{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T15:52:06Z","timestamp":1753890726703,"version":"3.41.2"},"reference-count":49,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,12,20]],"date-time":"2021-12-20T00:00:00Z","timestamp":1639958400000},"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. Endocrinol."],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Hyperthyroidism is related to vascular atherosclerosis. Propylthiouracil (PTU) and methimazole, other than their antithyroid effects, may have different mechanisms in preventing atherogenesis in Graves\u2019 disease.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>This study aimed to investigate the effect of antithyroid drugs on markers of vascular atherosclerosis in Graves\u2019 hyperthyroidism.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This study was a single-blind, randomized clinical trial conducted on 36 patients with Graves\u2019 disease in Cipto Mangunkusumo General Hospital, Jakarta, Indonesia, from June 2019 until July 2020. Graves\u2019 disease was diagnosed from clinical manifestation of hyperthyroidism with diffuse goiter and then confirmed by thyroid stimulation hormone (TSH), free T4 (fT4), and TSH-receptor antibody (TRAb) measurements. Participants were randomly assigned to either a PTU or a methimazole treatment group and followed up for 3 months. Markers of vascular atherosclerosis were represented by adhesion molecules [intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and E-selectin], carotid artery stiffness [pulse wave velocity (PWV)], and thickness [carotid intima media thickness (cIMT)].<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>By the end of the study, 24 participants reached euthyroid condition (13 from the PTU group and 11 from the methimazole group). After 3 months of follow-up, in the PTU group, we noticed an improvement of ICAM-1 [pretreatment: 204.1 (61.3) vs. posttreatment: 141.6 (58.4) ng\/ml; p = 0.001], VCAM-1 [837 (707\u2013977) vs. 510 (402\u2013630) ng\/ml; p &amp;lt; 0.001] and E-selectin [32.1 (24.1\u201342.7) vs. 28.2 (21.6\u201336.8) ng\/ml; p = 0.045] in the PTU group. In the methimazole group, only VCAM-1 improvement [725 (565\u2013904) vs. 472 (367\u2013590); p = 0.001] was observed. Meanwhile, we found no significant changes in PWV or cIMT in either group.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Antithyroid treatment in Graves\u2019 disease leads to improvement in adhesion molecules, with a lesser effect on methimazole, whereas there were no significant changes in PWV or cIMT. PTU may have a better mechanism compared with methimazole in terms of improving adhesion molecules.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fendo.2021.796194","type":"journal-article","created":{"date-parts":[[2021,12,20]],"date-time":"2021-12-20T08:07:33Z","timestamp":1639987653000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":8,"title":["The Differential Effects of Propylthiouracil and Methimazole as Graves\u2019 Disease Treatment on Vascular Atherosclerosis Markers: A Randomized Clinical 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