Record Details

Ochratoxin A Induces Apoptotic and Necrotic Renal Cell Death

Croatian International Relations Review

View Archive Info
 
 
Field Value
 
Title Ochratoxin A Induces Apoptotic and Necrotic Renal Cell Death
Okratoksin A inducira apoptotičko i nekrotičko umiranje bubrežnih stanica
 
Creator Petrik, József
Malić, Ana
Barišić, Karmela
Rumora, Lada
Kõszegi, Tamás
Pepeljnjak, Stjepan
Žanić-Grubišić, Tihana
Čepelak, Ivana
 
Subject ochratoxin A; apoptosis; necrosis; MDCK cells; LLC-PK1 cells; RK 13 cells
 
Description MDCK, LLC-PK1 and RK 13 renal cells were exposed to different OTA concentrations (2.5 to 25 μg OTA/mL of medium) for 24 hours. 2.5 μg OTA/mL significantly reduced the number of living RK 13 cells to 69.4 %, LLC-PK1 cells to 34.5 % and MDCK cells to 27.5 %, as compared to untreated control cells. Effects of OTA on cell morphology were examined by haematoxylin/ eosin or phalloidin-FITC/propidium iodide staining. 12 %, 11 % and 8.2 % apoptotic cells were observed in MDCK, LLC-PK1 and RK 13 cells treated with 2.5 μg OTA/mL, respectively. The structure of actin cytoskeleton showed significant changes in OTA-treated cells. Release of LDH into the culture medium was more abundant in MDCK and LLC-PK1 cells. OTA induced apoptotic and/or necrotic cell death in a cell type- and concentration-dependent manner. The results suggest that MDCK and LLC-PK1 cells are more sensitive to OTA than RK 13 cells.
MDCK, LLC-PK1 i RK 13 bubrežne stanice tretirane su različitim koncentracijama OTA (od 2,5 do 25 μg OTA/mL medija) tijekom 24 sata. Koncentracije toksina od 2,5 μg/mL uzrokuju značajno smanjenje broja živih stanica u odnosu na netretirane kontrolne uzorke: kod RK 13 stanica broj je smanjen na 69,4 %, kod LLC-PK1 na 34,5 %, a kod MDCK na 27,5 %. Ispitan je učinak OTA na morfologiju stanica koje su bojane hematoksilinom/ eozinom odnosno faloidin-FITC/propidijevim jodidom. Kod MDCK, LLC-PK1 i RK 13 stanica tretiranih s 2,5 μg OTA/mL opaženo je 12 %, 11 % odnosno 8,2 % stanica u apoptozi. OTA je uzrokovao značajne promjene u strukturi aktinskoga citoskeleta u tretiranim stanicama. OTA je potaknuo istjecanje LDH iz stanica u okolni medij, što je osobito izraženo u MDCK i LLC-PK1 stanicama. Možemo zaključiti da način umiranja stanica (apoptoza ili nekroza) ovisi o vrsti samih stanica i o primijenjenoj koncentraciji toksina. Naši rezultati ukazuju da su MDCK i LLC-PK1 stanice osjetljivije na djelovanje OTA od RK 13 stanica.
 
Publisher Croatian Chemical Society
 
Date 2005-09-15
 
Type text
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier http://hrcak.srce.hr/56
http://hrcak.srce.hr/file/56
 
Source Croatica Chemica Acta; Vol.78 No.3; ISSN 0011-1643 (Print); ISSN 1334-417X (Online)
 
Language en
 
Rights info:eu-repo/semantics/openAccess
Parts of the contents of Croat. Chem. Acta (e. g. figures or tables) may be reproduced without prior permission, provided reference is made to their source.