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Yuan X, Mi X, Liu C, Zhang Z, Wei X, Wang D, Tan X, Xiang R, Xie W, Zhang Y. Ultrasensitive iodide detection in biofluids based on hot electron-induced reduction of p-Nitrothiophenol on Au@Ag core-shell nanoparticles. Biosens Bioelectron 2023; 235:115365. [PMID: 37196434 DOI: 10.1016/j.bios.2023.115365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/19/2023]
Abstract
Surveillance of iodine intake is important because either inadequate or excessive amount of iodine may lead to thyroid malfunctions. Herein, we report a method for fast iodide quantification based on a plasmonic hot electron-driven chemical reaction, which occurs on Au@Ag core-shell nanoparticles (NPs) coated with p-nitrothiophenol (PNTP) molecules. Upon resonant light illumination, hot electron-hole pairs are generated in the NPs. The hot holes capture iodide ions (I-) and form AgI which decomposes under light; while the hot electrons are shifted to the electron orbital (LUMO) of PNTP and trigger its reduction to p-aminothiophenol (PATP). By measuring characteristic surface-enhanced Raman spectroscopic (SERS) peaks of PNTP and PATP, the concentration of I- in water can be quantitatively determined, with a linear response in the 0.5-20 μM range and a detection limit of 0.30 μM. The Au@Ag nanosensor was then applied for I- detection in various biofluids including urine, serum and saliva, exhibiting superior detection sensitivity and high selectivity. This sensing assay requires a small sample volume of ∼10 μL and completes the entire detection process in ∼2 min, and therefore holds significant potential for application in point-of-care settings.
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Affiliation(s)
- Xinxin Yuan
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Xue Mi
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Chang Liu
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Zedong Zhang
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Xianfeng Wei
- Department of Otolaryngology Head and Neck, Tianjin First Central Hospital, Tianjin Institute of Otolaryngology, Tianjin, 300071, China
| | - Dekun Wang
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Xiaoyue Tan
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Rong Xiang
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Wei Xie
- Key Lab of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yuying Zhang
- School of Medicine, Nankai University, Tianjin, 300071, China.
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Shan Z, Li Y, Li Y, Wang H, Teng D, Teng X, Chong W, Shi X, Li J, Guo J, Lou Z, Fan C, Ding S, He L, Liu H, Pearce EN, Teng W. Changing iodine status and the incidence of thyroid disease in mainland China: A prospective 20-year follow-up study. Thyroid 2023. [PMID: 37082958 DOI: 10.1089/thy.2022.0505] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
BACKGROUND We aimed to assess the long-term effects of the transition in iodine status on the incidence of thyroid disorders over 20 years of follow up. METHODS The original prospective cohort study, started in 1999 (n=3,761), classified three regions in north China based on iodine status (insufficient iodine, more than adequate iodine, and excessive iodine, respectively) for 5 years. Subsequently, participants were followed for up to another 15 years to assess the long-term effects of shifts to adequate iodine on the incidence of thyroid disorders. Panshan transitioned from insufficient to adequate iodine and Huanghua transitioned from excessive to more than adequate iodine. Both regions were compared to Zhangwu, which iodine status changed from more than adequate to adequate iodine (from 214μg/L to 167.2μg/L). A cluster sampling method was used to select participants in the three regions. Participants completed questionnaires and underwent thyroid ultrasonography. Urinary iodine concentrations (UIC), serum thyroid hormone concentration, and thyroid antibodies were measured. RESULTS When the iodine status changed from insufficient to adequate (with the median UIC increasing from 88μg/L to 141.9μg/L), the incidence density of subclinical hyperthyroidism, positive thyroperoxidase antibody (TPOAb), positive thyroglobulin antibody (TgAb), and goiter decreased significantly (p<0.05 for all). Additionally, the cumulative incidence of subclinical hypothyroidism was significantly lower compared to the region where the iodine status changed from being more than adequate to adequate (1.9% vs. 6.0%, p<0.001). When the iodine status changed from excessive to more than adequate (median UIC from 634μg/L to 266.7μg/L), a significant decrease in the incidence density of subclinical hyperthyroidism, positive thyroid antibodies, positive TgAb, and goiter (p<0.05 for all), were also found. However, an increase in thyroid nodule incidence density (17.26 vs. 28.25 per 1000 person-years, p<0.001) was seen. CONCLUSIONS The incidence of thyroid disorders (except for thyroid nodules) stabilized or decreased among adults in the three communities from year 5 to year 15 of follow-up. Appropriate iodine fortification is safe and effective over the long term. Restoring urinary iodine to appropriate levels reduces population risk for thyroid disorders.
