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. 2000 Dec 15;486(3):213-6.
doi: 10.1016/s0014-5793(00)02308-5.

Kidney produces a novel acylated peptide, ghrelin

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Free article

Kidney produces a novel acylated peptide, ghrelin

K Mori et al. FEBS Lett. .
Free article

Abstract

Ghrelin is a novel growth hormone-releasing peptide with a unique acylated structure. Here we reveal that prepro-ghrelin gene is expressed in the mouse kidney and glomerulus. We also show by reverse-phase high performance liquid chromatography coupled with radioimmunoassay that the mouse kidney does produce ghrelin. The ghrelin immunoreactivity in the mouse kidney is 6.79+/-0.48 fmol/mg (n=5), which is much more abundant than that in the mouse plasma of 0.339+/-0.029 fmol/microl (n=6). Furthermore, prepro-ghrelin gene is expressed in cultured rat mesangial cells, fibroblast-like NRK-49F cells and mouse podocytes, but not in rat epithelial cell-like NRK-52E cells. Ghrelin receptor gene is also expressed in the rat kidney. These findings demonstrate that the kidney, glomerulus and renal cells express prepro-ghrelin gene and ghrelin is produced locally in the kidney, and suggest the endocrine and/or paracrine roles of ghrelin in the kidney.

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