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Alidrisi HA, Thamer NK, Radhi MA, Hammadi S, Abdulaziz FS. Triiodothyronine/Free Thyroxine Ratio as a Criterion for the Differentiation Between Graves' Disease and Subacute Thyroiditis. Cureus 2024; 16:e63083. [PMID: 39055454 PMCID: PMC11270154 DOI: 10.7759/cureus.63083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Graves' disease (GD) and subacute thyroiditis (SAT) are important causes of thyrotoxicosis. The differentiation between these diseases is of great value because it will affect the management plan of either of them. The study aimed to assess the triiodothyronine/free thyroxine (T3/fT4) ratio as a criterion for the differentiation of hyperthyroidism due to GD and SAT. METHOD A retrospective study with database retrieval was conducted at Faiha Specialized Diabetes, Endocrine and Metabolism Center (FDEMC), Basrah, southern Iraq. Patients attending the center who presented with thyrotoxicosis due to GD and SAT from January 2010 to January 2024 were included in the analysis that was conducted from October 2023 to February 2024. For comparison between GD and SAT, the baseline thyroid-stimulating hormone (TSH), fT4 and T3 were used to calculate the fT4 ratio (fT4 level (ng/dL)/1.7 ng/dL), T3 ratio (T3 level (ng/dL)/200 ng/dL), and T3/fT4 ratio (T3 level (ng/dL)/fT4 (ng/dL)). RESULTS As compared to SAT, patients with GD had a significantly lower TSH and higher T3, T3 ratio, and T3/fT4 ratio. A T3/fT4 ratio with a cutoff equal to or more than 25 had 95% sensitivity and 18.1% specificity for GD with 94.4% positive predictive value. Raising the cutoff to equal or more than 100 results in the reduction of sensitivity to 32.7% but with 100% specificity and positive predictive value. CONCLUSION The T3/fT4 ratio presents as a valuable diagnostic tool in differentiating GD from SAT, with potential applications in refining the diagnostic approach to hyperthyroidism.
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Affiliation(s)
- Haider A Alidrisi
- Diabetes and Endocrinology, Faiha Specialized Diabetes, Endocrine and Metabolism Center, Basrah, IRQ
- Diabetes and Endocrinology, University of Basrah, College of Medicine, Basrah, IRQ
| | - Nawar K Thamer
- Medicine, University of Basrah, College of Medicine, Basrah, IRQ
- Diabetes and Endocrinology, Faiha Specialized Diabetes, Endocrine and Metabolism Center, Basrah, IRQ
| | - Maher A Radhi
- Diabetes and Endocrinology, Faiha Specialized Diabetes, Endocrine and Metabolism Center, Basrah, IRQ
| | - Saad Hammadi
- Internal Medicine, University of Basrah, College of Medicine, Basrah, IRQ
| | - Farah S Abdulaziz
- Radiology, Al-Mawani Teaching Hospital/University of Basrah, College of Medicine, Basrah, IRQ
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Yamagami A, Iwama S, Kobayashi T, Zhou X, Yasuda Y, Okuji T, Ito M, Izuchi T, Ando M, Onoue T, Miyata T, Sugiyama M, Hagiwara D, Suga H, Banno R, Arima H. Changes in TgAb and TPOAb titers are greater in thyrotoxicosis than isolated hypothyroidism induced by PD-1 blockade. Endocr J 2024; 71:515-526. [PMID: 38599854 DOI: 10.1507/endocrj.ej23-0480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/12/2024] Open
Abstract
Anti-thyroglobulin antibodies (TgAb) and/or anti-thyroid peroxidase antibodies (TPOAb) positivity at baseline is a risk marker for thyroid immune-related adverse events (thyroid-irAEs) in anti-programmed cell death-1 antibody (PD-1-Ab) treatment; however, it is unknown if TgAb and TPOAb titers are associated with clinical characteristics of thyroid-irAEs. Among 586 patients treated with PD-1-Ab at Nagoya University Hospital between 2 November 2015 and 30 September 2021, 57 patients developed thyroid-irAEs (thyrotoxicosis [n = 38]; hypothyroidism without prior thyrotoxicosis {isolated hypothyroidism} [n = 19]) in whom thyroid function, and TgAb and TPOAb titers were determined at baseline and at the onset. The changes in TgAb (median, 54.8 vs. 0.2 IU/mL; p = 0.002) and TPOAb titers (31.6 vs. 0 IU/mL; p = 0.032) from baseline to onset of developing thyroid-irAEs were greater in patients with thyrotoxicosis than patients with isolated hypothyroidism. Higher TgAb and TPOAb titers, and the TgAb titer at baseline were associated with an earlier onset of thyrotoxicosis and higher peak free thyroxine levels, respectively. Twenty-eight patients who developed hypothyroidism after thyrotoxicosis had higher TgAb (54.5 vs. 10.7 IU/mL; p = 0.011) and TPOAb titers at baseline (46.1 vs. 9.0 IU/mL; p < 0.001) and greater changes in TgAb (61.7 vs. 7.8 IU/mL; p = 0.025) and TPOAb titers (52.8 vs. -0.8 IU/mL; p < 0.001) than patients who did not develop hypothyroidism. The TgAb titer at baseline and changes in the TgAb and TPOAb titers were greater in patients with thyrotoxicosis than patients with isolated hypothyroidism, suggesting that the magnitude of the thyroid autoimmune response reflects the clinical types of thyroid-irAEs.
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Affiliation(s)
- Ayana Yamagami
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Shintaro Iwama
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Tomoko Kobayashi
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Xin Zhou
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Yoshinori Yasuda
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Takayuki Okuji
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Masaaki Ito
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Tetsushi Izuchi
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Masahiko Ando
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya 466-8550, Japan
| | - Takeshi Onoue
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Takashi Miyata
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Mariko Sugiyama
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Daisuke Hagiwara
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Hidetaka Suga
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Ryoichi Banno
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
- Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya 464-8601, Japan
| | - Hiroshi Arima
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
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Zhang Y, Wang Y, Liu M, Wei L, Huang J, Dong Z, Guan M, Wu W, Gao J, Huang X, Guo X, Xie P. The value of FT4/TSH ratio in the differential diagnosis of Graves' disease and subacute thyroiditis. Front Endocrinol (Lausanne) 2023; 14:1148174. [PMID: 37396175 PMCID: PMC10310994 DOI: 10.3389/fendo.2023.1148174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 05/24/2023] [Indexed: 07/04/2023] Open
Abstract
Objective To explore the value of the FT4/TSH ratio in the etiological diagnosis of newly diagnosed patients with thyrotoxicosis. Methods The retrospective study was conducted on 287 patients with thyrotoxicosis (122 patients with subacute thyroiditis and 165 patients with Graves' disease) and 415 healthy people on their first visit to our hospital. All patients underwent thyroid function tests including the measurement of T3, T4, FT3, FT4, TSH, T3/TSH, and T4/TSH. The receiver operating characteristic (ROC) curve was employed to evaluate the value of FT4/TSH in the differential diagnosis of Graves' disease and subacute thyroiditis, and compared with other related indicators. Results The area under the curve of FT4/TSH for diagnosing Graves' disease and thyroiditis was 0.846, which was significantly larger than the area under the curve of T3/T4 ratio (P< 0.05) and FT3/FT4 ratio (P< 0.05). When the cut-off value of the FT4/TSH ratio was 5731.286 pmol/mIU, the sensitivity was 71.52%, the specificity was 90.16%, the positive predictive value was 90.77% and the negative predictive value was 70.06%. The diagnostic accuracy was 79.44%. Conclusion FT4/TSH ratio can be used as a new reference index for the differential diagnosis of thyrotoxicosis.
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Affiliation(s)
- Yingjie Zhang
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Yu Wang
- Department of Nuclear Medicine, Zhangjiakou First Hospital, Zhangjiakou, Hebei, China
| | - Miao Liu
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lingge Wei
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jianmin Huang
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ziqian Dong
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Meichao Guan
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Weijie Wu
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jianqing Gao
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaojie Huang
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xin Guo
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Peng Xie
- Department of Nuclear Medicine, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
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SAKIZ D, ÇALAPKULU M, SENCAR ME, UCAN B, ÖZTÜRK ÜNSAL İ, ÖZBEK M, ÇAKAL E. fT3 index/TSH index ratio and free thyroid hormone index in the differential diagnosis of thyrotoxicosis. JOURNAL OF HEALTH SCIENCES AND MEDICINE 2022. [DOI: 10.32322/jhsm.1058324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Comparison of 99mTc Pertechnetate Thyroid Uptake Rates by Gamma Probe and Gamma Camera Methods for Differentiating Graves' Disease and Thyroiditis. Nucl Med Mol Imaging 2022; 56:42-51. [PMID: 35186158 PMCID: PMC8828838 DOI: 10.1007/s13139-021-00734-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/14/2021] [Accepted: 12/21/2021] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Technetium-99 m (99mTc) pertechnetate thyroid uptake rate can be measured with a gamma probe or gamma camera. This study was performed to compare their diagnostic accuracy for evaluating patients with thyrotoxicosis. METHODS We retrospectively reviewed 99mTc pertechnetate thyroid uptake rate records of patients by both gamma probe and camera methods at a tertiary center in Korea from November 2019 to June 2020. We determined the normal reference ranges of thyroid uptake rate by two methods and compared both methods for differentiating Graves' disease and thyroiditis in patients with thyrotoxicosis by receiver operating characteristic curve analysis. RESULTS A total of 371 patients (euthyroid 89, Graves 167, and thyroiditis 115) were included. The normal reference range for thyroid uptake rate in euthyroid patients was 0.3-1.9% and 2.0-4.7% for the camera and probe methods, respectively. For differentiating Graves' disease and thyroiditis, the area under the curve of the camera method (0.988) was significantly greater than that (0.975) of the probe method (p = 0.030). The sensitivity and specificity for the probe method were 92.2% and 91.3%, respectively, with a cut-off value of 3.0%. Those for the camera method were 93.4% and 94.8%, respectively, with a cut-off value of 0.7%. CONCLUSION 99mTc pertechnetate thyroid uptake rate measured by the camera method had higher diagnostic accuracy than the probe method for evaluating patients with thyrotoxicosis. Considering the diagnostic accuracy and patient convenience, the thyroid uptake rate measured by the camera method would be a good substitute for the probe method.
