1  4086 134 MATERNAL OBESITY DISRUPTS THE METHIONINE CYCLE IN BABOON PREGNANCY. MATERNAL INTAKE OF DIETARY METHYL-MICRONUTRIENTS (E.G. FOLATE, CHOLINE, BETAINE AND VITAMIN B-12) DURING PREGNANCY IS ESSENTIAL FOR NORMAL MATERNAL AND FETAL METHIONINE METABOLISM, AND IS CRITICAL FOR IMPORTANT METABOLIC PROCESSES INCLUDING THOSE INVOLVED IN DEVELOPMENTAL PROGRAMMING. MATERNAL OBESITY AND NUTRIENT EXCESS DURING PREGNANCY INFLUENCE DEVELOPMENTAL PROGRAMMING POTENTIALLY PREDISPOSING ADULT OFFSPRING TO A VARIETY OF CHRONIC HEALTH PROBLEMS. IN THE PRESENT STUDY, WE HYPOTHESIZED THAT MATERNAL OBESITY WOULD DYSREGULATE THE MATERNAL AND FETAL METHIONINE CYCLE. TO TEST THIS HYPOTHESIS, WE DEVELOPED A NULLIPAROUS BABOON OBESITY MODEL FED A HIGH FAT, HIGH ENERGY DIET (HF-HED) PRIOR TO AND DURING GESTATION, AND EXAMINED METHIONINE CYCLE BIOMARKERS (E.G., CIRCULATING CONCENTRATIONS OF HOMOCYSTEINE, METHIONINE, CHOLINE, BETAINE, KEY AMINO ACIDS, FOLATE, AND VITAMIN B-12). ANIMALS WERE GROUP HOUSED ALLOWING FULL PHYSICAL ACTIVITY AND SOCIAL INTERACTION. MATERNAL PREPREGNANCY PERCENT BODY FAT WAS 5% IN CONTROLS AND 19% IN HF-HED MOTHERS, WHILE FETAL WEIGHT WAS 16% LOWER IN OFFSPRING OF HF-HED MOTHERS AT TERM. MATERNAL AND FETAL HOMOCYSTEINE WERE HIGHER, WHILE MATERNAL AND FETAL VITAMIN B-12 AND BETAINE WERE LOWER IN THE HF-HED GROUP. ELEVATIONS IN CIRCULATING MATERNAL FOLATE WERE EVIDENT IN THE HF-HED GROUP INDICATING IMPAIRED FOLATE METABOLISM (METHYL-TRAP) AS A CONSEQUENCE OF MATERNAL VITAMIN B-12 DEPLETION. FINALLY, FETAL METHIONINE, GLYCINE, SERINE, AND TAURINE WERE LOWER IN THE HF-HED FETUSES. THESE DATA SHOW THAT MATERNAL OBESITY DISTURBS THE METHIONINE CYCLE IN PRIMATE PREGNANCY, PROVIDING A MECHANISM FOR THE EPIGENETIC CHANGES OBSERVED AMONG OBESE PREGNANT WOMEN AND SUGGESTING DIAGNOSTIC AND THERAPEUTIC OPPORTUNITIES IN HUMAN PREGNANCIES COMPLICATED BY OBESITY.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
2  1853  28 ELEVATED METHIONINE FLUX DRIVES PYROPTOSIS EVASION IN PERSISTER CANCER CELLS. INDUCTION OF CELL DEATH REPRESENTS A PRIMARY GOAL OF MOST ANTICANCER TREATMENTS. DESPITE THE EFFICACY OF SUCH APPROACHES, A SMALL POPULATION OF "PERSISTERS" DEVELOP EVASION STRATEGIES TO THERAPY-INDUCED CELL DEATH. WHILE PREVIOUS STUDIES HAVE IDENTIFIED MECHANISMS OF RESISTANCE TO APOPTOSIS, THE MECHANISMS BY WHICH PERSISTERS DAMPEN OTHER FORMS OF CELL DEATH, SUCH AS PYROPTOSIS, REMAIN TO BE ELUCIDATED. PYROPTOSIS IS A FORM OF INFLAMMATORY CELL DEATH THAT INVOLVES FORMATION OF MEMBRANE PORES, ION GRADIENT IMBALANCE, WATER INFLOW, AND MEMBRANE RUPTURE. HEREIN, WE INVESTIGATE MECHANISMS BY WHICH CANCER PERSISTERS RESIST PYROPTOSIS, SURVIVE, THEN PROLIFERATE IN THE PRESENCE OF TYROSINE KINASE INHIBITORS (TKI). LUNG, PROSTATE, AND ESOPHAGEAL CANCER PERSISTER CELLS REMAINING AFTER TREATMENTS EXHIBITED SEVERAL HALLMARKS INDICATIVE OF PYROPTOSIS RESISTANCE. THE INFLAMMATORY ATTRIBUTES OF PERSISTERS INCLUDED CHRONIC ACTIVATION OF INFLAMMASOME, STING, AND TYPE I INTERFERONS. COMPREHENSIVE METABOLOMIC CHARACTERIZATION UNCOVERED THAT TKI-INDUCED PYROPTOTIC PERSISTERS DISPLAY HIGH METHIONINE CONSUMPTION AND EXCESSIVE TAURINE PRODUCTION. ELEVATED METHIONINE FLUX OR EXOGENOUS TAURINE PRESERVED PLASMA MEMBRANE INTEGRITY VIA OSMOLYTE-MEDIATED EFFECTS. INCREASED DEPENDENCY ON METHIONINE FLUX