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Human gut metagenome

ABSTRACT: UKM Post-Gestational Diabetes Women Samples

PROVIDER: PRJNA717644 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14160461.fastq.gz	Fastqsanger.gz
	SRR14160462.fastq.gz	Fastqsanger.gz
	SRR14160463.fastq.gz	Fastqsanger.gz
	SRR14160464.fastq.gz	Fastqsanger.gz
	SRR14160465.fastq.gz	Fastqsanger.gz

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Project description:To characterize the human plasma microtranscriptome profile at first trimester of pregnancy in presence or not of pregnancy complications, we sequenced microRNAs in plasma samples collected from pregnant women between the 6th and the 15th weeks of pregnancy as a replication cohort. We then performed differential expression analyses to assess the miRNA profile diffrences according to the presence of pregnancy complications or not (i.e. Gestational diabetes mellitus, Gestational hypertension or preeclampsia vs. normal pregnancies).

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Characterization of human plasma pregnancy-associated miRNAs at first trimester and their association with pregnancy complications [cohort 1]

Project description:To characterize the human plasma microtranscriptome profile at first trimester of pregnancy in presence or not of pregnancy complications, we sequenced microRNAs in plasma samples collected from pregnant women between the 4th and the 16th weeks of pregnancy. We then performed differential expression analyses to assess the miRNA profile diffrences according to the presence of pregnancy complications or not (i.e. Gestational diabetes mellitus, Gestational hypertension or preeclampsia vs. normal pregnancies).

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Project description:Primary endothelial cells from umbilical cord vein (HUVEC) obtained at delivery from gestational diabetic (GD) women, represent an expedient model for the study of the effects of chronic HG in vivo. In fetal tissues genome-wide epigenetic changes are likely to occur with specific long term and even trans-generational effects. We have utilized this model to study the effects of chronic hyperglycemia on the transcriptome and to verify the presence of specific epigenetic changes associated to chronic HG in vascular cells. HUVEC cells from Umbilical cords of 3 Caucasian Gestational Diabetes women were compared with HUVEC cells from umbilical of from 3 Caucasian non diabetic women matching for age and Body Mass Index. [sample collection] Umbilical cords were obtained from 3 Caucasian Gestational diabetes women (diagnosed not later than 28 th gestational week - gw) and from 3 Caucasian non diabetic women matching for age and Body Mass Index (BMI). All pregnants signed an informed consent. All donors were normotensive, and underwent a 100 g 3 hours Oral Glucose Tolerance Test (OGTT) between the 24 -34th gw. Each woman performed a 7 points-blood glucose monitoring on 3 days at week 34 -36th gw.

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Reduced representation bisulfite sequencing (RRBS) methylation profiles of placenta and umbilical cord blood with or without gestational diabetes mellitus (GDM)

Project description:Objective: To explore the characteristics and underlying molecular mechanisms of genome-scale expression profiles of women with- or without- gestational diabetes mellitus and their offspring. Materials and Methods: We recruited a group of 21 pregnant women with gestational diabetes mellitus (GDM) and 20 healthy pregnant women as controls. For each pregnant women, RRBS were performed using the placenta and paired neonatal umbilical cord blood specimens. Differentially methylated regions (DMRs) were identified. Then, functional enrichment analysis was performed to differential methylated genes (DMGs) separately or interactively in placenta and umbilical cord blood. Results: Through the comparison of GDM and healthy samples, 2779 and 141 DMRs were identified from placenta and umbilical cord blood, respectively. Functional enrichment analysis showed that the placenta methylation and expression profiles of GDM women mirrored the molecular characteristics of “type II diabetes” and “insulin resistance”. Methylation-altered genes in umbilical cord blood were associated with pathways “type II diabetes” and “cholesterol metabolism”. DMGs illustrated significant overlaps among placenta and umbilical cord blood samples, and the overlapping DMGs were associated with cholesterol metabolism. Conclusions: Our research demonstrated the epigenomic alternations of GDM mothers and offspring. Our findings emphasized the importance of epigenetic modifications in the communication between pregnant women with GDM and offspring, and provided reference for the prevention, control, treatment, and intervention of perinatal deleterious events of GDM and neonatal complications.

2022-05-31 | GSE203169 | GEO

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