATTERN DURING PREGNANCY AND INFANT DNA METHYLATION AT BIRTH. MEDITERRANEAN DIET ADHERENCE IN EARLY PREGNANCY WAS MEASURED IN 390 WOMEN ENROLLED IN THE NEWBORN EPIGENETIC STUDY, AND DNA METHYLATION WAS ASSESSED IN THEIR INFANTS AT BIRTH. MULTINOMIAL LOGISTIC REGRESSION WAS USED TO ASSESS THE ASSOCIATION BETWEEN ADHERENCE TO A MEDITERRANEAN DIET AND INFANT METHYLATION AT THE MEG3, MEG3-IG, PLEIOMORPHIC ADENOMA GENE-LIKE 1, INSULIN-LIKE GROWTH FACTOR 2 GENE, H19, MESODERM-SPECIFIC TRANSCRIPT, NEURONATIN, PATERNALLY EXPRESSED GENE 3, SARCOGLYCAN AND PATERNALLY EXPRESSED GENE 10 REGIONS, MEASURED BY PYROSEQUENCING. INFANTS OF MOTHERS WITH A LOW ADHERENCE TO A MEDITERRANEAN DIET HAD A GREATER ODDS OF HYPO-METHYLATION AT THE MEG3-IG DIFFERENTIALLY METHYLATED REGION (DMR). SEX-STRATIFIED MODELS SHOWED THAT THIS ASSOCIATION WAS PRESENT IN GIRLS ONLY. THIS STUDY PROVIDES EARLY EVIDENCE ON THE ASSOCIATION BETWEEN OVERALL DIET PATTERN AND METHYLATION AT THE 9 DMRS INCLUDED IN THIS STUDY, AND SUGGESTS THAT MATERNAL DIET CAN HAVE A SEX-SPECIFIC IMPACT ON INFANT DNA METHYLATION AT SPECIFIC IMPRINTED DMRS.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
18  2077  41 EPIGENETIC DISRUPTION OF PLACENTAL GENES BY CHRONIC MATERNAL CAFETERIA DIET IN RATS. MATERNAL DIET HAS IMPACT ON REPRODUCTION, FETAL DEVELOPMENT AND OFFSPRING BEHAVIOR, ALTHOUGH MOLECULAR MECHANISMS REMAINED UNKNOWN. OUR AIMS WERE TO ASSESS (1) THE EFFECTS OF A CAFETERIA (CAF) DIET (WESTERN DIET HABITS) ON FEMALE REPRODUCTIVE PERFORMANCE, FETAL AND PLACENTAL PARAMETERS ON GESTATIONAL DAY 21 AND LITTER SIZE AND PUP WEIGHT AT BIRTH; AND (2) PLACENTAL MESSENGER RNA (MRNA) EXPRESSION AND EPIGENETIC REGULATION OF INSULIN-LIKE GROWTH FACTOR (IGF) AND VASCULAR ENDOTHELIAL GROWTH FACTOR (VEGF) AND THEIR RECEPTORS. FEMALE WISTAR RATS WERE FED WITH CONTROL OR CAF DIET FROM WEANING UNTIL PARTURITION. AT WEEK 14 AFTER DIETS STARTED, FEMALES WERE MATED AND HALF OF THE ANIMALS WERE EUTHANIZED ON GESTATIONAL DAY 21 TO EVALUATE REPRODUCTIVE PARAMETERS INCLUDING THE PREGNANCY RATE, NUMBER OF CORPORA LUTEA, IMPLANTATION SITES AND RESORPTION SITES. MOREOVER, FETAL WEIGHT AND LENGTH, PLACENTAL WEIGHT, AND PLACENTAL INDEX WERE RECORDED. PLACENTAS WERE COLLECTED FOR MRNA QUANTIFICATION AND DNA METHYLATION ANALYSIS. THE REMAINING ANIMALS WERE ALLOWED TO GIVE BIRTH AND THE NUMBER AND WEIGHT OF THE PUPS WERE EVALUATED. CAF DIET DID NOT AFFECT REPRODUCTIVE PERFORMANCE OR FETAL WEIGHT AND LENGTH. HOWEVER, CAF-FED ANIMALS SHOWED A DECREASE IN PLACENTAL WEIGHT AND INDEX AND THE PUPS EXHIBITED A LOW BIRTH WEIGHT. ADDITIONALLY, WE FOUND AN UPREGULATION OF IGF2 AND A DOWN REGULATION OF VEGF PLACENTAL MRNA EXPRESSION IN CAF DAMS, ASSOCIATED WITH METHYLATION STATUS CHANGES OF THEIR PROMOTERS. WE CONCLUDE THAT FEMALE CHRONIC CAF DIET CONSUMPTION IMPAIRS FETO-PLACENTAL DEVELOPMENT AND COULD BE EXPLAINED BY AN EPIGENETIC DISRUPTION OF IGF AND VEGF SYSTEMS.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