DECREASED THE LEVEL OF ONE CARBON METABOLISM INTERMEDIATE S-(5'-ADENOSYL)-L-HOMOCYSTEINE, A DETERMINANT OF CELL METHYLATION CAPACITY. THE CONSEQUENT INCREASE IN METHYLATION POTENTIAL INDUCED DNA HYPERMETHYLATION OF GENES REGULATING METAL ION BALANCE AND INTRINSIC IMMUNE RESPONSE. THIS ENABLED THWARTING TKI RESISTANCE BY USING THE HYPOMETHYLATING AGENT DECITABINE. IN SUMMARY, THE EVOLUTION OF RESISTANCE TO PYROPTOSIS CAN OCCUR VIA A STEPWISE PROCESS OF PHYSICAL ACCLIMATION AND EPIGENETIC CHANGES WITHOUT EXISTING OR RECURRENT MUTATIONS. SIGNIFICANCE: METHIONINE ENABLES CANCER CELLS TO PERSIST BY EVADING PYROPTOTIC OSMOTIC LYSIS, WHICH LEADS TO GENOME-WIDE HYPERMETHYLATION THAT ALLOWS PERSISTERS TO GAIN PROLIFERATIVE ADVANTAGES.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
3  3648  32 INCREASED RELATIVE ABUNDANCE OF RUMINOCCOCUS IS ASSOCIATED WITH REDUCED CARDIOVASCULAR RISK IN AN OBESE POPULATION. BACKGROUND: OBESITY IS A COMPLEX DISEASE WITH UNDERLYING GENETIC, ENVIRONMENTAL, PSYCHOLOGICAL, PHYSIOLOGICAL, MEDICAL, AND EPIGENETIC FACTORS. OBESITY CAN CAUSE VARIOUS DISORDERS, INCLUDING CARDIOVASCULAR DISEASES (CVDS), THAT ARE AMONG THE MOST PREVALENT CHRONIC CONDITIONS IN QATAR. RECENT STUDIES HAVE HIGHLIGHTED THE SIGNIFICANT ROLES OF THE GUT MICROBIOME IN IMPROVING THE PATHOLOGY OF VARIOUS DISEASES, INCLUDING OBESITY. THUS, IN THIS STUDY, WE AIMED TO INVESTIGATE THE EFFECTS OF DIETARY INTAKE AND GUT MICROBIAL COMPOSITION IN MODULATING THE RISK OF CVD DEVELOPMENT IN OBESE QATARI ADULTS. METHODS: WE ENROLLED 46 ADULT SUBJECTS (18-65 YEARS OF AGE) WHO WERE CLASSIFIED BASED ON THEIR CVD RISK SCORES, CALCULATED USING THE FRAMINGHAM FORMULA, INTO A CVD NO-RISK GROUP (SCORE OF <10%, N = 36) AND CVD RISK GROUP (SCORE OF >/=10%, N = 10). FOR EACH STUDY SUBJECT, WE MEASURED THE GUT MICROBIAL COMPOSITION WITH A 16S RDNA SEQUENCING METHOD THAT TARGETED THE V3-V4 REGION USING ILLUMINA MISEQ, AND THEIR NUTRITIONAL STATUS WAS RECORDED BASED ON 24-H DIETARY RECALL. DIETARY INTAKE, BACTERIAL TAXA SUMMARY, DIVERSITY INDEX, MICROBIAL MARKERS, PATHWAY ANALYSIS, AND NETWORK CORRELATION WERE DETERMINED FOR THE STUDY SUBJECTS. RESULTS: THE CVD RISK GROUP SHOWED A LOWER INTAKE OF VITAMIN D, REDUCED RELATIVE ABUNDANCE OF GENERA RUMINOCOCCUS AND BIFIDOBACTERIUM, NO CHANGE IN BACTERIAL DIVERSITY, AND HIGHER LEVELS OF TAURINE, HYPOTAURINE, AND LIPOIC ACID METABOLISM THAN THE CVD NO-RISK GROUP. BESIDES, THE RELATIVE ABUNDANCE OF GENUS RUMINOCOCCUS WAS POSITIVELY CORRELATED WITH THE INTAKE OF PROTEIN, MONOUNSATURATED FAT, VITAMIN A, AND VITAMIN D. CONCLUSION: TAKEN TOGETHER, OUR RESULTS SUGGEST THAT THE GENUS RUMINOCOCCUS COULD BE USED AS A MICROBIAL MARKER, AND ITS REDUCED RELATIVE ABUNDANCE COULD MEDIATE THE RISK OF CVDS IN THE OBESE QATARI POPULATION.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
