Project description:The microRNA oligo microarrays were used to determine expression profiles of peripheral blood mononuclear cells from type 1 diabetes mellitus (T1DM) patients, aiming the identification of possible disease related MicroRNAs.
Project description:The microRNA oligo microarrays were used to determine expression profiles of peripheral blood mononuclear cells from type 2 diabetes mellitus (T2DM) patients, aiming the identification of possible disease related MicroRNAs.
Project description:The microRNA oligo microarrays were used to determine expression profiles of peripheral blood mononuclear cells from type 2 diabetes mellitus (T2DM) patients, aiming the identification of possible disease related MicroRNAs.
Project description:Up until now, no study has looked specifically at epigenomic landscapes throughout twin samples, discordant for Anorexia nervosa (AN). Our goal was to find evidence to confirm the hypothesis that epigenetic variations play a key role in the aetiology of AN. In this study, we quantified genome-wide patterns of DNA methylation using the Infinium Human DNA Methylation EPIC BeadChip array (850K) in DNA samples isolated from whole blood collected from a group of 7 monozygotic twin pairs discordant for AN. Results were then validated performing a genome-wide DNA methylation profiling using DNA extracted from whole blood of a group of non-family related AN patients and a group of healthy controls. Our first analysis using the twin sample revealed 9 CpGs associated to a gene. The validation analysis showed two statistically significant CpGs with the rank regression method related to two genes associated to metabolic traits, PPP2R2C and CHST1. When doing beta regression, 6 of them showed statistically significant differences, including 3 CpGs associated to genes JAM3, UBAP2L and SYNJ2.Finally, the overall pattern of results shows genetic links to phenotypes which the literature has constantly related to AN, including metabolic and psychological traits. The genes PPP2R2C and CHST1 have both been linked to the metabolic traits type 2 diabetes through GWAS studies. The genes UBAP2L and SYNJ2 have been related to other psychiatric comorbidity.
Project description:DNA methylation may be involved in development of type 1 diabetes (T1D), but previous epigenome-wide association studies were conducted among cases with clinically diagnosed diabetes. Using multiple pre-disease peripheral blood samples on the Illumina 450K and EPIC platforms, we investigated longitudinal methylation differences between 87 T1D cases and 87 controls from the prospective Diabetes Autoimmunity Study in the Young (DAISY) cohort. Change in methylation with age differed between cases and controls in 10 regions. Average longitudinal methylation differed between cases and controls at two genomic positions and 28 regions. Some methylation differences were detectable and consistent as early as birth, including before and after the onset of preclinical islet autoimmunity. Results map to transcription factors, other protein coding genes, and non-coding regions of the genome with regulatory potential. The identification of methylation differences that predate islet autoimmunity and clinical diagnosis may suggest a role for epigenetics in T1D pathogenesis.
Project description:The microRNA oligo microarrays were used to determine expression profiles of peripheral blood mononuclear cells from control healthy individuals and compare to type 2 diabetes mellitus (T2DM) patients, aiming the identification of possible disease related MicroRNAs.
Project description:We determined the genes that were differentially expressed between fulminant type 1 diabetes and classical type 1A diabetes using gene expression microarray in peripheral blood cells.
Project description:We determined the genes that were differentially expressed between fulminant type 1 diabetes and classical type 1A diabetes or healthy control using gene expression microarray in peripheral blood cells.
Project description:Genome-wide transcriptional survey in peripheral blood mononuclear cells (PBMCs) by RNA-Seq in schoolchildren living in an endemic area in Gabon, with and without Schistosoma haematobium infection before and after treatment with the anthelminthic drug praziquantel.
Project description:Genome-wide transcriptional survey in peripheral blood mononuclear cells (PBMCs) by RNA-Seq in schoolchildren living in an endemic area in Gabon, with and without Schistosoma haematobium infection before and after treatment with the anthelminthic drug praziquantel.
