Journal
JOURNAL OF PHYSIOLOGY-LONDON
Volume 579, Issue 3, Pages 643-656Publisher
WILEY
DOI: 10.1113/jphysiol.2006.122101
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Funding
- NCRR NIH HHS [C06 RR013556, 1 C06 RR13556] Funding Source: Medline
- NICHD NIH HHS [HD21350, P01 HD021350] Funding Source: Medline
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Developmental programming is defined as the process by which gene-environment interaction in the developing organism leads to permanent changes in phenotype and function. Numerous reports of maternal nutrient restriction during pregnancy demonstrate altered renal development. Typically this alteration manifests as a reduction in the total number of glomeruli in the mature kidney of the offspring, and suggests that predisposition to develop chronic renal disease may include an in utero origin. In a previous study, we defined the transcriptome in the kidney from fetuses of control (CON, fed ad libitum) and nutrient-restricted (NR, fed 70% of CON starting at 0.16 gestation (G)) pregnancies at half-way through gestation (0.5G), and established transcriptome and morphological changes in NR kidneys compared to CON. One goal of the present study was to use transcriptome data from fetal kidneys of CON and NR mothers at 0.5G with histological data to identify the molecular mechanisms that may regulate renal development. A second goal was to identify mechanisms by which NR elicits its affect on fetal baboon kidney. We have used an end-of-pathway gene expression analysis to prioritize and identify key pathways regulating the 0.5G kidney phenotype in response NR. From these data we have determined that the mammalian target of rapamycin (mTOR) signalling pathway is central to this phenotype.
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