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Wang J, Cao LL, Gao ZY, Zhang H, Liu JX, Wang SS, Pan H, Yan CH. Relationship between thyroid hormone parameters and exposure to a mixture of organochlorine pesticides, mercury and nutrients in the cord blood of newborns. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118362. [PMID: 34648836 DOI: 10.1016/j.envpol.2021.118362] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 10/08/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
The fetus is prenatally exposed to a mixture of organochlorine pesticides (OCPs), mercury (Hg), docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA) and selenium (Se) through maternal seafood consumption in real-life scenario. Prenatal exposure to these contaminants and nutrients has been suggested to affect thyroid hormone (TH) status in newborns, but the potential relationships between them are unclear and the joint effects of the mixture are seldom analyzed. The aim of the study is to investigate the associations of prenatal exposure to a mixture of OCPs, Hg, DHA, EPA and Se with TH parameters in newborns. 228 mother-infant pairs in Shanghai, China were included. We measured 20 OCPs, total Hg, DHA, EPA and Se in cord blood samples as exposure variables. The total thyroxine (TT4), free thyroxine (FT4), total triiodothyronine (TT3), free triiodothyronine (FT3), and thyroid-stimulating hormone (TSH) levels and the FT3/FT4 ratio in cord serum were determined as outcomes. Using linear regression models, generalized additive models and Bayesian kernel machine regression, we found dose-response relationships of the mixture component with outcomes: among the contaminants, p,p'-DDE was the most important positive predictor of TT3, while HCB was predominantly positively associated with FT3 and the FT3/FT4 ratio, indicating different mechanisms underlying these relationships; among the nutrients, EPA was first found to be positively related to the FT3/FT4 ratio. Additionally, we found suggestive evidence of interactions between p,p'-DDE and HCB on both TT3 and FT3, and EPA by HCB interactions for TT3, FT3 and FT3/FT4 ratio. However, the overall effects of the mixture on thyroid hormone parameters were not significant. Our result suggests that prenatal exposure to p,p'-DDE, HCB and EPA as part of a mixture might affect thyroid function of newborns in independent and interactive ways. The potential biological mechanisms merit further investigation.
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Affiliation(s)
- Ju Wang
- School of Nursing and Rehabilitation, Shandong University, Jinan, Shandong, 250012, China
| | - Lu-Lu Cao
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Zhen-Yan Gao
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China; Department of Gynaecology and Obstetrics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Hong Zhang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Jun-Xia Liu
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Su-Su Wang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Hui Pan
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Chong-Huai Yan
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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Wang X, Jiang F, Chen W, Yuan H, Li Y. The Association Between Circulating Trans Fatty Acids and Thyroid Function Measures in U.S. Adults. Front Endocrinol (Lausanne) 2022; 13:928730. [PMID: 35898468 PMCID: PMC9309269 DOI: 10.3389/fendo.2022.928730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND There has been controversial evidence regarding the effect of trans fatty acids (TFAs) on thyroid function in animal studies, and the epidemiological studies are lacking. We aimed to investigate the potential associations between circulating TFAs and thyroid function biomarkers in a U.S. adult population sample. METHODS We performed a cross-sectional survey with 626 adults aged ≥20 years who participated in the National Health and Nutrition Examination Survey (NHANES) 2009-2010. Multivariable linear regression models were constructed to elucidate the relationships between circulating concentrations of TFAs (palmitelaidic acid, vaccenic acid, elaidic acid, linoelaidic acid and the sum of the four TFAs) and a panel of thyroid function measures. RESULTS For 626 adults, positive associations were found between palmitelaidic acid, elaidic acid and total thyroxine (TT4), between palmitelaidic acid and total triiodothyronine (TT3), and between linolelaidic acid and thyroid stimulating hormone (TSH), while linolelaidic acid was negatively associated with free thyroxine (FT4) (all P<0.05). Besides, the four TFAs and the sum TFAs were positively associated with free triiodothyronine (FT3). Vaccenic acid, elaidic acid, linoelaidic acid and the sum TFAs were positively associated with FT3/FT4, while the four TFAs and the sum TFAs were negatively associated with FT4/TT4 (all P<0.05). In stratified analysis, the associations between thyroid function measures and the ratios remained significant in female. For men, linolelaidic acid was negatively associated with FT4 and elaidic acid and the sum TFAs were positively associated with FT3. Furthermore, the associations between TFAs and FT3/FT4 remained significant. CONCLUSION Our findings revealed that TFAs exposure was associated with serum biomarkers of thyroid function. More researches are needed to evaluate the long-term health outcomes of these findings.
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Affiliation(s)
- Xiaoqian Wang
- Department of Clinical Nutrition, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Fengjuan Jiang
- Department of Clinical Nutrition, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Wenqing Chen
- Department of Clinical Nutrition, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Hui Yuan
- Department of Urology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- *Correspondence: Hui Yuan, ; Yuan Li,
| | - Yuan Li
- Department of Clinical Nutrition, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- *Correspondence: Hui Yuan, ; Yuan Li,
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Takedani K, Notsu M, Adachi N, Tanaka S, Yamamoto M, Yamauchi M, Yamauchi N, Maruyama R, Kanasaki K. Thyroid crisis caused by metastatic thyroid cancer: an autopsy case report. BMC Endocr Disord 2021; 21:213. [PMID: 34689780 PMCID: PMC8543858 DOI: 10.1186/s12902-021-00875-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 10/15/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Thyroid crisis is a life-threatening condition in thyrotoxic patients. Although differentiated thyroid cancer is one of the causes of hyperthyroidism, reports on thyroid crisis caused by thyroid cancer are quite limited. Here, we describe a case of thyroid crisis caused by metastatic thyroid cancer. CASE PRESENTATION A 91-year-old woman was admitted to our hospital because of loss of appetite. Two years prior to this hospitalization, she presented with subclinical thyrotoxicosis and was diagnosed with histologically unidentified thyroid cancer with multiple metastases, and she refused aggressive medical interventions. On admission, she exhibited extreme thyrotoxicosis, and the presence of fever, severe tachycardia, impaired consciousness, and heart failure revealed the presence of thyroid crisis. All thyroid autoantibodies were negative. Multidisciplinary conservative treatment was initiated; however, she died on the fifth day after admission. Autopsy revealed the presence of primary anaplastic thyroid carcinoma and multiple metastatic foci arising from follicular thyroid carcinoma. Both primary and metastatic follicular thyroid carcinoma likely induced thyrotoxicosis, which could have been exacerbated by anaplastic thyroid carcinoma. CONCLUSIONS Even though the trigger of thyroid crisis in this patient is not clear, the aggravated progression of her clinical course suggests that careful monitoring of thyroid hormones and appropriate intervention are essential for patients with thyroid cancer.
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Affiliation(s)
- Kai Takedani
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
| | - Masakazu Notsu
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan.
| | - Naoko Adachi
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
| | - Sayuri Tanaka
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
| | - Masahiro Yamamoto
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
| | - Mika Yamauchi
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
| | - Naotake Yamauchi
- Department of Pathology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
- Department of Pathology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan
| | - Riruke Maruyama
- Department of Pathology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
| | - Keizo Kanasaki
- Department of Internal Medicine 1, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
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Sarangi PK, Parida S, Mangaraj S, Mohanty BK, Mohanty J, Swain BM. Diagnostic Utility of Mean Peak Systolic Velocity of Superior Thyroid Artery in Differentiating Graves' Disease from Thyroiditis. Indian J Radiol Imaging 2021; 31:311-317. [PMID: 34556913 PMCID: PMC8448216 DOI: 10.1055/s-0041-1734360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background
Differentiating Graves’ disease from thyroiditis can be at times clinically challenging. The gold standard test (thyroid nuclear imaging scan) is expensive, not routinely available, and has radiation exposure. Color Doppler ultrasonography of thyroid represents a suitable alternate which can be used for differentiating these conditions by studying thyroid blood flow parameters.
Aim
We aimed to investigate the use of thyroid blood flow parameters’ assessment of the superior thyroid artery (STA) and common carotid artery (CCA) with color Doppler ultrasonography for differentiating Graves’ disease from thyroiditis.
Materials and Methods
This is a cross-sectional study on 111 patients with newly diagnosed thyrotoxicosis (82 with Graves’ disease and 29 with thyroiditis) and 45 years of age and sex-matched healthy controls. All patients underwent detailed clinical and necessary investigations. Color Doppler ultrasonography of the thyroid gland and spectral flow analysis of both superior thyroid arteries was done using standard protocol. Sensitivity and specificity for mean peak systolic velocity of STA (STA-PSV) cut-offs were calculated using receiver operating characteristic curves.
Results
Patients with Graves’ disease have significantly higher free tri-iodothyronine (FT3) levels, free thyroxine (FT4) levels, antithyroid stimulating hormone receptor antibody (TRAb) levels, and thyroid volume as compared with those with thyroiditis. The mean STA-PSV of patients with Graves’ disease was significantly higher than thyroiditis and control group. Mean STA-PSV greater than 54.3 cm/s had 82.9% sensitivity and 86.2% specificity in diagnosing Graves’ disease. Mean PSV-STA/PSV-CCA ratio of 0.40 was 80.5% sensitive and 86.2% specific for Graves’ disease.
Conclusion
Mean STA-PSV has high sensitivity and specificity in differentiating Graves’ disease from thyroiditis and can be used routinely in clinical practice as a cheap and invaluable diagnostic tool.
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Affiliation(s)
- Pradosh K Sarangi
- Department of Radiodiagnosis, Srirama Chandra Bhanja Medical College and Hospital, Cuttack, Odisha, India
| | - Sasmita Parida
- Department of Radiodiagnosis, Pandit Raghunath Murmu Medical College and Hospital, Baripada, Odisha, India
| | - Swayamsidha Mangaraj
- Department of Endocrinology, Institute of Medical Sciences and SUM Hospital, Bhubaneswar, Odisha, India
| | - Binoy K Mohanty
- Department of Endocrinology, Maharaja Krishna Chandra Gajapati Medical College and Hospital, Berhampur, Odisha, India
| | - Jayashree Mohanty
- Department of Radiodiagnosis, Srirama Chandra Bhanja Medical College and Hospital, Cuttack, Odisha, India
| | - Basanta M Swain
- Department of Radiodiagnosis, Srirama Chandra Bhanja Medical College and Hospital, Cuttack, Odisha, India
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Hagiwara R, Suzuki D, Tonezawa S, Saikawa R, Funazaki S, Yoshida M, Washino S, Miyagawa T, Hara K, Yamada H. Spontaneous recovery of immune checkpoint inhibitor-induced thyroiditis with high free T4 level: A case report. Clin Case Rep 2021; 9:e04781. [PMID: 34512984 PMCID: PMC8423082 DOI: 10.1002/ccr3.4781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/09/2021] [Accepted: 08/22/2021] [Indexed: 12/19/2022] Open
Abstract
We describe a case of severe hyperthyroidism with high free thyroxine and C-reactive protein levels, wherein thyroid function rapidly improved without treatment. In a similar case, conservative management with imaging follow-up can be considered.
