Advanced in vitro exposure systems.

5. Mar. 2019

A lower impact of an acute exposure to electronic cigarette aerosols than to cigarette smoke in human organotypic buccal and small airway cultures was demonstrated using systems toxicology assessment

DOI:10.1007/s11739-019-02055-x
Filippo Zanetti1, Athanasios Kondylis1, Florian Martin1, Patrice Leroy1, Shoaib Majeed1, Sandro Steiner1, Yang Xiang1, Laura Ortega Torres1, Keyur Trivedi1, Emmanuel Guedj1, Celine Merg1, Stefan Frentzel1, Nikolai V. Ivanov1, Utkarsh Doshi2, Kyeonghee Monica Lee2, Willie J. McKinneyJr2, Manuel C. Peitsch1, Julia Hoeng1

1 Philip Morris International R&D, Philip Morris Products S.A.NeuchâtelSwitzerland
2 Altria Client Services LLCRichmondUSA

Human organotypic buccal and small airway cultures were exposed in two independent exposure systems (Vitrocell® 24/48), one for 3R4F reference cigarette smoke and the other for e-cigarette aerosol exposures to summarize the exposure-induced impacts into four main cellular processes: the cell fate, cell proliferation, cell stress, and inflammatory process.

 

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2. Feb. 2019

Toxicological comparison of cigarette smoke and e-cigarette aerosol using a 3D in vitro human respiratory model.

DOI: 10.1016/j.yrtph.2019.01.036

Czekala L1, Simms L2, Stevenson M2, Tschierske N2, Maione AG3, Walele T2.
1 Imperial Brands PLC, 121 Winterstoke Road, Bristol, BS3 2LL, UK. Electronic address: Lukasz.Czekala@uk.imptob.com.
2 Imperial Brands PLC, 121 Winterstoke Road, Bristol, BS3 2LL, UK.
3 MatTek, 200 Homer Ave., Ashland, MA, USA.

In this research article a respiratory epithelial model, EpiAirway, was used to examine the biological effects of nicotine-containing blu PLUS + e-cigarettes, in comparison to conventional cigarette smoke. Tissues were exposed at the air-liquid interface to cigarette smoke or e-cigarette aerosol generated using a VITROCELL VC1 smoking/vaping robot. 

 

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18. Dec. 2018

Development of a quantitative method for assessment of dose in in vitro evaluations using a VITROCELL® VC10® smoke exposure system

https://doi.org/10.1016/j.tiv.2018.12.010

Brian M. Keysera, Robert Leverettea, Kathy Fowlera, Wanda Fieldsa, Victoria Hargreavesb, Lesley Reeveb, Betsy Bombicka
a RAI Services Company1, Scientific & Regulatory Affairs, 401 North Main Street, Winston-Salem, NC 27101, USA
b Covance Laboratories Ltd., North Yorkshire, UK

The aims of this study were to investigate dosimetry during whole smoke exposure in the VITROCELL® VC10® smoking robot using QCMs and to determine whether photometers could be used for concurrent assessment of dose during in vitro whole smoke exposures.

 

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28. Oct. 2018

Big tobacco embraces in vitro toxicology

Manufacturers invest in nonanimal tests to evaluate health risks of e-cigarettes and other next-generation tobacco products

c&en, Volume 96, Issue 43

Britt E. Erickson

The complexity of next-generation tobacco products has increased by a number of factors since FDA was given responsibility to regulate tobacco. Testing e-liquids with animals is not practical, economically and not that accurate. The Vitrocell system generates airborne materials from test products, such as smoke from reference cigarettes and vapor from e-cigarettes, in a manner that simulates how a person would puff. This artcile shows, how IIVS scientists use human donor tissues, obtained from organs, to create cell cultures and in vitro test systems.


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9. Jul. 2018

Delivery efficiencies of constituents of combustion-derived aerosols across the air-liquid interface during in vitro exposures.

DOI: 10.1016/j.tiv.2018.06.024

Steiner S, Diana P, Dossin E, Guy P, Vuillaume G, Kondylis A, Majeed S, Frentzel S, Hoeng J

PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland.

Highlights
•Different smoke constituents are delivered with different efficiencies during in vitro exposures.
•This indicates considerable differences in the composition of the applied and the absorbed smoke.
•The composition of the applied smoke is of limited value for describing the exposure.

