Non Animal Testing, Alternative Test Methods, In Vitro Toxicology, IIVS | 2018 March
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March 2018

Evaluation of Phototoxicity of Ocular Medical and Combination Devices

March 28, 2018
To address ocular device induced phototoxicity, an in vitro 3T3 Neutral Red Uptake Phototoxicity test (OECD 432) for chemicals has been modified. Soft contact lenses formulated with three different photo-absorbing compounds and chemical solutions of these compounds were evaluated....

The Assessment of Phototoxicity Using the 3T3 Neutral Red Uptake (NRU) Phototoxicity Assay and a Modified Photo-Direct Peptide Reactivity Assay (DPRA)

March 28, 2018
Alternative methods, including the validated 3T3 Neutral Red Uptake (NRU) Phototoxicity assay (OECD TG 432) may be used as a pre-clinical test to address phototoxicity. Currently, there are no validated alternative test methods to identify photoallergens; however, there are several validated alternative test methods to address skin sensitization, including the Direct Peptide Reactivity Assay (DPRA) (OECD 442C). To address photoallergy, we utilized the 3T3 Phototoxicity assay in combination with a modified photo-DPRA assay to determine if these assays were able...

Human In Vitro Models for Respiratory Toxicology: Evaluation of Goblet Cell Hyperplasia, Mucus Production, and Ciliary Beating Assays

March 28, 2018
Robust non-animal models and assays for pulmonary toxicology are required to make competent product development and risk assessments for new materials requiring toxicity testing. Three in vitro assays (goblet cell hyperplasia [GCH], ciliary beat frequency [CBF], and MUC5AC quantitation) were evaluated for performance and reproducibility. To assess these assays, 6 laboratories contributed data using a common protocol utilizing IL-13 as an inducer of adverse mucociliary-relevant tissue changes. MatTek EpiAirway™ and Epithelix MucilAir™ 3D tissue models were used to evaluate endpoints...

Use of Ex Vivo Precision-Cut Lung Slices as a Screening Tool for Potential Respiratory Toxicity of E-Liquids

March 28, 2018
E-vapor product liquids contain a variety of ingredient combinations that should be assessed for human risk. One human lung-relevant testing platform with reasonable throughput, is human precision-cut lung slices (HuPCLS). HuPCLS are arguably the most complex non-animal model of the lung, retaining native architecture and immune-competent cells over multi-week culture periods. HuPCLS were exposed to three concentrations (0.1%, 0.5%, and 1.2%) of propylene glycol (PG; an E-vapor product constituent) continuously for 16-days. Exposure-effects were evaluated biochemically (WST-8 assay) and histologically (viability...

Oral Irritation Assessment of Electronic Liquids Using an In Vitro Oral Testing Model

March 28, 2018
While data are still being collected and analyzed, there were at least 1,300 accidental electronic liquid (e-liquid) exposures reported as of 2013. Deaths have occurred as a result of ingestion of e-liquid with the effects being attributed primarily to nicotine. The Food and Drug Administration (FDA) sought to regulate e-liquid through the Tobacco Control Act passed in 2009. In 2014, the FDA issued its “Deeming” proposals for public comments, which covered e-liquid manufacturing; the Final Rule giving the FDA authority to...

Nicotine Characterization of an In Vitro Inhalation Exposure System Using Conventional and Next-Generation Tobacco Products: A US/UK Inter-Laboratory Comparison

March 28, 2018
The US-FDA has regulatory authority over tobacco products, including conventional cigarettes and next generation products (NGPs) such as e-cigarettes and tobacco heating products (THPs). There is a desire by the industry, regulator and animal protection organizations to incorporate non-animal test methods for tobacco product and NGP assessment. When assessing respiratory effects in vitro, reliable exposure systems that deliver aerosols to cellular/tissue cultures at the air-liquid interface are needed....

View our Posters from SOT 2018

March 28, 2018
Thank you to all who visited our booth at the 2018 SOT meeting.  Our scientists presented several posters at the meeting. If you did not have an opportunity to view our posters, or would like to view them again, we now have them available here to view online. ...

New Studies Demonstrate Risk Reduction Potential of Heat-Not-Burn Tobacco Products and e-Cigarettes

March 22, 2018
New data presented at the Society of Toxicology Annual Meeting (SOT) have demonstrated the potential of two different heat-not-burn tobacco products and e-cigarettes to reduce the risk of smoking-related diseases, in comparison to continued use of conventional cigarettes. One of those studies was by IIVS , in collaboration with PMI, that evaluated the reproducibility of three new in vitro assays. The study found that these non-animal test systems may provide may provide consistent human-relevant data corresponding to key events involved in...

IIVS at Suppliers Day 2018

March 22, 2018
IIVS President, Erin Hill, and Business Development Manager, Brent Gilbert, will be at the upcoming NYSCC Suppliers Day 2018 in New York City on May 15-16. Stop by our booth (#973) to chat with us or contact us to set up a meeting....

IIVS eNews – March 2018

March 11, 2018
Read the latest issue of our e-newsletter for information about our events and posters at the 2018 Society of Toxicology (SOT) Annual Meeting, presentations at upcoming meetings and more.  View issue....