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Affiliation(s)
- Rie Hagiwara
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Daisuke Suzuki
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Shiori Tonezawa
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Rika Saikawa
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Shunsuke Funazaki
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Masashi Yoshida
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Satoshi Washino
- Department of UrologyJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Tomoaki Miyagawa
- Department of UrologyJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Kazuo Hara
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
| | - Hodaka Yamada
- Department of Endocrinology and MetabolismJichi Medical University Saitama Medical CenterSaitamaJapan
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11
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Tura Bahadır Ç, Yılmaz M, Kılıçkan E. Free triiodothyronine to free thyroxine ratio in the differential diagnosis of thyrotoxicosis and hyperthyroidism: A retrospective study. Int J Clin Pract 2021; 75:e14003. [PMID: 33403716 DOI: 10.1111/ijcp.14003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 01/03/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Thyroid ultrasound, thyroid scintigraphy and radioactive iodine uptake (RAIU) tests are helpful in the differential diagnosis of thyrotoxicosis and hyperthyroidism. In the setting where these techniques are unavailable or unusable more accessible, and cheaper techniques would be helpful. AIMS We evaluated the capability of free triiodothyronine to free thyroxine ratio (FT3/FT4) to differentiate Graves' Disease (GD) and destructive thyroiditis (DT). METHODS In total, 318 patients with GD and 140 patients with DT were included in the study. Patients were assigned to two groups: GD and DT (subacute thyroiditis, painless thyroiditis, postpartum thyroiditis). Serum thyroid-stimulating hormone (TSH), FT4, FT3 levels and FT3/FT4 ratio were evaluated in each group. To obtain the optimal diagnostic cut-off value of FT3, FT4 and FT3/FT4 ratio, ROC curve analysis was performed of all untreated thyrotoxicosis patients. RESULTS The optimal FT3/FT4 ratio cut-off value was 2.96, with a sensitivity of 71.7%, the specificity of 88.6%. The area under the ROC curve of the FT3/FT4 ratio regarding the diagnosis of GD was 0.864 (95% CI: 0.830-0.894). The cut-off level of FT3 for GD was determined as 6.6 pg/mL which had a sensitivity of 72.3% and specificity of 68.6% (AUC = 0.771 P < .001). The cut-off level of FT4 for GD was determined as 3.65 ng/dl with a sensitivity of 35.5% and specificity of 83.6% (AUC = 0.615 P < .001). When a high specificity is needed, FT3/FT4 cut-off value increases to 3.63 with 99.3% specificity and 36.5% sensitivity. CONCLUSIONS FT3/FT4 ratio helps distinguish GD and DT. In cases of situations where RAIU/scintigraphy and TRAb cannot be studied, the FT3/FT4 ratio is a viable diagnostic tool. Cut-off values with higher specificity can be more helpful in differential diagnosis of GD.
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Affiliation(s)
- Çiğdem Tura Bahadır
- Department of Endocrinology and Metabolism, Faculty of Medicine, Amasya University, Amasya, Turkey
| | - Merve Yılmaz
- Department of Endocrinology and Metabolism, Gazi State Hospital, Samsun, Turkey
| | - Elif Kılıçkan
- Department of Endocrinology and Metabolism, Ondokuz Mayıs University, Samsun, Turkey
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Komiya I, Tomoyose T, Yagi N, Ouchi G, Wakugami T. A case of thyrotoxicosis-induced anemia in a patient with painless thyroiditis. Thyroid Res 2021; 14:9. [PMID: 33892761 PMCID: PMC8062610 DOI: 10.1186/s13044-021-00100-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/11/2021] [Indexed: 11/14/2022] Open
Abstract
Background There have been several reports of secondary anemia associated with Graves’ disease. There are no reports of secondary anemia resulting from thyrotoxicosis due to painless thyroiditis (silent thyroiditis). We report the case of a patient with pancreatic diabetes who developed anemia caused by thyrotoxicosis due to painless thyroiditis. Case presentation The patient was a 37-year-old man who visited the hospital complaining of fatigue, palpitations, and dyspnea. His hemoglobin was 110 g/l (reference range, 135–176), and mean corpuscular volume was 81.5 fl (81.7–101.6). His free thyroxine (FT4) was high, at 100.4 pmol/l (11.6–21.9); the free triiodothyronine (FT3) was high, at 27.49 pmol/l (3.53–6.14); TSH was low, at < 0.01 mIU/l (0.50–5.00); and TSH receptor antibody was negative. Soluble IL-2 receptor (sIL-2R) was high, at 1340 U/ml (122–496); C-reactive protein (CRP) was high, at 6900 μg/l (< 3000); and reticulocytes was high, at 108 109 /l (30–100). Serum iron (Fe) was 9.5 (9.1–35.5), ferritin was 389 μg/l (13–401), haptoglobin was 0.66 g/l (0.19–1.70. Propranolol was prescribed and followed up. Anemia completely disappeared by 12 weeks after disease onset. Thyroid hormones and sIL-2R had normalized by 16 weeks after onset. He developed mild hypothyroidism and was treated with L-thyroxine at 24 weeks. Conclusions This is the first case report of transient secondary anemia associated with thyrotoxicosis due to painless thyroiditis. The change in sIL-2R was also observed during the clinical course of thyrotoxicosis and anemia, suggesting the immune processes in thyroid gland and bone marrow.
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Affiliation(s)
- Ichiro Komiya
- Department of Internal Medicine, Okinawa Medical Hospital, 2310 Tsuhako-Nishihara, Sashiki, Nanjo, Okinawa, 9011414, Japan. .,Yagi Internal Medicine Clinic, 4-13-9 Kohagura, Naha, Okinawa, 9000029, Japan.
| | - Takeaki Tomoyose
- Department of Hematology, Okinawa Red Cross Hospital, 1-3-1 Yogi, Naha, Okinawa, 9028588, Japan
| | - Noriharu Yagi
- Yagi Internal Medicine Clinic, 4-13-9 Kohagura, Naha, Okinawa, 9000029, Japan
| | - Gen Ouchi
- Department of Emergency and Critical Care Medicine, University of Ryukyus Hospital, 207 Uehara, Nishihara, Okinawa, 9030215, Japan
| | - Tamio Wakugami
- Department of Internal Medicine, Okinawa Medical Hospital, 2310 Tsuhako-Nishihara, Sashiki, Nanjo, Okinawa, 9011414, Japan
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13
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Abstract
Subclinical autoimmune thyroiditis exacerbates after delivery through immune rebound mechanisms and results in 5 types of thyroid dysfunction. The prevalence of postpartum thyroid dysfunction is around 5% in mothers in the general population. Typically, an exacerbation induces destructive thyrotoxicosis followed by transient hypothyroidism, known as postpartum thyroiditis. Late development of permanent hypothyroidism is found frequently and patients should be followed up once every one to two years. Destructive thyrotoxicosis in postpartum thyroiditis should carefully be differentiated from post-partum Graves' disease. Postpartum thyroiditis typically occurs 1-4 months after parturition whereas Graves' disease develops at 4-12 months postpartum. Anti-TSH receptor antibodies (TRAb) are typically positive and thyroid blood flow is high in Graves' disease, whereas these features are absent in postpartum thyroiditis. Postpartum Graves' disease should be treated with antithyroid drugs.
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Affiliation(s)
- Nobuyuki Amino
- Amino Thyroid Research Laboratory, 5-60-38 Nanpeidai, Takatsuki-shi, Osaka, 569-1042, Japan.
| | - Naoko Arata
- Division of Maternal Medicine, Center for Maternal-Fetal-Neonatal and Reproductive Medicine, National Center for Child Health and Development, 2-10-1 Okura, Setagayaku, Tokyo, 1578535, Japan.
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14
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Abbara A, Clarke SA, Brewster R, Simonnard A, Eng PC, Phylactou M, Papadopoulou D, Izzi-Engbeaya C, Sam AH, Wernig F, Jonauskyte E, Comninos AN, Meeran K, Kelsey TW, Dhillo WS. Pharmacodynamic Response to Anti-thyroid Drugs in Graves' Hyperthyroidism. Front Endocrinol (Lausanne) 2020; 11:286. [PMID: 32477269 PMCID: PMC7236601 DOI: 10.3389/fendo.2020.00286] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/16/2020] [Indexed: 12/31/2022] Open
Abstract
Objective: Graves' disease is the commonest cause of hyperthyroidism in populations with sufficient dietary iodine intake. Anti-thyroid drugs (ATD) are often used as the initial treatment for Graves' hyperthyroidism, however there is a paucity of data relating the dose of ATD therapy to the effect on thyroid hormone levels, increasing the risk of both over- and under-treatment. We aimed to determine the pharmacodynamic response to the ATD carbimazole. Design: Retrospective cohort study. Methods: Participants were patients (n = 441) diagnosed with Graves' disease at Imperial College Healthcare NHS Trust between 2009 and 2018. The main outcome measure was change in thyroid hormone levels in response to ATD. Results: Baseline thyroid hormone levels were positively associated with TSH receptor antibody titres (P < 0.0001). Baseline free triiodothyronine (fT3) were linearly related to free thyroxine (fT4) levels in the hyperthyroid state (fT3 = fT4*0.97-11), and fell proportionately with carbimazole. The percentage falls in fT4 and fT3 per day were associated with carbimazole dose (P < 0.0001). The magnitude of fall in thyroid hormones after the same dose of carbimazole was lower during follow up than at the initiation visit. The fall in thyroid hormone levels approximated to a linear response if assessed at least 3 weeks after commencement of carbimazole. Following withdrawal of antithyroid drug treatment, the risk of relapse was greater in patients with higher initial fT4, initial TSH receptor antibody titre, males, smokers, and British Caucasian ethnicity. Conclusion: We identify a dose-response relationship for fall in thyroid hormones in response to carbimazole to aid in the selection of dose for Graves' hyperthyroidism.