4  3817  21 INTRAUTERINE PROGRAMMING OF THE ENDOCRINE PANCREAS. EPIDEMIOLOGICAL STUDIES HAVE REVEALED STRONG RELATIONSHIPS BETWEEN POOR FOETAL GROWTH AND SUBSEQUENT DEVELOPMENT OF THE METABOLIC SYNDROME. PERSISTING EFFECTS OF EARLY MALNUTRITION BECOME TRANSLATED INTO PATHOLOGY, THEREBY DETERMINE CHRONIC RISK FOR DEVELOPING GLUCOSE INTOLERANCE AND DIABETES. THESE EPIDEMIOLOGICAL OBSERVATIONS IDENTIFY THE PHENOMENA OF FOETAL PROGRAMMING WITHOUT EXPLAINING THE UNDERLYING MECHANISMS THAT ESTABLISH THE CAUSAL LINK. ANIMAL MODELS HAVE BEEN ESTABLISHED AND STUDIES HAVE DEMONSTRATED THAT REDUCTION IN THE AVAILABILITY OF NUTRIENTS DURING FOETAL DEVELOPMENT PROGRAMS THE ENDOCRINE PANCREAS AND INSULIN-SENSITIVE TISSUES. WHATEVER THE TYPE OF FOETAL MALNUTRITION, WHETHER THERE ARE NOT ENOUGH CALORIES OR PROTEIN IN FOOD OR AFTER PLACENTAL DEFICIENCY, MALNOURISHED PUPS ARE BORN WITH A DEFECT IN THEIR BETA-CELL POPULATION THAT WILL NEVER COMPLETELY RECOVER, AND INSULIN-SENSITIVE TISSUES WILL BE DEFINITIVELY ALTERED. DESPITE THE SIMILAR ENDPOINT, DIFFERENT CELLULAR AND PHYSIOLOGICAL MECHANISMS ARE PROPOSED. HORMONES OPERATIVE DURING FOETAL LIFE LIKE INSULIN ITSELF, INSULIN-LIKE GROWTH FACTORS AND GLUCOCORTICOIDS, AS WELL AS SPECIFIC MOLECULES LIKE TAURINE, OR ISLET VASCULARIZATION WERE IMPLICATED AS POSSIBLE FACTORS AMPLIFYING THE DEFECT. THE MOLECULAR MECHANISMS RESPONSIBLE FOR INTRAUTERINE PROGRAMMING OF THE BETA CELLS ARE STILL ELUSIVE, BUT TWO HYPOTHESES RECENTLY EMERGED: THE FIRST ONE IMPLIES PROGRAMMING OF MITOCHONDRIA AND THE SECOND, EPIGENETIC REGULATION.	2007	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
5  6363  22 THE ROLE OF LNCRNA TUG1 IN OBESITY-RELATED DISEASES. AS THE LIVING STANDARDS OF PEOPLE ARE INCREASINGLY IMPROVED, OBESITY HAS BECOME A HOTSPOT IN OUR DAILY LIFE. OBESITY HAS BEEN FOUND AS A CHRONIC AND RECURRENT DISEASE WITH SERIOUS ADVERSE CONSEQUENCES. OVER THE PAST FEW YEARS, SEVERAL ARTICLES INDICATED THAT LONG NON-CODING RNA TAURINE INCREASED GENE 1 (LNCRNA TUG1), A USEFUL RNA, WHICH WAS INDICATED TO SHOW A RELATIONSHIP TO OBESITY- RELATED DISEASE OCCURRENCE AND DEVELOPMENT. EXOSOMES ARE RECOGNIZED AS AN EMERGING RESEARCH FIELD THAT INCLUDES SUBSTANCES ACTIVELY INVOLVED IN REGULATING THE MOLECULAR MECHANISMS OF DISEASE. THIS REVIEW SUMMARIZES THE CURRENT RELEVANT TUG1 IN DIFFERENT MOLECULAR PATHWAYS OF OBESITYASSOCIATED DISEASES, THE CORRELATION BETWEEN EXOSOMES AND TUG1, OR OBESITY-ASSOCIATED DISEASES. THE AIM IS TO EXPLORE TUG1 AS A NOVEL TARGET FOR OBESITY, WHICH CAN DEEPEN THE KNOWLEDGE REGARDING THE EPIGENETIC REGULATION PATHWAY. FURTHERMORE, IT IS EXPECTED TO FOCUS ON DISEASES ASSOCIATED WITH OBESITY TREATMENT AND DIAGNOSIS.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
6  5090  36 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
7   853  37 CHOLINE, OTHER METHYL-DONORS AND EPIGENETICS. CHOLINE DIETARY INTAKE VARIES SUCH THAT MANY PEOPLE DO NOT ACHIEVE ADEQUATE INTAKES. DIET INTAKE OF CHOLINE CAN MODULATE METHYLATION BECAUSE, VIA BETAINE HOMOCYSTEINE METHYLTRANSFERASE (BHMT), THIS NUTRIENT (AND ITS METABOLITE, BETAINE) REGULATE THE CONCENTRATIONS OF S-ADENOSYLHOMOCYSTEINE AND S-ADENOSYLMETHIONINE. SOME OF THE EPIGENETIC MECHANISMS THAT MODIFY GENE EXPRESSION WITHOUT MODIFYING THE GENETIC CODE DEPEND ON THE METHYLATION OF DNA OR OF HISTONES; AND DIET AVAILABILITY OF CHOLINE AND OTHER METHYL-GROUP DONORS INFLUENCES BOTH OF THESE METHYLATIONS. EXAMPLES OF METHYL-DONOR MEDIATED EPIGENETIC EFFECTS INCLUDE THE CHANGES IN COAT COLOR AND BODY WEIGHT IN OFFSPRING WHEN PREGNANT AGOUTI MICE ARE FED HIGH CHOLINE, HIGH METHYL DIETS; THE CHANGES IN TAIL KINKING IN OFFSPRING WHEN PREGNANT AXIN(FU) MICE ARE FED HIGH CHOLINE, HIGH METHYL DIETS; THE CHANGES IN CDKN3 METHYLATION AND ALTERED BRAIN DEVELOPMENT THAT OCCURS IN