19  3118  51 GESTATIONAL DIABETES MELLITUS: GENETIC FACTORS, EPIGENETIC ALTERATIONS, AND MICROBIAL COMPOSITION. GESTATIONAL DIABETES MELLITUS (GDM) IS A COMMON METABOLIC DISORDER, USUALLY DIAGNOSED DURING THE THIRD TRIMESTER OF PREGNANCY THAT USUALLY DISAPPEARS AFTER DELIVERY. IN GDM, THE EXCESS OF GLUCOSE, FATTY ACIDS, AND AMINO ACIDS RESULTS IN FOETUSES LARGE FOR GESTATIONAL AGE. HYPERGLYCAEMIA AND INSULIN RESISTANCE ACCELERATE THE METABOLISM, RAISING THE OXYGEN DEMAND, AND CREATING CHRONIC HYPOXIA AND INFLAMMATION. WOMEN WHO EXPERIENCED GDM AND THEIR OFFSPRING ARE AT RISK OF DEVELOPING TYPE-2 DIABETES, OBESITY, AND OTHER METABOLIC OR CARDIOVASCULAR CONDITIONS LATER IN LIFE. GENETIC FACTORS MAY PREDISPOSE THE DEVELOPMENT OF GDM; HOWEVER, THEY DO NOT ACCOUNT FOR ALL GDM CASES; LIFESTYLE AND DIET ALSO PLAY IMPORTANT ROLES IN GDM DEVELOPMENT BY MODULATING EPIGENETIC SIGNATURES AND THE BODY'S MICROBIAL COMPOSITION; THEREFORE, THIS IS A CONDITION WITH A COMPLEX, MULTIFACTORIAL AETIOLOGY. IN THIS CONTEXT, WE REVISED PUBLISHED REPORTS DESCRIBING GDM-ASSOCIATED SINGLE-NUCLEOTIDE POLYMORPHISMS (SNPS), DNA METHYLATION AND MICRORNA EXPRESSION IN DIFFERENT TISSUES (SUCH AS PLACENTA, UMBILICAL CORD, ADIPOSE TISSUE, AND PERIPHERAL BLOOD), AND MICROBIAL COMPOSITION IN THE GUT, ORAL CAVITY, AND VAGINA FROM PREGNANT WOMEN WITH GDM, AS WELL AS THE BACTERIAL COMPOSITION OF THE OFFSPRING. ALTOGETHER, THESE REPORTS INDICATE THAT A NUMBER OF SNPS ARE ASSOCIATED TO GDM PHENOTYPES AND MAY PREDISPOSE THE DEVELOPMENT OF THE DISEASE. HOWEVER, EXTRINSIC FACTORS (LIFESTYLE, NUTRITION) MODULATE, THROUGH EPIGENETIC MECHANISMS, THE RISK OF DEVELOPING THE DISEASE, AND SOME ASSOCIATION EXISTS BETWEEN THE MICROBIAL COMPOSITION WITH GDM IN AN ORGAN-SPECIFIC MANNER. GENES, EPIGENETIC SIGNATURES, AND MICROBIOTA COULD BE TRANSFERRED TO THE OFFSPRING, INCREASING THE POSSIBILITY OF DEVELOPING CHRONIC DEGENERATIVE CONDITIONS THROUGH POSTNATAL LIFE.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
20  6724  42 VITAMIN D: EFFECTS ON PREGNANCY, MATERNAL, FETAL AND POSTNATAL OUTCOMES. A HIGH PREVALENCE OF VITAMIN D DEFICIENCY AND ITS NEGATIVE CONSEQUENCES FOR HEALTH IS IDENTIFIED AS AREA OF PRIMARY CONCERN FOR SCIENTISTS AND CLINICIANS WORLDWIDE. VITAMIN D DEFICIENCY AFFECTS NOT ONLY BONE HEALTH BUT MANY SOCIALLY SIGNIFICANT ACUTE AND CHRONIC DISEASES. OBSERVATIONAL STUDIES SUPPORT THAT PREGNANT AND LACTATING WOMEN, CHILDREN AND TEENAGERS REPRESENT THE HIGH RISK GROUPS FOR DEVELOPING VITAMIN D DEFICIENCY. CURRENT EVIDENCE HIGHLIGHTS A CRUCIAL ROLE OF VITAMIN D IN PROVIDING THE FETAL LIFE-SUPPORT SYSTEM AND FETUS DEVELOPMENT, INCLUDING IMPLANTATION, PLACENTAL FORMATION, INTRA- AND POSTPARTUM PERIODS. HYPOVITAMINOSIS D DURING PREGNANCY IS ASSOCIATED WITH A HIGHER INCIDENCE OF PLACENTAL INSUFFICIENCY, SPONTANEOUS ABORTIONS AND PRETERM BIRTH, PREECLAMPSIA, GESTATIONAL DIABETES, IMPAIRED FETAL AND CHILDHOOD GROWTH, INCREASED RISK OF AUTOIMMUNE DISEASES FOR OFFSPRINGS. POTENTIAL MECHANISMS FOR THE OBSERVED ASSOCIATIONS CONTAIN METABOLIC, IMMUNOMODULATORY AND ANTIINFLAMMATORY EFFECTS OF VITAMIN D. EPIGENETIC MODIFICATIONS IN VITAMIN D-ASSOCIATED GENES AND FETAL PROGRAMMING ARE OF PARTICULAR INTEREST. THE CONCEPT OF PREVENTING VITAMIN D DEFICIENCY IS ACTIVELY DISCUSSED, INCLUDING SUPPLEMENTATION IN DIFFERENT ETHNIC GROUPS, REQUIRED DOSES, TIME OF INITIATION AND THERAPY DURATION, INFLUENCE ON GESTATION AND CHILDBIRTH. AN ADEQUATE SUPPLY OF VITAMIN D DURING PREGNANCY IMPROVES THE MATERNAL AND FETAL OUTCOMES, SHORT AND LONG TERM HEALTH OF THE OFFSPRING. STILL CURRENT DATA ON RELATIONSHIP BETWEEN MATERNAL VITAMIN D STATUS AND PREGNANCY OUTCOMES REMAINS CONTROVERSIAL. THE LARGE OBSERVATIONAL AND INTERVENTIONAL RANDOMIZED CONTROL TRIALS ARE REQUIRED TO CREATE EVIDENCE-BASED GUIDELINES FOR THE SUPPLEMENTATION OF VITAMIN D IN PREGNANT AND LACTATING WOMEN.	2018