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Κυριακή 11 Ιουλίου 2021

In vitro fertilization is associated with placental accelerated villous maturation

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Int J Clin Exp Pathol. 2021 Jun 15;14(6):734-740. eCollection 2021.

ABSTRACT

OBJECTIVE: Accelerated placental maturation is regarded as a sign of vascular malperfusion and is often interpreted as a compensatory response by the placenta. In vitro embryo culture affects placental development. This study assessed placental maturation in spontaneous conceived and in vitro conceived pregnancies.

METHODS: Retrospective cohort study on a single center between 2014 and 2017. For this study, preterm placentas of singleton pregnancies between 24 and 36 weeks were considered. Routine placental examinations were retrospectively reviewed.

RESULTS: During the considered period, 423 placentas of singleton pregnancies were assessed. Three hundred ninety-six placentas were from spontaneous conception and 20 from in vitro fertilization and embryo transfer (IVF/ET). IVF/ET was significantly associated with accelerated villous maturation (AVM) and distal villous hypoplasia (DVH) (P<0.05).

CONCLUSIONS: Placental AVM and DVH were significantly associated with in vitro fertilization in singleton pregnancies. This result supports the hypothesis that AVM is a compensatory response by the placenta to improve its transport capacity in specific settings such as in vitro fertilization.

PMID:34239675 | PMC:PMC8255202

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