OFFSPRING WHEN PREGNANT RODENTS ARE FED LOW CHOLINE DIETS. WHEN CHOLINE METABOLISM IS DISRUPTED BY DELETING THE GENE BHMT, DNA METHYLATION IS AFFECTED (ESPECIALLY IN A REGION OF CHROMOSOME 13), EXPRESSION OF SPECIFIC GENES IS SUPPRESSED, AND LIVER CANCERS DEVELOP. BETTER UNDERSTANDING OF HOW NUTRIENTS SUCH AS CHOLINE AND METHYL-DONORS INFLUENCE EPIGENETIC PROGRAMS HAS IMPORTANCE FOR OUR UNDERSTANDING OF NOT ONLY DEVELOPMENTAL ABNORMALITIES BUT ALSO FOR UNDERSTANDING THE ORIGINS OF CHRONIC DISEASES.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
8  1939  33 EPIDEMIOLOGY AND (PATHO)PHYSIOLOGY OF FOLIC ACID SUPPLEMENT USE IN OBESE WOMEN BEFORE AND DURING PREGNANCY. PRECONCEPTION FOLIC ACID SUPPLEMENT USE IS A WELL-KNOWN METHOD OF PRIMARY PREVENTION OF NEURAL TUBE DEFECTS (NTDS). OBESE WOMEN ARE AT A HIGHER RISK FOR HAVING A CHILD WITH A NTD. AS DIFFERENT INTERNATIONAL RECOMMENDATIONS ON FOLIC ACID SUPPLEMENT USE FOR OBESE WOMEN BEFORE AND DURING PREGNANCY EXIST, THIS NARRATIVE REVIEW PROVIDES AN OVERVIEW OF EPIDEMIOLOGY OF FOLATE DEFICIENCY IN OBESE (PRE)PREGNANT WOMEN, ELABORATES ON POTENTIAL MECHANISMS UNDERLYING FOLATE DEFICIENCY, AND DISCUSSES CONSIDERATIONS FOR THE USAGE OF HIGHER DOSES OF FOLIC ACID SUPPLEMENTS. WOMEN WITH OBESITY MORE OFTEN SUFFER FROM AN ABSOLUTE FOLATE DEFICIENCY, AS THEY ARE LESS COMPLIANT TO PERICONCEPTIONAL FOLIC ACID SUPPLEMENT USE RECOMMENDATIONS. IN ADDITION, THEIR DIETARY FOLATE INTAKE IS LIMITED DUE TO AN UNBALANCED DIET (RELATIVE MALNUTRITION). THE ASSOCIATION OF OBESITY AND NTDS ALSO SEEMS TO BE INDEPENDENT OF FOLATE INTAKE, WITH STUDIES SUGGESTING AN INCREASED NEED OF FOLATE (RELATIVE DEFICIENCY) DUE TO DERANGEMENTS INVOLVED IN OTHER PATHWAYS. THE RELATIVE FOLATE DEFICIENCY, AS A RESULT OF AN INCREASED METABOLIC NEED FOR FOLATE IN OBESE WOMEN, CAN BE DUE TO: (1) LOW-GRADE CHRONIC INFLAMMATION (2) INSULIN RESISTANCE, (3) INOSITOL, AND (4) DYSBIOTIC GUT MICROBIOME, WHICH PLAYS A ROLE IN FOLATE PRODUCTION AND UPTAKE. IN ALL THESE PATHWAYS, THE FOLATE-DEPENDENT ONE-CARBON METABOLISM IS INVOLVED. IN CONCLUSION, SCIENTIFIC EVIDENCE OF THE INVOLVEMENT OF SEVERAL FOLATE-RELATED PATHWAYS IMPLIES TO INCREASE THE RECOMMENDED FOLIC ACID SUPPLEMENTATION IN OBESE WOMEN. HOWEVER, THE PHYSIOLOGICAL UPTAKE OF SYNTHETIC FOLIC ACID IS LIMITED AND SIDE-EFFECTS OF UNMETABOLIZED FOLIC ACID IN MOTHERS AND OFFSPRING, IN PARTICULAR VARIATIONS IN EPIGENETIC (RE)PROGRAMMING WITH LONG-TERM HEALTH EFFECTS, CANNOT BE EXCLUDED. THEREFORE, WE EMPHASIZE ON THE URGENT NEED FOR FURTHER RESEARCH AND PRECONCEPTION PERSONALIZED COUNSELING ON FOLATE STATUS, LIFESTYLE, AND MEDICAL CONDITIONS.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
9  5294  36 PROTECTIVE EFFECTS OF MATERNAL METHYL DONOR SUPPLEMENTATION ON ADULT OFFSPRING OF HIGH FAT DIET-FED DAMS. OBESITY HAS BECOME A GLOBAL PUBLIC HEALTH PROBLEM ASSOCIATED WITH METABOLIC DYSFUNCTION AND CHRONIC DISORDERS. IT HAS BEEN SHOWN THAT THE RISK OF OBESITY AND THE DNA METHYLATION PROFILES OF THE OFFSPRING CAN BE AFFECTED BY MATERNAL NUTRITION, SUCH AS HIGH-FAT DIET (HFD) CONSUMPTION. THE AIM OF THIS STUDY WAS TO INVESTIGATE WHETHER METABOLIC DYSREGULATION AND PHYSIOLOGICAL ABNORMALITIES IN OFFSPRING CAUSED BY MATERNAL HFD CAN BE ALLEVIATED BY THE TREATMENT OF METHYL DONORS DURING PREGNANCY AND LACTATION OF