{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T07:06:02Z","timestamp":1784099162338,"version":"3.55.0"},"reference-count":69,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T00:00:00Z","timestamp":1784073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Immunol."],"abstract":"<jats:p>Autoantibody detection is integral to the laboratory diagnosis of autoimmune diseases (AIDs). Notwithstanding the advent of a multiplicity of quantitative alternative methodologies, indirect immunofluorescence (IIF) remains the gold standard for the initial screening of many autoantibodies. Notably, autoimmune diseases of the digestive system present the widest variety of target autoantibodies and the most intricate fluorescence patterns, rendering them exceptionally contingent upon IIF testing. This article endeavors to furnish an exposition of autoantibodies germane to digestive system AIDs that necessitate IIF detection, meticulously delineating their fluorescent morphological characteristics and clinical significance. Given the complexity in interpreting IIF results for these specific autoantibodies, we will analyze fluorescent localization patterns based on tissue architecture, whilst disambiguating them from common confounding artifacts encountered in clinical practice. This study marks a dedicated attempt to differentiate among several antibody groups with overlapping fluorescence profiles, namely, anti-smooth muscle antibodies (ASMA), anti-elastin antibodies, and anti-reticulin antibodies (ARA); as well as antimitochondrial antibodies (AMA), anti-parietal cell antibodies (PCA), and heterophile antibodies (HA). The ultimate objective is to augment the pattern recognition and interpretive acumen of both laboratory professionals and clinicians, thereby maximizing the benefit of IIF testing in patients with suspected conditions.<\/jats:p>","DOI":"10.3389\/fimmu.2026.1796837","type":"journal-article","created":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T06:11:24Z","timestamp":1784095884000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Staining patterns of autoantibodies in indirect immunofluorescence for autoimmune diseases of the digestive system: morphological characteristics and clinical significance"],"prefix":"10.3389","volume":"17","author":[{"given":"Xiuying","family":"Shi","sequence":"first","affiliation":[{"name":"National Clinical Research Center for Medical Auxiliary Technology(Laboratory Medicine), Department of Laboratory Medicine, The First Hospital of China Medical University","place":["Shenyang, 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