1  3788 105 INTERLEUKIN 1 ALPHA (IL1A) POLYMORPHISMS AND RISK OF ENDOMETRIOSIS IN IRANIAN POPULATION: A CASE-CONTROL STUDY. ENDOMETRIOSIS IS ONE OF THE MOST COMMON GYNECOLOGICAL DISEASES AND A MAJOR CAUSE OF PAIN AND INFERTILITY. IT IS INFLUENCED BY GENETIC, EPIGENETIC, AND ENVIRONMENTAL FACTORS. RECENTLY, GENOME-WIDE ASSOCIATION STUDIES HAVE REVEALED A STRONG ASSOCIATION BETWEEN IL1A SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) AND INCREASED RISK OF ENDOMETRIOSIS IN JAPANESE WOMEN. THE AIM OF THE PRESENT STUDY WAS TO EVALUATE THE ASSOCIATION OF THREE IL1A SNPS, RS17561, RS1304037, AND RS2856836 WITH THE RISK OF ENDOMETRIOSIS IN IRANIAN POPULATION. TOTALLY, 105 WOMEN WITH DIAGNOSIS OF ENDOMETRIOSIS AND 102 HEALTHY WOMEN AS CONTROL GROUP WERE INCLUDED. THREE SNPS OF THE IL1A, RS17561 G/T, RS1304037 A/G, AND RS2856836 T/C, WERE GENOTYPED BY PCR AND RFLP. THE RS2856836 TC GENOTYPE WAS SIGNIFICANTLY HIGHER (P = .002; OR = 3.1, 95% CI: 1.5-6.5) IN THE PATIENTS (28.1%) THAN THE CONTROL GROUP (12.7%). THE RS2856836 CC GENOTYPE WAS SIGNIFICANTLY HIGHER (P = .047; OR = 2.3, 95% CI: 1.0-5.3) IN THE PATIENTS (17.5%) THAN THE CONTROL GROUP (10.8%). THE RS2856836 C ALLELE WAS SIGNIFICANTLY HIGHER (P = .001; OR = 2.2, 95% CI: 1.4-3.6) IN THE PATIENTS (31.6%) THAN THE CONTROL GROUP (17.2%). THE IL1A RS2856836 T/C SNP WAS ASSOCIATED WITH SUSCEPTIBILITY TO ENDOMETRIOSIS AND THE RS2856836 C ALLELE MAY INCREASE THE RISK OF ENDOMETRIOSIS IN IRANIAN WOMEN.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
2   503  35 ASSOCIATION OF CHEMOKINE GENE VARIANTS WITH END STAGE RENAL DISEASE IN NORTH INDIAN POPULATION. BACKGROUND & AIM: THE PROGRESSION RATE OF CHRONIC KIDNEY DISEASE (CKD) TO ITS END-STAGE RENAL DISEASE (ESRD), AND THE DEVELOPMENT AND SEVERITY OF VARIOUS COMPLICATIONS, ARE INDIRECTLY INFLUENCED BY GENETIC AND EPIGENETIC FACTORS. CHEMOKINES ARE SMALL INDUCIBLE PRO-INFLAMMATORY CYTOKINES, WHICH ARE IMPLICATED IN MANY BIOLOGICAL PROCESSES LIKE MIGRATION OF LEUKOCYTES, ANGIOGENESIS, TUMOR GROWTH AND METASTASIS. WE TESTED ASSOCIATION OF FOUR SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) VIZ. CCL2I/D, CCL2A2518G, CXCL12G801A AND CXCR2(+1208)C/T AMONG INDIVIDUALS WITH ESRD (END STAGE RENAL DISEASE) AND NORMAL HEALTHY CONTROLS FROM NORTH INDIAN POPULATION. MATERIALS AND METHOD: CCL2I/D, CCL2A2518G, CXCL12G801A AND CXCR2(+1208)C/T WERE GENOTYPED IN BLOOD SAMPLES OF HOSPITAL-BASED CASE-CONTROL STUDY COMPRISING OF 200 ESRD CASES AND 200 HEALTHY CONTROLS USING RESTRICTION FRAGMENT LENGTH POLYMORPHISM (RFLP) AND ARMS (AMPLIFICATION REFRACTORY MUTATION SPECIFIC) PCR METHODOLOGY. RESULTS: A SIGNIFICANT ASSOCIATION WAS FOUND IN CXCL12G801A WITH ESRD RISK. IN CASE OF CXCL12G801A POLYMORPHISM HETEROZYGOUS (GA) GENOTYPE SHOWED SIGNIFICANT RISK (P=0.039; OR=1.55) WHEREAS A ALLELE CARRIER (GA+AA) ALSO EXHIBITED RISK WITH ESRD (P=0.045, OR=1.59). IN CXCR2(+1208)C/T POLYMORPHISM, THE HETEROZYGOUS GENOTYPE (CT) SHOWED SIGNIFICANT RISK FOR ESRD (P=0.028; OR=1.65) AND COMBINATION OF CT+TT DEMONSTRATED SIGNIFICANT HIGH RISK FOR ESRD (P=0.036; OR=1.52). IN CASE OF CCL2I/D, THE VARIANT GENOTYPE (D/D) SHOWED REDUCED RISK FOR ESRD PATIENTS. UPON ANALYZING THE GENE-GENE INTERACTION BETWEEN CXCR2 AND CXCL12, THE COMBINATION (CT-GA) SHOWED 2.65 FOLD RISK FOR ESRD (P=0.018). CONCLUSION: OUR RESULTS INDICATED THAT POLYMORPHISM IN CXCL12G801A AND CXCR2(+1208)C/T SHOWED HIGH RISK FOR ESRD IN NORTH INDIAN POPULATION. HOWEVER, CCL2I/D SHOWED REDUCED RISK AND CCL2A2518G EXHIBITED NO ASSOCIATION. STUDY WITH LARGE SAMPLE SIZE AND DIVERSE ETHNICITY IS REQUIRED TO VALIDATE THESE OBSERVATIONS.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
3   514  38 ASSOCIATION OF SHMT1, MAZ, ERG, AND L3MBTL3 GENE POLYMORPHISMS WITH SUSCEPTIBILITY TO MULTIPLE SCLEROSIS. MULTIPLE SCLEROSIS (MS) IS THE MOST COMMON INFLAMMATORY AND CHRONIC DISEASE OF THE CENTRAL NERVOUS SYSTEM (CNS). A COMPLEX INTERACTION BETWEEN GENETIC, ENVIRONMENTAL, AND EPIGENETIC FACTORS IS INVOLVED IN THE PATHOGENESIS OF MS. WITH THE ADVANCEMENT OF GWAS, VARIOUS VARIANTS ASSOCIATED WITH MS HAVE BEEN IDENTIFIED. THIS STUDY AIMED TO EVALUATE THE ASSOCIATION OF SINGLE-NUCLEOTIDE POLYMORPHISMS (SNPS) RS4925166 AND RS1979277 IN THE SHMT1, MAZ RS34286592, ERG RS2836425, AND L3MBTL3 RS4364506 WITH MS. IN THIS CASE-CONTROL STUDY, THE ASSOCIATION OF FIVE SNPS IN SHMT1, MAZ, ERG, AND L3MBTL3 GENES WITH RELAPSING-REMITTING MS (RR-MS) WAS INVESTIGATED IN 190 PATIENTS AND 200 HEALTHY INDIVIDUALS. FOUR SNPS INCLUDING SHMT1 RS4925166, SHMT1 RS1979277, MAZ RS34286592, AND L3MBTL3 RS4364506 WERE GENOTYPED USING PCR-RFLP AND GENOTYPING OF ERG RS2836425 WAS PERFORMED BY TETRA-PRIMER ARMS PCR. OUR FINDINGS SHOWED A SIGNIFICANT DIFFERENCE IN THE ALLELIC FREQUENCIES FOR THE FOUR SNPS OF SHMT1 RS4925166, SHMT1 RS1979277, MAZ RS34286592, AND ERG RS2836425, WHILE THERE WERE NO DIFFERENCES IN THE ALLELE AND GENOTYPE FREQUENCIES FOR L3MBTL3 RS4364506. THESE SIGNIFICANT ASSOCIATIONS WERE OBSERVED FOR THE FOLLOWING GENOTYPES: TT AND GG GENOTYPES OF SHMT1 RS4925166 (OR 0.47 AND 1.90, RESPECTIVELY) GENOTYPE GG OF SHMT1 RS1979277 (OR 0.63), GENOTYPE GG OF MAZ RS34286592 (OR 0.61), TC AND CC GENOTYPES OF ERG RS2836425 (OR 1.89 AND 0.50, RESPECTIVELY). OUR STUDY HIGHLIGHTED THAT PEOPLE WHO ARE CARRYING GENOTYPES INCLUDING GG (SHMT1 RS4925166) AND TC (ERG RS2836425) HAVE THE HIGHEST SUSCEPTIBILITY CHANCE FOR MS, RESPECTIVELY. HOWEVER, GENOTYPES TT (SHMT1 RS4925166), CC (ERG RS2836425), GG (MAZ RS34286592), AND GG (SHMT1 RS1979277) HAD THE HIGHEST NEGATIVE ASSOCIATION (PROTECTIVE EFFECT) WITH MS, RESPECTIVELY. L3MBTL3 RS4364506 WAS FOUND NEITHER AS A PREDISPOSING NOR A PROTECTIVE VARIANT.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
