Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1299139 | ENA |
REPOSITORIES: ENA
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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.
2013-08-08 | E-GEOD-49524 | biostudies-arrayexpress
Project description:Intracerebral hemorrhage (ICH) induces alterations in the gut microbiota composition, significantly impacting neuroinflammation post-ICH. However, the impact of gut microbiota absence on neuroinflammation following ICH-induced brain injury remain unexplored. Here, we observed that the gut microbiota absence was associated with reduced neuroinflammation, alleviated neurological dysfunction, and mitigated gut barrier dysfunction post-ICH. In contrast, recolonization of microbiota from ICH-induced SPF mice by transplantation of fecal microbiota (FMT) exacerbated brain injury and gut impairment post-ICH. Additionally, microglia with transcriptional changes mediated the protective effects of gut microbiota absence on brain injury, with Apoe emerging as a hub gene. Subsequently, Apoe deficiency in peri-hematomal microglia was associated with improved brain injury. Finally, we revealed that gut microbiota influence brain injury and gut impairment via gut-derived short-chain fatty acids (SCFA).
2024-05-13 | GSE266602 | GEO
Project description:Gestational diabetes (GDM) is a distinctive form of diabetes that first presents in pregnancy. While most women return to normoglycemia after delivery, they are predisposed to an accelerated development of type 2 diabetes. Current prevention strategies remain limited due to our incomplete understanding of the early underpinnings of progression. We therefore examined the protein profiles of women shortly after a GDM pregnancy (using a nested case-control study design within the Study of Women, Infant Feeding and Type 2 Diabetes After GDM Pregnancy) for a comprehensive mechanistic inquiry. At 6-9 weeks postpartum (baseline), differences between women who later developed diabetes (case group) and those who did not (control group) were detected. Notably, protein profiles comprised protease inhibitors, extracellular matrix components, and lipoprotein molecules involved in inflammation. We also identified co-expression networks of differentially altered triglycerides and protein involved in wound healing, highlighting the interplay between dyslipidemia and inflammation. Overall, our findings warrant earlier intervention than previously thought, as defects in postpartum wound healing after a GDM pregnancy, in association with dysmetabolism and insulin resistance, may accelerate type 2 diabetes progression.
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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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