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Yang X, Liu C, Liu Y, He Z, Li J, Li Y, Wu Y, Manyande A, Feng M, Xiang H. The global burden, trends, and inequalities of individuals with developmental and intellectual disabilities attributable to iodine deficiency from 1990 to 2019 and its prediction up to 2030. Front Nutr 2024; 11:1366525. [PMID: 38953045 PMCID: PMC11215058 DOI: 10.3389/fnut.2024.1366525] [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] [Received: 02/21/2024] [Accepted: 06/04/2024] [Indexed: 07/03/2024] Open
Abstract
Objective The objective of this study was to assess the global burden of disease for developmental and intellectual disabilities caused by iodine deficiency from 1990 to 2019. Methods Using data from the global burden of disease (GBD) 2019, we conducted a cross-country inequity analysis to examine the worldwide burden of developmental and intellectual disabilities caused by the issue of iodine deficiency from 1990 to 2019. Absolute and relative inequality were assessed by the slope index of inequality and the concentration index, respectively. After summarising the latest evidence, we also projected the age-standardized prevalence and years lived with disability (YLD) rates up to 2030 using the BAPC and INLA packages in R statistical software. Results In 2019, the global age-standardized prevalence and YLD rates for developmental and intellectual disabilities due to iodine deficiency were 22.54 per 100,000 population (95% UI 14.47 to 29.23) and 4.12 per 100,000 population (95% UI 2.25 to 6.4), respectively. From 1990 to 2019, the age-standardized prevalence and YLD rates of developmental and intellectual disabilities due to iodine deficiency decreased significantly. Geographic distribution showed that areas with lower socio-demographic indices (SDI) were the most affected. The correlation between higher SDI and lower prevalence highlights the role of economic and social factors in the prevalence of the disease. Cross-national inequity analysis shows that disparities persist despite improvements in health inequalities. In addition, projections suggest that the disease burden may decline until 2030. Conclusion This research underscores the necessity for targeted interventions, such as enhancing iodine supplementation and nutritional education, especially in areas with lower SDI. We aim to provide a foundation for policymakers further to research effective preventative and potential alternative treatment strategies.
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Affiliation(s)
- Xuesong Yang
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cheng Liu
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanbo Liu
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhigang He
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Juan Li
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yijing Li
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanqiong Wu
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Anne Manyande
- School of Human and Social Sciences, University of West London, London, United Kingdom
| | - Maohui Feng
- Hubei Key Laboratory of Tumor Biological Behaviors, Department of Gastrointestinal Surgery, Clinical Medical Research Center of Peritoneal Cancer of Wuhan, Clinical Cancer Study Center of Hubei Provence, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hongbing Xiang
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology and Pain Medicine, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, Wuhan, China
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Liu L, Luo P, Wen P, Xu P. Effects of selenium and iodine on Kashin-Beck disease: an updated review. Front Nutr 2024; 11:1402559. [PMID: 38757132 PMCID: PMC11096467 DOI: 10.3389/fnut.2024.1402559] [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] [Received: 03/17/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
Kashin-Beck disease (KBD) is an endochondral osteogenesis disorder characterised by epiphysis damage and secondary deformable arthropathy induced by multiple external factors, among which selenium (Se) and iodine deficiency are important influencing factors. Iodine deficiency is usually accompanied by a low Se content in the soil in the KBD areas of China. Se can reverse oxidative damage to chondrocytes. In addition, Se is related to the bone conversion rate and bone mineral density. Low Se will hinder growth and change bone metabolism, resulting in a decrease in the bone conversion rate and bone mineral density. Thyroid hormone imbalance caused by thyroid dysfunction caused by iodine deficiency can damage bone homeostasis. Compared with Se deficiency alone, Se combined with iodine deficiency can reduce the activity of glutathione peroxidase more effectively, which increases the vulnerability of chondrocytes and other target cells to oxidative stress, resulting in chondrocyte death. Clinical studies have shown that supplementation with Se and iodine is helpful for the prevention and treatment of KBD.
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Affiliation(s)
| | | | | | - Peng Xu
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, China
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Kissock KR, Garrett GS, Mkambula P, Bullen JD, Trieu K, Fisher LJ, Paige E, Gary MS, Neal B. Switching the World's Salt Supply-Learning from Iodization to Achieve Potassium Enrichment. Adv Nutr 2024; 15:100148. [PMID: 37977326 PMCID: PMC10730351 DOI: 10.1016/j.advnut.2023.100148] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 10/23/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023] Open
Abstract
Sodium is an essential dietary component, but excess sodium intake can lead to high blood pressure and an increased risk of cardiovascular disease. Many national and international bodies, including the World Health Organization, have advocated for population-wide sodium reduction interventions. Most have been unsuccessful due to inadequate sodium reduction by food industry and difficulties in persuading consumers to add less salt to food. Recent research highlights potassium-enriched salt as a new, feasible, acceptable, and scalable approach to reducing the harms caused by excess sodium and inadequate potassium consumption. Modeling shows that a global switch from regular salt to potassium-enriched salt has the potential to avert millions of strokes, heart attacks, and premature deaths worldwide each year. There will be many challenges in switching the world's salt supply to potassium-enriched salt, but the success of universal salt iodization shows that making a global change to the manufacture and use of salt is a tractable proposition. This in-depth review of universal salt iodization identified the importance of a multisectoral effort with strong global leadership, the support of multilateral organizations, engagement with the salt industry, empowered incountry teams, strong participation of national governments, understanding the salt supply chain, and a strategic advocacy and communication plan. Key challenges to the implementation of the iodization program were costs to government, industry, and consumers, industry concerns about consumer acceptability, variance in the size and capabilities of salt producers, inconsistent quality control, ineffective regulation, and trade-related regulatory issues. Many of the opportunities and challenges to universal salt iodization will likely also be applicable to switching the global salt supply to iodized and potassium-enriched salt.