4   515  30 ASSOCIATION OF SOCS1 (- 820) (RS33977706) GENE POLYMORPHISM WITH CHRONIC PERIODONTITIS: A CASE-CONTROL STUDY IN BRAZILIANS. IT IS EVIDENT THAT THE ACCUMULATION OF PERIODONTAL PATHOGENS OVER THE TEETH SURFACE TRIGGERS PERIODONTITIS; HOWEVER, ITS AGGRAVATION AND SEVERITY DEPEND ON OTHER ELEMENTS SUCH AS ENVIRONMENTAL FACTORS, SYSTEMIC HEALTH AND THE HOST GENETIC AND/OR EPIGENETIC BACKGROUND. TO ADDRESS THIS ISSUE, WE INVESTIGATED THE ASSOCIATION OF TWO GENETIC POLYMORPHISMS PLACED ON PROMOTER REGION OF SOCS1 GENE WITH CHRONIC PERIODONTAL DISEASE. SOCS1 REGULATES JAK/KINASE SIGNALING PATHWAY AND CHANGES IN ITS MRNA EXPRESSION HAVE BEEN RELATED TO DIFFERENT TYPES OF CANCER AND CHRONIC INFLAMMATION, INCLUDING CHRONIC PERIODONTITIS. THE FREQUENCY OF ALLELES AND GENOTYPES OF TWO POLYMORPHISMS IN SOCS1 GENE PROMOTER (POSITION - 820 (RS33977706) AND POSITION - 1478 (RS33989964)) WERE ANALYZED BY PERFORMING RFLP AND TAQMAN SYSTEM IN A TOTAL OF 257 NON-SMOKING SUBJECTS. WE FOUND A LOW FREQUENCY OF A ALLELE AND A/A GENOTYPE OF SOCS1(- 820) POLYMORPHISM IN THE CHRONIC PERIODONTITIS GROUP, ESPECIALLY WHEN SEVERE PERIODONTITIS SAMPLES WERE SEPARATELY ANALYZED (OR = 0.3933; P = 0.0084 (IC95% 0.2112 < MU < 0.7324)), SUGGESTING THAT A ALLELE PLAYS PROTECTIVE EFFECT AGAINST CHRONIC PERIODONTITIS. WE DID NOT FIND ASSOCIATION BETWEEN SOCS1-1478 POLYMORPHISM AND PERIODONTITIS. IN ADDITION, ANALYSIS OF SOCS1 (- 820/- 1478) HAPLOTYPE REVEALED THAT THE FREQUENCY OF A(- 820)/CA(- 1478) HAPLOTYPE DECREASES IN CHRP (P = 0.0089). IN CONCLUSION, OUR STUDY FOUND THAT SOCS1(- 820) POLYMORPHISM IS ASSOCIATED WITH CHRONIC PERIODONTITIS.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
5  5108  43 POLYMORPHISMS OF TNF-ALPHA (- 308), IL-1BETA (+ 3954) AND IL1-RA (VNTR) ARE ASSOCIATED TO SEVERE STAGE OF ENDOMETRIOSIS IN MEXICAN WOMEN: A CASE CONTROL STUDY. BACKGROUND: ENDOMETRIOSIS IS AN ESTROGEN-DEPENDENT AND CHRONIC INFLAMMATORY DISEASE AFFECTING UP TO 10% OF WOMEN. IT IS THE RESULT OF A COMBINED INTERACTION OF GENETIC, EPIGENETIC, ENVIRONMENTAL, LIFESTYLE, REPRODUCTIVE AND LOCAL INFLAMMATORY FACTORS. IN THIS STUDY, WE INVESTIGATED WHETHER SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) MAPPING TO TNF-ALPHA (TNF, RS1800629) AND IL-1BETA (IL1B, RS1143634) AND VARIABLE NUMBER TANDEM REPEAT POLYMORPHISM MAPPING TO IL1-RA (IL1RN INTRON 2, RS2234663) GENETIC LOCI ARE ASSOCIATED WITH RISK FOR ENDOMETRIOSIS IN A MEXICAN MESTIZO POPULATION. METHODS: THIS STUDY INCLUDED 183 WOMEN WITH CONFIRMED ENDOMETRIOSIS (ENDO) DIAGNOSED AFTER SURGICAL LAPAROSCOPY AND 186 WOMEN WITH SATISFIED PARITY AND WITHOUT ENDOMETRIOSIS AS CONTROLS (CTR). PCR/RFLP TECHNIQUE WAS USED FOR GENOTYPING SNPS (RS1800629 AND RS1143634); PCR FOR GENOTYPING RS2234663. RESULTS: WE FOUND NO STATISTICAL DIFFERENCES IN AGE BETWEEN GROUPS NOR AMONG STAGES OF ENDOMETRIOSIS AND THE CTR GROUP. WE OBSERVED NO DIFFERENCE IN GENOTYPE AND ALLELE FREQUENCIES, NOR CARRIAGE RATE BETWEEN GROUPS IN NONE OF THE THREE STUDIED POLYMORPHISMS. THE PREVALENCE OF TNF*2-ALLELE HETEROZYGOTES (P = 0.025; OR 3.8), TNF*2-ALLELE (P = 0.029; OR 3.4), IL1B*2-ALLELE HETEROZYGOTES (P = 0.044; OR 2.69) AND ITS CARRIAGE RATE (P = 0.041; OR 2.64) IN ENDOMETRIOSIS STAGE IV WAS HIGHER THAN THE CTR GROUP. SURPRISINGLY, THE CARRIAGE RATE OF IL1RN*2-ALLELE (ENDO: P = 0.0004; OR 0.4; STAGE I: P = 0.002, OR 0.38; STAGE II: P = 0.002, OR 0.35; STAGE III: P = 0.003, OR 0.33), AS WELL AS THE IL1RN*2-ALLELE FREQUENCIES (ENDO: P = 0.0008, OR 0.55; I: P = 0.037, OR 0.60; II: P = 0.002, OR 0.41; III: P = 0.003, OR 0.38) WERE LOWER THAN THE CTR GROUP. WOMEN WITH ENDOMETRIOSIS STAGE IV (SEVERE) HAD FREQUENCIES MORE ALIKE TO THE CTR GROUP IN THE IL1RN*2 ALLELE FREQUENCY (31.2% VS. 27.2%) AND CARRIAGE RATE (37.5% VS. 41.9%). CONCLUSION: ALTHOUGH THESE POLYMORPHISMS ARE NOT ASSOCIATED WITH THE RISK OF ENDOMETRIOSIS, MEXICAN MESTIZO WOMEN WITH SEVERE STAGE OF ENDOMETRIOSIS HAVE HIGHER FREQUENCIES OF TNF*2-, IL1B*2- AND IL1RN*2-ALLELES, WHICH MAY EXPLAIN A POSSIBLE CORRELATION WITH DISEASE SEVERITY RATHER THAN PREDISPOSITION OR RISK.	2022	
                                                                                                                                                                                                                                                                                                                                                            