DAMS. FEMALE C57BL/6 MICE WERE ASSIGNED TO SPECIFIC GROUPS AND GIVEN DIFFERENT NUTRIENTS (CONTROL DIET, CONTROL+MET, HFD AND HFD+MET) THROUGHOUT GESTATION AND LACTATION. OFFSPRING OF EACH GROUP WERE WEANED ONTO A CONTROL DIET AT 3 WEEKS OF AGE. PHYSIOLOGICAL (WEIGHT GAIN AND ADIPOSE COMPOSITION) AND METABOLIC (PLASMA BIOCHEMICAL ANALYSES) OUTCOMES WERE ASSESSED IN MALE AND FEMALE ADULT OFFSPRING. EXPRESSION AND DNA METHYLATION PROFILES OF OBESOGENIC-RELATED GENES INCLUDING PPAR GAMMA, FATTY ACID SYNTHASE, LEPTIN AND ADIPONECTIN WERE ALSO DETECTED IN VISCERAL FAT OF OFFSPRING. THE RESULTS SHOWED THAT DIETARY SUPPLEMENTATION WITH METHYL DONORS CAN PREVENT THE ADVERSE EFFECTS OF MATERNAL HFD ON OFFSPRING. CHANGES IN THE EXPRESSION AND DNA METHYLATION OF OBESOGENIC-RELATED GENES INDICATED THAT EPIGENETIC REGULATION MAY CONTRIBUTE TO THE EFFECTS OF MATERNAL DIETARY FACTORS ON OFFSPRING OUTCOMES.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
10  4202  23 METABOLIC SYNDROME IN CHILDREN BORN SMALL-FOR-GESTATIONAL AGE. BEING BORN SMALL-FOR-GESTATIONAL AGE AND A RAPID INCREASE IN WEIGHT DURING EARLY CHILDHOOD AND INFANCY HAS BEEN STRONGLY LINKED WITH CHRONIC DISEASES, INCLUDING METABOLIC SYNDROME, WHICH HAS BEEN RELATED TO INTRAUTERINE LIFE ENVIRONMENT AND LINKED TO EPIGENETIC FETAL PROGRAMMING. METABOLIC SYNDROME INCLUDES WAIST CIRCUMFERENCE >/= 90(TH) PERCENTILE FOR AGE, SEX AND RACE, HIGHER LEVELS OF BLOOD PRESSURE, TRIGLYCERIDES AND FASTING GLUCOSE, AND LOW LEVELS OF HDL-CHOLESTEROL. INSULIN RESISTANCE MAY BE PRESENT AS EARLY AS 1 YEAR OF AGE, AND OBESITY AND/OR TYPE 2 DIABETES ARE MORE PREVALENT IN THOSE BORN SGA THAN THOSE BORN AGA. THE PROGRAMMING OF ADAPTIVE RESPONSES IN CHILDREN BORN SGA INCLUDES AN ASSOCIATION WITH INCREASED BLOOD PRESSURE, CHANGES IN ENDOTHELIAL FUNCTION, ARTERIAL PROPERTIES AND CORONARY DISEASE. EARLY INTERVENTIONS SHOULD BE DIRECTED TO APPROPRIATE MATERNAL NUTRITION, BEFORE AND DURING PREGNANCY, PROMOTION OF BREAST FEEDING, AND PREVENTION OF RAPID WEIGHT GAIN DURING INFANCY, AND TO PROMOTE A HEALTHY LIFESTYLE.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
11  4504  34 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
12  4069  30 MATERNAL CHRONIC FOLATE SUPPLEMENTATION AMELIORATES BEHAVIOR DISORDERS INDUCED BY PRENATAL HIGH-FAT DIET THROUGH METHYLATION ALTERATION OF BDNF AND GRIN2B IN OFFSPRING HIPPOCAMPUS. SCOPE: MATERNAL CONSUMPTION OF A HIGH-FAT DIET (HFD) DURING PREGNANCY INCREASES THE RISK OF BEHAVIORAL PROBLEMS. FOLATE PLAYS AN IMPORTANT ROLE IN NEUROPLASTICITY AND THE PRESERVATION OF NEURONAL INTEGRITY. THIS STUDY AIMS AT DETERMINING THE INFLUENCE OF DIETS SUPPLEMENTED WITH FOLATE ON OFFSPRING BEHAVIOR, AND THE MECHANISMS INVOLVED. METHODS AND RESULTS: FEMALE MICE WERE FED A CONTROL DIET, AN HFD, CONTROL DIET SUPPLEMENTED WITH FOLATE, OR AN HFD SUPPLEMENTED WITH FOLATE FOR 5 WEEKS BEFORE MATING. OPEN FIELD TASK AND ELEVATED PLUS MAZE ARE USED TO EVALUATE THE OFFSPRING BEHAVIORS. RESULTS SHOWED THAT OFFSPRING COGNITIVE PERFORMANCE AND ANXIETY-RELATED BEHAVIORS, INCLUDING THOSE RELATED TO OPEN FIELD EXPLORATION AND ELEVATED PLUS MAZE, WERE SIGNIFICANTLY IMPROVED WHEN DAMS WERE TREATED WITH FOLATE IN PREGNANCY. MOREOVER, THE MATERNAL FOLATE SUPPLEMENT DECREASED BDNF AND GRIN2B METHYLATION AND UPREGULATED THEIR EXPRESSIONS IN THE BRAIN OF OFFSPRING, WHICH WERE ASSOCIATED WITH DECREASING THE EXPRESSION OF DNA METHYLTRANSFERASES COMPARED WITH THOSE DAMS WERE TREATED ONLY HFD IN PREGNANCY. CONCLUSION: MATERNAL FOLATE SUPPLEMENTATION AMELIORATES BEHAVIOR DISORDERS INDUCED BY PRENATAL HIGH-FAT DIET. THE BENEFICIAL EFFECTS WERE ASSOCIATED WITH METHYLATION AND EXPRESSION ALTERATION OF BDNF AND GRIN2B GENES.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
