Fetal growth restriction (FGR) is often associated with
impaired placental function. Hypoxia within the placenta can trigger molecular
responses that influence fetal development, but the relationship between oxygen
availability, reactive oxygen species (ROS), and growth restriction is complex.

Which mechanistic scenario would best explain
how placental hypoxia contributes to fetal growth restriction?

Question

Fetal growth restriction (FGR) is often associated with
impaired placental function. Hypoxia within the placenta can trigger molecular
responses that influence fetal development, but the relationship between oxygen
availability, reactive oxygen species (ROS), and growth restriction is complex.

Which mechanistic scenario would best explain
how placental hypoxia contributes to fetal growth restriction?

Accepted Answer

Reduced
placental blood flow leads to hypoxia, which triggers secretion of factors that
limit fetal growth, while also increasing ROS that exacerbate placental
dysfunction

Answer

Hypoxia
directly generates ROS, which independently cause fetal growth restriction
without involvement of other placental factors

Answer

Maternal
systemic hypoxia alone causes placental hypoxia and fetal growth restriction,
without involvement of placental blood flow or local signalling

Answer

Excess
ROS production causes hypoxia in the placenta, which then triggers fetal growth
restriction

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Fetal growth restriction (FGR) is often associated with impaired placental func...

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