6  3574  33 IMPACT OF METHIONINE SYNTHASE REDUCTASE POLYMORPHISMS IN CHRONIC MYELOID LEUKEMIA PATIENTS. INTRODUCTION: METABOLISM METHIONINE AND OF FOLATE PLAY A VITAL FUNCTION IN CELLULAR METHYLATION REACTIONS, DNA SYNTHESIS AND EPIGENETIC PROCESS.HOWEVER, POLYMORPHISMS OF METHIONINE HAVE RECEIVED MUCH ATTENTION IN RECENT MEDICAL GENETICS RESEARCH. OBJECTIVES: TO ASCERTAIN WHETHER THE COMMON POLYMORPHISMS OF THE MTRR (METHIONINE SYNTHASE REDUCTASE) A66G GENE COULD PLAY A ROLE IN AFFECTING SUSCEPTIBILITY TO CHRONIC MYELOID LEUKEMIA (CML) IN SUDANESE INDIVIDUALS. METHODS: IN A CASE-CONTROLLED STUDY, WE EXTRACTED AND ANALYZED DNA FROM 200 CML PATIENTS AND 100 HEALTHY CONTROL SUBJECTS BY THE PCR-RFLP METHOD. RESULTS: WE FOUND NO SIGNIFICANT DIFFERENCE IN AGE ORGENDER BETWEEN THE PATIENT GROUP AND CONTROLS. THE MTRR A66G GENOTYPES WERE DISTRIBUTED BASED ON THE HARDY-WEINBERG EQUILIBRIUM (P > 0.05). THE VARIATION OF MTRR A66G WAS LESS SIGNIFICANTLY FREQUENT IN CASES WITH CML (68.35%) THAN IN CONTROLS (87%) (OR = 0.146, 95% CI = 0.162-0.662, P < 0.002). ADDITIONALLY, AG AND GG GENOTYPES AND G ALLELE WERE REDUCING THE CML RISK (ODDS RATIO [OR] = 0.365; 95% CI [0.179-0.746]; P = 0.006; OR = 0.292; 95% CI [0.145-0.590]; P = 0.001 AND OR = 0.146; 95% CI [0.162-0.662]; P = 0.002 AND OR = 2.0; 95% CI [1.3853-2.817]; RESPECTIVELY, (P = 0.000)). CONCLUSIONS: OUR DATA DEMONSTRATED THAT HETEROZYGOUS AND HOMOZYGOUS MUTANT GENOTYPES OF MTRR POLYMORPHISMS WERE ASSOCIATED WITH DECREASED RISK OF DEVELOPING CML IN THE SUDANESE POPULATION.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
7   517  38 ASSOCIATION STUDY OF FOXO3A SINGLE-NUCLEOTIDE POLYMORPHISM AND BRONCHIAL ASTHMA IN EGYPTIAN CHILDREN. ASTHMA IS THE MOST COMMON CHRONIC ILLNESS IN CHILDREN AND IS A LEADING CAUSE OF CHILDHOOD HOSPITALIZATION AND SCHOOL ABSENTEEISM. ASTHMA PRESENTS WITH DIFFERENT PHENOTYPES DEPENDING ON AGE, GENDER, GENETIC BACKGROUND, ENVIRONMENTAL EXPOSURES AND EPIGENETIC FACTORS. FORKHEAD BOX O3 (FOXO3) IS A TRANSCRIPTION FACTOR INVOLVED IN THE PATHOGENESIS OF A NUMBER OF INFLAMMATORY AND RESPIRATORY DISEASES. THE STUDY AIMS TO INVESTIGATE THE ASSOCIATION BETWEEN THE SNP RS13217795 IN FOXO3 GENE AND PEDIATRIC ONSET ASTHMA IN THE EGYPTIAN POPULATION. NINETY ASTHMATICS AND 160 HEALTHY CONTROLS WERE SUBJECTED TO GENOTYPING OF FOXO3 SNP (RS13217795) USING THE PCR-RFLP METHOD. THE PROPORTION OF HOMOZYGOUS (CC) AND HETEROZYGOUS (CT) GENOTYPES WAS LOWER IN THE ASTHMATIC GROUP COMPARED TO THE CONTROL GROUP BUT STATISTICALLY INSIGNIFICANT; P > 0.05. ON THE OTHER HAND THE PROPORTION OF THE MUTANT HOMOZYGOUS (TT) GENOTYPE IN ASTHMATIC GROUP WAS HIGHER; 30 (33.3%) THAN THE CONTROL GROUP; 28(17.5%), THE DIFFERENCE WAS SIGNIFICANT IN RECESSIVE MODEL OF DISEASE PENETRANCE WITH ODDS RATIO OR (95% CI) OF 2.4(1 - 5.49) AND P=0.039. THIS ASSOCIATION WAS MORE PRONOUNCED IN MALE GENDER; OR AND 95% CI OF 5.3 (1.4- 19.3) AND P=0.01. IN CONCLUSIONS, EGYPTIAN CHILDREN CARRYING THE MUTANT (TT) GENOTYPE WERE AT HIGHER RISK TO DEVELOP ASTHMA WITH A HIGHER RISK IN MALE GENDER.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
8  2893  30 GAS5 RS2067079 AND MIR-137 RS1625579 FUNCTIONAL SNPS AND RISK OF CHRONIC HEPATITIS B VIRUS INFECTION AMONG EGYPTIAN PATIENTS. HEPATITIS B VIRUS (HBV) INFECTION IS A SIGNIFICANT HEALTH ISSUE WORLDWIDE.. WE ATTEMPTED TO FULFILL THE MOLECULAR MECHANISMS OF EPIGENETIC AND GENETIC FACTORS ASSOCIATED WITH CHRONIC HBV (CHBV). EXPRESSION LEVELS OF THE LNCRNA GROWTH ARREST-SPECIFIC 5 (GAS5) AND MIR-137 AND THEIR CORRESPONDING SNPS, RS2067079 (C/T) AND RS1625579 (G/T) WERE ANALYZED IN 117 CHBV PATIENTS AND 120 CONTROLS TO INVESTIGATE THE PROBABLE ASSOCIATION BETWEEN THESE BIOMARKERS AND CHBV PATHOGENESIS IN THE EGYPTIAN POPULATION. SERUM EXPRESSION LEVELS OF GAS5 AND MIR-137 WERE SIGNIFICANTLY DOWN-REGULATED IN CASES VS CONTROLS. REGARDING GAS5 (RS2067079), THE MUTANT TT GENOTYPE SHOWED AN INCREASED RISK OF CHBV (P < 0.001), WHILE THE DOMINANT CC WAS A PROTECTIVE FACTOR (P = 0.004). REGARDING MIR-137 RS1625579, THE MUTANT GENOTYPE TT WAS REPORTED AS A RISK FACTOR FOR CHBV (P < 0.001) AND THE NORMAL GG GENOTYPE WAS A PROTECTIVE FACTOR, P < 0.001. THE SERUM GAS5 WAS SIGNIFICANTLY HIGHER IN THE MUTANT TT GENOTYPE OF GAS5 SNP AS COMPARED TO THE OTHER GENOTYPES (P = 0.007). CONCERNING MIR-137 RS1625579, THE MUTANT TT GENOTYPE WAS SIGNIFICANTLY ASSOCIATED WITH A LOWER SERUM EXPRESSION LEVEL OF MIR-137 (P = 0.018). WE REVEALED THE DYSREGULATED EXPRESSION LEVELS OF GAS5 AND MIR-137 LINKED TO THEIR FUNCTIONING SNPS WERE ASSOCIATED WITH CHBV RISK AND MIGHT ACT AS POTENTIAL THERAPEUTIC TARGETS.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
