Study Shows Helminth Infection May Protect Against Obesity Through Immune Protein RELMa
Researchers found that transient helminth infection in mice prevented weight gain and improved glucose tolerance through activation of an immunoregulatory protein called RELMa. The protection persisted even after the parasite was cleared, and involved changes in adipose tissue composition and gene expression. This discovery could inform new therapeutic approaches to combat obesity by targeting immune mechanisms rather than the parasites themselves.
In a mouse model study, scientists demonstrated that brief helminth infection provided lasting protection against diet-induced obesity by activating the protein RELMa. Mice infected with Nippostrongylus brasiliensis (a parasite that naturally clears within two weeks) showed reduced weight gain and better glucose tolerance compared to uninfected controls when fed a high-fat, high-glucose diet. The protective effect required functional RELMa, as knockout mice lacking this protein showed no benefit. Analysis of adipose tissue revealed that RELMa promoted immune cell changes—including enrichment of eosinophils and M2 macrophages—and activated genes associated with fat burning, mitochondrial function, and heat production. Without RELMa, adipose tissue instead developed pro-inflammatory and fibrotic profiles with lipid accumulation. These findings suggest that helminth-induced immune signaling could be therapeutically harnessed to combat obesity without requiring actual parasite infection.
What's missing
The article does not discuss the practical feasibility of translating these mouse model findings to human therapy, potential safety concerns with manipulating immune responses, or how this approach compares to existing obesity treatments. Additionally, no discussion of whether similar mechanisms might apply across different populations or genetic backgrounds.
How coverage differed
The bioRxiv preprint presents findings from basic research with neutral scientific framing focused on mechanistic discovery. No significant bias detected in this source; the presentation emphasizes experimental methodology and data interpretation typical of peer-reviewed scientific literature.
What different sources said
- bioRxivCenter
Helminth infection induces RELMa-dependent adipose tissue transcriptional reprogramming and protection against diet-induced obesity
Related
NASA Announces Artemis III Astronaut Crew for 2027 Lunar Mission
NASA has revealed the astronaut crew selected for the Artemis III mission, which is scheduled to launch in 2027 aboard the Space Launch System rocket with the Orion spacecraft. Artemis III represents a complex mission as part of NASA's broader effort to return humans to the Moon. The mission is significant as it marks a major milestone in NASA's lunar exploration program and represents decades of planning and development.
MeerKAT Telescope Identifies Three Electron Acceleration Sites in Single Solar Flare
The MeerKAT radio telescope has detected three distinct locations where electrons are accelerated during a single solar flare event. Solar flares are the most energetic explosions in the sun's corona, and understanding where and how particle acceleration occurs has been a major unresolved question in solar physics. This discovery provides new insights into the mechanisms driving these powerful cosmic events and how energized particles move through the sun's magnetic structures.
Study Suggests Two Giant Planets Once Orbited Near Uranus and Neptune Before Vanishing
A new study analyzing over 100 simulations of the early solar system suggests two giant 'super Earths' once orbited in the outer solar system near Uranus and Neptune. These hypothetical planets would have gravitationally influenced the orbits of existing planets and their moons before being ejected into interstellar space. The research addresses unexplained orbital characteristics of the current solar system that don't align with standard formation models.