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Pyrrolizidine alkaloids (PAs), sometimes referred to as necine bases, are a group of naturally occurring alkaloids based on the structure of pyrrolizidine. Their use dates back centuries and is intertwined with the discovery, understanding, and eventual recognition of their toxicity on humans and animals.
Like other pyrrolizidine alkaloids, senecionine is toxic when ingested. The ingested molecule is a protoxin that is metabolized to its active form. [3] In large quantities, ingestion can lead to critical illness, including convulsions and death. Studies in rodents have shown an LD 50 of 65 mg/kg. [4]
The severity of pyrrolizidine alkaloidosis depends on how much of the poisonous plant was consumed in a height, age, and weight to the amount of substance ingested ratio. The only difference in the symptoms will be how prominent they are depending on the above ratio. Symptoms include: [2] [5] [9] [12] Dull dragging ache in the right upper ...
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Pyrrolizidine alkaloid sequestration by insects is a strategy to facilitate defense and mating. Various species of insects have been known to use molecular compounds from plants for their own defense and even as their pheromones or precursors to their pheromones.
What Is Compounded Tirzepatide? This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. If you’re starting a weight loss journey, you might have stumbled upon tirzepatide — the drug ...
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An "incident" of chemical food contamination may be defined as an episodic occurrence of adverse health effects in humans (or animals that might be consumed by humans) following high exposure to particular chemicals, or instances where episodically high concentrations of chemical hazards were detected in the food chain and traced back to a particular event.