Integrated strategy for the assessment of kidney toxicity: the case of aristolochic acids

PhD defence

Integrated strategy for the assessment of kidney toxicity: the case of aristolochic acids

PhD candidate RB (Rozaini) Abdullah MSc
Promotor prof.dr.ir. IMCM (Ivonne) Rietjens
Co-promotor dr.ir. J (Jochem) Louisse
dr. S (Sebas) Wesseling
Co-promotor dr ir A Punt
Organisation Wageningen University & Research, Sub-department of Toxicology
Date

Fri 24 March 2017 13:30 to 15:00

Venue Auditorium, building number 362
Generaal Foulkesweg 1
362
6703 BG Wageningen
0317-483592

Summary

Aristolochic acids (AAs) are natural food-borne nephrotoxic, genotoxic and carcinogenic chemicals. This study aimed to demonstrate the potential of an integrated testing strategy using in vitro assays with physiologically based kinetic (PBK) modeling based-reverse dosimetry to predict in vivo toxicity of AAs without animal testing. The results obtained show that this approach provides a useful research tool for studies on kidney toxicity and genotoxicity of AAs. Furthermore, a risk assessment of plant food supplements (PFS) and herbal products containing AAs purchased via online markets was performed and revealed that, in spite of the ban on AA-containing products since 2001, consumers can still be exposed to AAs, which raises concern, especially for people who frequently use these products. Altogether, this study presents further support for the use of combined in vitro-PBK modeling-based alternative tools for risk assessment and revealed the continued risks posed by AAs present in PFS and herbal products.