Myeong Kyu Park

TL;DR: The present study focused on the results of systemic toxicity after applying 20 nm colloidal silica NPs on rat skin for 90 days, in accordance with the Organization for Economic Cooperation and Development test guideline 411 with a good laboratory practice system.

TL;DR: Results showed that oral doses for the study with 15-days repeated of ZnOSM20(+) NPs were maternotoxic in the 200 mg/kg/day group, and embryotoxicity in the 400 mg/ kg/ day group.

TL;DR: The results of this study indicate that the NOAEL forSiO2EN20(−) and SiO2 EN100(−), administered by gavage in Sprague-Dawley rats, would most likely be 2,000 mg/kg, and no target organ was identified in rats of either sex.

TL;DR: Results showed that a 15-day repeated oral dose of ZnOSM20(−) was minimally maternotoxic at dose of 200 mg/kg/day and 400 mg/ kg/day.

TL;DR: In this article, the potential effect of local lesions (eye and skin irritation/corrosion) for new TiO2 material powder, GST produced through sludge recycling of the sewage treatment plant in according to the OECD test guideline (TG 404, 405) and imaging evaluation (micro-computed tomography analysis), histopathology examination.