IIVS | Assays 3T3 Neutral Red Uptake
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The 3T3 Neutral Red Uptake Phototoxicity Test Training Video – Chinese

November 21, 2016
This new training video explores a cell-based method for assessing Phototoxicity – or the potential for chemicals to cause damage after being exposed to light. The method is used widely around the world by many industries, including the cosmetics and pharmaceutical sectors. Disclaimer: Please note that the procedures shown in this video were for demonstration purposes only and that all assay procedures, except the UVA/dark exposure, should be performed in a biological safety cabinet using aseptic techniques. Due to video production...

The 3T3 Neutral Red Uptake Phototoxicity Test Training Video – Portuguese

November 21, 2016
This new training video explores a cell-based method for assessing Phototoxicity - or the potential for chemicals to cause damage after being exposed to light. The method is used widely around the world by many industries, including the cosmetics and pharmaceutical sectors. Disclaimer: Please note that the procedures shown in this video were for demonstration purposes only and that all assay procedures, except the UV A/dark exposure, should be performed in a biological safety cabinet using aseptic techniques. Due to video...

Webinar: How GLPs Enhance the Quality of Regulated and Non-Regulated Toxicology

October 18, 2016
This one-hour webinar, led by IIVS Director of Quality and Compliance, introduces some of the concepts of Good Laboratory Practices (GLPs) designed to promote study and data integrity within an in vitro toxicology framework. Applying these concepts within your own laboratory should aid in production of robust, repeatable studies. View Slides...

Tissue Models

August 24, 2016
The 3-D Phototoxicity assay uses 3-D reconstructed human epidermal (RHE) tissue constructs to evaluate the dermal phototoxicity potential of a test material. Toxicity is determined by measuring cytotoxicity [based on the relative conversion of MTT (3-[4,5 - dimethylthiazol-2-yl] - 2,5 - diphenyltetrazolium bromide)] in cultures treated with the test material in the presence or absence of UVA light. An advantage of using 3-D tissues to evaluate phototoxicity potential is that, unlike the 96-well phototoxicity assay, test materials are applied topically, so solids,...

3T3 Neutral Red Uptake (OECD 432)

August 24, 2016
The 3T3 Neutral Red Uptake (NRU) Phototoxicity assay is a 96-well cytotoxicity-based assay that utilizes normal BALB/c 3T3 mouse fibroblasts to measure the concentration-dependent reduction in neutral red uptake by the cells after exposure to a test material either in the presence or absence of UVA light. Duplicate 96-well monolayers of 3T3 fibroblasts are exposed to serial dilutions of a test material. One of the plates is exposed to 5 J/cm2 UVA while the other plate is kept in the...

Next Generation Tobacco Products

August 24, 2016
IIVS has a long-standing history of working with various industries to help establish or utilize in vitro models for the prediction of risk and the assessment of products under development. With the Food and Drug Administration extending its authority to all tobacco products (including e-cigarettes, cigars, and hookah) the tobacco industry is faced with the task of assessing product safety for product development and regulatory submission. Further, the manufacture of tobacco products may entail risk to workers that come in...

Fragrance & Flavors

August 24, 2016
Exposure to fragrance chemicals is most commonly by direct skin contact. Allergic contact dermatitis (ACD) to fragrance ingredients is most often caused by cosmetic products, such as perfumes, deodorants, and aftershave products. Cosmetic fragrance ingredients should be assessed for exposure damage including skin sensitization (ACD), phototoxicity, skin irritation (irritant contact dermatitis), and respiratory irritation and sensitization. At IIVS, we have pre-clinical testing programs to address each of these endpoints to ensure the safety of fragrance 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Pharmaceutical

August 16, 2016
Pharmaceutical companies can use in vitro testing for assessing worker safety. Pharmaceutical intermediates should be evaluated to determine the primary hazards associated with them so that those involved in the manufacturing process can take necessary precautions to avoid hazardous exposures. Pharmaceutical compounds can vary widely in their physical forms, such as powders, liquids, and creams. Many in vitro assays such as those using 3-dimensional tissue constructs, and the Bovine Corneal Opacity and Permeability (BCOP) Assay, are suitable for testing different test...

Agro/Petrochemical

July 28, 2016
Agricultural chemicals consist of multiple product types including fertilizers, pesticides, and herbicides. As a result, these chemicals can cover a wide range in the irritation spectrum, from materials that are classified as mild irritants to those that are designated as corrosive. Classification is needed for registration through organizations such as the US EPA, REACH, or Brazil ANVISA. Multiple in vitro assays have OECD test guidelines that can be used to provide GHS hazard classifications that may meet necessary testing requirements. Ocular...