Author/Editor		Milutinović Živin, Aleksandra; Zorc-Pleskovič, Ruda; Živin, Marko; Vovk, Andrej; Serša, Igor; Šuput, Dušan
Title		Magnetic resonance imaging for rapid screening for the nephrotoxic and hepatotoxic effects of microcystins
Type		članek
Vol. and No.		Letnik 11, št. 8
Publication year		2013
Volume		str. 2785-2798
ISSN		1660-3397 - Marine drugs
Language		eng
Abstract		In vivo visualization of kidney and liver damage by Magnetic Resonance Imaging (MRI) may offer an advantage when there is a need for a simple, non-invasive and rapid method for screening of the effects of potential nephrotoxic and hepatotoxic substances in chronic experiments. Here, we used MRI for monitoring chronic intoxication with microcystins (MCs) in rat. Male adult Wistar rats were treated every other day for eight months, either with MC-LR (10 g/kg i.p.) or MC-YR (10 g/kg i.p.). Control groups were treated with vehicle solutions. T1-weighted MR-images were acquired before and at the end of the eight months experimental period. Kidney injury induced by the MCs presented with the increased intensity of T1-weighted MR-signal of the kidneys and liver as compared to these organs from the control animals treated for eight months, either with the vehicle solution or with saline. The intensification of the T1-weighted MR-signal correlated with the increased volume density of heavily injured tubuli (R2 = 0.77), with heavily damaged glomeruli (R2 = 0.84) and with volume density of connective tissue (R2 = 0.72). The changes in the MR signal intensity probably reflect the presence of an abundant proteinaceous material within the dilated nephrons and proliferation of the connective tissue. T1-weighted MRI-is a valuable method for the in vivo screening of kidney and liver damage in rat models of intoxication with hepatotoxic and nephrotoxic agents, such as microcystins.
Keywords		microcystin chronic toxicity magnetic resonance imaging mikrocistin kronična toksičnost slikanje z magnetno resonanco