9  3528  33 IL36G GENETIC VARIANT IS INDEPENDENTLY ASSOCIATED WITH SUSCEPTIBILITY, SEVERITY AND JOINT INVOLVEMENT IN PSORIASIS. PSORIASIS (PSO) IS A CHRONIC, IMMUNE-MEDIATED, INFLAMMATORY AND POLYGENIC DERMATOSIS ASSOCIATED WITH BOTH PHYSICAL AND PSYCHOLOGICAL BURDEN THAT CAN BE TRIGGERED BY INJURY, TRAUMA, INFECTIONS AND MEDICATIONS. THE ETIOLOGY OF PSO IS NOT FULLY ELUCIDATED BUT GENETIC, EPIGENETIC AND ENVIRONMENTAL FACTORS ARE ALL LIKELY TO PLAY A ROLE. A CASE-CONTROL STUDY WAS CARRIED OUT TO EVALUATE THE FREQUENCY OF THE IL36G C>T (RS13392494) AND THE IL36G A>G (RS7584409) VARIANTS AND THEIR ASSOCIATION WITH SUSCEPTIBILITY, JOINT INVOLVEMENT AND SEVERITY OF PSO. THE STUDY INCLUDED 154 PATIENTS WITH PSO AND 154 CONTROLS FROM BRAZILIAN POPULATION. THE SEVERITY OF PSO WAS ASSESSED BY THE PSORIASIS AREA AND SEVERITY INDEX (PASI). THE IL36G (RS13392494 AND RS7584409) VARIANTS WERE GENOTYPED BY ALLELIC DISCRIMINATION ASSAY USING THE REAL-TIME POLYMERASE CHAIN REACTION. THE ASSOCIATION BETWEEN THE IL36G GENETIC VARIANTS AND THE STUDY VARIABLES WAS ANALYZED IN ALLELIC, DOMINANT, CODOMINANT, OVERDOMINANT, RECESSIVE, AND HAPLOTYPE MODELS. THE MAIN RESULTS WERE THAT PSO PATIENTS WERE OLDER (P < 0.001) AND HAD HIGHER BODY MASS INDEX (P < 0.001) THAN CONTROLS; 95.8% OF THE PATIENTS HAD PLAQUE PSO, 16.1% HAD PSORIATIC ARTHRITIS (PSA), AND 27.9% HAD PASI > 10. THE IL36G RS1339294 VARIANT SHOWED NO ASSOCIATION WITH PSO IN ALL GENETIC MODELS WHILE THE IL36G RS7584409 VARIANT SHOWED A PROTECTIVE EFFECT IN PSO. HOWEVER, THE G ALLELE OF THE IL36G RS7584409 IN THE DOMINANT MODEL WAS POSITIVELY ASSOCIATED WITH PASI > 10 (P = 0.031). MOREOVER, PATIENTS WITH THE GG GENOTYPE OF THE IL36G RS7584409 VARIANT HAD ABOUT 5.0 TIMES MORE CHANCE OF PSA THAN THOSE WITH THE AA GENOTYPE (P = 0.014). REGARDING THE HAPLOTYPES, THE C/A IN A RECESSIVE MODEL (CACA VERSUS C/G AND T/A CARRIERS) WAS ASSOCIATED WITH PSO (P = 0.035) WHILE THE C/G HAPLOTYPE IN A DOMINANT MODEL (C/A CARRIERS VERSUS C/G AND T/A CARRIERS) SHOWED A PROTECTIVE EFFECT FOR PSO (P = 0.041). IN CONCLUSION, THE G ALLELE OF THE IL36G RS7584409 VARIANT WAS ASSOCIATED WITH PROTECTION TO PSO; HOWEVER, IN PATIENTS WITH PSO, THIS SAME ALLELE WAS ASSOCIATED WITH MODERATE TO SEVERE DISEASE AND PSA. THESE RESULTS SUGGEST THAT THE IL36G RS7584409 VARIANT MAY BE USED AS A POSSIBLE GENETIC BIOMARKER TO PREDICT SEVERITY AND JOINT INVOLVEMENT OF PSO.	2023	
                                                                                                                                                                                                                                                                                                                                   
10  3956  37 LONG NON-CODING RNA GENES POLYMORPHISMS H19 (RS2251375) AND MALAT1 (RS3200401) ASSOCIATION WITH RHEUMATOID ARTHRITIS AND THEIR CORRELATION WITH DISEASE ACTIVITY IN A COHORT OF EGYPTIAN PATIENTS: A PILOT STUDY. RHEUMATOID ARTHRITIS (RA) IS A CHRONIC, PROGRESSIVE, INFLAMMATORY, AUTOIMMUNE DISEASE THAT COULD BE DISABLING THROUGHOUT ITS COURSE. IT AFFECTS PEOPLE IN THEIR MOST REPRODUCTIVE YEARS WITH RELATIVELY HIGH MORBIDITY AND MORTALITY. LONG NON-CODING RNAS BECAME ONE OF THE EPIGENETIC MECHANISMS TO PROVE A LINK TO RA PATHOGENESIS AND DEVELOPMENT, INCLUDING H19 AND MALAT1 GENES. THESE TWO GENES' EXPRESSIONS HAD PROVED TO INCREASE IN MULTIPLE DISEASES, ATTRACTING ATTENTION TO THEIR POLYMORPHISMS AND THEIR POSSIBLE RISK ROLE. ASSESS THE ASSOCIATION BETWEEN H19 SNP (RS2251375) AND MALAT1 SNP (RS3200401) AND THE SUSCEPTIBILITY OF RA AND ITS DISEASE ACTIVITY. IN THIS PILOT STUDY, 200 HUNDRED SUBJECTS (100 RA PATIENTS AND 100 HEALTHY CONTROLS) WERE INVESTIGATED FOR A POSSIBLE LINK BETWEEN THE POLYMORPHISMS H19 SNP (RS2251375) AND MALAT1 SNP (3200401) AND RA SUSCEPTIBILITY AND DISEASE ACTIVITY. RA-RELATED INVESTIGATIONS AND CLINICAL ASSESSMENT WERE DONE. REAL-TIME PCR GENOTYPING OF BOTH SNPS WAS DONE USING TAQMAN(R) MGB PROBES. THERE WAS NO ASSOCIATION BETWEEN THE SNPS AND RISK OF DEVELOPING RA. HOWEVER, BOTH SNPS HAD A SIGNIFICANT ASSOCIATION WITH HIGH DISEASE ACTIVITY. H19 SNP (RS2251375) HETEROZYGOUS GENOTYPE CA HAD AN ASSOCIATION WITH ELEVATED LEVELS OF ESR (P = 0.04) AND HIGHER DAS28-ESR SCORE (P = 0.03). MALAT1 (RS3200401) C ALLELE HAD AN ASSOCIATION WITH ELEVATED ESR (P = 0.001), DAS28-ESR (P = 0.03), AND DAS28-CRP (P = 0.007), WHILE CC GENOTYPE HAD AN ASSOCIATION WITH DAS28-CRP (P = 0.015). LINKAGE DISEQUILIBRIUM AND HAPLOTYPING OF THE ALLELES OF BOTH SNPS WERE ANALYZED AS BOTH GENES ARE PRESENT ON CHROMOSOME 11, BUT NO SIGNIFICANT ASSOCIATION WAS FOUND BETWEEN ANY OF THE COMBINATIONS OF THE ALLELES (P > 0.05), DENOTING THAT (RS2251375) AND (RS3200401) ARE NOT IN LINKAGE DISEQUILIBRIUM. THERE IS NO ASSOCIATION BETWEEN H19 SNP (RS2251375) AND MALAT1 SNP (RS3200401) AND THE SUSCEPTIBILITY OF RA. HOWEVER, THERE IS AN ASSOCIATION BETWEEN H19 SNP (RS2251375) GENOTYPE CA AND MALAT1 SNP (RS3200401) GENOTYPE CC WITH RA HIGH DISEASE ACTIVITY.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                               
