Abstract 549: Angiotensin II Attenuates Apelin-36 Release from Human Placental Chorionic Villi
| Autor: | Liliya M Yamaleyeva, K. Bridget Brosnihan, Lauren Anton, Carolynne McGee, Heather L Mertz, David C Merrill |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Hypertension. 62 |
| ISSN: | 1524-4563 0194-911X |
| DOI: | 10.1161/hyp.62.suppl_1.a549 |
| Popis: | Angiotensin II (Ang II) and apelin have opposing actions in the regulation of blood pressure, vascular tone and angiogenesis, factors known to be important in pregnancy. Chorionic villi (CV) are essential for the transport of oxygen and metabolites in the maternal-fetal interface. Previous studies from our group demonstrated the upregulation of Ang II in the CV of preeclamptic women. Since the interaction between Ang II and apelin have been suggested in the cardiovascular system, we determined whether Ang II alters the release of apelin from the placental CV obtained from normotensive pregnant (NP) and preeclamptic (PRE) women. We also established whether Ang-(1-7) influences apelin release from the same set of tissue samples. CV were dissected from the placental tissue, washed and incubated for 0, 2 and 16 hours in DMEM/F12 media with or without Ang II (1 nM and 1 μM) or Ang-(1-7) (1 nM and 1 μM) under controlled O2 and CO2 tensions. The unstimulated release of apelin measured by a competitive radioimmunoassay was significantly reduced in the conditioned media from PRE compared to NP chorionic villi at 2 hrs (PRE: 181.1 ± 31 vs. NP: 309.5 ± 51.4 pg/ml, p |
| Databáze: | OpenAIRE |
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