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3. May. 2018

Application of a direct aerosol exposure system for the assessment of biological effects of cigarette smoke and novel tobacco product vapor on human bronchial epithelial cultures

https://doi.org/10.1016/j.yrtph.2018.05.004

Shinkichi Ishikawa∗, Kazushi Matsumura, Nobumasa Kitamura, Kanae Ishimori, Yuichiro Takanami, Shigeaki Ito

Scientific Product Assessment Center, R&D Group, Japan Tobacco Inc., 6-2 Umegaoka, Aoba-ku, Yokohama, Kanagawa 227-8512, Japan

The experimental setup for the aerosol exposure consisted of a VC 10 smoking robot, a dilution system, and a Vitrocell 12/3 glass module the exposure of nicotine and TPM in the mainstream aerosols from 3R4F and novel tobacco vapor on MucilAir™ cells. The results are shown in cytotoxicity, IL-8, IL-1ß and gene expression.


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12. Apr. 2018

Development, qualification, validation and application of the Ames test using a VITROCELL® VC10® smoke exposure system

https://doi.org/10.1016/j.toxrep.2018.04.003

Kathy Fowlera, Wanda Fieldsa, Victoria Hargreavesb, Lesley Reeveb, Betsy Bombicka,
a RAI Services Company, Scientific & Regulatory Affairs, 401 North Main Street, Winston-Salem, NC 27101, USA2
b Covance Laboratories Ltd., North Yorkshire, UK

The article shows the successfull qualification of the Vitrocell VC10 smoking robot. The robot was used to  expose bacterial cells to cigarette whole smoke generated from 3R4F reference cigarettes and Eclipse cigarettes. A comparison was made between whole smoke from a tobacco heating and a combustible cigarette.

 

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5. Apr. 2018

A Case Study for the Comparison of In Vitro Data Across Multiple Aerosol Exposure Studies with Extrapolation to Human Dose

DOI: 10.1089/aivt.2017.0042

David Thorne, Emma Bishop, Linsey Haswell, and Marianna Gaca
British American Tobacco Group R&D, Southampton, United Kingdom

This case study has demonstrated that dosimetry techniques using particulate markers can allow in vitro biological data generated on five independent aerosol exposure system studies, under contrasting experimental designs and with different cell types, to be directly compared.

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28. Mar. 2018

Characterization of a Vitrocell VC1 Using Nicotine Dosimetry: An Essential Component Toward Standardized In Vitro Aerosol Exposure of Tobacco and Next Generation Nicotine Delivery Products

DOI: 10.1089/aivt.2018.0001
Holger Behrsing,1 Mario Aragon,1 Jason Adamson,2 Devin Sheehan,1 Marianna Gaca,2 Rodger Curren,1 and Erin Hill1
1Respiratory Toxicology, Institute for In Vitro Sciences, Inc., Gaithersburg, Maryland.
2R&D, British American Tobacco, Southampton, United Kingdom.

The study shows an assessment of VC1 aerosol generation that was conducted by measuring puff-by-puff in vitro nicotine concentration of 3R4F cigarettes (ISO and HCI regimes), e-cigarette (CRM81 puffing profile), and THP (HCIm regime). The aerosols were applied to in vitro or ex vivo cellular and tissue systems that model the respiratory tract, such as reconstructed human airways (RHuA), which are grown at the air–liquid interface (ALI). Additionally a comparison between the Vitrocell VC1 (U.S. Laboratory) and the VC10 (UK Laboratory) Smoking Robot was done.

 

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15. Mar. 2018

Biological effects of cigarette smoke and novel tobacco product vapor on human organotypic bronchial epithelial cultures analyzed using an in vitro aerosol exposure system

SOT 2018, San Antonio, USA

Shinkichi Ishikawa, Kazushi Matsumura, Nobumasa Kitamura, Kanae Ishimori, Yuichiro Takanami, Shigeaki Ito
Scientific Product Assessment Center, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-Ku, Yokohama, Japan

This Poster shows the exposure of nicotine and TPM in the mainstream aerosols from 3R4F and novel tobacco vapor on MucilAir™ cells using the Vitrocell® exposure system. The results are shown in cytotoxicity, IL-8, IL-1ß and gene expression.

 

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