11  5118  32 POSSIBLE ASSOCIATION BETWEEN GERMLINE METHYLENETETRAHYDROFOLATE REDUCTASE GENE POLYMORPHISMS AND PSORIASIS RISK IN A TURKISH POPULATION. BACKGROUND: PSORIASIS IS A COMMON CHRONIC INFLAMMATORY SKIN DISEASE CAUSED BY GENETIC AND EPIGENETIC FACTORS. THERE ARE CONFLICTING RESULTS IN THE LITERATURE ABOUT THE ASSOCIATION BETWEEN PSORIASIS AND THE METHYLENETETRAHYDROFOLATE REDUCTASE GENE (MTHFR), RANGING FROM STRONG LINKAGE TO NO ASSOCIATION. AIM: TO INVESTIGATE THE ASSOCIATION BETWEEN THE GERMLINE MTHFR POLYMORPHISMS C677T AND A1298C WITH PSORIASIS RISK IN A TURKISH POPULATION. METHODS: THE STUDY ENROLLED 84 PATIENTS WITH PSORIASIS AND 212 HEALTHY CONTROLS (HCS) WITHOUT ANY HISTORY OF PSORIASIS. DNA WAS EXTRACTED FROM PERIPHERAL BLOOD SAMPLES OF PATIENTS AND HCS, AND REAL-TIME PCR WAS USED FOR GENOTYPING. RESULTS WERE COMPARED BY PEARSON CHI(2) TEST AND MULTIPLE LOGISTIC REGRESSION MODELS. RESULTS: THE FREQUENCY OF BOTH THE MTHFR 677TT AND A1298C (HOMOZYGOUS) GENOTYPES WAS STATISTICALLY SIGNIFICANTLY DIFFERENT FROM HCS. POINT MUTATIONS WERE DETECTED IN ALL PATIENTS WITH EARLY-ONSET PSORIASIS (BEFORE THE AGE OF 20 YEARS). THE T ALLELE OF MTHFR 677 AND THE C ALLELE OF MTHFR 1298 INCREASED PSORIASIS RISK BY 12.4- AND 17.0-FOLD, RESPECTIVELY, IN PATIENTS COMPARED WITH HCS. CONCLUSION: A POSSIBLE ASSOCIATION WAS DETECTED BETWEENGERMLINE MTHFR 677 C>T AND 1298 A>C GENOTYPES AND PSORIASIS RISK IN A TURKISH POPULATION. THESE RESULTS NEED TO BE CONFIRMED IN FURTHER STUDIES WITH LARGER SAMPLE SIZES.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
12  5701  33 SINGLE NUCLEOTIDE POLYMORPHISMS OF CAUDAL TYPE HOMEOBOX 1 AND 2 ARE ASSOCIATED WITH BARRETT'S ESOPHAGUS. BACKGROUND: BARRETT'S ESOPHAGUS (BE), THE PREMALIGNANT LESION OF ESOPHAGEAL ADENOCARCINOMA, IS BELIEVED TO DEVELOP AS A RESULT OF CHRONIC GASTROESOPHAGEAL REFLUX DISEASE (GERD). APPROXIMATELY 10 % OF SUBJECTS WITH GERD PROGRESS TO BE. GENETIC, EPIGENETIC AND OTHER RISK FACTORS MAY CONTRIBUTE TO THIS INTER-INDIVIDUAL VARIABILITY. CAUDAL TYPE HOMEOBOX 1 (CDX1) AND CAUDAL TYPE HOMEOBOX 2 (CDX2) PLAY IMPORTANT REGULATORY ROLES IN THE DEVELOPMENT OF HUMAN BE. AIMS: TO DETERMINE ASSOCIATIONS BETWEEN CDX1 AND CDX2 SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) AND BE. METHODS: GENOMIC DNA WAS EXTRACTED FROM BLOOD SAMPLES COLLECTED FROM BE (N = 109) AND GERD (N = 223) PATIENTS FOR GENOTYPING OF 5 SNPS EACH OF CDX1 AND CDX2 USING TAQMAN ALLELIC DISCRIMINATION ASSAYS. ODDS RATIOS AND 95 % CONFIDENCE INTERVALS OF SNPS AND HAPLOTYPES WERE CALCULATED WITH A LOGISTIC REGRESSION MODEL ADJUSTED FOR FACTORS INCLUDING AGE, SEX AND HIATAL HERNIA. INTERACTIONS BETWEEN GENETIC VARIANTS AND THESE THREE RISK FACTORS WERE ALSO ANALYZED. RESULTS: OLDER AGE (>/=50 YEARS), MALE SEX AND HIATAL HERNIA WERE SIGNIFICANTLY ASSOCIATED WITH BE (P < 0.001). FIVE VARIANTS OF CDX1 SNPS (RS3776082, RS717746 AND RS3776083), ONE CDX1 HAPLOTYPE, AND THREE VARIANTS OF CDX2 SNPS (RS4769585 AND RS3812863) WERE ASSOCIATED WITH BE (P < 0.05). STATISTICALLY SIGNIFICANT INTERACTIONS WERE DETECTED BETWEEN MOST OF THESE SNPS AND THE THREE RISK FACTORS (P < 0.05). CONCLUSION: CERTAIN SNPS OF CDX1 AND CDX2 AND THEIR INTERACTIONS WITH OTHER RISK FACTORS ARE ASSOCIATED WITH BE, AND MAY CONTRIBUTE TO HUMAN SUSCEPTIBILITY TO BE.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
13  3310  34 HIGHER ORDER GENES INTERACTION IN DNA REPAIR AND CYTOKINE GENES POLYMORPHISM AND RISK TO LUNG CANCER IN NORTH INDIANS. CONTEXT: LUNG CANCER PATHOLOGICAL PROCESS INVOLVES CUMULATIVE EFFECTS EXERTED BY GENE POLYMORPHISM(S), EPIGENETIC MODIFICATIONS, AND ALTERATIONS IN DNA REPAIR MACHINERY. FURTHER, DNA DAMAGE DUE TO OXIDATIVE STRESS, CHRONIC INFLAMMATION, AND THE INTERPLAY BETWEEN GENETIC AND ENVIRONMENTAL FACTORS IS ALSO AN ETIOLOGIC MILIEU OF THIS MALIGNANT DISEASE. AIMS: THE PRESENT STUDY AIMS TO ASSESS THE PROGNOSTIC VALUE OF DNA REPAIR, CYTOKINES, AND GST GENE POLYMORPHISM IN LUNG CANCER PATIENTS WHO HAD NOT RECEIVED ANY NEOADJUVANT THERAPY. MATERIALS AND METHODS: IN THIS CASE-CONTROL STUDY, 127 CASES AND 120 CONTROLS WERE ENROLLED. DNA FROM THE BLOOD SAMPLES OF BOTH PATIENTS AND CONTROLS WAS USED TO GENOTYPE XRCC1ARG399GLN, XPDLYS751GLN, AND INTERLEUKIN-1 (IL-1BETA) GENES BY POLYMERASE CHAIN REACTION (PCR)-RESTRICTION FRAGMENT LENGTH POLYMORPHISM METHOD, WHEREAS MULTIPLEX PCR WAS PERFORMED TO GENOTYPE GSTT1 AND GSTM1. RESULTS: BINARY LOGISTIC REGRESSION ANALYSIS SHOWED THAT XRCC1ARG399GLN-MUTANT GENOTYPE (GLN/GLN, ODDS RATIO [OR] = 4.6, 95% CONFIDENCE INTERVAL [CI]: 2.2-9.6) AND GSTT1 NULL (OR = 2.7, 95% CI: 1.6-4.5) WERE LINKED TO CANCER SUSCEPTIBILITY. GENERALIZED MULTIDIMENSIONAL REDUCTION ANALYSIS OF HIGHER ORDER GENE-GENE INTERACTION USING CROSS-VALIDATION TESTING (CVT) ACCURACY SHOWED THAT GSTT1 (CVT 0.62, P = 0.001), XPD751 AND IL-1BETA (CVT 0.6, P = 0.001), AND XRCC1399, XPD751, AND INTERLEUKIN-1 RECEPTOR ANTAGONISTS (IL-1RN) (CVT 0.98, P = 0.001) WERE SINGLE-, TWO-, AND THREE-FACTOR BEST MODEL PREDICTED, RESPECTIVELY, FOR LUNG CANCER RISK. CLASSIFICATION AND REGRESSION TREE ANALYSIS RESULTS SHOWED THAT TERMINAL NODES WHICH CONTAIN XRCC1399-MUTANT GENOTYPE (AA) HAD INCREASED THE RISK TO LUNG CANCER. CONCLUSION: THE PRESENT STUDY DEMONSTRATED THAT XRCC1399 (GLN/GLN), GSTT1, AND IL-1RN ALLELE I, I/II SERVED AS THE RISK GENOTYPES. THESE GENES COULD SERVE AS THE BIOMARKERS TO PREDICT LUNG CANCER RISK.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