13   649  34 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
14  1373  30 DEVELOPMENTAL ORIGINS OF NONALCOHOLIC FATTY LIVER DISEASE. OBESE PREGNANT WOMEN MAY TRANSMIT THEIR METABOLIC PHENOTYPE TO OFFSPRING, LEADING TO A CYCLE OF OBESITY AND DIABETES OVER GENERATIONS. EARLY CHILDHOOD OBESITY PREDICTS NONALCOHOLIC FATTY LIVER DISEASE (NAFLD), THE MOST COMMON CHRONIC HUMAN LIVER DISEASE. THE FETUS MAY BE VULNERABLE TO STEATOSIS BECAUSE IMMATURE FETAL ADIPOSE DEPOTS ARE NOT AVAILABLE TO BUFFER THE EXCESS TRANSPLACENTAL LIPID DELIVERY IN MATERNAL OBESITY. IN ANIMAL MODELS, IN UTERO HIGH-FAT DIET EXPOSURE RESULTS IN AN INCREASE IN THE ACCUMULATION OF LIVER TRIGLYCERIDES IN OFFSPRING AND INCREASED HEPATIC OXIDATIVE STRESS AND APOPTOSIS, PERHAPS PRIMING THE LIVER FOR LATER DEVELOPMENT OF NAFLD. INNATE IMMUNE DYSFUNCTION AND NECROINFLAMMATORY CHANGES HAVE BEEN OBSERVED IN POSTNATAL OFFSPRING LIVER OF ANIMALS BORN TO HIGH-FAT-FED DAMS. POSTWEANING, LIVERS OF OFFSPRING EXPOSED TO MATERNAL HIGH-FAT FEEDING IN UTERO SHARE PATHOPHYSIOLOGIC FEATURES WITH HUMAN NAFLD, INCLUDING INCREASED DE NOVO LIPOGENESIS AND DECREASED FREE FATTY ACID OXIDATION. HUMAN STUDIES USING MAGNETIC RESONANCE IMAGING HAVE SHOWN THAT MATERNAL BMI PREDICTS INFANT INTRAHEPATOCELLULAR LIPID STORAGE, AS SEEN IN ANIMAL MODELS. THE GENERATIONAL TRANSFER OF NAFLD MAY OCCUR VIA EPIGENETIC CHANGES IN OFFSPRING LIVER. TRANSMISSION OF MICROBIOTA FROM MOTHER TO INFANT MAY IMPACT ENERGY RETENTION AND IMMUNE FUNCTION THAT CONTRIBUTE TO A PREDISPOSITION TO NAFLD.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
15  2757  39 EXPRESSION OF EPIGENETIC MACHINERY GENES IS SENSITIVE TO MATERNAL OBESITY AND WEIGHT LOSS IN RELATION TO FETAL GROWTH IN MICE. BACKGROUND: MATERNAL OBESITY IMPACTS FETAL GROWTH AND PREGNANCY OUTCOMES. TO COUNTERACT THE DELETERIOUS EFFECTS OF OBESITY ON FERTILITY AND PREGNANCY ISSUE, PRECONCEPTIONAL WEIGHT LOSS IS RECOMMENDED TO OBESE WOMEN. WHETHER THIS WEIGHT LOSS IS BENEFICIAL/DETRIMENTAL FOR OFFSPRING REMAINS POORLY EXPLORED. EPIGENETIC MECHANISMS COULD BE AFFECTED BY MATERNAL WEIGHT CHANGES, PERTURBING EXPRESSION OF KEY DEVELOPMENTAL GENES IN THE PLACENTA OR FETUS. OUR AIM WAS TO INVESTIGATE THE EFFECTS OF CHRONIC MATERNAL OBESITY ON FETO-PLACENTAL GROWTH ALONG WITH THE UNDERLYING EPIGENETIC MECHANISMS. WE ALSO TESTED WHETHER PRECONCEPTIONAL WEIGHT LOSS COULD ALLEVIATE THESE EFFECTS. RESULTS: FEMALE MICE WERE FED EITHER A CONTROL DIET (CTRL GROUP), A HIGH-FAT DIET (OBESE (OB) GROUP), OR A HIGH-FAT DIET SWITCHED TO A CONTROL DIET 2 MONTHS BEFORE CONCEPTION (WEIGHT LOSS (WL) GROUP). AT MATING, OB FEMALES PRESENTED AN OBESE PHENOTYPE WHILE WL FEMALES NORMALIZED METABOLIC PARAMETERS. AT EMBRYONIC DAY 18.5 (E18.5), FETUSES FROM OB FEMALES PRESENTED FETAL GROWTH RESTRICTION (FGR; -13 %) AND 28 % OF THE FETUSES WERE SMALL FOR GESTATIONAL AGE (SGA). FETUSES