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Accession IconGSE5243

Effect of Hyp, low phosphate diet and sex on mRNA gene expression in the mouse kidney

Organism Icon Mus musculus
Sample Icon 48 Downloadable Samples
Technology Badge Icon Affymetrix Mouse Expression 430A Array (moe430a), Affymetrix Mouse Expression 430B Array (moe430b)

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The renal adaptation to changing dietary phosphate levels is not well understood. The dominant Hyp mutation of the Phex gene in mice causes X-linked hypophosphatemia with low renal retention of phosphate and blocks physiologic adaptation to low phosphate diets. At P < 0.01, there were 1,711 transcripts significantly affected by genotype, 1,428 by diet and 5,601 by sex. Many renal transporters other than phosphate, as well as many novel transcripts of unknown function, were affected by the Hyp mutation. Some genes for fat metabolism and inflammation were up-regulated in Hyp kidneys. Of the genes affected by genotype and diet, only 378 were affected by both. In summary, the Hyp mutation induced changes in mRNA levels for numerous transcripts exceeding that required to alter phosphate retention. The data suggest broader physiological roles for the Phex gene unrelated to phosphate conservation.
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