14  2870  44 FUNCTIONAL GENE POLYMORPHISMS AND EXPRESSION ALTERATION OF SELECTED MICRORNAS AND THE RISK OF VARIOUS GASTRIC LESIONS IN HELICOBACTER PYLORI-RELATED GASTRIC DISEASES. BACKGROUND: HELICOBACTER PYLORI (HP) PERSISTENT INFECTION IS AN IMPORTANT PATHOGENIC FACTOR FOR A SERIES OF CHRONIC GASTRIC DISEASES FROM CHRONIC GASTRITIS TO GASTRIC CANCER. GENETIC AND EPIGENETIC ABNORMALITIES OF MICRORNAS MAY PLAY A VITAL ROLE IN THE PATHOLOGICAL EVOLUTION OF GASTRIC MUCOSA IN HELICOBACTER PYLORI-RELATED GASTRIC DISEASES (HPGD). THIS STUDY AIMED TO INVESTIGATE THE RELATIONSHIP BETWEEN MIR-146A, MIR-196A2, MIR-149, MIR-499 AND MIR-27A GENE SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) AND THEIR EXPRESSIONS WITH PATHOLOGICAL CHANGES IN GASTRIC MUCOSA, AND TO FURTHER ANALYZE THE INTERACTIONS BETWEEN SNPS AND HP. METHODS: SUBJECTS IN THIS STUDY INCLUDED PATIENTS DIAGNOSED WITH HPGD AND HEALTHY CONTROLS. MIR-146A RS2910164, MIR-196A2 RS11614913, MIR-149 RS2292832, MIR-499 RS3746444 AND MIR-27A RS895819 WERE GENOTYPED BY DIRECT SEQUENCING. FLUORESCENCE QUANTITATIVE PCR WAS USED TO DETECT MICRORNA EXPRESSIONS. GENE-GENE AND GENE-ENVIRONMENT INTERACTIONS WERE EVALUATED BY MULTIFACTOR DIMENSIONALITY REDUCTION (MDR) METHOD. RESULTS: WE FOUND THAT FREQUENCY DISTRIBUTION OF MIR-196A2 RS11614913 CT GENOTYPE IN GASTRIC PRECANCEROUS LESION (GPL) GROUP AND GASTRIC CANCER (GC) GROUP WAS SIGNIFICANTLY HIGHER THAN NORMAL CONTROL (NOR) GROUP [ADJUSTED OR = 6.16, 95%CI (1.46-26.03); ADJUSTED OR = 11.83, 95%CI (1.65-84.72), RESPECTIVELY]. CT GENOTYPE AND C ALLELE OF MIR-27A RS895819 WERE ASSOCIATED WITH INCREASED RISK OF GC [ADJUSTED OR = 10.14, 95%CI (2.25-45.77); ADJUSTED OR = 3.71, 95%CI(1.46-9.44), RESPECTIVELY]. THE MDR ANALYSIS RESULTS SHOWED THAT THE INTERACTION BETWEEN MIR-196A2 RS11614913 AND HP WAS ASSOCIATED WITH THE RISK OF GPL (P = 0.004). MEANWHILE, THE EXPRESSION LEVEL OF MIR-196A2 IN GC GROUP WAS SIGNIFICANTLY HIGHER THAN NOR, CHRONIC INFLAMMATION (CI) AND EARLY PRECANCEROUS LESION (EPL) GROUPS AMONG HP-POSITIVE SUBJECTS. AND EXPRESSIONS OF MIR-499 AND MIR-27A IN GC GROUP WERE BOTH HIGHER THAN EPL GROUP. ALSO, MIR-27A EXPRESSION IN GC GROUP WAS HIGHER THAN CI AND GASTRIC ATROPHY (GA) GROUPS. CONCLUSION: MIR-196A2 RS11614913 AND MIR-27A RS895819 MAY AFFECT THE GENETIC SUSCEPTIBILITY TO GPL OR GC. MIR-196A2 RS11614913 AND HP HAVE A SYNERGISTIC EFFECT IN THE OCCURRENCE AND DEVELOPMENT OF GPL. THE UP-REGULATION OF MIR-499, MIR-196A2 AND MIR-27A EXPRESSION CAUSED BY HP INFECTION MAY BE AN IMPORTANT MECHANISM OF GASTRIC CARCINOGENESIS.	2022	
                                                                                                                                                                               
15  5700  37 SINGLE NUCLEOTIDE POLYMORPHISM IN DNMT3B PROMOTER AND THE RISK FOR IDIOPATHIC THROMBOCYTOPENIC PURPURA IN CHINESE POPULATION. OBJECTIVE: EPIGENETIC CHANGES IN GENE EXPRESSION, INCLUDING DNA METHYLATION AND HISTONE MODIFICATIONS, MIGHT CONTRIBUTE TO AUTOIMMUNITY. DNA METHYLATION IS MEDIATED BY A FAMILY OF DNA METHYLTRANSFERASES. POLYMORPHISMS OF THE DNA METHYLTRANSFERASE 3B (DNMT3B) GENE MAY INFLUENCE DNMT3B ACTIVITY ON DNA METHYLATION, THEREBY MODULATING THE SUSCEPTIBILITY TO SOME DISEASES. THE PURPOSE OF THIS STUDY WAS TO INVESTIGATE THE ASSOCIATION BETWEEN THE SINGLE NUCLEOTIDE POLYMORPHISM (SNP) IN PROMOTER OF THE DNMT3B GENE AND THE RISK FOR DEVELOPMENT OF IDIOPATHIC THROMBOCYTOPENIC PURPURA (ITP). METHODS: IN THIS HOSPITAL-BASED CASE-CONTROL STUDY, THE DNMT3B SNP WAS GENOTYPED IN 201 PATIENTS WITH ITP AND 136 HEALTHY CONTROLS BY POLYMERASE CHAIN REACTION-RESTRICTION FRAGMENT LENGTH POLYMORPHISM. RESULTS: THE C/C GENOTYPE WAS NOT DETECTED IN BOTH THE PATIENTS WITH ITP AND THE CONTROLS. IN THE CONTROLS, THE FREQUENCIES OF T/T AND C/T GENOTYPES AND T AND C ALLELES WERE 97.8%, 2.2%, 98.9%, AND 1.1%, RESPECTIVELY. THERE WAS NO SIGNIFICANT DIFFERENCE IN GENOTYPE AND ALLELE DISTRIBUTION BETWEEN THE PATIENTS WITH ITP AND THE CONTROLS (P = 0.745 AND 0.747, RESPECTIVELY). NO SIGNIFICANT DIFFERENCE WAS OBSERVED IN GENOTYPE AND ALLELE DISTRIBUTION BETWEEN THE TWO GROUPS WHEN STRATIFIED BY THE AGE. THE SIMILAR RESULTS WERE SHOWN AMONG THE FOUR GROUPS OF PATIENTS WITH ITP: ACUTE CHILDHOOD, CHRONIC CHILDHOOD, ACUTE ADULT, AND CHRONIC ADULT. CONCLUSION: THIS POLYMORPHISM WAS DISTRIBUTED SIMILARLY BETWEEN THE PATIENTS WITH ITP AND THE CONTROLS. IT DEMONSTRATED THAT IT MAY NOT BE USED AS A STRATIFICATION MARKER TO PREDICT THE SUSCEPTIBILITY TO ITP, AT LEAST IN THE POPULATION OF NORTH CHINA.	2008	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
16  3903  36 LEP, LDLR AND APOA4 GENE POLYMORPHISMS AND THEIR RELATIONSHIP WITH THE RISK OF OVERWEIGHT, OBESITY AND CHRONIC DISEASES IN ADULTS OF THE STATE OF SUCRE, VENEZUELA. INTRODUCTION: OVERWEIGHT, OBESITY AND SOME CHRONIC DISEASES HAVE BECOME MORE PREVALENT RECENTLY. IT IS WELL KNOWN THAT THEIR CAUSES MAY BE GENETIC, EPIGENETIC, ENVIRONMENTAL, OR A MIXTURE OF THESE. OBJECTIVE: TO ANALYZE THE RELATIONSHIP BETWEEN NINE SINGLE NUCLEOTIDE POLYMORPHISMS OF GENES LEP (RS2167270), LDLR (RS885765, RS688, RS5925, RS55903358, RS5742911) AND APOA4 (RS5095, RS675, RS5110) WITH OBESITY-RELATED PHENOTYPES AND OTHER COMORBIDITIES. MATERIAL AND METHODS: WE RECRUITED 144 ADULTS (76 MALES AND 68 FEMALES, WITH AVERAGE AGES OF 29.93+/-8.29 AND 32.49+/-11.15 YEARS, RESPECTIVELY) IN THE STATE OF SUCRE, VENEZUELA. CLINICAL