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Affiliation(s)
- Zhongyan Shan
- The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, 1Department of Endocrinology and Metabolism, No.155 Nanjing Bei Street, Hepig District, Shengyang 110001, China., Shengyang, China, 110001;
| | - Yushu Li
- The First Affiliated Hospital of China Medical University, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China, 110000
- United States;
| | - Yongze Li
- The First Hospital of China Medical University, Department of Endocrinology and Metabolism, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Shenyang, Liaoning, China, 110001
- United States;
| | - Haoyu Wang
- The First Hospital of China Medical University, 159407, Shenyang, Liaoning, China;
| | - Di Teng
- Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases,, Endocrinology and Metabolism, 1, Shenyang, Liaoning, China, 110000;
| | - Xiaochun Teng
- The Endocrine Institute , Department of Endocrinology and Metabolism, No 155, Nanjing Bei Street, Heping District, Shenyang City, Shenyang, China, 110001;
| | - Wei Chong
- The First Hospital of China Medical University, 159407, Shenyang, Liaoning, China;
| | - Xiaoguang Shi
- China Medical University, 26488, Nanjingnan Street, Shenyang, Liaoning, China, 110001;
| | - Jing Li
- Institute of endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, Department of Endocrinology and Metabolism, The First Affiliated Hospital of China Medical University, No. 155 in Nanjing North Street, Heping Distinct, Shenyang, China, 110001;
| | - Jiahui Guo
- The First Hospital of China Medical University, Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China, 110001;
| | - Zhe Lou
- China Medical University First Hospital, 159407, Endocrinology and Metabolism, Shenyang, China;
| | - Chenling Fan
- Key Laboratory of Endocrine Diseases, Liaoning Province, Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, China Medical University, Shenyang, Liaoning, China, Shenyang, China, 110001;
| | - Shuangning Ding
- Institute of endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases , The First Affiliated Hospital of China Medical University, Department of Endocrinology and Metabolism, Shenyang, China;
| | - Li He
- Zhangwu County Center for Disease Control and Prevention, Fuxin, China;
| | - Hua Liu
- Cangzhou Center for Disease Control and Prevention, Cangzhou, China;
| | - Elizabeth N Pearce
- Boston University Medical Center, Sectionof Endocrinology, Diabetes, and Nutrition, 88 East newton Street, eVANS 201, Boston, Massachusetts, United States, 02118;
| | - Weiping Teng
- the 1st hospital of China Medical University, Institute of Endocrinology, Department of Endocrinology and Metabolism, 155,Nanjing Bei Street, Heping District, Shenyang, Liaoning, China, 110001
- the first hospital of CMU, Department of endocrinology, 155,Nanjing Bei street, shenyang, Liaoning, China, 110001;
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Huang CJ, Lee LH, Cheng CP, Chen HS, Hwu CM, Tang KT, Shih CW, Yeh CC, Wang FF, Yang CC. Analytical validation of an inductively coupled plasma mass spectrometry method for urinary iodine concentration measurements in Taiwan. J Formos Med Assoc 2023:S0929-6646(23)00064-5. [PMID: 36878768 DOI: 10.1016/j.jfma.2023.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/04/2023] [Accepted: 02/21/2023] [Indexed: 03/07/2023] Open
Abstract
BACKGROUND Urinary iodine concentration (UIC) measured by Sandell-Kolthoff spectrophotometric method has been used in the Nutrition and Health Surveys in Taiwan but this method is time consuming and produces toxic waste from arsenic trioxide. The aim of this study was to develop and validate an inductively coupled plasma mass spectrometry (ICP-MS) system to determine UIC in Taiwan. METHODS Samples and iodine calibrators were diluted 100-fold into an aqueous solution containing Triton X-100, 0.5% ammonia solution, and tellurium (128Te) as an internal standard. Digestion prior to analysis was not necessary. Precision, accuracy, serial dilution, and recovery tests were performed. A total of 1243 urine samples covering a wide range of iodine concentrations were measured by both Sandell-Kolthoff method and ICP-MS. Passing-Bablok regression and Bland-Altman plots were used to compare values across methods. RESULTS The limit for detection and quantification by ICP-MS was 0.95 μg/L and 2.85 μg/L, respectively. The intra-assay and inter-assay coefficients were <10%, with a recovery range of 95%-105%. The results obtained by ICP-MS and the Sandell-Kolthoff method were highly correlated (Pearson's correlation: r = 0.996, 95% confidence interval [CI]: 0.9950-0.9961, p < 0.001). For UIC between 20 and 1000 μg/L, the y-intercept for the Passing-Bablok regression was -1.9 (95% CI: -2.5599 to -1.3500) and the slope was 1.01 (95% CI: 1.0000-1.0206). CONCLUSION This validated ICP-MS system can be used for measuring UIC.
