c&en, Volume 96, Issue 43

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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Autoren:
Hillemann, L.; Stintz, M.; Streibel, T.; Zimmermann, R.; Öder, S.; Kasurinen, S.; di Bucchianico, S.; Kanashova, T.; Dittmar, G.; Konzack, D.; Große, S.; Rudolph, A.; Berger, M.; Krebs, T.; Saraji-Bozorgzad, M. R.; Walte, A.

Die Wirkung von Emissionen aus dem Trennen von Carbonbeton werden in einer Kombination aus Trennstaubgenerator, Verdünnungssystem und Expositionssystem an Zellkulturen (A549 und THP-1) gegenüber den entstehenden Stäuben bestimmt (Zytotoxizität).

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https://doi.org/10.3390/pharmaceutics10020056 

Julia Metz ^1,2, Katharina Knoth ¹, Henrik Groß ¹, Claus-Michael Lehr ^1,2,3, Carolin Stäbler ⁴, Udo Bock ⁵, and Marius Hittinger ^1
1Department of Drug Delivery, PharmBioTec GmbH, 66123 Saarbrücken, Germany
²Department of Biopharmaceutics and Pharmaceutical Technology, Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
³Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), 66123 Saarbrücken, Germany
⁴Department of Scientific Affairs Consumer Health, Bayer Vital GmbH, 51368 Leverkusen, Germany
⁵Bock Project Management, 54456 Tawern, Germany

In this study two innovative in vitro techniques were combined: The Vitrocell® Powder Chamber and the human cell based MucilAir™ system. Their combined use allows the investigation of the effect of aerosolized pollen and appropriate drugs on a human mucosal tissue, a similar scenario finding in humans. The release of pro-inflammatory cytokines (IL-6, IL-8, and TNF-α) was quantified as an initial cellular response to pollen contact and to confirm the protective effect of drugs.

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Dr. Dirk Brossell

Federal Institute for Occupational Safety and Health (BAuA), Unit 4.5, 10317 Berlin, Germany

The poster demonstrates the particle deposition via thermal precipitation (particle precipitation by thermophoresis) on cells hosted at the air-liquid interface (ALI).
Advantages of thermophoresis
• Diffusion-like mechanism, gentle particle deposition 
• Independent from particle size (for nanoparticles)
• Homogenous deposition density profile 
• No need to manipulate aerosol properties for deposition (charge, size)

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Following the VITROCELL® User Group Meeting 2017 in Baltimore, international scientists from Canada, Europe, Japan and USA reconvened in March 2018.

The informal event organized into short presentations and posters was followed by open discussions. It was an excellent opportunity to discuss the latest developments of VITROCELL®, to exchange your experience in working with the equipment and to meet other fellow researchers. The meeting took place prior to the international Society of Toxicology 57th Annual Meeting and ToxExpo, March 11 – 15, 2018, in San Antonio, USA - one of the largest international conferences related to toxicology.

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