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Affiliation(s)
- Ali Abbara
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Sophie A. Clarke
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Rosalind Brewster
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Alexia Simonnard
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Pei Chia Eng
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Maria Phylactou
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Deborah Papadopoulou
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Chioma Izzi-Engbeaya
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Amir H. Sam
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Florian Wernig
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Eliza Jonauskyte
- School of Computer Science, University of St Andrews, St Andrews, United Kingdom
| | - Alexander N. Comninos
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Karim Meeran
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Tom W. Kelsey
- School of Computer Science, University of St Andrews, St Andrews, United Kingdom
| | - Waljit S. Dhillo
- Section of Endocrinology and Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Hammersmith Hospital, Imperial College London, London, United Kingdom
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
- *Correspondence: Waljit S. Dhillo
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15
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Hu Y, Zhou D, Chen J, Shan P. Eosinophil/Monocyte Ratio Combined With Serum Thyroid Hormone for Distinguishing Graves' Disease and Subacute Thyroiditis. Front Endocrinol (Lausanne) 2020; 11:264. [PMID: 32457697 PMCID: PMC7225255 DOI: 10.3389/fendo.2020.00264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 04/09/2020] [Indexed: 01/21/2023] Open
Abstract
Background: Thyrotoxicosis is commonly classified into several entities according to different etiologies. Identifying the causes of thyroid dysfunction is critical for the subsequent selection of treatment. The free triiodothyronine to free thyroxine ratio (fT3/fT4) is widely used but is still a controversial diagnostic measurement. Methods: A total of 290 patients including 141 healthy control subjects, 86 patients with untreated Graves' disease (GD,) and 63 patients with subacute thyroiditis (SAT) were enrolled in the study. The main aim was to evaluate the diagnostic value of different indexes from serum testing including fT3, fT4, eosinophils (Eo) and monocytes (Mo). The diagnostic performance of multiple indexes was evaluated separately using receiver operating characteristic curve analysis. Results: Sensitivities and specificities of fT4/fT3, Mo/Eo ratios and Mo/Eo ratio + fT4/fT3 for diagnosing GD were 80.23 and 88.89, 82.56 and 60.32, and 74.4 and 87.3 with cut-off values of ≤ 2.841, ≤ 8.813 and >0.644, respectively. An equation of combined indicators including Mo, Eo, fT3, and fT4 data was developed to calculate a probability value and among all indexes studied the indicator combination formula gave the best diagnostic value, reaching sensitivity and specificity of 89.53 and 90.48%, respectively, with an optimum cut-off value at 0.561 for GD diagnosis. Conclusion: Compared to regular indexes (fT4/fT3 and Mo/Eo), a newly developed indicator combination formula provided a higher prediction probability and may serve as a simple, cost-effective tool for differentiating GD from SAT patients, especially in undeveloped regions of China.
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Affiliation(s)
- Yongbin Hu
- Department of Endocrinology, Hangzhou Red Cross Hospital, Hangzhou, China
| | - Diyi Zhou
- Department of Endocrinology, Hangzhou Red Cross Hospital, Hangzhou, China
- *Correspondence: Diyi Zhou
| | - Jiawei Chen
- Department of Endocrinology, Hangzhou Red Cross Hospital, Hangzhou, China
| | - Pengfei Shan
- Department of Endocrinology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
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16
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Wu Z, Zhu Y, Zhang M, Wang C, Zhou L, Liu W, Yang W, Li M, Zhang S, Ren Q, Han X, Ji L. Serum Ratio of Free Triiodothyronine to Thyroid-Stimulating Hormone: A Novel Index for Distinguishing Graves' Disease From Autoimmune Thyroiditis. Front Endocrinol (Lausanne) 2020; 11:620407. [PMID: 33488527 PMCID: PMC7821852 DOI: 10.3389/fendo.2020.620407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/07/2020] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE Graves' disease (GD) and autoimmune thyroiditis (AIT) are two major causes of thyrotoxicosis that require correct diagnosis to plan appropriate treatment. The objectives of this study were to evaluate the usefulness of thyroid-related parameters for distinguishing GD from AIT and identify a novel index for differential diagnosis of thyrotoxicosis. DESIGN This retrospective study was performed using electronic medical records in Peking University People's Hospital (Beijing, China). METHODS In total, 650 patients with GD and 155 patients with AIT from December 2015 to October 2019 were included in cohort 1. Furthermore, 133 patients with GD and 14 patients with AIT from December 2019 to August 2020 were included in cohort 2 for validation of the novel index identified in cohort 1. All patients were of Chinese ethnicity and were newly diagnosed with either GD or AIT. Thyroid-related clinical information was collected before intervention by reviewing the patients' electronic medical records. Receiver operating characteristic curve analysis was used to identify the optimal cutoff for distinguishing GD from AIT. RESULTS In cohort 1, thyroid-stimulating hormone (TSH) receptor antibody was identified as the best indicator for distinguishing GD from AIT. The area under the receiver operating characteristic curve was 0.99(95% confidence interval: 0.98-0.99, p<0.0001)and the optimal cutoff was 0.84 IU/l (98% sensitivity and 99% specificity). The free triiodothyronine (FT3)/TSH ratio (FT3/TSH) was the second -best for distinguishing GD from AIT, the area under the receiver operating characteristic curve of FT3/TSH was 0.86 (95% confidence interval: 0.84-0.88, p<0.0001); its optimal cutoff was 1.99 pmol/mIU (79% sensitivity and 80% specificity). Its effectiveness was confirmed in cohort 2 (81% sensitivity and 100% specificity). CONCLUSIONS The FT3/TSH ratio is a new useful index for differential diagnosis of thyrotoxicosis, especially when combined with TRAb.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Xueyao Han
- *Correspondence: Linong Ji, ; Xueyao Han,
| | - Linong Ji
- *Correspondence: Linong Ji, ; Xueyao Han,
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17
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Sun X, Liu W, Zhang B, Shen X, Hu C, Chen X, Jin S, Jiang Y, Liu H, Cao Z, Xia W, Xu S, Li Y. Maternal Heavy Metal Exposure, Thyroid Hormones, and Birth Outcomes: A Prospective Cohort Study. J Clin Endocrinol Metab 2019; 104:5043-5052. [PMID: 30994896 DOI: 10.1210/jc.2018-02492] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 04/11/2019] [Indexed: 12/20/2022]
Abstract
CONTEXT Maternal thyroid hormones during pregnancy play a critical role in fetal development. However, whether maternal heavy metal exposure affects their thyroid hormones and the effects on fetal growth are still unclear. OBJECTIVE To explore the effect of heavy metal exposure on maternal thyroid hormones and the potential mediation role of thyroid hormones on birth outcomes. METHODS Concentrations of heavy metals in urine samples and thyroid hormones in blood samples of 675 pregnant women were measured during early pregnancy in a cohort study conducted in China. Multivariable linear regressions were applied to explore the associations of maternal urinary heavy metal levels with both maternal thyroid hormones and birth outcomes. Mediation analyses were performed to assess the mediation role of thyroid hormones in these associations. RESULTS Maternal urinary vanadium (V) exhibited an inverse association with free T3 (FT3) and FT3/free T4 (FT4) ratio levels. Urinary arsenic (As) and lead (Pb) had inverse relationships with FT3. We also observed the positive associations of maternal FT3 and FT3/FT4 ratio with birthweight. The mediation analyses suggested that 5.33% to 30.57% of the associations among V, As, and Pb levels and birth size might be mediated by maternal FT3 or FT3/FT4 ratio. CONCLUSIONS We have shown that maternal exposures to V, As, and Pb at early pregnancy were associated with decreased maternal FT3 or FT3/FT4 ratio, which might contribute to reduced birthweight. Mediation analyses indicated that maternal thyroid hormone was a possible mediator of the association between urinary heavy metals and birth size.
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Affiliation(s)
- Xiaojie Sun
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wenyu Liu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Bin Zhang
- Women and Children Medical and Healthcare Center of Wuhan, Wuhan, Hubei, China
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chen Hu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaomei Chen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuna Jin
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yangqian Jiang
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hongxiu Liu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhongqiang Cao
- Women and Children Medical and Healthcare Center of Wuhan, Wuhan, Hubei, China
| | - Wei Xia
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shunqing Xu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yuanyuan Li
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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18
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Chen X, Zhou Y, Zhou M, Yin Q, Wang S. Diagnostic Values of Free Triiodothyronine and Free Thyroxine and the Ratio of Free Triiodothyronine to Free Thyroxine in Thyrotoxicosis. Int J Endocrinol 2018; 2018:4836736. [PMID: 29971103 PMCID: PMC6008621 DOI: 10.1155/2018/4836736] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 04/16/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The results of previous studies on the usefulness of free triiodothyronine (FT3) to free thyroxine (FT4) are controversial. We investigated the usefulness of FT3, FT4, and FT3/FT4 ratio in differentiating Graves' disease (GD) from destructive thyroiditis. METHODS A total of 126 patients with untreated GD, 36 with painless thyroiditis, 18 with painful subacute thyroiditis, and 63 healthy controls, were recruited. The levels of FT3 and FT4 and the FT3/FT4 ratios for the different etiologies of thyrotoxicosis were evaluated separately by receiver operating characteristic (ROC) curve analysis. The expression levels of type 1 and type 2 deiodinase (DIO1 and DIO2) in thyroid tissues were also investigated. RESULTS The optimal cut-off values were 7.215 pmol/L for FT3, 21.71 pmol/L for FT4, and 0.4056 for the FT3/FT4 ratio. The specificity and positive predictive value of the FT3/FT4 ratio were highest for values > 0.4056. DIO1 mRNA expression was significantly higher in the thyroid tissue of patients with GD (P = 0.013). CONCLUSIONS We demonstrated that the FT3/FT4 ratio was useful in differentiating GD from destructive thyroiditis. In addition, a relatively high expression of type 1 deiodinase in the thyroid might be responsible for the high FT3/FT4 ratio in patients with GD.
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Affiliation(s)
- Xinxin Chen
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Yulin Zhou
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Mengxi Zhou
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Qinglei Yin
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Shu Wang
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
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19
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Kim MJ, Cho SW, Choi S, Ju DL, Park DJ, Park YJ. Changes in Body Compositions and Basal Metabolic Rates during Treatment of Graves' Disease. Int J Endocrinol 2018; 2018:9863050. [PMID: 29853888 PMCID: PMC5960571 DOI: 10.1155/2018/9863050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/13/2018] [Accepted: 04/03/2018] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES Because thyroid hormone is an important determinant of body weight and basal metabolic rate, we investigated the changes in the basal metabolic rate and body composition sequentially after treatment for Graves' disease. METHODS A prospective cohort study was performed with six women newly diagnosed with Graves' disease. During a 52-week treatment of methimazole, body composition, resting respiratory expenditure (REE), and handgrip strength were measured consecutively. RESULTS After methimazole treatment, body weight was initially increased (0-8 weeks), subsequently plateaued (8-24 weeks), and gradually decreased in the later period (24-52 weeks) despite the decreased food intake. The measured REE was 40% higher than the predicted REE at baseline, and it gradually decreased after treatment. REE positively correlated with thyroid hormone levels, peripheral deiodinase activity, and thyroid's secretory capacity. Body compositional analyses showed that the fat mass increased during an earlier period (4-12 weeks), while the lean mass increased significantly during the later period (26-52 weeks). Consistent with the lean mass changes, muscle strength also significantly increased during the later period. CONCLUSIONS Treatment of Graves' disease increased body weight and fat mass transiently with decreased REE. However, long-term compositional changes moved in a beneficial direction increasing lean mass and reinforcing muscle strength, following decreasing fat percentages.
