Toxicology

Next generation risk assessment to set the stage for the future

© Fraunhofer ITEM, Ralf Mohr

Fraunhofer ITEM stands for toxicology testing and risk assessment of chemicals, active substances and drugs – with a focus on inhalation toxicology. Continued development of the corresponding exposure methods enables very small amounts of test substances to be used with high efficiency in toxicological studies.

Next Generation Risk Assessment

While conventional toxicology testing is still the required regulatory standard, our researchers are contributing to new assessment strategies through their own research projects based on the next generation risk assessment concept, aiming to provide predictive models for assessing the safety of compounds.

Based on the precision-cut lung slices (PCLS) technology that is well established at the institute, more human or humanized ex-vivo organ models, for example of the heart and liver, are in the process of further development. These models can also be used to test biopharmaceuticals and advanced therapy medicinal products (ATMPs). To analyze the results, the researchers combine the traditional endpoints among others with omics technologies, in particular metabolomics and functional genomics, and complex advanced bioinformatics analyses.

Assessment methods based on databases, such as the TTC (threshold of toxicological concern) concept, are being further developed, for example to identify non-genotoxic tumorigenic substances or to allow these methods to be used for the development of medical devices as well.

Toxicology: recent projects and highlights

 

RISK-HUNT3R project

For next generation risk assessment of toxic effects, human-based testing strategies are being developed to reduce, refine and, wherever possible, replace animal testing. 

Standardized, high-throughput targeted metabolomics

 

Draft of an EU register for health-based limit values

The European Commission is planning a central database for health-based limit values (HBLVs) as part of the "One substance, one assessment" concept. This structured database will bring together all relevant HBLVs in one easily accessible place.

Endogenous formation of nitrosamines — are they a risk to humans?

EVape helps to improve safety for e-cigarette consumers

 

The RITA pathology database

Pathologists exchange information at regular meetings and discuss findings under the 21-person discussion microscope at Fraunhofer ITEM.

In-vitro inhalation methods help with safe product development of cosmetic sprays

MUTAMIND: optimized in-vitro test systems for investigating the genotoxicity of N-nitrosamines

In the EU project MUTAMIND, researchers from Fraunhofer ITEM are working on understanding the mutagenic processes of nitrosamines, particularly from pharmaceuticals. The aim is to develop precise in-vitro detection methods for sensitive genotoxicity screening.

Modeling approaches for estimating inhalation exposure from spray applications

 

 

Project ZeroPM: Zero pollution from persistent, mobile substances

Aimed at reducing the risk of our drinking water resources getting contaminated with persistent, mobile substances (PM).

 

REMADYL — processing old PVC as an example of the circular economy model

Fraunhofer is one of 15 multidisciplinary European partners in the EU-funded REMADYL project. The aim is to research the integration of "old" PVC into the circular economy.

 

New-approach methodologies (NAMs)

The EFSA project "Development of roadmaps for action on NAMs in risk assessment" is aimed at prioritizing the incorporation of NAMs into chemical risk assessment.

Preclinical studies for repurposing of Aloxistatin

Fraunhofer ITEM performed inhalation toxicology studies under GLP conditions to prepare for regulatory approval of Aloxistatin. 

 

Project Cell Painting

Scientists from Faunhofer establish a promising tool for next generation risk assessment.

 

Toxicological risk assessment for PFAS

At Fraunhofer ITEM, we are investigating how PFAS impact people’s health. Our main objective here is to separate the PFAS family into subclasses according to their structures and physical and chemical properties, and use this as a basis for determining limits for safe amounts of ingestion for each subclass. 

 

Understanding Cabin Air Quality

The recently launched research project ”Cabin air quality III“ is aimed at assessing long-term effects of contaminants that aircraft passengers and crew members are exposed to on board.

Project ZET-O-MAP

Scientists of Fraunhofer ITEM have developed an analysis pipeline in the CEFIC-LRI project ZET-O-MAP to identify biomarkers for developmental toxicity.

Project archive

Here you can find more projects sorted by our research and development competences. 

