The Effect of Gestational Age on Mitochondrial Properties of the Mouse Placenta

Overview

Journal Reprod Fertil

Specialty Reproductive Medicine

Date 2022 Mar 16

PMID 35291465

Authors

Lucy A Bartho

Joshua J Fisher

Sarah L Walton

Anthony V Perkins

James S M Cuffe

Affiliations

Soon will be listed here.

Abstract

Lay Summary: Human pregnancy lasts approximately 266 days. If a baby is born early, organs may be poorly formed but if pregnancy continues past this time, stillbirth risk is increased. Gestational duration is regulated by the placenta. As the placenta approaches the end of pregnancy, it displays properties similar to tissues from aged individuals. However, it is unknown how this placental ageing contributes to pregnancy duration. This study characterised normal placental ageing by measuring properties of mitochondria in healthy placentas collected at four different gestational ages ranging from 7 days before birth to 1 day before birth of the 19-day mouse pregnancy. We found that mitochondrial number increased per cell but that a marker of mitochondrial function was reduced. Proteins that control mitochondrial number, morphology and function also changed over time. This work lays the platform to understand how placental ageing contributes to adverse pregnancy outcomes related to altered pregnancy duration.

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