FROM WL FEMALES NORMALIZED THIS PHENOTYPE. THE EXPRESSION OF 60 EPIGENETIC MACHINERY GENES AND 32 METABOLIC GENES WAS MEASURED IN THE FETAL LIVER, PLACENTAL LABYRINTH, AND JUNCTIONAL ZONE. WE REVEALED 23 GENES ALTERED BY MATERNAL WEIGHT TRAJECTORIES IN AT LEAST ONE OF THREE TISSUES. THE FETAL LIVER AND PLACENTAL LABYRINTH WERE MORE RESPONSIVE TO MATERNAL OBESITY THAN JUNCTIONAL ZONE. ONE THIRD (18/60) OF THE EPIGENETIC MACHINERY GENES WERE DIFFERENTIALLY EXPRESSED BETWEEN AT LEAST TWO MATERNAL GROUPS. INTERESTINGLY, GENES INVOLVED IN THE HISTONE ACETYLATION PATHWAY WERE PARTICULARLY ALTERED (13/18). IN OB GROUP, LYSINE ACETYLTRANSFERASES AND BROMODOMAIN-CONTAINING PROTEIN 2 WERE UPREGULATED, WHILE MOST HISTONE DEACETYLASES WERE DOWNREGULATED. IN WL GROUP, THE EXPRESSION OF ONLY A SUBSET OF THESE GENES WAS NORMALIZED. CONCLUSIONS: THIS STUDY HIGHLIGHTS THE HIGH SENSITIVITY OF THE EPIGENETIC MACHINERY GENE EXPRESSION, AND PARTICULARLY THE HISTONE ACETYLATION PATHWAY, TO MATERNAL OBESITY. THESE OBESITY-INDUCED TRANSCRIPTIONAL CHANGES COULD ALTER THE PLACENTAL AND THE HEPATIC EPIGENOME, LEADING TO FGR. PRECONCEPTIONAL WEIGHT LOSS APPEARS BENEFICIAL TO FETAL GROWTH, BUT SOME EFFECTS OF PREVIOUS OBESITY WERE RETAINED IN OFFSPRING PHENOTYPE.	2016	
                                                                                         
16  1356  30 DEVELOPMENT OF A DIETARY METHYL DONOR FOOD FREQUENCY QUESTIONNAIRE TO ASSESS FOLATE AND VITAMIN B(12) STATUS IN CHILDREN WITH CHRONIC HEPATITIS B VIRUS INFECTION. OBJECTIVE: TO DEVELOP A DIETARY METHYL DONOR FOOD FREQUENCY QUESTIONNAIRE (DMD-FFQ) THAT IS VALIDATED IN A COHORT OF US CHILDREN AND TO DETERMINE WHETHER THE CONSUMPTION OF FOLATE AND VITAMIN B(12), PRINCIPAL DMDS, CORRELATES WITH HBV DNA LEVELS AND ITS METHYLATION DENSITY. STUDY DESIGN: WE DEVELOPED A SEMIQUANTITATIVE DMD-FFQ TO ESTIMATE INTAKE OF FOLATE AND VITAMIN B(12) AND VALIDATED THIS INSTRUMENT AGAINST A 24-HOUR DIETARY RECALL AND BIOMARKERS-RED BLOOD CELL FOLATE, SERUM VITAMIN B(12), AND HOMOCYSTEINE-IN 35 CHILDREN WITH CHRONIC HBV INFECTION WITHOUT OTHER MEDICAL COMORBIDITIES. ESTIMATES OF DMD, AS WELL AS THE SERUM BIOMARKERS, WERE CORRELATED WITH THE METHYLATION DENSITY OF HBV CPG ISLAND 2 AND HBV DNA LEVELS. RESULTS: FOLATE PER KILOGRAM OF BODY WEIGHT BY THE DMD-FFQ CORRELATED POSITIVELY WITH 24-HOUR RECALL (R = 0.60; P < .001) AND RED BLOOD CELL FOLATE (R = 0.40; P = .02), AND NEGATIVELY WITH HOMOCYSTEINE (R = -0.54; P < .001). VITAMIN B(12) PER KILOGRAM BY DMD-FFQ ALSO CORRELATED POSITIVELY WITH 24-HOUR RECALL (R = 0.57; P < .001) AND SERUM VITAMIN B(12) (R = 0.36, P = .04), AND NEGATIVELY WITH HOMOCYSTEINE (R = -0.44; P = .008). NEITHER DMD INTAKE (FROM DMD-FFQ OR 24-HOUR RECALL) NOR SERUM BIOMARKERS CORRELATED WITH HBV DNA LEVELS OR ITS METHYLATION DENSITY. CONCLUSIONS: OUR DMD-FFQ CORRELATES WELL WITH A 24-HOUR RECALL AND CIRCULATING BIOMARKERS. ALTHOUGH LITTLE EVIDENCE EXISTED THAT CONSUMPTION OF THESE MICRONUTRIENTS CORRELATED WITH HBV REPLICATION, THIS TOOL COULD PROVE USEFUL FOR INVESTIGATING EPIGENETIC MODIFICATION BY DIET FOR SEVERAL PEDIATRIC DISEASES.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