Publications

  • Blümlein, K., Nowak, N., Ellinghusen, B., Gerling, S., Badorrek, P., Hansen, T., Hohlfeld, J. M., Paul, R., Schuchardt, S. (2023). Occupational exposure to veterinary antibiotics: Pharmacokinetics of enrofloxacin in humans after dermal, inhalation and oral uptake - A clinical study. Environmental Toxicology and Pharmacology 100: 104139. doi: 10.1016/j.etap.2023.104139 https://www.sciencedirect.com/science/article/abs/pii/S1382668923000819?via%3Dihub
  • Bowden, A., Escher, S., Rose, J., Sadekar, N., Patlewicz, G., O'Keeffe, L., Bury, D., Hewitt, N. J., Giusti, A., Rothe, H. (2023). Workshop report: Challenges faced in developing inhalation thresholds of Toxicological Concern (TTC) - State of the science and next steps. Regulatory Toxicology and Pharmacology 142: 105434. doi: 10.1016/j.yrtph.2023.105434 https://www.sciencedirect.com/science/article/abs/pii/S0273230023001022  - Open Access
  • Dekant, W., Antoniou, E. E., Bosch, A., Bruer, G. G., Colnot, T., Creutzenberg, O., Drexel, C. P., Duffin, R., Krueger, N., Nolde, J., Poland, C., Schaudien, D., Schuster, T. B., Stintz, M., Weber, K., Wessely, B., Zeegers, M. P. (2023). Issues in the inhalation toxicity testing and hazard assessment for low density particulate materials such as synthetic amorphous silica (SAS). Toxicology Letters [Epub ahead of print]. doi: 10.1016/j.toxlet.2023.02.002 https://www.sciencedirect.com/science/article/pii/S0378427423000905?via%3Dihub
  • Drake, C., Wehr, M. M., Zobl, W., Koschmann, J., De Lucca, D., Kühne, B. A., Hansen, T., Knebel, J., Ritter, D., Boei, J., Vrieling, H., Bitsch, A., Escher, S. E. (2023). Substantiate a read-across hypothesis by using transcriptome data—A case study on volatile diketones. Frontiers in Toxicology 5: 14p. doi: 10.3389/ftox.2023.1155645 https://www.frontiersin.org/articles/10.3389/ftox.2023.1155645/full  - Open Access
  • Escher, S. E., Felter, S. P., Hollnagel, H., Boobis, A. R., Yang, C., Rathman, J., Cronin, M. T. D., Batke, M. (2023). Workshop report on the evaluation of the updated and expanded carcinogen database to support derivation of threshold of toxicological concern values for DNA-reactive carcinogens. Altex 40(2): 341-349. doi: 10.14573/altex.2210111 https://www.altex.org/index.php/altex/article/view/2556/2489  - Open Access
  • Lange, F., Koch, W. (2023). Application of Resuspension Data of Respirable Particles for Early Phase Inhalation Following Deposition Contamination in Radiological Emergencies. Health Physics 124(3): 155-165. doi: 10.1097/HP.0000000000001648 https://journals.lww.com/health-physics/Fulltext/2023/03000/Application_of_Resuspension_Data_of_Respirable.1.aspx - Open Access
  • Reamon-Buettner, S. M., Rittinghausen, S., Klauke, A., Hiemisch, A., Ziemann, C. (2024). Malignant peritoneal mesotheliomas of rats induced by multiwalled carbon nanotubes and amosite asbestos: transcriptome and epigenetic profiles Particle and Fibre Toxicology 21(1). doi: 10.1186/s12989-024-00565-x https://link.springer.com/article/10.1186/s12989-024-00565-x - Open Access
  • Rodríguez, J. M. M., Frisk, A.-L., Kreutzer, R., Lemarchand, T., Lezmi, S., Saravanan, C., Stierstorfer, B., Thuilliez, C., Vezzali, E., Wieczorek, G., Yun, S.-W., Schaudien, D. (2023). European Society of Toxicologic Pathology (Pathology 2.0 Molecular Pathology Special Interest Group): Review of In Situ Hybridization Techniques for Drug Research and Development. Toxicologic Pathology [Epub ahead of print]. doi: 10.1177/019262332311782 https://journals.sagepub.com/doi/10.1177/01926233231178282  - Open Access
  • Sanz, F., Pognan, F., Steger-Hartmann, T., Díaz, C., Asakura, S., Amberg, A., Bécourt-Lhote, N., Blomberg, N., Bosc, N., Briggs, K., Bringezu, F., Brulle-Wohlhueter, C., Brunak, S., Bueters, R., Callegaro, G., Capella-Gutierrez, S., Centeno, E., Corvi, J., Cronin, M. T. D., Drew, P., Duchateau-Nguyen, G., Ecker, G. F., Escher, S., Felix, E., Ferreiro, M., Frericks, M., Furlong, L. I., Geiger, R., George, C., Grandits, M., Ivanov-Draganov, D., Kilgour-Christie, J., Kiziloren, T., Kors, J. A., Koyama, N., Kreuchwig, A., Leach, A. R., Mayer, M.-A., Monecke, P., Muster, W., Nakazawa, C. M., Nicholson, G., Parry, R., Pastor, M., Piñero, J., Oberhauser, N., Ramírez-Anguita, J. M., Rodrigo, A., Smajic, A., Schaefer, M., Schieferdecker, S., Soininen, I., Terricabras, E., Trairatphisan, P., Turner, S. C., Valencia, A., van de Water, B., van der Lei, J. L., van Mulligen, E. M., Vock, E., Wilkinson, D. (2023). eTRANSAFE: data science to empower translational safety assessment. Nature Reviews Drug Discovery 22(8): 605-606. doi: 10.1038/d41573-023-00099-5 https://www.nature.com/articles/d41573-023-00099-5
  • Schäferhenrich, A., Blümlein, K., Koch, W., Hahn, S., Schwarz, K., Poppek, U., Hebisch, R., Schlüter, U., Krug, M., Göen, T. (2023). Inhalation and dermal exposure to biocidal products during foam and spray applications. Ann Work Expo Health 67(7): 858-875. doi: 10.1093/annweh/wxad037 https://academic.oup.com/annweh/advance-article/doi/10.1093/annweh/wxad037/7221563 - Open Access
  • Schwarz, K., Blumlein, K., Goen, T., Hahn, S., Hebisch, R., Koch, W., Poppek, U., Schaferhenrich, A., Schluter, U., Krug, M. (2023). Aerosol formation during foam application of non-volatile biocidal substances. Ann Work Expo Health 67(6): 731-743. doi: 10.1093/annweh/wxad031 https://academic.oup.com/annweh/article/67/6/731/7207786 - Open Access
  • Warner, L., Bach-Hagemann, A., Schmidt, T. P., Pinkernell, S., Schubert, G. A., Clusmann, H., Albanna, W., Lindauer, U., Conzen-Dilger, C. (2023). Opening a window to the acutely injured brain: Simultaneous retinal and cerebral vascular monitoring in rats. Frontiers in Molecular Neuroscience 16: 1116841. doi: 10.3389/fnmol.2023.1116841 https://www.frontiersin.org/articles/10.3389/fnmol.2023.1116841/full - Open Access