期刊
PEDIATRIC NEPHROLOGY
卷 30, 期 12, 页码 2085-2098出版社
SPRINGER
DOI: 10.1007/s00467-013-2666-6
关键词
Renal development; Sodium transport; Nephron; Ontogeny of renal transport
资金
- National Institutes of Health [DK-41612, DK078596, T32 DK07257, 1P30DK079328-01, KO8 DK089295]
The adult kidney maintains a constant volume and composition of extracellular fluid despite changes in water and salt intake. The neonate is born with a kidney that has a small fraction of the glomerular filtration rate of the adult and immature tubules that function at a lower capacity than that of the mature animal. Nonetheless, the neonate is also able to maintain a constant extracellular fluid volume and composition. Postnatal renal tubular development was once thought to be due to an increase in the transporter abundance to meet the developmental increase in glomerular filtration rate. However, postnatal renal development of each nephron segment is quite complex. There are isoform changes of several transporters as well as developmental changes in signal transduction that affect the capacity of renal tubules to reabsorb solutes and water. This review will discuss neonatal tubular function with an emphasis on the differences that have been found between the neonate and adult. We will also discuss some of the factors that are responsible for the maturational changes in tubular transport that occur during postnatal renal development.
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