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Pyrrolizidine alkaloids (PAs) are naturally occurring compounds found in various plant genera such as Senecio, Crotalaria, Heliotropium, Echium, Tirchodesma, and Amsinckia. These alkaloids are characterized by their pyrrolizidine scaffold, which is synthesized in plants and can be activated in the liver by mixed function oxidases to form toxic pyrrole derivatives. PAs are known for their pronounced toxicity, particularly hepatotoxicity, and have been identified as potent hepatocarcinogens in laboratory rodents. Despite their toxicity, PAs exhibit a wide range of biological activities, including potential pharmacological properties as glycosidase inhibitors, making them candidates for drug development in treating diseases such as cancer, diabetes, and viral infections. The interest in PAs stems from their complex structure and the challenge of synthesizing them, as well as their significant impact on human health due to their presence in food and phytomedicine.
仅用于科研。不用于诊断过程。未经明确授权不得转售。