{"id":26541,"date":"2026-07-09T08:58:57","date_gmt":"2026-07-09T06:58:57","guid":{"rendered":"https:\/\/www.wjst.de\/blog\/?p=26541"},"modified":"2026-07-09T09:49:40","modified_gmt":"2026-07-09T07:49:40","slug":"farm-dust-and-immune-readouts","status":"publish","type":"post","link":"https:\/\/www.wjst.de\/blog\/sciencesurf\/2026\/07\/farm-dust-and-immune-readouts\/","title":{"rendered":"Farm dust and immune readouts"},"content":{"rendered":"<p>Having just commented on a dust <a href=\"https:\/\/pubpeer.com\/publications\/FF71F63CD6A120070E764BE193AFA4#0\">\u00a0paper on PubPeer<\/a> I looked also into other farm dust papers that all\u00a0 include von Mutius as co-author<\/p>\n<ul>\n<li><a href=\"http:\/\/doi.org\/10.1126\/science.aac6623\">Schuijs 2015, Science<\/a>. Endotoxin\/farm dust protects via epithelial A20.<\/li>\n<li><a href=\"http:\/\/doi.org\/10.1038\/s41591-019-0469-4\">Kirjavainen 2019, Nat Med<\/a>. Farm-like indoor microbiota protects; composition, not richness.<\/li>\n<li><a href=\"http:\/\/doi.org\/10.1002\/clt2.12125\">Pali-Sch\u00f6ll 2022, Clin Transl Allergy<\/a>. BLG+zinc drives the effect; endotoxin-independent.<\/li>\n<li><a href=\"http:\/\/doi.org\/10.1016\/j.jaci.2023.05.013\">Marques dos Santos 2023, JACI<\/a>. Bos d 2\/OBP lipocalins; rules out BLG and endotoxin.<\/li>\n<li><a href=\"http:\/\/doi.org\/10.1111\/cea.14535\">Schrumpf 2024, Clin Exp Allergy<\/a>. Farm dust lowers epithelial IL-33 via JAK-STAT1.<\/li>\n<li><a href=\"http:\/\/doi.org\/10.1111\/all.70121\">Korkmaz 2025, Allergy.<\/a> Therapeutic effect via Tregs; raises IL-33.<\/li>\n<li><a href=\"http:\/\/doi.org\/10.1126\/sciadv.ady7317\">Dragunas 2026, Sci Adv<\/a>. Macrophage epigenetic reprogramming (PPAR\u03b3\/HDAC).<\/li>\n<\/ul>\n<p>The biggest clashes<\/p>\n<ul>\n<li>Active agent &#8211; endotoxin (Schuijs) vs microbiome (Kirjavainen) vs\u00a0 BLG+zinc (Pali-Sch\u00f6ll) vs Bos d 2\/OBP lipocalins (Vercelli, who explicitly rules out BLG and endotoxin).<\/li>\n<li>IL-33 &#8211; Schuijs and Schrumpf say dust lowers it and that&#8217;s why it protects; Korkmaz says dust raises it and that&#8217;s why it protects. Opposite direction, opposite valence.<\/li>\n<li>Effector cell &#8211; epithelium (Schuijs\/Schrumpf) vs macrophages (Dragunas) vs Tregs\/DCs (Korkmaz).<\/li>\n<li>Endotoxin&#8217;s role &#8211; central in the 2015 Science paper, explicitly dismissed as non-essential by four of the later papers.<\/li>\n<li>Timing &#8211; everyone treats it as prevention, only except Korkmaz, who shows it works therapeutically after sensitization, rivaling even dexamethasone.<\/li>\n<\/ul>\n<p>The papers do not converge on any stable mechanism, so the safest conclusion is that they may be internally inconsistent rather than cumulatively persuasive. In practice that leaves context-specific readouts from different models, not any coherent causal story.<\/p>\n<p>These are not merely different endpoints; they assign different direction and different cellular locus to the same exposure. The same farm-dust preparation is used to support opposing claims about IL-33 and different dominant effector cells, which is hard to reconcile biologically. The &#8220;different cells\/phases&#8221; defense doesn&#8217;t dissolve the problem, because the papers are still converting one exposure into several incompatible mechanistic narratives just to support a hypothesis that farm dust is allergy-protective.<\/p>\n<p>One caveat worth stating: because all seven papers share a senior author and several share co-authors and even the same dust preparations, this reads less like independent labs failing to replicate and more like one network floating competing hypotheses just to cover every possibility.\u00a0 This isn&#8217;t primarily a non-replication problem &#8211; it&#8217;s a coherence problem.<\/p>\n<ul>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Which raises the real question: why does each new paper launch a fresh mechanism instead of confronting the last one head-on?<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Why do these groups keep talking past each other, publishing parallel mechanisms rather than arguing them out in a single discussion?<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">The deeper worry is cultural: if even closely linked groups won&#8217;t engage each other&#8217;s findings, how would any scientific field ever converge?<\/li>\n<li>Is this the future of science just by press release of impact factor?<\/li>\n<\/ul>\n\n<p>&nbsp;<\/p>\n<div class=\"bottom-note\">\n  <span class=\"mod1\">CC-BY-NC Science Surf , accessed 09.07.2026<\/span>\n <\/div>","protected":false},"excerpt":{"rendered":"<p>Having just commented on a dust \u00a0paper on PubPeer I looked also into other farm dust papers that all\u00a0 include von Mutius as co-author Schuijs 2015, Science. Endotoxin\/farm dust protects via epithelial A20. Kirjavainen 2019, Nat Med. Farm-like indoor microbiota protects; composition, not richness. Pali-Sch\u00f6ll 2022, Clin Transl Allergy. BLG+zinc drives the effect; endotoxin-independent. Marques &hellip; <a href=\"https:\/\/www.wjst.de\/blog\/sciencesurf\/2026\/07\/farm-dust-and-immune-readouts\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Farm dust and immune readouts<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,5129],"tags":[],"class_list":["post-26541","post","type-post","status-publish","format-standard","hentry","category-asthma-allergy","category-ai-supported"],"_links":{"self":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/26541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/comments?post=26541"}],"version-history":[{"count":5,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/26541\/revisions"}],"predecessor-version":[{"id":26546,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/26541\/revisions\/26546"}],"wp:attachment":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/media?parent=26541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/categories?post=26541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/tags?post=26541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}