PMID- 24005192 OWN - NLM STAT- MEDLINE DCOM- 20140624 LR - 20161125 IS - 1938-9116 (Electronic) IS - 1538-5744 (Linking) VI - 47 IP - 8 DP - 2013 Nov TI - Intravascular radiocontrast iodixanol increases permeability of proximal tubule epithelium: a possible mechanism of contrast-induced nephropathy. PG - 632-8 LID - 10.1177/1538574413503560 [doi] AB - PURPOSE: To investigate the effect of Iodixanol on kidney proximal tubular cell line human kidney 2 (HK-2). METHODS: The HK-2 cells were treated with Iodixanol. A Terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay was used to evaluate apoptosis. Cell viability was measured by proliferation assay kit. Cell permeability changes were assessed by transwell assay and intercellular gaps measurement. Expression of claudin-2 was assessed by quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) and Western blot. RESULTS: Iodixanol reduced tubule cell viability (P < .01) but did not cause apoptosis. The intercellular gap formation (P < .01) and transwell (P < .05) assays revealed that cell permeability significantly increased after Iodixanol treatment of monolayer cells. Western blot and qRT-PCR showed significant upregulation of claudin-2 protein (P < .05) and messenger RNA expression (P < .01). CONCLUSIONS: Our in vitro data do not support the hypothesis that direct kidney cell death from Iodixanol is a major mechanism of contrast-induced nephropathy (CIN). However, increased permeability of proximal tubule epithelium caused by Iodixanol may play an important role in CIN. FAU - Yao, Luyu AU - Yao L AD - 1Department of Surgery, Louisiana State University Health Sciences Center, Shreveport, LA, USA. FAU - Kolluru, Gopi K AU - Kolluru GK FAU - Kevil, Christopher G AU - Kevil CG FAU - Zhang, Wayne W AU - Zhang WW LA - eng PT - Journal Article DEP - 20130904 PL - United States TA - Vasc Endovascular Surg JT - Vascular and endovascular surgery JID - 101136421 RN - 0 (CLDN2 protein, human) RN - 0 (Claudins) RN - 0 (Contrast Media) RN - 0 (Triiodobenzoic Acids) RN - HW8W27HTXX (iodixanol) SB - IM MH - Apoptosis/drug effects MH - Cell Line MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Claudins/genetics/metabolism MH - Contrast Media/*toxicity MH - Dose-Response Relationship, Drug MH - Epithelial Cells/*drug effects/metabolism/pathology MH - Humans MH - Intercellular Junctions/*drug effects/metabolism/pathology MH - Kidney Tubules, Proximal/*drug effects/metabolism/pathology MH - Permeability MH - Triiodobenzoic Acids/*toxicity MH - Up-Regulation OTO - NOTNLM OT - contrast-induced nephropathy OT - iodixanol OT - permeability OT - proximal tubule epithelium EDAT- 2013/09/06 06:00 MHDA- 2014/06/25 06:00 CRDT- 2013/09/06 06:00 PHST- 2013/09/06 06:00 [entrez] PHST- 2013/09/06 06:00 [pubmed] PHST- 2014/06/25 06:00 [medline] AID - 1538574413503560 [pii] AID - 10.1177/1538574413503560 [doi] PST - ppublish SO - Vasc Endovascular Surg. 2013 Nov;47(8):632-8. doi: 10.1177/1538574413503560. Epub 2013 Sep 4.