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- W67376332 abstract "The interrelationship between fetal iron uptake and maternal iron metabolism has been studied in the guinea pig in the course of pregnancy. The rapid increase of the maternal need for iron during the period of fast increasing rates of placental iron transfer is largely compensated for by increased intestinal absorption. No enhanced mobilisation of iron from the liver and spleen iron stores could be demonstrated. The plasma iron turnover, corrected for the transplacental iron transfer rate, remained constant during pregnancy. This means that not only the mobilisation of iron from the stores remains principally unchanged, but also the supply of iron to the maternal organs and tissues. The haemoglobin concentration decreased by about 15% during the period of rapid fetal growth and iron uptake. The maternal blood volume increased during this very period and explained most of the observed reduction. Intestinal iron absorption increases. At day 55 of pregnancy placental iron transfer is maximal. It could be shown that a day 55 the rate of intestinal iron uptake equals the rate of iron transfer across the placentas. It is evident that pregnancy effects a direct influence on intestinal iron absorption, independent of the magnitude of the maternal iron stores. How this influence is realized without changing the iron kinetics of the maternal stores, cannot be explained with the prevailing theory." @default.
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- W67376332 date "1983-06-01" @default.
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- W67376332 title "Iron metabolism and placental iron transfer in the guinea pig." @default.
- W67376332 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/6875221" @default.
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