Duquesne Marilyn
University of Mons, Belgium
Title: Herbal remedies: Natural but not unhazardous. Study cases of Aristolochia intoxication
Biography
Biography: Duquesne Marilyn
Abstract
Aristolochic acid (AA) produced by some plants from the Aristolochia genus, Asarum and Bragantia species, is a common term to define the mixture of structurally related nitrophenantrene carboxylic acid derivatives. AA-I and AA-II are the major components of such mixtures and are structurally similar except for the presence of an0-methoxy group on AA-I. Various Aristolochia species are used in traditional medicines for the treatment of diverse disorders like snakebites, fever, gout, infection, diarrhea, arthritis, rheumatism. Due to severe adverse effects, including urothelial cancers and renal deficiency, encountered in self-medicating patients, Aristolochia-based remedies are nowadays forbidden in Europe and in the United States. On the contrary, those plants are still commonly used as herbal remedies in Iran, India, Bangladesh and many other parts of the world. Rat models of acute and chronic AAI and/or AAII -induced toxicity have been developed and described in the literature. Due to the renal organotropism of AA toxicities, our laboratory was interested in studying the urinary metabonomic profiles of rats exposed to those toxicants. This new "omic" concept allowed to identify which part of the kidney is mostly affected, the toxic mode of action and to discover potential urine biomarkers of the pathology.