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Affiliation(s)
- Chun-Jui Huang
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Lin-Hsuan Lee
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Food Safety and Health Risk Assessment, School of Pharmaceutical Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Cheng-Pin Cheng
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Harn-Shen Chen
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chii-Min Hwu
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Kam-Tsun Tang
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chiao-Wei Shih
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chang-Ching Yeh
- Department of Obstetrics & Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Obstetrics & Gynecology, Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Nurse-Midwifery and Women Health, College of Nursing, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Fan-Fen Wang
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medicine, Yangming Branch, Taipei City Hospital, Taipei, Taiwan.
| | - Chen-Chang Yang
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Environmental & Occupational Health Sciences, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Division of Clinical Toxicology & Occupational Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
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Castro GIMD, Falcão MC, Bigio JZD, Carvalho WBD. Thyroid dysfunction in infants with severe intestinal insufficiency: a case series. REVISTA PAULISTA DE PEDIATRIA : ORGAO OFICIAL DA SOCIEDADE DE PEDIATRIA DE SAO PAULO 2023; 41:e2021402. [PMID: 36921170 PMCID: PMC10014022 DOI: 10.1590/1984-0462/2023/41/2021402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/06/2022] [Indexed: 03/18/2023]
Abstract
OBJECTIVE The aim of this study was to describe the status of thyroid function in infants with severe intestinal dysfunction. CASE DESCRIPTION A retrospective study was conducted in a tertiary neonatal intensive care center, including newborns and infants with severe intestinal dysfunction, hospitalized between 2015 and 2020. From the medical records, the following data were collected: gestational age, birth weight, underlying pathology that led to intestinal dysfunction, hospital stay, presence of thyroid dysfunction, age from the onset of thyroid dysfunction, initial and maximum dose of levothyroxine replacement, and levothyroxine administration route and outcome. Seven children (0.76% of 914 hospitalizations) developed severe intestinal insufficiency: vanishing gastroschisis (42.9%), Berdon syndrome (28.5%), apple peel (14.3%), and OIES syndrome (14.3%) - omphalocele, exstrophy of cloaca, imperforate anus, and spina bifida. The mean gestational age was 33.3±1.6 weeks, the mean birth weight was 2,113.9±370.9 g, the median hospitalization was 420 days, and mortality was 42.9%. Of these seven cases, four (57.1%) presented thyroid dysfunction, evaluated by blood hormone dosages and the dose of levothyroxine replacement ranged from 25 to 100 μg/day, administered by gastric or rectal route. COMMENTS This series of cases draws attention to thyroid dysfunction (hypothyroidism) in children with severe intestinal insufficiency receiving exclusive parenteral nutrition for a prolonged period, whose etiology is iodine deficiency, because, in Brazil, micronutrient solutions added to parenteral nutrition do not contain iodine.