AND ANTHROPOMETRIC PARAMETERS WERE OBTAINED. GENOTYPE-RISK ASSOCIATIONS WERE STUDIED. WE THEN COMPARED THE AVERAGES REGISTERED FOR ANTHROPOMETRIC AND BIOCHEMICAL VARIABLES PREVIOUSLY ADJUSTED FOR BIOLOGICAL AND ENVIRONMENTAL FACTORS. RESULTS: ACCORDING TO THE BODY MASS INDEX, 38.9% OF THE INDIVIDUALS IN THE SAMPLE WERE OVERWEIGHT (25</=BMI</=29.9 KG/M2) AND 20.1% WERE OBESE (BMI>/=30 KG/M2). GENOTYPE AND ALLELE FREQUENCIES DID NOT DIFFER STATISTICALLY FOR GROUPS WITH NORMAL AND HIGH BODY MASS INDEX (OVERWEIGHT PLUS OBESITY). THE ASSOCIATION BETWEEN LDLR RS5742911 ANCESTRAL GENOTYPE A/A AND HIGH RISK CONDITION RELATED TO HDL-CHOLESTEROL WAS THE ONLY ONE FOUND TO BE SIGNIFICANT (OR=2.944, 95% CI: 1.446-5.996; P=0.003). THE DIFFERENCE IN ADJUSTED MEAN HDL-CHOLESTEROL FOR LDLR RS5742911 GENOTYPES WAS STATISTICALLY SIGNIFICANT (P=0.005) (A/A: 41.50+/-14.81 MG/DL; A/G: 45.00+/-12.07 MG/DL; G/G: 47.17+/-9.43 MG/DL). CONCLUSIONS: FOR MOST OF THE GENETIC VARIANTS STUDIED, THERE WAS AN ASSOCIATION WITH THE PRESENCE OF OVERWEIGHT AND OBESITY AMONG ANCESTRAL GENOTYPE CARRIERS, ALTHOUGH THIS WAS NOT STATISTICALLY SIGNIFICANT. THE RS5742911 POLYMORPHISM MAY BE USEFUL AS AN INDICATOR OF A RISK OF CHRONIC DISEASES.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
17  2995  40 GENETIC POLYMORPHISMS IN FOLATE PATHWAY ENZYMES, DRD4 AND GSTM1 ARE RELATED TO TEMPOROMANDIBULAR DISORDER. BACKGROUND: TEMPOROMANDIBULAR DISORDER (TMD) IS A MULTIFACTORIAL SYNDROME RELATED TO A CRITICAL PERIOD OF HUMAN LIFE. TMD HAS BEEN ASSOCIATED WITH PSYCHOLOGICAL DYSFUNCTIONS, OXIDATIVE STATE AND SEXUAL DIMORPHISM WITH COINCIDENTAL OCCURRENCE ALONG THE PUBERTAL DEVELOPMENT. IN THIS WORK WE STUDY THE ASSOCIATION BETWEEN TMD AND GENETIC POLYMORPHISMS OF FOLATE METABOLISM, NEUROTRANSMISSION, OXIDATIVE AND HORMONAL METABOLISM. FOLATE METABOLISM, WHICH DEPENDS ON GENES VARIATIONS AND DIET, IS DIRECTLY INVOLVED IN GENETIC AND EPIGENETIC VARIATIONS THAT CAN INFLUENCE THE CHANGES OF LAST GROWING PERIOD OF DEVELOPMENT IN HUMAN AND THE APPEARANCE OF THE TMD. METHODS: A CASE-CONTROL STUDY WAS DESIGNED TO EVALUATE THE IMPACT OF GENETIC POLYMORPHISMS ABOVE DESCRIBED ON TMD. A TOTAL OF 229 INDIVIDUALS (69% WOMEN) WERE INCLUDED AT THE STUDY; 86 WERE PATIENTS WITH TMD AND 143 WERE HEALTHY CONTROL SUBJECTS. SUBJECTS UNDERWENT TO A CLINICAL EXAMINATION FOLLOWING THE GUIDELINES BY THE RESEARCH DIAGNOSTIC CRITERIA FOR TEMPOROMANDIBULAR DISORDERS (RDC/TMD). GENOTYPING OF 20 SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS), DIVIDED IN TWO GROUPS, WAS PERFORMED BY MULTIPLEX MINISEQUENCING PRECEDED BY MULTIPLEX PCR. OTHER SEVEN GENETIC POLYMORPHISMS DIFFERENT FROM SNPS (DELETIONS, INSERTIONS, TANDEM REPEAT, NULL GENOTYPE) WERE ACHIEVED BY A MULTIPLEX-PCR. A CHI-SQUARE TEST WAS PERFORMED TO DETERMINE THE DIFFERENCES IN GENOTYPE AND ALLELIC FREQUENCIES BETWEEN TMD PATIENTS AND HEALTHY SUBJECTS. TO ESTIMATE TMD RISK, IN THOSE POLYMORPHISMS THAT SHOWN SIGNIFICANT DIFFERENCES, ODDS RATIO (OR) WITH A 95% OF CONFIDENCE INTERVAL WERE CALCULATED. RESULTS: SIX OF THE POLYMORPHISMS SHOWED STATISTICAL ASSOCIATIONS WITH TMD. FOUR OF THEM ARE RELATED TO ENZYMES OF FOLATES METABOLISM: ALLELE G OF SERINE HYDOXYMETHYLTRANSFERASE 1 (SHMT1) RS1979277 (OR = 3.99; 95%CI 1.72, 9.25; P = 0.002), ALLELE G OF SHMT1 RS638416 (OR = 2.80; 95%CI 1.51, 5.21; P = 0.013), ALLELE T OF METHYLENTETRAHYDROFOLATE DEHYDROGENASE (MTHFD) RS2236225 (OR = 3.09; 95%CI 1.27, 7.50; P = 0.016) AND ALLELE A OF METHIONINE SYNTHASE REDUCTASE (MTRR) RS1801394 (OR = 2.35; 95CI 1.10, 5.00; P = 0.037). AN INFLAMMATORY OXIDATIVE STRESS ENZYME, GLUTHATIONE S-TRANFERASE MU-1(GSTM1), NULL ALLELE (OR = 2.21; 95%CI 1.24, 4.36; P = 0.030) AND A NEUROTRANSMISSION RECEPTOR, DOPAMINE RECEPTOR D4 (DRD4), LONG ALLELE OF 48 BP-REPEAT (OR = 3.62; 95%CI 0.76, 17.26; P = 0.161). CONCLUSIONS: SOME GENETIC POLYMORPHISMS RELATED TO FOLATES METABOLISM, INFLAMMATORY OXIDATIVE STRESS, AND NEUROTRANSMISSION RESPONSES TO PAIN, HAS BEEN SIGNIFICANTLY ASSOCIATED TO TMD SYNDROME.	2011	

18  4244  29 METHYLATION STATUS OF COX-2 IN BLOOD LEUKOCYTE DNA AND RISK OF GASTRIC CANCER IN A HIGH-RISK CHINESE POPULATION. BACKGROUND: METHYLATION IS A COMMON EPIGENETIC MODIFICATION WHICH MAY PLAY A CRUCIAL ROLE IN CANCER DEVELOPMENT. TO INVESTIGATE THE ASSOCIATION BETWEEN METHYLATION OF COX-2 IN BLOOD LEUKOCYTE DNA AND RISK OF GASTRIC CANCER (GC), A NESTED CASE-CONTROL STUDY WAS CONDUCTED IN LINQU COUNTY, SHANDONG PROVINCE, A HIGH RISK AREA OF GC IN CHINA. METHODS: ASSOCIATION BETWEEN BLOOD LEUKOCYTE DNA METHYLATION OF COX-2 AND RISK OF GC WAS INVESTIGATED IN 133 GCS AND 285 SUPERFICIAL GASTRITIS (SG)/ CHRONIC ATROPHIC GASTRITIS (CAG). THE TEMPORAL TREND OF COX-2 METHYLATION LEVEL DURING GC DEVELOPMENT WAS FURTHER EXPLORED IN 74 PRE-GC AND 95 POST-GC SAMPLES (INCLUDING 31 CASES WITH BOTH PRE- AND POST-GC SAMPLES). IN ADDITION, THE ASSOCIATION OF DNA METHYLATION AND RISK OF PROGRESSION TO GC WAS EVALUATED IN 74 PRE-GC SAMPLES AND THEIR RELEVANT INTESTINAL METAPLASIA (IM)/DYSPLASIA (DYS) CONTROLS. METHYLATION LEVEL WAS DETERMINED BY QUANTITATIVE METHYLATION-SPECIFIC PCR (QMSP). ODDS RATIOS (ORS) AND 