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Affiliation(s)
- Min Joo Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sun Wook Cho
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sumin Choi
- Department of Food Service and Nutrition Care, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dal Lae Ju
- Department of Food Service and Nutrition Care, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do Joon Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
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Abdel Razek AAK, Abd Allah SS, El-Said AAEH. Role of Diffusion-Weighted Magnetic Resonance (MR) Imaging in Differentiation Between Graves' Disease and Painless Thyroiditis. Pol J Radiol 2017; 82:536-541. [PMID: 29662585 PMCID: PMC5894041 DOI: 10.12659/pjr.902416] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 01/14/2017] [Indexed: 12/14/2022] Open
Abstract
Background To assess the role of diffusion-weighted MR imaging in differentiation between Graves’ disease and painless thyroiditis. Material/Methods A prospective study was conducted among 37 consecutive patients with untreated thyrotoxicosis (25 female and 12 male; mean age of 44 years) and 15 ageand sex-matched controls. Diffusion-weighted MR imaging of the thyroid gland was performed in patients and controls. The apparent diffusion coefficient (ADC) value of the thyroid gland was calculated and correlated with Tc-99m uptake and thyroid function tests of the patients. Results There was a significant difference in the ADC value of the thyroid gland between patients and the control group (P=0.001). The mean ADC value of the thyroid gland in Graves’ disease was 2.03±0.28×10–3 mm2/sec, and in patients with painless thyroiditis 1.46±0.22×10–3 mm2/sec, respectively. There was a significant difference in the ADC values between Graves’ disease and painless thyroiditis (P=0.001). When the ADC value of 1.45×10–3 mm2/sec was used as a threshold value for differentiating Graves’ disease from painless thyroiditis, the best result was obtained with area under the curve of 0.934, accuracy of 83.8%, sensitivity of 95.8%, and specificity of 61.5%. The mean ADC value of the thyroid gland in patients positively correlated with serum TRAb and Tc-99m uptake (r=0.57, P=0.001 and r=0.74, P=0.001, respectively). Conclusions We concluded that ADC values of the thyroid gland can be used to differentiate Graves’ disease from painless thyroiditis in patients with untreated thyrotoxicosis.
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Delivanis DA, Gustafson MP, Bornschlegl S, Merten MM, Kottschade L, Withers S, Dietz AB, Ryder M. Pembrolizumab-Induced Thyroiditis: Comprehensive Clinical Review and Insights Into Underlying Involved Mechanisms. J Clin Endocrinol Metab 2017; 102:2770-2780. [PMID: 28609832 PMCID: PMC5546861 DOI: 10.1210/jc.2017-00448] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/02/2017] [Indexed: 12/21/2022]
Abstract
CONTEXT Thyroid immune-related adverse events (irAEs) in patients treated with programmed death receptor-1 (PD-1) blockade are increasingly recognized as one of the most common adverse effects. Our aim was to determine the incidence and examine the potential mechanisms of anti-PD-1-induced thyroid irAEs. DESIGN Single-center, retrospective cohort study. PATIENTS AND MEASUREMENTS We studied 93 patients with advanced cancer (ages 24 to 82 years; 60% males) who received at least one infusion of pembrolizumab. Thyroid test results and thyroid imaging modalities were reviewed. Comprehensive 10-color flow cytometry of peripheral blood was performed. RESULTS Thirteen (14%) thyroid irAEs were observed. Thyroiditis occurred in seven patients (54%), from which four recovered. New onset of hypothyroidism overt/subclinical developed in three patients. Levothyroxine dosing required doubling in three patients with a known history of hypothyroidism. Thyroperoxidase antibodies were positive in the minority of the patients [4/13 (31%)] and diffuse increased 18fludeoxyglucose uptake of the thyroid gland was observed in the majority [7/11 (64%)] of patients. We observed more circulating CD56+CD16+ natural killer (NK) cells and an elevated HLA-DR surface expression in the inflammatory intermediate CD14+CD16+ monocytes in anti-PD-1-treated patients. CONCLUSIONS Thyroid dysfunction is common in cancer patients treated with pembrolizumab. Reversible destructive thyroiditis and overt hypothyroidism are the most common clinical presentations. The mechanism of thyroid destruction appears independent of thyroid autoantibodies and may include T cell, NK cell, and/or monocyte-mediated pathways. Because the thyroid is a frequent target of anti-PD-1 therapies, patients with therapeutically refractory thyroid cancer may be ideal candidates for this treatment.
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Affiliation(s)
- Danae A. Delivanis
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota 55905
| | - Michael P. Gustafson
- Human Cell Therapy Laboratory, Division of Transfusion Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota 55905
| | - Svetlana Bornschlegl
- Department of Laboratory Medicine & Pathology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Michele M. Merten
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota 55905
| | - Lisa Kottschade
- Division of Medical Oncology, Mayo Clinic, Rochester, Minnesota 55905
| | - Sarah Withers
- Department of Laboratory Medicine & Pathology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Allan B. Dietz
- Human Cell Therapy Laboratory, Division of Transfusion Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota 55905
| | - Mabel Ryder
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota 55905
- Division of Medical Oncology, Mayo Clinic, Rochester, Minnesota 55905
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Baral S, Shrestha PK, Pant V. Serum Free T 3 to Free T 4 Ratio as a Useful Indicator for Differentiating Destruction Induced Thyrotoxicosis from Graves' Disease. J Clin Diagn Res 2017; 11:OC12-OC14. [PMID: 28892954 DOI: 10.7860/jcdr/2017/28293.10180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Accepted: 06/01/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Thyrotoxicosis is a common disease encountered in Endocrine Outpatient Department (OPD). Two common causes of thyrotoxicosis are Destruction Induced Thyrotoxicosis (DIT) and Graves' Disease (GD). Differentiating DIT and GD based on clinical findings, is often not possible due to nonspecific symptoms. Thyroid scan is considered most reliable method for differentiating DIT and GD. AIM To differentiate DIT and GD using the ratio of free triiodothyronine (fT3) and free thyroxine (fT4) thus avoiding thyroid technetium scan which is expensive and not accessible in developing countries like Nepal. MATERIALS AND METHODS Patients attending Endocrine OPD with diagnosis of thyrotoxicosis at their first visit in which Thyroid technetium scan could be done were taken as sample. The study was conducted from mid-June 2016 to February 2017 and total 55 samples were taken. Only selected cases were taken where diagnostic dilemma was present. Report of Thyroid Function Test (TFT) of patient at their first visit and findings of thyroid scan were recorded. Ratio of freeT3 and freeT4 was obtained in each case. ROC curve was plotted and the cut off value for differentiation of DIT and GD was obtained. All data were analysed using SPSS software version 20.0. RESULTS Mean ratio of fT3 to fT4 in GD and DIT was 0.395 and 0.287 respectively which was significant. On ROC analysis, cut off ratio for differentiating GD and DIT was 0.30 with sensitivity of 87% and specificity of 62.5%. CONCLUSION It is recommended that thyroid scan can be avoided if ratio of fT3 and fT4 is less than 0.3 and a diagnosis of DIT can be made.
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Affiliation(s)
- Suman Baral
- Faculty Doctor, Endocrinology Unit, Department of Medicine, Institute of Medicine, Kathmandu, Nepal
| | - Pradeep Krishna Shrestha
- Professor and Head, Endocrinology Unit, Department of Medicine, Institute of Medicine, Kathmandu, Nepal
| | - Vivek Pant
- Resident Doctor, Department of Biochemistry, Institute of Medicine, Kathmandu, Nepal
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Chen DW, Du Z, Zhang CZ, Zhang WH, Cao YF, Sun HZ, Zhu ZT, Yang K, Liu YZ, Zhao ZW, Fu ZW, Gu WQ, Yu Y, Fang ZZ. The inhibition of UDP-glucuronosyltransferases (UGTs) by tetraiodothyronine (T4) and triiodothyronine (T3). Xenobiotica 2017; 48:250-257. [DOI: 10.1080/00498254.2017.1304593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Da-Wei Chen
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
| | - Zuo Du
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
| | - Chun-Ze Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China, and
| | - Wei-Hua Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China, and
| | - Yun-Feng Cao
- Key Laboratory of Liaoning Tumor Clinical Metabolomics (KLLTCM), Jinzhou, Liaoning, China
| | - Hong-Zhi Sun
- Key Laboratory of Liaoning Tumor Clinical Metabolomics (KLLTCM), Jinzhou, Liaoning, China
| | - Zhi-Tu Zhu
- Key Laboratory of Liaoning Tumor Clinical Metabolomics (KLLTCM), Jinzhou, Liaoning, China
| | - Kun Yang
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
| | - Yong-Zhe Liu
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
| | - Ze-Wei Zhao
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
| | - Zhi-Wei Fu
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
| | - Wen-Qing Gu
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,
| | - Yang Yu
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,
| | - Zhong-Ze Fang
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China,
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Avs AK, Mohan A, Kumar PG, Puri P. Scintigraphic Profile of Thyrotoxicosis Patients and Correlation with Biochemical and Sonological Findings. J Clin Diagn Res 2017; 11:OC01-OC03. [PMID: 28658823 DOI: 10.7860/jcdr/2017/26093.9770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 03/20/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Thyrotoxicosis is a spectrum of disorder with a rather common clinical presentation with different aetiologies. The aetiological diagnosis is important as the management differs. It is essential to accurately diagnose the cause before starting treatment. Scintigraphy of thyroid helps in differentiating accurately the various causes. USG is routinely being advocated and T3/T4 ratio has also been used. AIM This study aims to evaluate the scintigraphic profile of thyrotoxicosis patients and to correlate biochemical and USG findings with scintigraphy. MATERIALS AND METHODS A total of 60 newly diagnosed thyrotoxicosis patients based on biochemical reports were included in the study. They underwent further evaluation with ultrasonography and 99mTc scintigraphy. RESULTS Of 60 patients of thyrotoxicosis, 45 cases were of Grave's disease, 10 cases were of thyroiditis and five cases were of Toxic Multinodular Goiter (MNG). The clinical characteristics were helpful in establishing the diagnosis in only six (10%) patients who presented with classic features of Grave's disease with ophthalmopathy. T3/T4 ratio greater than 20 was seen only in 29 (66%) patients of Grave's disease and also in three (33.33%) of thyroiditis patients. USG had a sensitivity and specificity of 81.82% and 93.75% in diagnosing Graves' disease and 100% and 82.4% in diagnosing thyroiditis respectively. CONCLUSION Clinical findings do not help in accurately delineating aetiological diagnosis of thyrotoxicosis. Serum T3/T4 ratio when used as a criterion has marked overlap between the various conditions causing thyrotoxicosis. USG has reasonable sensitivity however, misses many cases of early Grave's disease. Follow up scintigraphy helps in a small population with resolving thyroiditis or early Grave's disease where the initial scintiscan is normal or inconclusive.
