Endocrinology and Metabolism

Original Articles

Thyroid
Microvascular Ultrasonography Vascularity Index as a Rapid and Simplified Assessment Tool for Differentiating Graves’ Disease from Destructive Thyroiditis and Managing Thyrotoxicosis: Han-Sang Baek, Chaiho Jeong, Jeonghoon Ha, Dong-Jun Lim; Endocrinol Metab. 2025;40(3):394-404. Published online February 25, 2025; DOI: https://doi.org/10.3803/EnM.2024.2206

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Background
Thyrotoxicosis presents significant diagnostic challenges in distinguishing Graves’ disease (GD) from destruction-induced thyrotoxicosis (DT) using ultrasound imaging. We evaluated a new technology, microvascular ultrasonography (MVUS) to effectively differentiate between GD and DT, and observe the MVUS changes during follow-up.
Methods
A total of 264 consecutive patients were prospectively enrolled into two cohorts from August 2022 to March 2024 at one tertiary referral hospital: cohort 1 comprised patients initially presenting with thyrotoxicosis (n=185; 98 with GD and 87 with DT). Cohort 2 included patients either with GD considering antithyroid drug discontinuation or with DT in the follow-up phase after treatment (n=77). Ultrasound imaging was conducted using the MVUS technique, and the vascularity index (MVUS-VI) was automatically calculated as the percentage ratio of color pixels to total grayscale pixels within a specified region of interest.
Results
Diagnostic accuracy highlighted MVUS-VI as the most accurate diagnostic tool, achieving a sensitivity of 79.6%, specificity of 84.3%, with an area under the curve of 0.856 (95% confidence interval, 0.800 to 0.911). Presence of thyroid peroxidase antibody or thyroglobulin antibody affected MVUS-VI’s performance, requiring a higher cut-off value for specificity in this subgroup. Follow-up in cohort 2 (n=77) demonstrated significant normalization in thyroid function and reductions in MVUS-VI from an initial 32.6%±23.4% to 20.8%±13.5% at follow-up (P<0.001).
Conclusion
MVUS-VI provides a rapid, non-invasive diagnostic alternative to traditional methods in differentiating GD from DT, thus aiding in the management of patients with thyrotoxicosis.

Citations

Citations to this article as recorded by

Update on newer ultrasound systems to study the microvasculature
Orlando Catalano, Antonio Pio Masciotra
La radiologia medica.2025;[Epub] CrossRef

Thyroid
TSHR Gene (rs179247) Polymorphism and Susceptibility to Autoimmune Thyroid Disease: A Systematic Review and Meta-Analysis: Hendra Zufry, Timotius Ivan Hariyanto; Endocrinol Metab. 2024;39(4):603-614. Published online August 1, 2024; DOI: https://doi.org/10.3803/EnM.2024.1987

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Abstract PDF Supplementary Material PubReader ePub: Background
Both Graves’ disease (GD) and Hashimoto’s thyroiditis (HT) are classified as autoimmune thyroid diseases (AITDs). It has been hypothesized that changes in the thyroid-stimulating hormone receptor (TSHR) gene may contribute to the development of these conditions. This study aimed to analyze the correlation between the TSHR rs179247 gene polymorphism and susceptibility to AITD.
Methods
We conducted a thorough search of the Google Scholar, Scopus, Medline, and Cochrane Library databases up until March 2, 2024, utilizing a combination of relevant keywords. This review examines data on the association between TSHR rs179247 and susceptibility to AITD. Random-effect models were employed to assess the odds ratio (OR), and the findings are presented along with their respective 95% confidence intervals (CIs).
Results
The meta-analysis included 12 studies. All genetic models of the TSHR rs179247 gene polymorphism were associated with an increased risk of developing GD. Specifically, the associations were observed in the dominant model (OR, 1.65; P<0.00001), recessive model (OR, 1.65; P<0.00001), as well as for the AA genotype (OR, 2.09; P<0.00001), AG genotype (OR, 1.39; P<0.00001), and A allele (OR, 1.44; P<0.00001). Further regression analysis revealed that these associations were consistent regardless of the country of origin, sample size, age, and sex distribution. However, no association was found between TSHR rs179247 and the risk of HT across all genetic models.
Conclusion
This study suggests that the TSHR rs179247 gene polymorphism is associated with an increased risk of GD, but not with HT, and may therefore serve as a potential biomarker.

