Although manure is an important source of minerals and organic compounds it represents a certain risk of spreading the veterinary drugs in the farmland and their permeation to human food. We tested the uptake of the anthelmintic drug fenbendazole (FBZ) by soybean, a common crop plant, from the soil and its biotransformation and accumulation in different soybean organs, including beans. Soybeans were cultivated in vitro or grown in a greenhouse in pots. FBZ was extensively metabolized in roots of in vitro seedlings, where sixteen metabolites were identified, and less in leaves, where only two metabolites were found. The soybeans in greenhouse absorbed FBZ by roots and translocated it to the leaves, pods, and beans. In roots, leaves, and pods two metabolites were identified. In beans, FBZ and one metabolite was found. FBZ exposure did not affect the plant fitness or yield, but reduced activities of some antioxidant enzymes and isoflavonoids content in the beans. In conclusion, manure or biosolids containing FBZ and its metabolites represent a significant risk of these pharmaceuticals entering food consumed by humans or animal feed. In addition, the presence of these drugs in plants can affect plant metabolism, including the production of isoflavonoids.

• Klíčová slova
• anthelmintics, antioxidant enzymes, benzimidazoles, biotransformation, isoflavonoids, pharmaceuticals,
• MeSH
• biologický transport MeSH
• biotransformace MeSH
• fenbendazol metabolismus   farmakokinetika   MeSH
• Glycine max metabolismus   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• fenbendazol MeSH

In recent years interest has grown in the occurrence and the effects of pharmaceuticals in the environment. The aim of this work is to evaluate the risk of fertilizing crops with manure from livestock treated with anthelmintics. The present study was designed to follow the fate of the commonly used anthelmintic drug, ivermectin (IVM) and its metabolites in soybeans (Glycine max (L.) Merr.), a plant that is grown and consumed world-wide for its high content of nutritional and health-beneficial substances. In vitro plantlets and soybean plants, cultivated in a greenhouse, were used for this purpose. Our results showed the uptake of IVM and its translocation to the leaves, but not in the pods and the beans. Four IVM metabolites were detected in the roots, and one in the leaves. IVM exposure decreased slightly the number and weight of the beans and induced changes in the activities of antioxidant enzymes. In addition, the presence of IVM affected the proportion of individual isoflavones and reduced the content of isoflavones aglycones, which might decrease the therapeutic value of soybeans. Fertilization of soybean fields with manure from IVM-treated animals appears to be safe for humans, due to the absence of IVM in beans, the food part of plants. On the other hand, it could negatively affect soybean plants and herbivorous invertebrates.

• Klíčová slova
• anthelmintics, antioxidant enzymes, biotransformation, drug metabolites, isoflavonoids,
• MeSH
• antioxidancia metabolismus   MeSH
• antiparazitární látky farmakologie   MeSH
• biologický transport MeSH
• Glycine max účinky léků   růst a vývoj   metabolismus   MeSH
• isoflavony metabolismus   MeSH
• ivermektin farmakologie   MeSH
• kořeny rostlin účinky léků   růst a vývoj   metabolismus   MeSH
• listy rostlin účinky léků   růst a vývoj   metabolismus   MeSH
• semena rostlinná účinky léků   růst a vývoj   metabolismus   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antioxidancia MeSH
• antiparazitární látky MeSH
• isoflavony MeSH
• ivermektin MeSH