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Affiliation(s)
- Anil Kumar Avs
- Professor, Department of Nuclear Medicine, Command Hospital C/O AFMC, Pune, Maharashtra, India
| | - Abhish Mohan
- Senior Resident, Department of Medicine, AFMC, Pune, Maharashtra, India
| | - P G Kumar
- Professor, Department of Medicine, Command Hospital C/O AFMC, Pune, Maharashtra, India
| | - Pankaj Puri
- Professor and Head, Department of Medicine, AFMC, Pune, Maharashtra, India
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Janssen BG, Saenen ND, Roels HA, Madhloum N, Gyselaers W, Lefebvre W, Penders J, Vanpoucke C, Vrijens K, Nawrot TS. Fetal Thyroid Function, Birth Weight, and in Utero Exposure to Fine Particle Air Pollution: A Birth Cohort Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:699-705. [PMID: 27623605 PMCID: PMC5382000 DOI: 10.1289/ehp508] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 08/08/2016] [Accepted: 08/16/2016] [Indexed: 05/22/2023]
Abstract
BACKGROUND Thyroid hormones are critical for fetal development and growth. Whether prenatal exposure to fine particle air pollution (≤ 2.5 μm; PM2.5) affects fetal thyroid function and what the impact is on birth weight in normal healthy pregnancies have not been studied yet. OBJECTIVES We studied the impact of third-trimester PM2.5 exposure on fetal and maternal thyroid hormones and their mediating role on birth weight. METHODS We measured the levels of free thyroid hormones (FT3, FT4) and thyroid-stimulating hormone (TSH) in cord blood (n = 499) and maternal blood (n = 431) collected after delivery from mother-child pairs enrolled between February 2010 and June 2014 in the ENVIRONAGE birth cohort with catchment area in the province of Limburg, Belgium. RESULTS An interquartile range (IQR) increment (8.2 μg/m3) in third-trimester PM2.5 exposure was inversely associated with cord blood TSH levels (-11.6%; 95% CI: -21.8, -0.1) and the FT4/FT3 ratio (-62.7%; 95% CI: -91.6, -33.8). A 10th-90th percentile decrease in cord blood FT4 levels was associated with a 56 g decrease in mean birth weight (95% CI: -90, -23). Assuming causality, we estimated that cord blood FT4 mediated 21% (-19 g; 95% CI: -37, -1) of the estimated effect of an IQR increment in third-trimester PM2.5 exposure on birth weight. Third-trimester PM2.5 exposure was inversely but not significantly associated with maternal blood FT4 levels collected 1 day after delivery (-4.0%, 95% CI: -8.0, 0.2 for an IQR increment in third-trimester PM2.5). CONCLUSIONS In our study population of normal healthy pregnancies, third-trimester exposure to PM2.5 air pollution was associated with differences in fetal thyroid hormone levels that may contribute to reduced birth weight. Additional research is needed to confirm our findings in other populations and to evaluate potential consequences later in life.
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Affiliation(s)
- Bram G. Janssen
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Nelly D. Saenen
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Harry A. Roels
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Université catholique de Louvain, Brussels, Belgium
| | - Narjes Madhloum
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Wilfried Gyselaers
- Biomedical Research Institute, Hasselt University, Hasselt, Belgium
- Department of Obstetrics, East-Limburg Hospital, Genk, Belgium
| | - Wouter Lefebvre
- Flemish Institute for Technological Research (VITO), Mol, Belgium
| | - Joris Penders
- Biomedical Research Institute, Hasselt University, Hasselt, Belgium
- Department of Clinical Biology, East-Limburg Hospital, Genk, Belgium
| | | | - Karen Vrijens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Tim S. Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- Department of Public Health and Primary Care, Occupational and Environmental Medicine, Leuven University, Leuven, Belgium
- Address correspondence to T.S. Nawrot, Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, 3590 Diepenbeek, Belgium. Telephone: 32-11-268382. E-mail:
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Sriphrapradang C, Bhasipol A. Differentiating Graves' disease from subacute thyroiditis using ratio of serum free triiodothyronine to free thyroxine. Ann Med Surg (Lond) 2016; 10:69-72. [PMID: 27570620 PMCID: PMC4990637 DOI: 10.1016/j.amsu.2016.07.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 07/25/2016] [Accepted: 07/25/2016] [Indexed: 11/19/2022] Open
Abstract
Background The measurement of free thyroid hormone, instead of the total form, is more commonly used in current practice. We aimed to evaluate the usefulness of the ratio of serum free triiodothyronine (FT3, pg/mL) to free thyroxine (FT4, ng/dL) for differentiating Graves' disease from subacute thyroiditis. Materials and methods Medical records of thyrotoxic patients aged >15 years who had measurement of FT3, FT4 and thyrotropin on the first diagnosis of thyrotoxicosis before initiating treatment were retrospectively reviewed. Data were collected from all clinics, and were not limited to the endocrine clinic. Pregnant women were excluded. Results A total of 548 patients (468 with Graves' disease, 40 with subacute thyroiditis and 40 with toxic adenoma/multinodular goiter) were recruited. Mean age was 43.9 ± 15.4 years. Most were female 434 (79.2%), and goiter was present in 55.3%. Prevalence of T3-toxicosis and T4-toxicosis were 5.6% and 6.6%, respectively. Mean FT3/FT4 ratios were 4.62 ± 2 (10−2 pg/ng) in patients with Graves' disease and 2.73 ± 0.5 in subacute thyroiditis. The area under the ROC curve of the FT3/FT4 ratio for diagnosis of Graves' disease was 0.83 (95%CI, 0.76–0.91). Cutoff level of this ratio >4.4 offered sensitivity of 47.2% and specificity of 92.8%. Conclusions FT3/FT4 ratio of >4.4 (10−2 pg/ng) may help in differentiating the cause of thyrotoxicosis. The ideal treatment of thyrotoxicosis should be directed at its etiology. Serum total triiodothyronine (T3): thyroxine (T4) ratio (ng/ug) of >20 suggests Graves' disease. In the current practice, the measurement of free thyroid hormone is more commonly used. Serum free T3/free T4 ratio of >4.4 (10−2 pg/ng) may help in differentiating the cause of thyrotoxicosis.
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Key Words
- Ab, antibody
- FT3, free triiodothyronine
- FT4, free thyroxine
- Graves' disease
- Sensitivity and specificity
- Subacute thyroiditis
- TFTs, thyroid function tests
- TPO, thyroid peroxidase
- TRAb, thyrotropin receptor antibody
- TSH, thyroid-stimulating hormone
- TT3, total triiodothyronine
- TT4, total thyroxine
- Tg, thyroglobulin
- Thyroid function tests
- Thyrotoxicosis
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Affiliation(s)
- Chutintorn Sriphrapradang
- Corresponding author. Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama 6 Road, Rajthevi, Bangkok 10400, Thailand.Department of MedicineFaculty of Medicine Ramathibodi HospitalMahidol University270 Rama 6 RoadRajtheviBangkok10400Thailand
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Liu L, Lu H, Liu Y, Liu C, Xun C. Predicting relapse of Graves' disease following treatment with antithyroid drugs. Exp Ther Med 2016; 11:1453-1458. [PMID: 27073464 DOI: 10.3892/etm.2016.3058] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 12/04/2015] [Indexed: 12/18/2022] Open
Abstract
The aim of the present study was to monitor long term antithyroid drug treatments and to identify prognostic factors for Graves' disease (GD). A total of 306 patients with GD who were referred to the Endocrinology Clinic at Weifang People's Hospital (Weifang, China) between August 2005 and June 2009 and treated with methimazole were included in the present study. Following treatment, patients were divided into non-remission, including recurrence and constant treatment subgroups, and remission groups. Various prognosis factors were analyzed and compared, including: Patient age, gender, size of thyroid prior to and following treatment, thyroid hormone levels, disease relapse, hypothyroidism and drug side-effects, and states of thyrotropin suppression were observed at 3, 6 and 12 months post-treatment. Sixty-five patients (21.2%) were male, and 241 patients (78.8%) were female. The mean age was 42±11 years, and the follow-up was 31.5±6.8 months. Following long-term treatment, 141 patients (46%) demonstrated remission of hyperthyroidism with a mean duration of 18.7±1.9 months. The average age at diagnosis was 45.6±10.3 years in the remission group, as compared with 36.4±8.8 years in the non-remission group (t=3.152; P=0.002). Free thyroxine (FT)3 levels were demonstrated to be 25.2±8.9 and 18.7±9.4 pmol/l in the non-remission and remission groups, respectively (t=3.326, P=0.001). The FT3/FT4 ratio and thyrotrophin receptor antibody (TRAb) levels were both significantly higher in the non-remission group (t=3.331, 3.389, P=0.001), as compared with the remission group. Logistic regression analysis demonstrated that elevated thyroid size, FT3/FT4 ratio and TRAb at diagnosis were associated with poor outcomes. The ratio of continued thyrotropin suppression in the recurrent subgroup was significantly increased, as compared with the remission group (P=0.001), as thyroid function reached euthyroid state at 3, 6 and 12 months post-treatment. Patients with GD exhibiting large thyroids, high pre-mediation TRAb levels and elevated FT3/FT4 ratios responded less markedly to antithyroid drug treatments, as compared with patients not exhibiting these prognostic factors. Furthermore, patients with large thyroids, post-medication ophthalmopathy and continued thyrotropin suppression demonstrated higher rates of recurrence.
