{
  "id": 18034689,
  "title": "Sodium arsenite requires redox sensitization to cause developmental dopaminergic neurotoxicity in Caenorhabditis elegans",
  "url": "https://urgent.news/2026/11/03/sodium-arsenite-requires-redox-sensitization-to-cause-developmental",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-03T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.30.763158v1?rss=1"
  },
  "original_language": "en",
  "account": "Sodium arsenite, a chemical pollutant, necessitates redox sensitization in order to induce developmental damage to dopaminergic neurons in the Caenorhabditis elegans worm. This finding emerges from research exposing the worms to sodium arsenite and fluoroacetic acid throughout their entire life cycle. The researchers observed impacts on growth and reproduction, but did not detect any morphological or functional impairments in various neuron types. Sodium arsenite was found to lower ATP levels in dopaminergic neurons; however, it did not lead to marked alterations in the redox state of mitochondria. The neurotoxic effects only surfaced when the worms' mitochondrial quality control, redox stress response, or both were weakened by the simultaneous exposure to rotenone, antimycin A, buthionine sulfoximine, or 6-hydroxydopamine. These weakened conditions also resulted in behavioral issues linked to dopamine levels. This study suggests that the inhibition of the Krebs cycle alone does not generally lead to developmental neurotoxicity.",
  "summary": "Environmental pollutants can disrupt mitochondrial function through many pathways and mitochondrial dysfunction is often linked to neurotoxicity, particularly of dopaminergic neurons. However, there are many mechanisms of mitochondrial toxicity. Remarkably, despite the centrality of the Krebs cycle to mitochondrial bioenergetics, there is very limited evidence regarding whether pollutants that…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}