Macrophage-Killing Bacterial Toxin Weakens Gut Defenses
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- Headline: Macrophage-killing bacterial toxin weakens the gut's defenses against ulcerative colitis
- * A specific variant of the bacterium Aeromonas produces a toxin (aerolysin) that increases susceptibility to ulcerative colitis.
Okay, here’s a breakdown of the facts from the provided text, formatted for clarity:
Headline: Macrophage-killing bacterial toxin weakens the gut’s defenses against ulcerative colitis
Key Findings (as reported in the article):
* A specific variant of the bacterium Aeromonas produces a toxin (aerolysin) that increases susceptibility to ulcerative colitis.
* This toxin essentially “disarms” the gut’s defenses against inflammation.
* The toxin works by killing macrophages,which are crucial immune cells in the gut.
Published Research:
* Zhihui Jiang et al, Science (2025). DOI: 10.1126/science.adz4712 – Focuses on the Aeromonas variant and aerolysin’s role in promoting susceptibility to ulcerative colitis.
* Sonia Modilevsky et al,Science (2025). DOI: 10.1126/science.aec7924 - Focuses on how the bacterial toxin disarms gut defenses against inflammation.
Source & Date:
* Source: Science X Network
* Published: November 22, 2025
* Retrieved: November 22, 2025
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