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Kaya E, Usta M, Emecen Ö, Yıldırmak S. Interference of preservatives on urinary iodine measurement by Sandell–Kolthoff method. Scandinavian Journal of Clinical and Laboratory Investigation 2022; 82:498-503. [DOI: 10.1080/00365513.2022.2107566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Elif Kaya
- Master of Science Degree Program in Medical Biochemistry, Institute of Health Sciences, Giresun University, Giresun, Turkey
| | - Murat Usta
- Department of Medical Biochemistry, Faculty of Medicine, Giresun University, Giresun, Turkey
| | - Ömer Emecen
- Department of Medical Biochemistry, Faculty of Medicine, Giresun University, Giresun, Turkey
| | - Sembol Yıldırmak
- Department of Medical Biochemistry, Faculty of Medicine, Giresun University, Giresun, Turkey
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陈 永, 吕 庆, 吴 宇, 徐 师, 万 恒, 钟 莉, 曹 洪, 张 雨, 童 南. [Iodine Nutritional Status and Prevalence of Thyroid Disorders among Adults in Chengdu]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2022; 53:649-655. [PMID: 35871736 PMCID: PMC10409461 DOI: 10.12182/20220760505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Indexed: 06/15/2023]
Abstract
Objective To investigate the prevalence of thyroid disorders, iodine nutritional status and relevant risk factors among adults in Chengdu city on the basis of two population-based surveys, one conducted between 2016 and 2017 and the other, between 2019 and 2020, and to provide references for making health-related administrative decisions. Methods Two population-based sampling surveys were conducted. The first one was done between October 2016 and December 2017, using stratified cluster random sampling to select subjects from 2 urban and 2 rural communities in Chengdu. Then, between December 2019 and February 2020, sequential cluster sampling was used to select subjects from communities in the peripheral regions of Longquanyi District, Chengdu. Both surveys covered natural populations of people who were 18 or older and who met the inclusion criteria. In the first survey, questionnaires, physical examination, thyroid ultrasound, and examinations of serum thyroid biochemical markers and urine iodine were performed, while in the second survey, only questionnaire concerning thyroid disorders and physical examination were performed. Statistical analysis of the nutritional status of iodine, the prevalence of thyroid disorders, and potential risk factor was conducted. Results A total of 1859 subjects were enrolled for the first survey and 16152 for the second. According to the results of the first survey, the median urine iodine concentration was 172.10 μg/L, and the group with adequate or more than adequate iodine accounted for more than 60% of the surveyed population. The prevalence of thyroid disorders was found to be 0.48% for overt hyperthyroidism, 0.43% for subclinical hyperthyroidism, 0.43% for Grave's disease, 1.34% for overt hypothyroidism, 16.62% for subclinical hypothyroidism, 16.73% for positive thyroid antibody, 12.96% for TPOAb positive, 10.06% for TGAb positive, 0.81% for goiter, 14.85% for single nodule, 14.42% for multi-nodules, and 29.26% for thyroid nodules. Excess iodine is a risk factor for subclinical hypothyroidism ( OR=1.50, 95% confidence interval [ CI]: 1.07-2.10, P<0.05), and iodine deficiency is a risk factor for multiple thyroid nodules ( OR=1.45, 95% CI: 1.02-2.05, P<0.05). The total prevalence of hyperthyroidism, hypothyroidism and Hashimoto's thyroiditis in the two surveys was 6.58% and 5.95%, respectively, showing no significant difference. The second survey lacked accurate data on thyroid nodules. Conclusion The iodine nutritional status of adults in Chengdu in recent years was appropriate. The total prevalence of hyperthyroidism, hypothyroidism and Hashimoto's thyroiditis remained stable, while that of thyroid nodule increased in recent years. We should continue with the implementation of the universal salt iodization policy and reinforce efforts in monitoring. Furthermore, we should make an active effort to look into the etiology of thyroid nodules.
