Petter Brodin Traces Immune Variation to Environment, Hormones and Early Gut Signals
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In a Global Immunotalks lecture, immunologist Petter Brodin laid out the forces shaping variation in the human immune system. He described a method of fixing whole blood at collection to retain neutrophils and reduce technical variability, and cited twin studies from Stanford and Mark Davis showing that non-heritable environmental factors dominate most immune measures and vaccine responses. Data from a Karolinska birth cohort of more than 500 children linked breast milk oligosaccharides, bifidobacteria and tryptophan metabolites such as indolelactic acid to reduced early gut inflammation. He also presented findings from 23 transgender men given testosterone, in which type I interferon pathways were suppressed and TNF/NF-kappaB-driven inflammation was induced. The lecture stands as delivered; mechanistic follow-up and independent replication of the hormonal findings remain open.
Written by a model from the reports · updated 2 hours ago
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Petter Brodin's Global Immunotalks lecture covered human immune system variation and development. He described fixing whole blood at collection to retain neutrophils and lower technical CV, twin studies from Stanford and Mark Davis showing non-heritable environmental factors dominate most immune measures and vaccine responses, and a Karolinska birth cohort of over 500 children linking breast milk oligosaccharides, bifidobacteria and tryptophan metabolites such as indolelactic acid to reduced early gut inflammation. He also presented data on 23 transgender men given testosterone, in which type I interferon pathways were suppressed and TNF/NF-kappaB inflammation induced.
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