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Area of Science:

  • Environmental Science
  • Toxicology
  • Biochemistry

Background:

  • Arsenic is a toxic element found in tap water and soils, posing risks to humans, plants, and animals.
  • Exposure to arsenic causes various health issues, including cancer and skin diseases.
  • Arsenic trioxide, an FDA-approved drug, demonstrates therapeutic potential for certain cancers.

Purpose of the Study:

  • To review the current understanding of arsenic's biological activity and toxicity mechanisms.
  • To highlight the importance of arsenic speciation for assessing health impacts.
  • To explore arsenic's effects on cellular processes, including genotoxicity, oxidative stress, and epigenomic changes.

Main Methods:

  • Literature review of studies on arsenic toxicity and biological activity.
  • Analysis of research on arsenic's impact on cellular signaling, inflammation, and the immune system.
  • Examination of diagnostic biomarkers for arsenic poisoning.

Main Results:

  • Arsenic exposure alters cellular functions, leading to genotoxicity, oxidative stress, and epigenomic modifications.
  • Arsenic can disrupt inflammatory and immune system mechanisms.
  • Specific biological signs of arsenic poisoning can aid in diagnosis.

Conclusions:

  • Understanding arsenic's dual nature—its toxicity and therapeutic applications—is crucial.
  • Further research into arsenic's biological mechanisms and the development of biomarkers is essential for managing arsenic exposure and its health consequences.
  • Speciation of arsenic is critical for evaluating its health impacts.