Tuesday, April 29, 2025
Tuesday, April 29, 2025

Biological systems can behave as siblings in several ways, including by borrowing something and never giving it back. That appears to be what the human immune system did with a protein that now helps bind and regulate the subunits that make up antibodies, according to a multi-institute research collaboration. They found that, before the immune system evolutionarily co-opted it, the protein originally belonged to gene family responsible for directing cells to move to the right location at the right time to address specific functional needs.
Read more …Evolutionary origin of mysterious immune system molecule in humans revealed

Researchers have observed rapid and distinct immune system changes in a small study of people who switched to a vegan or a ketogenic (also called keto) diet. Scientists closely monitored various biological responses of people sequentially eating vegan and keto diets for two weeks, in random order. They found that the vegan diet prompted responses linked to innate immunity -- the body's non-specific first line of defense against pathogens -- while the keto diet prompted responses associated with adaptive immunity -- pathogen-specific immunity built through exposures in daily life and vaccination. Metabolic changes and shifts in the participants' microbiomes -- communities of bacteria living in the gut -- were also observed.
Read more …Switching to vegan or ketogenic diet rapidly impacts immune system

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