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Affiliation(s)
- 永连 陈
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 糖尿病与代谢研究中心 糖尿病与胰岛移植研究室 (成都 610041)Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 庆国 吕
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 糖尿病与代谢研究中心 糖尿病与胰岛移植研究室 (成都 610041)Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 宇超 吴
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 糖尿病与代谢研究中心 糖尿病与胰岛移植研究室 (成都 610041)Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 师师 徐
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 糖尿病与代谢研究中心 糖尿病与胰岛移植研究室 (成都 610041)Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 恒 万
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 莉 钟
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 洪义 曹
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 雨薇 张
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 糖尿病与代谢研究中心 糖尿病与胰岛移植研究室 (成都 610041)Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 南伟 童
- 四川大学华西医院 内分泌代谢科 (成都 610041)Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 糖尿病与代谢研究中心 糖尿病与胰岛移植研究室 (成都 610041)Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu 610041, China
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The Impact of Iodine Concentration Disorders on Health and Cancer. Nutrients 2022; 14:nu14112209. [PMID: 35684009 PMCID: PMC9182735 DOI: 10.3390/nu14112209] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 01/27/2023] Open
Abstract
Iodine deficiency is an ongoing problem. The implementation of salt iodization has significantly reduced the effects of iodine deficiency worldwide in recent years, and the remaining iodine deficiency is mild to moderate. Iodine is an essential substrate for the synthesis of thyroid hormones in the thyroid gland. It can also act as an antioxidant, as well as an anti-proliferative and pro-apoptotic factor. Pregnant women, breastfeeding women, and children are particularly affected by iodine deficiency. It leads to thyroid diseases and metabolic and developmental disorders, as well as cancer. However, an excessive iodine intake may, similarly to iodine deficiency, lead to the development of goiter, and toxic amounts of iodine can lead to thyroiditis, hyperthyroidism, and hypothyroidism, and even to the development of papillary thyroid cancer. Correcting iodine deficiency potentially reduces the chance of developing malignancies. Additional research is needed to better understand both the effect of iodine on carcinogenesis and the clinical outcome of iodine deficiency compensation on cancer patients' prognosis. The upcoming public health challenge appears to be reducing salt consumption, which could result in a lower iodine intake. Thus, an iodine enrichment vehicle other than salt could be considered if salt iodine levels are not increased to compensate, and urine iodine levels should be monitored more frequently.
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Li Y, Shan Z, Teng W. Effect of the transition from more than adequate iodine to adequate iodine on national changes in the prevalence of thyroid disorders: repeat national cross-sectional surveys in China. Eur J Endocrinol 2021; 186:115-122. [PMID: 34762596 PMCID: PMC8679845 DOI: 10.1530/eje-21-0975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 11/11/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Longitudinal studies have investigated the effects of changing iodine status on thyroid disorders, but the effect of a transition from more than adequate iodine to adequate iodine on national changes in prevalence adjusted for changing risk factors remains unclear. DESIGN Two repeat nationwide surveys were conducted from 2009-2010 to 2015-2017 to assess changes in thyroid disorder prevalence and iodine status in China. METHODS A multistage stratified random sampling method was used to obtain a nationally representative sample of urban adults aged 18 and older in mainland China in 2009 (n = 14 925) and 2015 (n = 12 553). Changes in thyroid disorder prevalence, urinary iodine concentration (UIC), and thyroid-stimulating hormone (TSH) levels were assessed. Logistic regression models were used to examine changes in prevalence over time. RESULTS The median UIC decreased significantly from 219.7 to 175.9 μg/L (P < 0.0001). The weighted prevalence of overt hyperthyroidism, subclinical hyperthyroidism, Graves' disease, and goitre decreased between 2009 and 2015 in the overall population (P < 0.05 for all). Despite no significant changes in subclinical hyperthyroidism or hypothyroidism or anti-thyroid peroxidase or anti-thyroglobulin antibody positivity prevalence, a significant increase in thyroid nodule prevalence (P < 0.0001) was found in the overall population. The 2.5th TSH percentile increased by 0.15 mIU/L (95% CI: 0.01 to 0.30 mIU/L, P = 0.04) from 2009 to 2015. CONCLUSIONS With the iodine status transition from more than adequate to adequate, thyroid disorder (except for thyroid nodules) prevalence remained stable or even decreased after adjusting for confounding factors among adults in mainland China between 2009 and 2015. Additional studies are needed to explore the reasons for the increased thyroid nodule prevalence.
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Affiliation(s)
- Yongze Li
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zhongyan Shan
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Correspondence should be addressed to Z Shan or W Teng; or
| | - Weiping Teng
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Correspondence should be addressed to Z Shan or W Teng; or
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HPLC Analysis of the Urinary Iodine Concentration in Pregnant Women. Molecules 2021; 26:molecules26226797. [PMID: 34833891 PMCID: PMC8619590 DOI: 10.3390/molecules26226797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/04/2021] [Accepted: 11/06/2021] [Indexed: 11/16/2022] Open
Abstract
Iodine is an essential component for fetal neurodevelopment and maternal thyroid function. Urine iodine is the most widely used indicator of iodine status. In this study, a novel validated ion-pair HPLC-UV method was developed to measure iodine concentration in clinical samples. A sodium thiosulfate solution was added to the urine sample to convert the total free iodine to iodide. Chromatographic separation was achieved in a Pursuit XRs C8 column. The mobile phase consisted of acetonitrile and a water phase containing 18-crown-6-ether, octylamine and sodium dihydrogen phosphate. Validation parameters, such as accuracy, precision, limits of detection and quantification, linearity and stability, were determined. Urinary samples from pregnant women were used to complete the validation and confirm the method's applicability. In the studied population of 93 pregnant women, the median UIC was lower in the group without iodine supplementation (117 µg/L, confidence interval (%CI): 95; 138) than in the supplement group (133 µg/L, %CI: 109; 157). In conclusion, the newly established ion-pair HPLC-UV method was adequately precise, accurate and fulfilled validation the criteria for analyzing compounds in biological fluids. The method is less complicated and expensive than other frequently used assays and permits the identification of the iodine-deficient subjects.