Thyroid
Usefulness of Real-Time Quantitative Microvascular Ultrasonography for Differentiation of Graves’ Disease from Destructive Thyroiditis in Thyrotoxic Patients: Han-Sang Baek, Ji-Yeon Park, Chai-Ho Jeong, Jeonghoon Ha, Moo Il Kang, Dong-Jun Lim; Endocrinol Metab. 2022;37(2):323-332. Published online April 13, 2022; DOI: https://doi.org/10.3803/EnM.2022.1413

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Abstract PDF Supplementary Material PubReader ePub

Background
Microvascular ultrasonography (MVUS) is a third-generation Doppler technique that was developed to increase sensitivity compared to conventional Doppler. The purpose of this study was to compare MVUS with conventional color Doppler (CD) and power Doppler (PD) imaging to distinguish Graves’ disease (GD) from destructive thyroiditis (DT).
Methods
This prospective study included 101 subjects (46 GDs, 47 DTs, and eight normal controls) from October 2020 to November 2021. All ultrasonography examinations were performed using microvascular flow technology (MV-Flow). The CD, PD, and MVUS images were semi-quantitatively graded according to blood flow patterns. On the MVUS images, vascularity indices (VIs), which were the ratio (%) of color pixels in the total grayscale pixels in a defined region of interest, were obtained automatically. Receiver operating characteristic curve analysis was performed to verify the diagnostic performance of MVUS. The interclass correlation coefficient and Cohen’s kappa analysis were used to analyze the reliability of MVUS (ClinicalTrials.gov:NCT04879173).
Results
The area under the curve (AUC) for CD, PD, MVUS, and MVUS-VI was 0.822, 0.844, 0.808, and 0.852 respectively. The optimal cutoff value of the MVUS-VI was 24.95% for distinguishing GD and DT with 87% sensitivity and 80.9% specificity. We found a significant positive correlation of MVUS-VI with thyrotropin receptor antibody (r=0.554) and with thyroid stimulating immunoglobulin bioassay (r=0.841). MVUS showed high intra- and inter-observer reliability from various statistical method.
Conclusion
In a real time and quantitative manner, MVUS-VI could be helpful to differentiate GD from thyroiditis in thyrotoxic patients, with less inter-observer variability.

Citations

Citations to this article as recorded by

Microvascular Ultrasonography Vascularity Index as a Rapid and Simplified Assessment Tool for Differentiating Graves’ Disease from Destructive Thyroiditis and Managing Thyrotoxicosis
Han-Sang Baek, Chaiho Jeong, Jeonghoon Ha, Dong-Jun Lim
Endocrinology and Metabolism.2025; 40(3): 394. CrossRef
Association of autoimmune thyroid disease with type 1 diabetes mellitus and its ultrasonic diagnosis and management
Jin Wang, Ke Wan, Xin Chang, Rui-Feng Mao
World Journal of Diabetes.2024; 15(3): 348. CrossRef
Deep Learning Analysis With Gray Scale and Doppler Ultrasonography Images to Differentiate Graves’ Disease
Han-Sang Baek, Jinyoung Kim, Chaiho Jeong, Jeongmin Lee, Jeonghoon Ha, Kwanhoon Jo, Min-Hee Kim, Tae Seo Sohn, Ihn Suk Lee, Jong Min Lee, Dong-Jun Lim
The Journal of Clinical Endocrinology & Metabolism.2024; 109(11): 2872. CrossRef
Evaluation of normal and abnormal fetal renal microvascular flow characteristics of three-dimensional MV-flow imaging
Caixin Huang, Lihe Zhang, Yuting Jiang, Qiao Zheng, Ting Lei, Liu Du, Hongning Xie
Early Human Development.2024; 199: 106149. CrossRef
The Early Changes in Thyroid-Stimulating Immunoglobulin Bioassay over Anti-Thyroid Drug Treatment Could Predict Prognosis of Graves’ Disease
Jin Yu, Han-Sang Baek, Chaiho Jeong, Kwanhoon Jo, Jeongmin Lee, Jeonghoon Ha, Min Hee Kim, Jungmin Lee, Dong-Jun Lim
Endocrinology and Metabolism.2023; 38(3): 338. CrossRef
Duplex Hemodynamic Parameters of Both Superior and Inferior Thyroid Arteries in Evaluation of Thyroid Hyperfunction Disorders
Maha Assem Hussein, Alaa Abdel Hamid, Rasha M Abdel Samie, Elshaymaa Hussein, Shereen Sadik Elsawy
International Journal of General Medicine.2022; Volume 15: 7131. CrossRef
Case 5: A 41-Year-Old Woman With Palpitation
Jiwon Yang, Kabsoo Shin, Jeongmin Lee, Jeonghoon Ha, Dong-Jun Lim, Han-Sang Baek
Journal of Korean Medical Science.2022;[Epub] CrossRef
Microvascular assessment of fascio-cutaneous flaps by ultrasound: A large animal study
Guillaume Goudot, Yanis Berkane, Eloi de Clermont-Tonnerre, Claire Guinier, Irina Filz von Reiterdank, Antonia van Kampen, Korkut Uygun, Curtis L. Cetrulo, Basak E. Uygun, Anahita Dua, Alexandre G. Lellouch
Frontiers in Physiology.2022;[Epub] CrossRef

