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  • Title: Up-regulation of TGFBI and TGFB2 in the plasma of gestational diabetes mellitus patients and its clinical significance.
    Author: Zhou H, Chen P, Dai F, Wang J.
    Journal: Ir J Med Sci; 2022 Oct; 191(5):2029-2033. PubMed ID: 34792732.
    Abstract:
    BACKGROUND: Gestational diabetes mellitus (GDM) reflects a deficiency in the relative need for insulin during pregnancy, as well as temporary metabolic stress in the placenta and fetus. Our study aimed to research the potential diagnostic value of transforming growth factor-beta-induced protein ig-h3 (TGFBI) and transforming growth factor beta-2 proprotein (TGFB2) for GDM patients. METHODS: Online database Gene Expression Omnibus (GEO) was used to screen for different expressed genes (DEGs) associated with GDM. Meanwhile, KEGG and GO were used to analyze the molecular functions as well as pathways of enriched DEGs. One hundred ten pregnant women diagnosed with GDM and 110 healthy controls were enrolled, of whose placenta and fasting venous blood samples were collected. mRNA expression levels were determined by real-time quantitative polymerase chain reaction (RT-qPCR), and fasting blood glucose (FBG) was measured by the clinical lab of hospital. Furthermore, receiver operating characteristics curve (ROC) analysis was performed to evaluate the sensitivity and specificity of detection indexed in the placenta and plasma of GDM patients. Finally, Pearson and Spearman analysis was used for the correlation analysis. RESULTS: After GEO data analysis, TGFBI and TGFB2 were identified as the most significantly up-regulated genes of GDM. TGFBI and TGFB2 expressions in placenta and plasma samples of GDM patients were in line with bioinformatic analysis. Meanwhile, the area under the curve (AUC) of TGFBI in the placenta and plasma for the diagnosis of GDM were 0.8783 (95% CI, 0.8281 to 0.9284) and 0.7832 (95% CI, 0.7215 to 0.8449) while for TGFB2 were 0.9225 (95% CI, 0.8829 to 0.9621) and 0.8961 (95% CI, 0.8526 to 0.9396). Besides, levels of TGFBI along with TGFB2 in the placenta were positively correlated with that in the plasma of GDM patients. Furthermore, both TGFBI and TGFB2 expressions in the plasma were positively correlated with FBG levels of the GDM patients. CONCLUSIONS: TGFBI and TGFB2 were up-regulated in the placenta and plasma of GDM patients, and TGFBI and TGFB2 in the plasma are potent to be diagnostic markers for the GDM.
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