95% CONFIDENCE INTERVALS (CIS) WERE CALCULATED BY UNCONDITIONAL LOGISTIC REGRESSION ANALYSIS. RESULTS: THE MEDIANS OF COX-2 METHYLATION LEVELS WERE 2.3% AND 2.2% IN GC CASES AND CONTROLS, RESPECTIVELY. NO SIGNIFICANT ASSOCIATION WAS FOUND BETWEEN COX-2 METHYLATION AND RISK OF GC (OR, 1.15; 95% CI: 0.70-1.88). HOWEVER, THE TEMPORAL TREND ANALYSIS SHOWED THAT COX-2 METHYLATION LEVELS WERE ELEVATED AT 1-4 YEARS AHEAD OF CLINICAL GC DIAGNOSIS COMPARED WITH THE YEAR OF GC DIAGNOSIS (3.0% VS. 2.2%, P=0.01). FURTHER VALIDATION IN 31 GCS WITH BOTH PRE- AND POST-GC SAMPLES INDICATED THAT COX-2 METHYLATION LEVELS WERE SIGNIFICANTLY DECREASED AT THE YEAR OF GC DIAGNOSIS COMPARED WITH PRE-GC SAMPLES (1.5% VS. 2.5%, P=0.02). NO SIGNIFICANT ASSOCIATION BETWEEN COX-2 METHYLATION AND RISK OF PROGRESSION TO GC WAS FOUND IN SUBJECTS WITH IM (OR, 0.50; 95% CI: 0.18-1.42) OR DYS (OR, 0.70; 95% CI: 0.23-2.18). ADDITIONALLY, WE FOUND THAT ELDER PEOPLE HAD INCREASED RISK OF COX-2 HYPERMETHYLATION (OR, 1.55; 95% CI: 1.02-2.36) AND SUBJECTS WHO EVER INFECTED WITH H. PYLORI HAD DECREASED RISK OF COX-2 HYPERMETHYLATION (OR, 0.54; 95% CI: 0.34-0.88). CONCLUSIONS: COX-2 METHYLATION EXISTS IN BLOOD LEUKOCYTE DNA BUT AT A LOW LEVEL. COX-2 METHYLATION LEVELS IN BLOOD LEUKOCYTE DNA MAY CHANGE DURING GC DEVELOPMENT.	2015	
                                                                                                                                                                                                                                                                                                                      
19  2746  22 EXPRESSION ANALYSIS OF LONG NON-CODING RNAS AND THEIR TARGET GENES IN MULTIPLE SCLEROSIS PATIENTS. MULTIPLE SCLEROSIS (MS) IS A PROGRESSIVE CHRONIC AUTOIMMUNE-MEDIATED DISEASE. RECENTLY, LONG NON-CODING RNAS (LNCRNAS) ARE CHARACTERIZED TO PARTICIPATE IN THE ADJUSTMENT OF IMMUNE RESPONSES. HERE, WE EVALUATED THE EXPRESSION LEVELS OF GSTT1-AS1 AND IFNG-AS1 LNCRNAS AND THEIR TARGETS (TNF AND IFNG, RESPECTIVELY) IN IRANIAN MS PATIENTS.IN THIS CASE-CONTROL STUDY, 50 RELAPSING-REMITTING MS PATIENTS AND 50 HEALTHY SUBJECTS WERE RECRUITED. EXPRESSIONS OF GSTT1-AS1 AND IFNG-AS1 LNCRNAS, AS WELL AS TNF AND IFNG GENES, WERE ASSESSED IN THEIR PERIPHERAL BLOOD SAMPLES BY SYBR GREEN-BASED REAL-TIME QUANTITATIVE PCR.EXPRESSION LEVELS OF GSTT1-AS1 AND IFNG-AS1 LNCRNAS WERE BOTH SIGNIFICANTLY DOWNREGULATED (P VALUES 0.032 AND 0.013, RESPECTIVELY). ON THE OTHER HAND, THE EXPRESSION OF TNF AND IFNG SHOWED INCREASED LEVELS, HOWEVER, DID NOT REACH STATISTICAL SIGNIFICANCE AFTER OUR ANALYSIS (P > 0.05). SPEARMAN CORRELATION ANALYSIS SHOWED THAT GSTT1-AS1 HAD A SIGNIFICANT POSITIVE MODERATE CORRELATION WITH IFNG-AS1 (R = 0.541, P < 0.0001), IFNG (R = 0.329, P = 0.001), AND TNF (R = 0.204, P = 0.041). ALSO, IFNG-AS1 REVEALED THE SAME CORRELATION WITH IFNG (R = 0.475, P < 0.0001) AS WELL AS TNF (R = 0.399, P < 0.0001). FURTHERMORE, GSTT1-AS1 (R = 0.313, P = 0.027) AND (IFNG R = 0.478, P < 0.0001) DEMONSTRATED A SIGNIFICANT POSITIVE CORRELATION WITH AGE AT ONSET.BRIEFLY, THE CURRENT STUDY PROVIDED FOR THE FIRST TIME DYSREGULATION OF GSTT1-AS1 AND IFNG-AS LNCRNAS NETWORK IN MS, WHICH HIGHLIGHTS THE SIGNIFICANT ROLE OF EPIGENETIC PATHWAYS IN THIS AUTOIMMUNE DISORDER. LARGER SAMPLE SIZE AND FURTHER INVESTIGATION ASSAYS COULD SHED LIGHT ON THE UNDERLYING MECHANISMS IN THIS AREA OF SCIENCE.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
20   659  25 BLOOD GLOBAL DNA METHYLATION IS DECREASED IN NON-SEVERE CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) PATIENTS. BACKGROUND: ALTERATIONS IN GLOBAL DNA METHYLATION HAVE BEEN ASSOCIATED WITH OXIDATIVE STRESS (OS). SINCE CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) IS CHARACTERIZED BY INCREASED OXIDATIVE STRESS WE AIMED TO EVALUATE THE LEVELS OF GLOBAL DNA METHYLATION IN THIS PATIENT GROUP. METHODS: WE ASSESSED METHYLCYTOSINE (MCYT) LEVELS IN DNA FROM BLOOD COLLECTED IN 43 COPD PATIENTS (29 WITH MILD AND 14 WITH MODERATE DISEASE) AND 43 AGE- AND SEX-MATCHED HEALTHY CONTROLS. RESULTS: DNA METHYLATION WAS SIGNIFICANTLY LOWER IN COPD PATIENTS VS. CONTROLS (4.20 +/- 0.18% MCYT VS. 4.29 +/- 0.18% MCYT, P = 0.02). FURTHERMORE, DNA METHYLATION IN COPD PATIENTS WITH MODERATE DISEASE WAS SIGNIFICANTLY LOWER THAN THAT IN PATIENTS WITH MILD DISEASE (4.14 +/- 0.15% MCYT VS. 4.23 +/- 0.19% MCYT, P < 0.05). UNIVARIATE LOGISTIC REGRESSION ANALYSIS SHOWED THAT LOWER DNA METHYLATION LEVELS WERE ASSOCIATED WITH PRESENCE OF COPD (CRUDE OR = 0.06, 95% CI 0.00 TO 0.67, P = 0.023). THIS RELATIONSHIP REMAINED SIGNIFICANT AFTER ADJUSTING FOR SEVERAL CONFOUNDERS (OR 0.03, 95% CI 0.00 TO 0.67; P = 0.028). RECEIVER OPERATING CHARACTERISTICS (ROC) CURVE ANALYSIS DEMONSTRATED THE AREA UNDER THE CURVE OF MCYT WAS 0.646, WITH 46.6% SENSITIVITY AND 79.1% SPECIFICITY FOR PRESENCE OF COPD. CONCLUSIONS: THERE WERE NO SIGNIFICANT CORRELATIONS BETWEEN METHYLATION AND OS INDICES. THE PRESENCE AND SEVERITY OF COPD IS ASSOCIATED WITH PROGRESSIVELY LOWER DNA METHYLATION IN BLOOD. HOWEVER, THIS EPIGENETIC ALTERATION SEEMS INDEPENDENT OF OXIDATIVE STRESS.	2017