Thyroid
Expression of Thyroid Stimulating Hormone Receptor mRNA in Mouse C2C12 Skeletal Muscle Cells: Jung Hun Ohn, Sun Kyoung Han, Do Joon Park, Kyong Soo Park, Young Joo Park; Endocrinol Metab. 2013;28(2):119-124. Published online June 18, 2013; DOI: https://doi.org/10.3803/EnM.2013.28.2.119

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11 Web of Science
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Abstract PDF PubReader

Background

We analyzed whether thyroid stimulating hormone receptor (TSH-R) is expressed in a skeletal muscle cell line and if TSH has influence on the differentiation of muscle cells or on the determination of muscle fiber types.

Methods

TSH-R gene expression was detected with nested real-time polymerase chain reaction (RT-PCR) in C2C12, a mouse skeletal muscle cell line. The effect of TSH on myotube differentiation was assessed by microscopic examination of myotube formation and through the measurement of expression of muscle differentiation markers, i.e., myogenin and myoD, and muscle type-specific genes, i.e., MyHC1, MyHC2a, and MyHC2b, with quantitative RT-PCR before and after incubation of C2C12 myotube with TSH.

Results

TSH-R was expressed in the mouse skeletal muscle cell line. However, treatment with TSH had little effect on the differentiation of muscle cells, although the expression of the muscle differention marker myogenin was significantly increased after TSH treatment. Treatment of TSH did not affect the expression of muscle type-specific genes.

Conclusion

TSH-R is expressed in a mouse skeletal muscle cell line, but the role of TSH receptor signaling in skeletal muscle needs further investigation.

Citations

Citations to this article as recorded by

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Seong Hee Ahn, Da Hea Seo, Yongin Cho, Mihye Jung, So Hun Kim, Seongbin Hong
Thyroid.2020; 30(12): 1710. CrossRef
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Jeongmin Lee, Kwanhoon Jo, Jeonghoon Ha, Dong-Jun Lim, Jung Min Lee, Sang-Ah Chang, Moo Il Kang, Min-Hee Kim, Flavia Magri
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International Journal of Diabetes in Developing Countries.2019; 39(3): 486. CrossRef
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Yeqing Gu, Ge Meng, Hongmei Wu, Qing Zhang, Li Liu, Xue Bao, Yawen Wang, Shunming Zhang, Shaomei Sun, Xing Wang, Ming Zhou, Qiyu Jia, Kun Song, Kaijun Niu
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Association of Serum TSH With Handgrip Strength in Community-Dwelling Euthyroid Elderly
Beom-Jun Kim, Seung Hun Lee, Carlos M Isales, Mark W Hamrick, Mi Kyung Kwak, Jung-Min Koh
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Changes in Thyroid Hormone Levels Within the Normal and/or Subclinical Hyper- or Hypothyroid Range Do Not Affect Circulating Irisin Levels in Humans
Grigorios Panagiotou, Kalliopi Pazaitou-Panayiotou, Stavroula A. Paschou, Despina Komninou, Nikolaos Kalogeris, Andromachi Vryonidou, Christos S. Mantzoros
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