{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T21:07:13Z","timestamp":1791061633355,"version":"4.1.0"},"reference-count":34,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2007,4,25]],"date-time":"2007-04-25T00:00:00Z","timestamp":1177459200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cytometry Pt A"],"published-print":{"date-parts":[[2007,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background:<\/jats:title><jats:p>Lipid membrane microdomains are involved in the regulation of biological functions of monocyte membrane proteins. These microdomains show a relative resistance to non\u2010ionic detergents providing an easy analytical tool to study them.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods:<\/jats:title><jats:p>Here, we applied a rapid detergent\u2010based flow cytometric assay to investigate microdomain association of proteins on monocytes from whole blood samples. The association of known surface antigens with detergent resistant fraction of membranes (DRMs) was compared using monocytes from healthy blood donors, patients with genetic disorders affecting cellular cholesterol traffic and patients with systemic inflammatory response.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results:<\/jats:title><jats:p>All investigated surface antigens of Niemann\u2010Pick type C (NPC)\u2010mutant monocytes with impaired cholesterol influx and defective late endosome cholesterol trafficking, presented a strongly increased DRM\u2010association. Though, membrane antigens of ATP binding cassette transporter A1 (ABCA1)\u2010mutant monocytes with impaired cholesterol efflux did not show alterations in DRM\u2010association. Differential CD14\u2010dependent receptor clustering within microdomains was also investigated in response to in vivo lipopolysaccharide (LPS) and\/or atherogenic lipoprotein activation. Increased DRM\u2010association of the GPI\u2010anchored proteins CD14, CD55, the Fc\u03b3 receptor CD64, the scavenger receptors CD36, CD91 and CD163, the integrin CD11a, and complement receptor 3 complex CD11b\/CD18 were observed from patients with systemic inflammatory response syndrome (SIRS)\/sepsis or coronary artery disease (CAD)\/myocardial infarction. Interestingly, the tetraspanin CD81 presented increased DRM\u2010association in SIRS\/sepsis patients, but not in CAD patients. Moreover, the pentaspanin CD47 and the Fc\u03b3 RIII CD16 showed an increased DRM partition in CAD patients but disassembled from DRMs in SIRS\/sepsis patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions:<\/jats:title><jats:p>Our results demonstrate that flow cytometric analysis of short time in situ detergent extraction provides a powerful tool for rapid screening of blood monocyte DRMs to preselect patients with potential raft\/microdomain abnormalities for more detailed analysis. \u00a9 2007 International Society for Analytical Cytology<\/jats:p><\/jats:sec>","DOI":"10.1002\/cyto.a.20403","type":"journal-article","created":{"date-parts":[[2007,4,25]],"date-time":"2007-04-25T21:46:22Z","timestamp":1177537582000},"page":"486-494","source":"Crossref","is-referenced-by-count":30,"title":["Monocyte cholesterol homeostasis correlates with the presence of detergent resistant membrane microdomains"],"prefix":"10.1002","volume":"71A","author":[{"given":"Zsuzsanna","family":"Wolf","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Evelyn","family":"Ors\u00f3","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tobias","family":"Werner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans. 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