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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Aberrant 11beta-hydroxysteroid dehydrogenase-1 activity in the cpk mouse: implications for regulation by the Ke 6 gene.

Glucocorticoids have been used to create experimental polycystic kidney disease in rodents and to induce cysts in embryonic kidneys cultures. In addition, the plasma corticosterone levels are higher in a heritable murine model of polycystic kidney disease, cpk mice, in the first postnatal week. Previously, we had shown that the 11beta-hydroxysteroid dehydrogenase-1 (11betaHSD-1) gene is down-regulated in the cpk mice in a coordinated pattern with the Ke 6 gene. In this study, we measured the level of 11betaHSD-1 activity in kidney and liver tissues of cpk homozygote mice and found a reduction in its activity only in the kidney, not in the liver. The activity of the 11betaHSD-1 enzyme appears to be tightly correlated to the level of Ke 6 protein in these tissues. We discuss the possibility that the activity of the 11betaHSD-1 enzyme may be regulated by the Ke 6 enzyme. Ke 6 gene expression has been located to the outer stripe region of rodent kidneys, which is the same region of expression as that for the 11betaHSD-1 gene. These results suggest that down-regulation of the Ke 6 gene may lead to elevated corticosterone levels, mediated through an inhibition of 11betaHSD-1 activity.[1]

References

  1. Aberrant 11beta-hydroxysteroid dehydrogenase-1 activity in the cpk mouse: implications for regulation by the Ke 6 gene. Aziz, N., Brown, D., Lee, W.S., Naray-Fejes-Toth, A. Endocrinology (1996) [Pubmed]
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