17  4925  34 PARENTAL MICRONUTRIENT DEFICIENCY DISTORTS LIVER DNA METHYLATION AND EXPRESSION OF LIPID GENES ASSOCIATED WITH A FATTY-LIVER-LIKE PHENOTYPE IN OFFSPRING. MICRONUTRIENT STATUS OF PARENTS CAN AFFECT LONG TERM HEALTH OF THEIR PROGENY. AROUND 2 BILLION HUMANS ARE AFFECTED BY CHRONIC MICRONUTRIENT DEFICIENCY. IN THIS STUDY WE USE ZEBRAFISH AS A MODEL SYSTEM TO EXAMINE MORPHOLOGICAL, MOLECULAR AND EPIGENETIC CHANGES IN MATURE OFFSPRING OF PARENTS THAT EXPERIENCED A ONE-CARBON (1-C) MICRONUTRIENT DEFICIENCY. ZEBRAFISH WERE FED A DIET SUFFICIENT, OR MARGINALLY DEFICIENT IN 1-C NUTRIENTS (FOLATE, VITAMIN B12, VITAMIN B6, METHIONINE, CHOLINE), AND THEN MATED. OFFSPRING LIVERS UNDERWENT HISTOLOGICAL EXAMINATION, RNA SEQUENCING AND GENOME-WIDE DNA METHYLATION ANALYSIS. PARENTAL 1-C MICRONUTRIENT DEFICIENCY RESULTED IN INCREASED LIPID INCLUSION AND WE IDENTIFIED 686 DIFFERENTIALLY EXPRESSED GENES IN OFFSPRING LIVER, THE MAJORITY OF WHICH WERE DOWNREGULATED. DOWNREGULATED GENES WERE ENRICHED FOR FUNCTIONAL CATEGORIES RELATED TO STEROL, STEROID AND LIPID BIOSYNTHESIS, AS WELL AS MITOCHONDRIAL PROTEIN SYNTHESIS. DIFFERENTIAL DNA METHYLATION WAS FOUND AT 2869 CPG SITES, ENRICHED IN PROMOTER REGIONS AND PERMUTATION ANALYSES CONFIRMED THE ASSOCIATION WITH PARENTAL FEED. OUR DATA INDICATE THAT PARENTAL 1-C NUTRIENT STATUS CAN PERSIST AS LOCUS SPECIFIC DNA METHYLATION MARKS IN DESCENDANTS AND SUGGEST AN EFFECT ON LIPID UTILIZATION AND MITOCHONDRIAL PROTEIN TRANSLATION IN F(1) LIVERS. THIS POINTS TOWARD PARENTAL MICRONUTRIENTS STATUS AS AN IMPORTANT FACTOR FOR OFFSPRING HEALTH AND WELFARE.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
18  6270  41 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	

19  4066  32 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
20  4711  33 NON-ALCOHOLIC FATTY LIVER DISEASE IN OBESE CHILDREN AND ADOLESCENTS: A ROLE FOR NUTRITION? NON-ALCOHOLIC FATTY LIVER DISEASE (NAFLD) HAS BECOME THE MOST COMMON CAUSE OF CHRONIC LIVER DISEASE IN CHILDREN, PARALLELING THE INCREASING PREVALENCE OF OBESITY WORLDWIDE. THE PATHOGENESIS OF PAEDIATRIC NAFLD IS NOT FULLY UNDERSTOOD, BUT IT IS KNOWN THAT OBESITY, NUTRITION, LIFESTYLE VARIABLES, GENETIC AND EPIGENETIC FACTORS MAY BE CAUSALLY INVOLVED IN THE DEVELOPMENT OF THIS COMMON METABOLIC LIVER DISEASE. IN PARTICULAR, OBESITY AND NUTRITION ARE AMONG THE STRONGEST RISK FACTORS FOR PAEDIATRIC NAFLD, WHICH MAY EXERT THEIR ADVERSE HEPATIC EFFECTS ALREADY BEFORE BIRTH. EXCESS ENERGY INTAKE INDUCES HYPERTROPHY AND HYPERPLASIA OF ADIPOSE TISSUE WITH SUBSEQUENT DEVELOPMENT OF SYSTEMIC INSULIN RESISTANCE, WHICH IS ANOTHER IMPORTANT RISK FACTOR FOR NAFLD. DIET COMPOSITION AND IN PARTICULAR SIMPLE CARBOHYDRATE INTAKE (ESPECIALLY HIGH FRUCTOSE INTAKE) MAY PROMOTE THE DEVELOPMENT OF NAFLD, WHEREAS NON-DIGESTIBLE CARBOHYDRATES (DIETARY FIBER), BY AFFECTING GUT MICROBIOTA, MAY FAVOUR THE INTEGRITY OF GUT WALL AND REDUCE INFLAMMATION, OPPOSING THIS PROCESS. SATURATED FAT INTAKE MAY ALSO PROMOTE NAFLD DEVELOPMENT, WHEREAS UNSATURATED FAT INTAKE HAS SOME BENEFICIAL EFFECTS. PROTEIN INTAKE DOES NOT SEEM TO AFFECT THE DEVELOPMENT OF NAFLD, BUT FURTHER INVESTIGATION IS NEEDED. IN CONCLUSION, LIFESTYLE MODIFICATIONS TO INDUCE WEIGHT LOSS, THROUGH DIET AND PHYSICAL ACTIVITY, REMAIN THE MAINSTAY OF TREATMENT FOR PAEDIATRIC NAFLD. THE USE OF DIETARY SUPPLEMENTS, SUCH AS OMEGA-3 FATTY ACIDS AND PROBIOTICS, NEEDS FURTHER STUDY BEFORE RECOMMENDATION.	2022