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- W2332743608 abstract "Glucocorticoids (GC) often are administered during pregnancy, but despite their widespread use in clinical practice, it remains uncertain how GC exposure affects pro-angiogenic factors and their receptors. We investigated the effects of GC on vascular endothelial growth factor (VEGF), placental growth factor (PIGF), vascular endothelial growth factor receptor 1 (VEGFR1) and vascular endothelial growth factor receptor 2 (VEGFR2) protein and mRNA expressions and investigated the possible association of GC with the Akt/mTOR pathway. We incubated human umbilical vein endothelial cells (HUVECs) with a synthetic GC, triamcinolone acetonide (TA). TA administration caused decreased cellular and soluble VEGF and VEGFR1 protein expressions and increased soluble VEGFR2 expression. VEGF, VEGFR1 and VEGFR2 mRNA expressions were altered in a time and dose dependent manner. PIGF protein expression was unaffected by TA treatment, but PIGF mRNA expression decreased in a dose dependent manner after incubation for 48 and 72 h. Phospho-mTOR and phospho-Akt expressions were unaffected. Phospho-p70S6K and phospho-4EBP1 protein expressions and the vascular network forming capacity of HUVECs decreased in a dose dependent manner. We found that GC exert detrimental effects on angiogenesis by altering cellular and soluble angiogenic protein and mRNA levels, and vascular network forming capacities by the Akt/mTOR pathway." @default.
- W2332743608 created "2016-06-24" @default.
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- W2332743608 date "2016-03-23" @default.
- W2332743608 modified "2023-10-14" @default.
- W2332743608 title "Glucocorticoid effects on angiogenesis are associated with mTOR pathway activity" @default.
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- W2332743608 doi "https://doi.org/10.3109/10520295.2016.1161234" @default.
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