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Chemical compounds causing severe acute toxicity in heavy liquids used for intraocular surgery. | LitMetric

Chemical compounds causing severe acute toxicity in heavy liquids used for intraocular surgery.

Regul Toxicol Pharmacol

Instituto Universitario de Oftalmobiología Aplicada (IOBA), Eye Institute, Universidad de Valladolid, Valladolid, Spain; Centro en Red de Medicina Regenerativa y Terapia Celular, Junta de Castilla y León, Valladolid, Spain; Red Temática de Investigación Cooperativa en Salud (RETICS), OftaRed, Instituto de Salud Carlos III, Valladolid, Spain; Department of Ophthalmology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.

Published: February 2020

AI Article Synopsis

Article Abstract

Perfluorocarbon liquids (PFCLs) have been considered safe for intraocular manipulation of the retina, but since 2013 many cases of acute eye toxicity cousing blindness have been reported in various countries when using various commercial PFCLs. All these PFCLs were CE marked (Conformité Européenne), which meant they had been subjected to evaluation complying with the International Organization for Standardization (ISO) guidelines. These dramatic events raised questions about the safety of PFCLs and the validity of some cytotoxicity tests performed under ISO guidelines. Samples from toxic batches were analyzed by gas chromatography-mass spectrometry combined with Raman and infrared spectrometry. Perfluorooctanoic acid, dodecafluoro-1-heptanol, ethylbenzene and tributyltin bromide were identified and evaluated by a direct contact cytotoxicity test using ARPE-19 cell line, patented by our group (EP 3467118 A1). Perfluorooctanoic acid at a concentration of >0.06 mM and tributyltin bromide at a concentration of ≥0.016 mM were shown to be toxic, whereas the concentration found in the toxic samples reached 0.48 mM, and 0.111 mM, respectively. These finding emphasized the idea that determination of partially fluorinated compounds are not enough to guarantee the safety of these medical devices.

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Source
http://dx.doi.org/10.1016/j.yrtph.2019.104527DOI Listing

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