Home FOR AUTHORS General Physiology and Biophysics 2008 General Physiology and Biophysics Vol.27, p.187-193, 2008

Journal info


Founded: 1982
ISSN 1338-4325 (online)
ISSN 0231-5882 (print)
Published in English,
6 times per year

Aims and Scope
Editorial Info
Submission Guidelines

Select Journal







Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

General Physiology and Biophysics Vol.27, p.187-193, 2008

Title: Uranyl acetate modulates gene expression and protein levels of the type 2, but not type 1 inositol 1,4,5-trisphosphate receptors in mouse kidney
Author: K. Ondrias, M. Sirova, L. Kubovcakova, O. Krizanova

Abstract: Nephrotoxic effect of uranium is already well documented. Nevertheless, little is known about the effect of uranium on calcium homeostasis and calcium transport systems. Calcium released from endoplasmic reticulum through special calcium release channels – inositol 1,4,5-trisphosphate receptors (IP3Rs) and ryanodine receptors (RyRs) – serves as a main source of cytosolic calcium signaling in the majority of cell types. To contribute to understanding mechanism of toxicity of the uranyl acetate (UA), we focused on modulation of the gene expression, protein levels and activity of IP3 receptor’s intracellular calcium channels by UA in mouse kidney. We have found that UA did not affect mRNA and protein levels of the type 1 IP3Rs, but increased mRNA and also protein levels of the type 2 IP3 receptors in kidney. Nevertheless, IP3-induced calcium release was decreased by addition of UA. We assume that decreased activity of IP3 receptors due to the acute exposure to UA results in feedback, which triggers activation of IP3R2 expression. Thus, inhibition of calcium release and increased levels of the type 2 IP3 receptors might participate, at least partially, in UA-induced nephrotoxicity.

Keywords: Kidney — Uranyl acetate — Inositol 1,4,5-trisphosphate receptors
Year: 2008, Volume: 27, Issue: Page From: 187, Page To: 193



download file



© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.