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Wang Y, He D, Fu C, Dong X, Jiang F, Su M, Xu Q, Huang P, Wang N, Chen Y, Jiang Q. Thyroid Function Changes and Pubertal Progress in Females: A Longitudinal Study in Iodine-Sufficient Areas of East China. Front Endocrinol (Lausanne) 2021; 12:653680. [PMID: 34046012 PMCID: PMC8146907 DOI: 10.3389/fendo.2021.653680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/06/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The onset of puberty is influenced by thyroid function, and thyroid hormones (THs) fluctuate substantially during the period of pubertal development. However, it needs to be further clarified how THs change at specific puberty stages and how it influences pubertal development in girls. So far, longitudinal data from China are scarce. METHODS A cohort study was conducted among girls during puberty in iodine-sufficient regions of East China between 2017 to 2019. Serum thyroid stimulating hormone (TSH), free triiodothyronine (FT3), and free thyroxine (FT4) were determined for each participant. Thyroid homeostasis structure parameters (THSPs), including the ratio of FT4 to FT3 (FT4/FT3), Jostel's TSH index (TSHI), and thyroid feedback quantile-based index (TFQI), were calculated. Puberty category scores (PCS), calculated based on the Puberty Development Scale (PDS), was used to assess the stage of puberty. Girls were grouped into three categories according to PCS changes (△PCS) and six categories according puberty stage (BPFP: pre-pubertal at both baseline and follow-up; BPFL: pre-pubertal at baseline and late-pubertal at follow-up, respectively; BPFT: pre-pubertal at baseline and post-pubertal at follow-up, respectively; BLFL: late-pubertal at both baseline and follow-up; BLFT: late-pubertal at baseline and post-pubertal at follow-up, respectively; BTFT: post-pubertal at both baseline and follow-up). Multiple linear regression analyses were used to evaluate the associations of THs changes with pubertal progress. RESULTS The levels of serum TSH and FT3 decreased while serum FT4 increased during the study period (P<0.001). In multiple linear regression analyses, after adjustment for covariables, FT3 decreased by an additional 0.24 pmol/L (95% CI: -0.47 to -0.01) in the higher △PCS group than the lower △PCS group. Compared with the BLFL group, the BPFT group showed an additional decline in FT3 (β= -0.39 pmol/L, 95%CI: -0.73 to -0.04), the BTFT group showed a lower decline in TSH (β=0.50 mU/L, 95% CI: 0.21 to 0.80) and a lower decline in TSHI (β=0.24, 95%CI: 0.06 to 0.41), respectively. There was no association of △FT4 or △TFQI with △PCS or the puberty pattern. CONCLUSIONS Serum TSH and FT3 decreased while serum FT4 increased among girls during puberty. Both the initial stage and the velocity of pubertal development were related to thyroid hormone fluctuations.
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Affiliation(s)
- Yingying Wang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - Dandan He
- Department of School Hygiene, Minhang District Center for Disease Control and Prevention, Shanghai, China
| | - Chaowei Fu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - Xiaolian Dong
- Department of Chronic Disease Control and Prevention, Deqing County Center for Disease Control and Prevention, Huzhou, China
| | - Feng Jiang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - Meifang Su
- Department of Chronic Disease Control and Prevention, Yuhuan City Center for Disease Control and Prevention, Taizhou, China
| | - Qian Xu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - Peixin Huang
- Department of Chronic Disease Control and Prevention, Haimen City Center for Disease Control and Prevention, Nantong, China
| | - Na Wang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
- *Correspondence: Na Wang,
| | - Yue Chen
- School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Qingwu Jiang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
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