[The features of regulatory T-blood cells subpopulation and the level of CD25 expression in patients with Graves' disease in dynamics after radioactive iodine therapy].

Q4 Medicine Problemy endokrinologii Pub Date : 2023-06-30 DOI:10.14341/probl13223
M A Dudina, A A Savchenko, S A Dogadin, A G Borisov, V D Belenyuk
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Abstract

Background: The content of regulatory T cells (Treg) at different stages in formation of effector subpopulations and the level of CD25 expression on the membrane of their various fractions in Graves' disease can determine the long-term autoimmune process persistence and be the target of immunotropic therapy of the disease.

Aim: To study the features of regulatory T-blood cells subpopulation and the level of CD25 expression in patients with Graves' disease in dynamics after radioactive iodine therapy (RIT) to identify the specific Treg subpopulations for potential immunotropic therapy targets of the disease.

Materials and methods: A single-center, prospective, cohort, open, controlled study was conducted with the participation of women with laboratory-confirmed Graves' disease. The features of regulatory T-blood cells subpopulation and the level of expression (MFI) CD25 surface receptor were studied by flow cytometry using direct immunofluorescence using monoclonal antibodies.

Results: The study included 36 women with recurrent Graves' disease, middle age 46.34±14.32 years. In patients with Graves' disease before and during the entire period after RIT a low percentage of naive (CD45R0-CD62L+) and terminally differentiated (CD45R0-CD62L-) Treg was established relative to the control, and on 3 and 6 months after RIT a significant decrease of cells with this phenotype was revealed relative to the values detected in patients before and 1 month after RIT (p<0.001). Against the background of compensated hypothyroidism the most significant changes of expression CD25 receptor in patients with Graves' disease were found on 3 and 6 months after RIT: reduced levels of MFI CD25 on surface of naive and terminally differentiated Treg.

Conclusion: A decrease in the level of naive Treg was found (apparently due to a violation of differentiation processes in thymus) and terminally differentiated Tregs (due to maturation and survival processes), which are supplemented by a reduced expression of the CD25 receptor on the surface of these cells and do not depend on hyperthyroidism compensation, the titer of TSH receptor antibodies, previous conservative therapy with thiamazole and RIT. The obtained new data reveal the role of naive and terminally differentiated Treg subpopulations in immunopathogenesis and help to outline further ways to develop approaches for immunotropic therapy.

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[放射性碘治疗后Graves病患者调节性t血细胞亚群特征及CD25表达水平动态变化]。
背景:Graves病不同阶段效应亚群形成的调节性T细胞(regulatory T cells, Treg)含量及其各组分膜上CD25表达水平可决定自身免疫过程的长期持续性,是Graves病免疫治疗的靶点。目的:研究Graves病患者放射性碘治疗(RIT)后动态调节性t血细胞亚群特征及CD25表达水平,以确定Graves病潜在的免疫治疗靶点特异性Treg亚群。材料和方法:本研究采用单中心、前瞻性、队列、开放、对照研究,纳入实验室确诊的Graves病女性患者。采用单克隆抗体直接免疫荧光流式细胞术研究调节性t血细胞亚群特征及CD25表面受体表达水平(MFI)。结果:本组36例女性复发性Graves病患者,中年46.34±14.32岁。与对照组相比,Graves病患者在RIT前和RIT后的整个时间内,初始(CD45R0-CD62L+)和终末分化(CD45R0-CD62L-) Treg的比例较低,RIT后3个月和6个月,具有该表型的细胞数量较RIT前和RIT后1个月显著减少(p<0.001)。在代偿性甲状腺功能减退的背景下,Graves病患者CD25受体的表达变化最显著的是在RIT后3个月和6个月:初分化和终末分化Treg表面的MFI CD25水平降低。结论:发现初生Treg水平下降(显然是由于胸腺的分化过程被破坏)和终末分化Treg水平下降(由于成熟和生存过程),这些细胞表面CD25受体表达降低,并且不依赖于甲状腺功能亢进代偿,TSH受体抗体滴度,先前的噻马唑和RIT保守治疗。获得的新数据揭示了初始和终末分化Treg亚群在免疫发病机制中的作用,并有助于概述进一步开发免疫增强治疗方法的方法。
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来源期刊
Problemy endokrinologii
Problemy endokrinologii Medicine-Endocrinology, Diabetes and Metabolism
CiteScore
1.40
自引率
0.00%
发文量
59
期刊介绍: Since 1955 the “Problems of Endocrinology” (or “Problemy Endocrinologii”) Journal publishes timely articles, balancing both clinical and experimental research, case reports, reviews and lectures on pressing problems of endocrinology. The Journal is aimed to the most topical issues of endocrinology: to chemical structure, biosynthesis and metabolism of hormones, the mechanism of their action at cellular and molecular level; pathogenesis and to clinic of the endocrine diseases, new methods of their diagnostics and treatment. The Journal: features original national and foreign research articles, reflecting world endocrinology development; issues thematic editions on specific areas; publishes chronicle of major international congress sessions and workshops on endocrinology, as well as state-of-the-art guidelines; is intended for scientists, endocrinologists diabetologists and specialists of allied trade, general practitioners, family physicians and pediatrics.
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