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Affiliation(s)
- Lin Liu
- Department of Endocrinology, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Hongwen Lu
- Department of Endocrinology, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Yang Liu
- Department of Endocrinology, Kailuan General Hospital, Tangshan, Hebei 063000, P.R. China
| | - Changshan Liu
- Department of Endocrinology, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Chu Xun
- Department of Genetics, Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center, Shanghai Academy of Science and Technology, Shanghai 201203, P.R. China
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Dietrich JW, Landgrafe-Mende G, Wiora E, Chatzitomaris A, Klein HH, Midgley JEM, Hoermann R. Calculated Parameters of Thyroid Homeostasis: Emerging Tools for Differential Diagnosis and Clinical Research. Front Endocrinol (Lausanne) 2016; 7:57. [PMID: 27375554 PMCID: PMC4899439 DOI: 10.3389/fendo.2016.00057] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 05/23/2016] [Indexed: 11/30/2022] Open
Abstract
Although technical problems of thyroid testing have largely been resolved by modern assay technology, biological variation remains a challenge. This applies to subclinical thyroid disease, non-thyroidal illness syndrome, and those 10% of hypothyroid patients, who report impaired quality of life, despite normal thyrotropin (TSH) concentrations under levothyroxine (L-T4) replacement. Among multiple explanations for this condition, inadequate treatment dosage and monotherapy with L-T4 in subjects with impaired deiodination have received major attention. Translation to clinical practice is difficult, however, since univariate reference ranges for TSH and thyroid hormones fail to deliver robust decision algorithms for therapeutic interventions in patients with more subtle thyroid dysfunctions. Advances in mathematical and simulative modeling of pituitary-thyroid feedback control have improved our understanding of physiological mechanisms governing the homeostatic behavior. From multiple cybernetic models developed since 1956, four examples have also been translated to applications in medical decision-making and clinical trials. Structure parameters representing fundamental properties of the processing structure include the calculated secretory capacity of the thyroid gland (SPINA-GT), sum activity of peripheral deiodinases (SPINA-GD) and Jostel's TSH index for assessment of thyrotropic pituitary function, supplemented by a recently published algorithm for reconstructing the personal set point of thyroid homeostasis. In addition, a family of integrated models (University of California-Los Angeles platform) provides advanced methods for bioequivalence studies. This perspective article delivers an overview of current clinical research on the basis of mathematical thyroid models. In addition to a summary of large clinical trials, it provides previously unpublished results of validation studies based on simulation and clinical samples.
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Affiliation(s)
- Johannes W. Dietrich
- Medical Department I, Endocrinology and Diabetology, Bergmannsheil University Hospitals, Ruhr University of Bochum, Bochum, Germany
- Ruhr Center for Rare Diseases (CeSER), Ruhr University of Bochum, Bochum, Germany
- Ruhr Center for Rare Diseases (CeSER), Witten/Herdecke University, Bochum, Germany
- *Correspondence: Johannes W. Dietrich,
| | - Gabi Landgrafe-Mende
- Zentrum für Unfallchirurgie, Orthopädie und Wirbelsäulenchirurgie, HELIOS Klinikum Schwelm, Schwelm, Germany
| | - Evelin Wiora
- Medical Department I, Endocrinology and Diabetology, Bergmannsheil University Hospitals, Ruhr University of Bochum, Bochum, Germany
| | - Apostolos Chatzitomaris
- Medical Department I, Endocrinology and Diabetology, Bergmannsheil University Hospitals, Ruhr University of Bochum, Bochum, Germany
| | - Harald H. Klein
- Medical Department I, Endocrinology and Diabetology, Bergmannsheil University Hospitals, Ruhr University of Bochum, Bochum, Germany
- Ruhr Center for Rare Diseases (CeSER), Ruhr University of Bochum, Bochum, Germany
- Ruhr Center for Rare Diseases (CeSER), Witten/Herdecke University, Bochum, Germany
| | | | - Rudolf Hoermann
- Department of Nuclear Medicine, Klinikum Luedenscheid, Luedenscheid, Germany
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Uchida T, Suzuki R, Kasai T, Onose H, Komiya K, Goto H, Takeno K, Ishii S, Sato J, Honda A, Kawano Y, Himuro M, Yamada E, Yamada T, Watada H. Cutoff value of thyroid uptake of (99m)Tc-pertechnetate to discriminate between Graves' disease and painless thyroiditis: a single center retrospective study. Endocr J 2016; 63:143-9. [PMID: 26581846 DOI: 10.1507/endocrj.ej15-0441] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Thyroid uptake of (99m)Tc-pertechnetate is a useful way to determine the cause of thyrotoxicosis. In daily clinical practice, (99m)Tc-pertechnetate uptake is used to discriminate between Graves' disease and painless thyroiditis when clinical information is not enough to make the distinction. However, since the optimal cutoff value of (99m)Tc-pertechnetate uptake has not yet been elucidated, our aim was to determine this value. We recruited patients with thyrotoxicosis in whom (99m)Tc-pertechnetate uptake was measured in clinical settings between 2009 and 2013. Three experienced endocrinologists (who were blinded to the value of (99m)Tc-pertechnetate uptake and initial treatment) diagnosed the cause of thyrotoxicosis based on thyrotropin, free triiodothyronine, free thyroxine, and thyrotropin receptor antibody levels, and by ultrasound findings and using images of thyroid uptake of (99m)Tc-pertechnetate without the actual values. Ninety-four patients diagnosed as having Graves' disease or painless thyroiditis were finally included. According to the diagnosis, the optimal cutoff value of (99m)Tc-pertechnetate uptake was determined by receiver operating characteristics analysis. A cutoff value of 1.0% provided optimal sensitivity and specificity of 96.6% and 97.1%, respectively. Then, its validity was confirmed in 78 patients with confirmed Graves' disease or painless thyroiditis diagnosed at another institute. Applying this cutoff value to the patients with thyrotoxicosis revealed positive and negative predictive values for Graves' disease of 100% and 88.9%, respectively. In conclusion, a cutoff value for (99m)Tc-pertechnetate uptake of 1.0% was useful to discriminate between Graves' disease and painless thyroiditis.
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Affiliation(s)
- Toyoyoshi Uchida
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
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Oto Y, Muroya K, Hanakawa J, Asakura Y, Adachi M. The ratio of serum free triiodothyronine to free thyroxine in children: a retrospective database survey of healthy short individuals and patients with severe thyroid hypoplasia or central hypothyroidism. Thyroid Res 2015; 8:10. [PMID: 26157488 PMCID: PMC4495644 DOI: 10.1186/s13044-015-0023-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 06/30/2015] [Indexed: 11/26/2022] Open
Abstract
Background The ratio of serum free triiodothyronine (FT3) to free thyroxine (FT4) has been shown to be constant in healthy adults. However, this ratio has been found to be decreased in athyreotic adult patients on levothyroxine (L-T4) supplementation. In order to better evaluate thyroid-related pathologies in children as well as to establish a reference range, we investigated the FT3/FT4 ratio in a pediatric population. Furthermore, we evaluated this ratio in children with congenital hypothyroidism as well as those with central hypothyroidism. Methods A reference range for the FT3/FT4 ratio was obtained from 129 Japanese children (3–17 y) with idiopathic short stature who were designated as the ‘Control’ group. Patients with congenital hypothyroidism due to athyreosis or severe thyroid hypoplasia (designated as ‘A/Hypoplasia’), as well as patients with central hypothyroidism (‘Central’), were recruited from the institutional database. For each group, the mean FT3/FT4 ratio was obtained. Results In the Control group, the FT3/FT4 ratio was 3.03 ± 0.38 10−2 pg/ng (mean ± standard deviation) with no age or gender differences. A/Hypoplasia patients showed a significantly decreased mean FT3/FT4 ratio (2.17 ± 0.33, P < 0.001) compared to Control patients, with decreased FT3 and elevated FT4 levels. The Central group also showed a significantly decreased FT3/FT4 ratio (2.55 ± 0.45, P < 0.001) compared to the Control group, with decreased FT3 and equivalent FT4 levels. Conclusions The FT3/FT4 ratio appears to be constant between the ages of 3–17 y. Children on L-T4 due to congenital thyroid a/hypoplasia or central hypothyroidism have a decreased FT3/FT4 ratio compared to short normal children.
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Affiliation(s)
- Yuji Oto
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku Yokohama, 232-8555 Japan
| | - Koji Muroya
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku Yokohama, 232-8555 Japan
| | - Junko Hanakawa
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku Yokohama, 232-8555 Japan
| | - Yumi Asakura
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku Yokohama, 232-8555 Japan
| | - Masanori Adachi
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku Yokohama, 232-8555 Japan
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Ide A, Amino N, Kang S, Yoshioka W, Kudo T, Nishihara E, Ito M, Nakamura H, Miyauchi A. Differentiation of postpartum Graves' thyrotoxicosis from postpartum destructive thyrotoxicosis using antithyrotropin receptor antibodies and thyroid blood flow. Thyroid 2014; 24:1027-31. [PMID: 24400892 DOI: 10.1089/thy.2013.0585] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Postpartum thyroid dysfunction occurs in approximately 5-10% of women in the general population within one year of delivery. Differentiation of postpartum Graves' thyrotoxicosis (PPGr) from postpartum destructive thyrotoxicosis (PPDT) is essential because of the difference in treatment measures between the two. However, it is sometimes difficult because radioactive iodine uptake is contraindicated when patients are lactating. We examined the usefulness of determining the time of onset postpartum and measurement of antithyrotropin (anti-TSH) receptor antibodies and thyroid blood flow. METHODS Forty-two patients with newly developed thyrotoxicosis after delivery were examined: 18 had Graves' disease and 24 had destructive thyrotoxicosis. Serum free thyroxine (fT4), free triiodothyronine (fT3), and TSH were measured by chemiluminescent immunoassays. Anti-TSH receptor antibodies (TRAb), antithyroglobulin antibodies (TgAb), and antithyroid peroxidase antibodies (TPOAb) were measured by the Elecsys electrochemiluminescence immunoassay. Thyroid volume and blood flow (TBF) were measured quantitatively by color flow Doppler ultrasonography. RESULTS Onset of thyrotoxicosis was distributed from 2 to 12 months postpartum. Twelve (85.7%) of 14 patients who developed thyrotoxicosis at three months or earlier after delivery had PPDT. On the other hand, all 11 patients who developed thyrotoxicosis at 6.5 months or later had PPGr. All patients with PPGr had positive TRAb (14.9±14.9 IU/L, mean±standard deviation (SD)) and all patients with PPDT had negative TRAb (0.1±0.3 IU/L, p<0.0001). Fifteen (83.3%) of 18 PPGr patients had high TBF of more than 4.0% (8.9±4.4), and all PPDT patients had low TBF of <4.0% (1.6±1.0, p<0.0001). The fT3/fT4 ratio was higher in PPGr (64.0±23.9) than in PPDT (38.9±13.1, p<0.0002), but absolute values overlapped between the two. CONCLUSION Early onset of thyrotoxicosis postpartum was associated mainly with PPDT, and a late onset was suggestive of PPGr. Positive TRAb and high TBF >4.0% are indicators of postpartum onset of Graves' disease.
