{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T02:03:32Z","timestamp":1778637812317,"version":"3.51.4"},"reference-count":50,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2020,6,29]],"date-time":"2020-06-29T00:00:00Z","timestamp":1593388800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Specialized Youth Foundation Project of Beijing Obstetrics and Gynecology Hospital, Capital Medical University","award":["FCYYQN-201705"],"award-info":[{"award-number":["FCYYQN-201705"]}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Laboratory Analysis"],"published-print":{"date-parts":[[2020,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Macroprolactin mostly composed of an immunoglobulin G (IgG) and a monomeric prolactin (PRL) represents the major circulating PRL form in the patients with macroprolactinemia that are usually asymptomatic and may not require treatment. In this study, we aimed to evaluate the prevalence of antithyroid and antinuclear antibodies, as well as the IgG subclass distributions in the patients suspected for macroprolactinemia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>From January to July in 2018, totally 317 patients with elevated PRL were subjected to the polyethylene glycol (PEG) precipitation assay. The patients with recovery rates of \u226460% were subjected for IgG subclass determination and autoantibody testing including thyroid peroxidase antibody (aTPO), antithyroglobulin antibody (aTG), and antinuclear antibodies (ANA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The higher the post\u2010PEG PRL recovery rates, the less typical hyperprolactinemia symptoms and the higher prevalence of autoantibodies were observed. The IgG1 and IgG3 were the predominant subclasses in the PRL\u2010IgG complexes according to the immunoprecipitation experiments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The patients with post\u2010PEG PRL recovery rates of &lt;40% and 40%\u201060% were likely to represent two distinct populations of different clinical presentations. The prevalence of autoantibodies and IgG subclasses distribution suggested their pathogenic significance in the development of macroprolactinemia.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jcla.23456","type":"journal-article","created":{"date-parts":[[2020,6,29]],"date-time":"2020-06-29T10:56:39Z","timestamp":1593428199000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Evaluation of autoantibodies and immunoglobulin G subclasses in women with suspected macroprolactinemia"],"prefix":"10.1002","volume":"34","author":[{"given":"Chao","family":"Yu","sequence":"first","affiliation":[{"name":"Department of Laboratory Medicine Beijing Obstetrics and Gynecology Hospital Capital Medical University Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fei","family":"Fan","sequence":"additional","affiliation":[{"name":"Department of Laboratory Medicine Beijing Obstetrics and Gynecology Hospital Capital 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