Raymond Pieters

Dr. Raymond Pieters serves as an Associate Professor at the Institute for Risk Assessment Sciences (IRAS) within the Department of Population Health Sciences at the Faculty of Veterinary Medicine, Utrecht University. He also holds a position as Lecturer in Innovative Testing in Life Sciences & Chemistry at Utrecht University of Applied Sciences since 2008.

Trained as a medical biologist at the Universities of Groningen and Utrecht from 1981 to 1987, Dr. Pieters completed his PhD in 1992 on the effects of organotin compounds on thymus. This foundational work established his expertise in immunotoxicology that continues to this day.

His research focuses on immunotoxicology with emphasis on mucosal immunology, food allergy (including risk factors and therapy), drug allergy, and drug-induced liver injury (developing predictive models and mechanisms). He actively develops animal-test-free methods, particularly using stem cell organoids for intestinal health research and human exercise studies. Recently, he has launched significant research lines investigating micro- and nanoplastics effects through the Horizon project POLYRISK and ZONMw project MOMENTUM.

Analysis of Dr. Pieters' recent publications reveals a clear progression toward interdisciplinary research that bridges immunology, toxicology, and computational approaches. His work increasingly incorporates advanced techniques like organoid models, natural language processing for toxicology data, and sophisticated risk assessment frameworks for emerging contaminants. This evolution demonstrates his commitment to advancing both fundamental understanding and practical applications in human health risk assessment.

Dr. Pieters participates in several major research initiatives:

• POLYRISK Horizon project on micro- and nanoplastics
• MOMENTUM ZONMw project on micro- and nanoplastics
• VHP4Safety project for next-generation chemical safety assessment
• PARC (Partnership for the Assessment of Risk from Chemicals) project

His laboratory work centers on the Utrecht Advanced In Vitro Models Hub, utilizing sophisticated in vitro models including intestinal organoids to study immune responses to contaminants and allergens. His research has significant implications for regulatory toxicology, food safety, and pharmaceutical development, particularly in advancing reliable alternatives to animal testing.