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KMID : 1033620160430010015
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Clinical and Experimental Reproductive Medicine
2016 Volume.43 No. 1 p.15 ~ p.25
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Pregnancy outcomes following the administration of high doses of dexamethasone in early pregnancy
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Hasan Namdar Ahmadabad
Sabah Kayvan Jafari
Maryam Nezafat Firizi
Ali Reza Abbaspour
Fahime Ghafoori Gharib
Yusef Ghobadi
Samira Gholizadeh
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Abstract
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Objective: In the present study, we aimed to evaluate the effects of high doses of dexamethasone (DEX) in early pregnancy on pregnancy outcomes.
Methods: Pregnant BALB/c mice were treated with high-dose DEX in the experimental group or saline in the control group on gestational days (GDs) 0.5 to 4.5. Pregnant mice were sacrificed on GDs 7.5, 13.5, or 18.5 and their peripheral blood, placentas, fetuses, and uterine tissue were collected. Decidual and placenta cell supernatants were examined to evaluate the effect of DEX on the proliferation of mononuclear cells, the quantity of uterine macrophages and uterine natural killer (uNK) cells, and levels of progesterone and 17β-estradiol, as determined by an 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide assay, immunohistochemistry, and enzyme-linked immunosorbent assay, respectively. We also were measured fetal and placental growth parameters on GD 18.5.
Results: We found that high doses of DEX were associated with an increased abortion rate, enhancement of the immunosuppressive effect of the decidua, alterations in placental growth parameters, decreased progesterone and 17β-estradiol levels, and a reduced frequency of macrophages and uNK cells.
Conclusion: Our data suggest that the high-dose administration of DEX during early pregnancy negatively affected pregnancy outcomes.
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KEYWORD
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Abortion, Dexamethasone, Estradiol, Macrophage, Natural killer cell, Pregnancy, Progesterone
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