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Affiliation(s)
- Akane Ide
- Kuma Hospital , Center for Excellence in Thyroid Care, Kobe, Japan
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Nakajima T. Pitting type of pretibial edema in a patient with silent thyroiditis successfully treated by angiotensin II receptor blockade. Am J Case Rep 2014; 15:111-4. [PMID: 24665353 PMCID: PMC3962324 DOI: 10.12659/ajcr.889854] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 12/19/2013] [Indexed: 11/27/2022] Open
Abstract
Patient: Female, 56 Final Diagnosis: Thyroiditis – silent Symptoms: Palpitations • pretibial pitting edema • short of breath • sweating Medication: — Clinical Procedure: — Specialty: Endocrinology and Metabolic
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Zhao X, Chen L, Li L, Wang Y, Wang Y, Zhou L, Zeng F, Li Y, Hu R, Liu H. Peak systolic velocity of superior thyroid artery for the differential diagnosis of thyrotoxicosis. PLoS One 2012; 7:e50051. [PMID: 23166817 PMCID: PMC3500337 DOI: 10.1371/journal.pone.0050051] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 10/15/2012] [Indexed: 11/18/2022] Open
Abstract
AIM The differentiation of destruction-induced thyrotoxicosis and Graves' disease (GD) is of great importance for selection of proper therapy. Radioactive iodine uptake (RAIU) is the gold standard for differentiating these two conditions but its application has remained somewhat limited. Thyroid color Doppler flow sonography (CDFS) is a potential alternative of RAIU but more supporting evidence is warranted. In the present study, a standard operative procedure was developed to measure the mean peak systolic velocity of superior thyroid artery (STA-PSV) and evaluate its role in the differential diagnosis of thyrotoxicosis. METHODS A total of 135 patients with untreated thyrotoxicosis were enrolled into one retrospective study (GD, n = 103; thyroiditis, n = 32) and another prospective study recruited 169 patients (GD, n = 118; thyroiditis, n = 51). Thirty normal controls were also enrolled. Thyroid function, anti-TSH-receptor antibody (TRAb), RAIU, CFDS of thyroid and STA-PSV were performed for each patient. Receiver operator curve (ROC) was used to evaluate the diagnostic value of STA-PSV in a retrospective study so as to seek the optimal cutoff point. Then the cutoff point value was used to validate its diagnostic value in a prospective study and in another thyrotoxicosis population. RESULTS STA-PSV of GD was significantly higher than that of thyroiditis in both retrospective and prospective studies. The area under the ROC curve of mean STA-PSV was 0.8799 and 0.9447 in the retrospective and prospective studies respectively. If a mean STA-PSV cutoff point of 50.5 cm/s was set from the retrospective analysis for the prospective study, the sensitivity and specificity in distinguishing GD from thyroiditis were 81.04% and 96.08% respectively. Mean STA-PSV and TRAb had similar area under ROC. The coefficients of variation in STA-PSV measurement were lower than 10% for the euthyroid, thyroiditis and GD groups. CONCLUSIONS STA-PSV is a feasible supplement alternative of RAIU for differentiating the causes of thyrotoxicosis.
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Affiliation(s)
- Xiaolong Zhao
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lili Chen
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ling Li
- Department of Endocrinology, Zhongda Hospital of Southeast University, Nanjing, China
| | - Yao Wang
- Department of Endocrinology, Zhongda Hospital of Southeast University, Nanjing, China
| | - Yong Wang
- Department of Ultrasound, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Linuo Zhou
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Fangfang Zeng
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yiming Li
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- * E-mail: (YL) (YL); (HL) (HL)
| | - Renming Hu
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hong Liu
- Department of Endocrinology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- * E-mail: (YL) (YL); (HL) (HL)
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Abstract
Subacute, silent, and postpartum thyroiditis are temporary forms of thyroid dysfunction caused by thyroid gland inflammation. They classically present with a triphasic course: a brief period of thyrotoxicosis due to release of preformed thyroid hormone that lasts for 1 to 3 months, followed by a more prolonged hypothyroid phase lasting up to 6 months, and eventual return to a euthyroid state. However, the types and degree of thyroid dysfunction are variable in these disorders, and individual patients may present with mild or more severe cases of thyrotoxicosis alone, hypothyroidism alone, or both types of thyroid dysfunction.
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Affiliation(s)
- Mary H Samuels
- Division of Endocrinology, Diabetes and Clinical Nutrition, Oregon Health & Science University, Portland, OR 97239, USA.
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Kumar KH, Pasupuleti V, Jayaraman M, Abhyuday V, Ramasubba Rayudu B, Modi KD. Role of Thyroid Doppler in Differential Diagnosis of Thyrotoxicosis. Endocr Pract 2009; 15:6-9. [DOI: 10.4158/ep.15.1.6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Tagami T, Hagiwara H, Kimura T, Usui T, Shimatsu A, Naruse M. The incidence of gestational hyperthyroidism and postpartum thyroiditis in treated patients with Graves' disease. Thyroid 2007; 17:767-72. [PMID: 17651013 DOI: 10.1089/thy.2007.0003] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Graves' disease (GD) is one of the most common thyroid diseases that cause hyperthyroidism. Gestational transient thyrotoxicosis (GTT) is nonautoimmune hyperthyroidism that occurs in women with a normal pregnancy. Postpartum transient thyroiditis (PTT) is a destructive thyroiditis induced by autoimmune mechanism in the postpartum period. Hyperthyroidism due to GD usually tends to improve during the course of gestation and exacerbate after delivery. When the patient with treated GD presents with thyrotoxicosis in the early pregnancy or in the postpartum period, differential diagnosis of exacerbation of GD with GTT or PTT is important because the latter disorders are fundamentally transient. To evaluate the incidence of GTT and PTT in a GD population, we investigated the thyroid functions, thyrotropin receptor antibodies (TRAb), and human chorionic gonadotropin (hCG) during pregnancy and for 1 year after delivery for 39 pregnancies in 34 women with GD. The incidence of GTT was 26% (10/39) of pregnancies. The peak value of hCG in the GTT group ([23.7 +/- 14.5] x 10(4) IU/mL, n = 9) was significantly higher than that in the non-GTT group ([13.3 +/- 4.7] x 10(4) IU/mL, n = 19). The incidence of PTT was 44% (17/39) of deliveries. The free triiodothyronine (FT(3))/free thyroxine (FT(4)) ratio of the exacerbation group of GD (3.1 +/- 1.0, n = 10) at the time of thyrotoxicosis after delivery was significantly higher than that of the PTT group (2.5 +/- 0.4, n = 16). The peak TRAb value of the exacerbation group of GD (72.5 +/- 121.7 IU/L, n = 10) at the time of thyrotoxicosis after delivery was also significantly higher than that of the PTT group (1.4 +/- 0.8 IU/L, n = 16). In conclusion, the high peak value of hCG is valuable for suspecting GTT, and the high FT(3)/FT(4) ratio is valuable for suspecting recurrence in the patients with GD. In both situations, changes of TRAb were also valuable in differentiating the recurrence of GD from GTT or PTT.
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Affiliation(s)
- Tetsuya Tagami
- Clinical Research Institute, Division of Endocrinology and Metabolism, Kyoto Medical Center, National Hospital Organization, Kyoto 612-8555, Japan.
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Ota H, Amino N, Morita S, Kobayashi K, Kubota S, Fukata S, Kamiyama N, Miyauchi A. Quantitative measurement of thyroid blood flow for differentiation of painless thyroiditis from Graves' disease. Clin Endocrinol (Oxf) 2007; 67:41-5. [PMID: 17437515 DOI: 10.1111/j.1365-2265.2007.02832.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Differentiation between destruction-induced thyrotoxicosis and Graves' thyrotoxicosis is important for selection of proper therapy. It is, however, often difficult to make this distinction without measurement of radioactive iodine uptake. We investigated the possibility that assessment of thyroid blood flow would allow differentiation between the two entities. PATIENTS AND MEASUREMENTS One hundred and fourteen untreated patients with thyrotoxicosis (56 Graves' disease, 28 painless thyroiditis, 30 subacute thyroiditis) and 25 normal controls were examined. Serum levels of freeT4 (FT4), freeT3 (FT3) and TSH were measured by chemiluminescent immunoassay, and anti-TSH receptor antibodies (TSH-binding inhibitory immunoglobulin, TBII) were measured by enzyme-linked immunosorbent assay. Thyroid volume and blood flow (TBF) were measured quantitatively by ultrasonography. RESULTS TBF was significantly higher in Graves' disease (mean +/- 1SD: 14.9 +/- 6.4%, P < 0.0001) than in painless thyroiditis (0.8 +/- 0.5%), subacute thyroiditis (0.9 +/- 0.7%) and in normal controls (0.8 +/- 0.5%). All patients with Graves' disease had TBF values of more than 4% and all patients with painless thyroiditis and subacute thyroiditis had TBF values less than 4%. TBF values significantly correlated with values of radioactive iodine uptake (RAIU) either at 3 h (r = 0.492, P < 0.01) or 24 h (r = 0.762, P < 0.001) within the Graves' disease and painless thyroiditis groups. There was no relationship between TBF values and thyroid volumes or values of TBII in the Graves' disease group. All patients with Graves' disease had positive TBII of 15% or more. Three of 28 patients with painless thyroiditis and one of 30 patients with subacute thyroiditis had positive TBII. CONCLUSION TBF was quantitatively measured by power Doppler ultrasonography and was more effective than TBII for differentiation between destruction-induced thyrotoxicosis (painless or subacute thyroiditis) and Graves' thyrotoxicosis. TBF values of less than 4% in untreated thyrotoxic patients are laboratory signals of destruction-induced thyrotoxicosis and if these are determined, the radioactive iodine uptake test can be omitted for differential diagnosis of these two types of thyrotoxicosis.
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