Advanced in vitro exposure systems.

12. Jul. 2016

Systems Toxicology Assessment of the Biological Impact of a Candidate Modified Risk Tobacco Product on Human Organotypic Oral Epithelial Cultures

DOI:10.1021/acs.chemrestox.6b00174

Chem. Res. Toxicol.2016, 29, 1252−1269

Filippo  Zanetti, Alain  Sewer, Carole  Mathis, Anita  R.  Iskandar, Radina  Kostadinova, Walter K. Schlage, Patrice Leroy, Shoaib Majeed, Emmanuel Guedj, Keyur Trivedi, Florian Martin, Ashraf  Elamin, Celine  Merg, Nikolai  V.  Ivanov, Stefan  Frentzel, Manuel  C.  Peitsch, and  Julia  Hoeng*,

Philip Morris International Research and Development, Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
Biology Consultant, Max-Baermann-Str. 21, 51429 Bergisch Gladbach, Germany

 
The tobacco heating system (THS) 2.2 and the 3R4F reference cigarette smoke were exposed to human organotypic oral epithelial tissue cultures (EpiOral, MatTek)at the Vitrocell 24/48 exposure system. The results are shown by the evaluation of cytotoxicity and cytochrome P450 activity assays, mRNA and miRNA purification, measurements of secreted proin flammatory markers and histopathological analysis.

 

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7. Jul. 2016

3-D Nasal Cultures: Systems Toxicological Assessment of a Candidate Modified-Risk Tobacco Product

doi: 10.14573/altex.1605041

Anita R. Iskandar, Carole Mathis, Florian Martin, Patrice Leroy, Alain Sewer, Shoaib Majeed, Diana Kuehn, Keyur Trivedi, Davide Grandolfo, Maciej Cabanski, Emmanuel Guedj, Celine Merg, Stefan Frentzel, Nikolai V. Ivanov, Manuel C. Peitsch and Julia Hoeng

Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland

Human nasal epithelium is the first barrier against inhaled toxicants. The air-liquid interface human nasal culture MucilAir™ offers a more physiologically relevant and robust systems for studying the effects of exposure. This cells were exposed to 3R4F cigarettes and THS2.2 tobacco sticks
in the the Vitrocell® 24/48 exposure system. Results have been evaluated by measuring the cytotoxicity, histology processing, immunostaining, cilia beating frequency (CBF), cytochrome P450 (CYP) activity, luminex-based measurement of secreted analytes, RNA/miRNA purification and mRNA microarray.

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30. Apr. 2016

Assessing the mutagenic activities of smoke from different cigarettes in direct exposure experiments using the modified Ames Salmonella assay

Shinkichi Ishikawa, Yuki Kanemaru, Hidenori Nara, Kazuo Erami, Yasufumi Nagata

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

 

This article shows the successful exposition exposure of cigarette smoke on two different Ames bacteria strains by using the Vitrocell exposure system including the VC10 smoking robot. Conventional 1 mg tar commercial cigarettes (CC1), 1R5F reference cigarettes (University of Kentucky,Lexington, KY, USA), and 3R4F reference cigarettes (University of Kentucky) were compared with a prototype heated cigarette (HC).

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31. Oct. 2015

Roflumilast partially reverses smoke-induced mucociliary dysfunction

DOI 10.1186/s12931-015-0294-3

Andreas Schmid, Nathalie Baumlin, Pedro Ivonnet, John S. Dennis, Michael Campos, Stefanie Krick and Matthias Salathe*

* Correspondence: msalathe@med.miami.edu
Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami Miller School of Medicine, 1600 NW 10th Ave, RMSB #7058, Miami, FL 33136, USA

 

Primary normal human bronchial epithelial cells (NHBE) from non-smokers, cultured at the air-liquid interface (ALI), were exposed to cigarette smoke in a Vitrocell VC-10 smoking robot. The results show that roflumilast can rescue smoke-induced mucociliary dysfunction.Therefor the ELIZA Assay and qPCR were used.

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23. Sep. 2015

A comparative assessment of cigarette smoke aerosols using an in vitro air-liquid interface cytotoxicity test.

DOI:10.3109/08958378.2015.1080773

Authors

Thorne D, Dalrymple A, Dillon D, Duke M, Meredith C

British American Tobacco, Group R&D, Southampton, Hampshire, UK.

 

Evaluation of a modified air-liquid interface BALB/c 3T3 cytotoxicity method for the assessment of smoke aerosols in vitro. 

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12. Jul. 2015

Development of an in vitro cytotoxicity model for aerosol exposure using 3D reconstructed human airway tissue; application for assessment of e-cigarette aerosol

DOI:10.1016/j.tiv.2015.05.018

Authors

Louise Neilsona, Courtney Mankusb, David Thornea, George Jacksonb, Jason DeBayb, Clive Mereditha

a British American Tobacco, Group Research and Development, Regents Park Road, Southampton, Hampshire SO15 8TL, United Kingdom
b MatTek Corporation, 200 Homer Avenue, Ashland, MA 01721, United States

 

The presentation of a new highly differentiated 3D airway culture, grown and exposed in the VITROCELL® system, shows an successful compatibility of the tissue and the VITROCELL® system for testing e-cigarettes. The results are shown with the MTT assay for cell viability and measurement of TEER.

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15. Jun. 2015

Presentation of new Smoking Machine VITROCELL VC 10® S-TYPE

Cutting edge technologies make the VITROCELL® smoking machine a perfect tool for evaluation of conventional and e-cigarettes.

This smoking machine features all special requirements for high-class research: compliance with ISO, Health Canada and square puff profile protocols as well as ease of handling, fast cleaning and high speed product change capabilities.

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2. Jun. 2015

VITROCELL User Group Meeting 2015

Presentation of new VITROCELL® products and experience exchange among international scientists from Europe, Japan, Korea and USA.

The focus of the event was to present new routes for dosimetry, to give an update on VITROCELL’s participation in major European research programs related to nanoparticles as well as the presentation of new products for 2015.

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22. May. 2015

Testing particle delivery of e-cigarettes

VITROCELL® Application Note for VC 10® S-TYPE Smoking Machine and Particle Photometers

The new application note shows a successfull monitoring of the particle delivery of different e-cigarettes on the setup of a VITROCELL VC 10® S-TYPE Smoking Machine combined with the VITROCELL® Particle Photometer and Monitor Software.

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22. May. 2015

Testing of conventional and e-cigarettes: using EpiAirway and EpiAlveolar with the VITROCELL® in vitro Exposure System

VITROCELL® VC1 Smoking Machine and 12/6 CF Exposure Module at the Air/Liquid Interface.

New MatTek application note shows a state-of-the-art in vitro set up by VITROCELL® Systems for testing combustion cigarettes as well as electronic cigarettes with the endpoints toxicity, oxidative stress, TEER, beating cilia, gene expression and mucus secretion.

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