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  • Title: Refinement of the Slug Mucosal Irritation test as an alternative screening test for eye irritation.
    Author: Adriaens E, Dhondt MM, Remon JP.
    Journal: Toxicol In Vitro; 2005 Feb; 19(1):79-89. PubMed ID: 15582359.
    Abstract:
    The objective of this study was to limit the test procedure time of the Slug Mucosal Irritation test to one day and to determine whether it is a relevant and reliable method to predict the eye irritation potential of chemicals. The irritation potential of several eye reference chemicals can be estimated by the amount of mucus produced when tested at a 1% concentration (60 min). Since some in vivo irritating chemicals did not influence this endpoint the effect of increasing concentrations on membrane damage was investigated. This study revealed that when tested at a 3.5% concentration (60 min) the underestimated chemicals induced an increased protein and/or enzyme release. A two-step classification prediction model was developed that classified the chemicals first by the amount of mucus produced (1%, 60 min). Chemicals that did not affect this endpoint were classified based on the membrane damage induced by a second treatment (3.5%, 60 min). The results were compared with the corresponding EU classification (NI, R36 and R41) and 71% of the chemicals were correctly classified with a specificity and sensitivity of 75% and 94%, respectively. Repeated testing of the chemicals revealed a good intra-laboratory reproducibility. The test seems to be a promising method for screening the eye irritating potential of chemicals.
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