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• W2022338193 abstract "OBJECTIVES: The purpose of our study was to establish an in vitro tissue culture system to studyeicosanoid metabolism in first-trimester trophoblastic tissue. Thromboxane A2, a potent vasoconstrictor, and prostacyclin, a potent vasodilator, were analyzed to evaluate their production in early pregnancy. STUDY DESIGN: Trophoblastic tissue was obtained via transabdominal chorionic vinous sampling from 33pregnancies at 9 to 12 weeks' gestation for cytogenetic diagnosis. Initially, tissue obtained from the cytogenetics lab was morphologically consistent with villous core cells. Through altering cell density and passage, the cells became morphologically consistent with cytotrophoblasts. The cell lines were exposed to arachidonic acid (50 μmol/L) and aspirin (1 to 100 μmol/L) for 24 hours. Thromboxane B2 and 6-keto prostaglandin F2aα were measured by radioimmunoassay. RESULTS: Villous core cells and cytotrophoblasts increased production of thromboxane A2 andprostacyclin in the presence of arachidonic acid (p < 0.002). The villous core cells produced more thromboxane A2 and prostacyclin than cytotrophoblasts (p < 0.02). A significant inhibition of both thromboxane A2 and prostacyclin production was seen in the presence of 100 μmol/L aspirin in both cell types (p < 0.05). CONCLUSIONS: This model may be useful for studying placental function in the first trimester becauseindividual placental compartments can be evaluated in tissue culture. At the cellular level we were not able to detect a preferential decrease in thromboxane A2 production in the presence of aspirin (1 to 100 μmol/L). (Am J Obstet Gynecol 1992;167:1046–52.)" @default.
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• W2022338193 date "1992-10-01" @default.
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• W2022338193 title "Study of thromboxane and prostacyclin metabolism in an invitro model of first-trimester human trophoblast" @default.
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• W2022338193 doi "https://doi.org/10.1016/s0002-9378(12)80036-6" @default.
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