PMID- 27340563 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160624 LR - 20200930 IS - 2090-004X (Print) IS - 2090-0058 (Electronic) IS - 2090-004X (Linking) VI - 2016 DP - 2016 TI - Lecithin-Bound Iodine Prevents Disruption of Tight Junctions of Retinal Pigment Epithelial Cells under Hypoxic Stress. PG - 9292346 LID - 10.1155/2016/9292346 [doi] LID - 9292346 AB - Aim. We investigated whether lecithin-bound iodine (LBI) can protect the integrity of tight junctions of retinal pigment epithelial cells from hypoxia. Method. Cultured human retinal pigment epithelial (ARPE-19) cells were pretreated with LBI. To mimic hypoxic conditions, cells were incubated with CoCl2. We compared the integrity of the tight junctions (TJs) of control to cells with either LBI alone, CoCl2 alone, or LBI + CoCl2. The levels of cytokines in the conditioned media were also determined. Results. Significant decrease in the zonula occludens-1 (ZO-1) intensity in the CoCl2 group compared to the control (5787.7 +/- 4126.4 in CoCl2 group versus 29244.6 +/- 2981.2 in control; average +/- standard deviation). But the decrease was not significant in the LBI + CoCl2 (27189.0 +/- 11231.1). The levels of monocyte chemoattractant protein-1 (MCP-1) and Chemokine (C-C Motif) Ligand 11 (CCL-11) were significantly higher in the CoCl2 than in the control (340.8 +/- 43.3 versus 279.7 +/- 68.3 pg/mL for MCP-1, and 15.2 +/- 12.9 versus 12.5 +/- 6.1 pg/mL for CCL-11. With LBI pretreatment, the levels of both cytokines were decreased to 182.6 +/- 23.8 (MCP-1) and 5.46 +/- 1.9 pg/mL for CCL-11). Blockade of MCP-1 or CCL-11 also shows similar result representing TJ protection from hypoxic stress. Conclusions. LBI results in a protective action from hypoxia. FAU - Sugimoto, Masahiko AU - Sugimoto M AD - Department of Ophthalmology, Mie University, Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan. FAU - Kondo, Mineo AU - Kondo M AD - Department of Ophthalmology, Mie University, Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan. LA - eng PT - Journal Article DEP - 20160531 PL - United States TA - J Ophthalmol JT - Journal of ophthalmology JID - 101524199 PMC - PMC4906216 EDAT- 2016/06/25 06:00 MHDA- 2016/06/25 06:01 PMCR- 2016/05/31 CRDT- 2016/06/25 06:00 PHST- 2016/02/25 00:00 [received] PHST- 2016/05/06 00:00 [revised] PHST- 2016/05/09 00:00 [accepted] PHST- 2016/06/25 06:00 [entrez] PHST- 2016/06/25 06:00 [pubmed] PHST- 2016/06/25 06:01 [medline] PHST- 2016/05/31 00:00 [pmc-release] AID - 10.1155/2016/9292346 [doi] PST - ppublish SO - J Ophthalmol. 2016;2016:9292346. doi: 10.1155/2016/9292346. Epub 2016 May 31.