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Affiliation(s)
- Katrina R Kissock
- The George Institute for Global Health, University of New South Wales, New South Wales, Australia.
| | | | | | - James D Bullen
- The George Institute for Global Health, University of New South Wales, New South Wales, Australia
| | - Kathy Trieu
- The George Institute for Global Health, University of New South Wales, New South Wales, Australia
| | - Laura J Fisher
- The George Institute for Global Health, University of New South Wales, New South Wales, Australia
| | - Ellie Paige
- The George Institute for Global Health, University of New South Wales, New South Wales, Australia; National Centre for Epidemiology and Population Health, The Australian National University, Canberra, Australian Capital Territory, Australia
| | | | - Bruce Neal
- The George Institute for Global Health, University of New South Wales, New South Wales, Australia; School of Public Health, Imperial College London, United Kingdom
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Wu Z, Li M, Liu J, Xie F, Chen Y, Yang S, Li X, Wu Y. Association study of urinary iodine concentrations and coronary artery disease among adults in the USA: National Health and Nutrition Examination Survey 2003-2018. Br J Nutr 2023; 130:2114-2122. [PMID: 37424297 PMCID: PMC10657749 DOI: 10.1017/s0007114523001277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 07/11/2023]
Abstract
Iodine is a vital trace element in the human body and is associated with several important coronary artery disease (CAD) risk factors. We aimed to explore the correlation between urinary iodine concentration (UIC) and CAD. Data from 15 793 US adults in the National Health and Nutrition Examination Survey (2003-2018) were analysed. We conducted multivariable logistic regression models and fitted smoothing curves to study the correlation between UIC and CAD. Furthermore, we performed subgroup analysis to investigate possible effect modifiers between them. We found a J-shaped association between UIC and CAD, with an inflection point at Lg UIC = 2·65 μg/l. This result indicated a neutral association (OR 0·89; 95 % CI 0·68, 1·16) between UIC and CAD as Lg UIC < 2·65 μg/l, but the per natural Lg [UIC] increment was OR 2·29; 95 % CI 1·53, 3·43 as Lg UIC ≥ 2·65 μg/l. An interaction between diabetes and UIC might exist. The increase in UIC results in an increase in CAD prevalence (OR 1·84, 95 % CI 1·32, 2·58) in diabetes but results in little to no difference in non-diabetes (OR 0·98, 95 % CI 0·77, 1·25). The J-shaped correlation between UIC and CAD and the interaction between diabetes and UIC should be confirmed in a prospective study with a series of UIC measurements. If excessive iodine precedes CAD, then this new finding could guide clinical practice and prevent iodine deficiency from being overcorrected.
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Affiliation(s)
- Zhijian Wu
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Meng Li
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Jiandi Liu
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Feng Xie
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Yang Chen
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Shuai Yang
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Xiaozhong Li
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
| | - Yanqing Wu
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, 330006Nanchang, Jiangxi, People’s Republic of China
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Prasad UV, Vastrad P, Chaudhuri S, Kirte R, Peerapur BV, Kumar GA, Gururaj NA, Patil K, Yuvaraj BY, Mane V, Itagi V, Kesari PM, Chillargi C, Goud TG, Sameena M, Dorle AS, Patil SK, Mallapur AS, Nair AM, Roy S. Prevalence of goitre and iodine deficiency among school children (6-12 years) in rural areas of North Karnataka, India: A cross-sectional survey, 2016-19. J Family Med Prim Care 2023; 12:2090-2096. [PMID: 38024948 PMCID: PMC10657037 DOI: 10.4103/jfmpc.jfmpc_2021_22] [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: 10/16/2022] [Revised: 04/07/2023] [Accepted: 06/20/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Iodine deficiency disorders (IDD) have remained an unresolved public health problem in India. In this survey, we have estimated the prevalence of IDD among 6-12 years of school children in rural areas of north Karnataka, India and estimated the prevalence of low iodine content (<15 ppm) in salt at the household level and urine iodine excretion in this population. Material and Methods In this cross-sectional survey, we recruited 16,827 children between 6 and 12 years of age through multistage sampling from six districts. Goitre was examined clinically for all children. Household-level salt iodine estimation and urinary iodine estimation were carried out among a subset of the participants. Results Overall prevalence of goitre was 17.1% (95% CI: 16.5, 17.7). Out of this, 76.7% (n = 2116) had Grade-1 goitre, and 23.7% (n = 656) had Grade-2 goitre. The prevalence of goitre was higher among females (17.9%, vs. male 16.4%, P < 0.05). The prevalence of low iodine content (<15 ppm) in salt was 48.5% (95%CI: 46.7, 50.3). The overall median iodine excretion in urine was 85 μg/L (IQR: 60-150 μg/L). In total, 37.2% (n = 601) had mild iodine deficiency, 5.2% (n = 84) had moderate deficiency, and 10.1% (n = 163) had severe deficiency. All parameters showed high inter- and intradistrict variations. Conclusion North Karnataka has a high goitre prevalence. Low use of iodized salt can be a major reason for the high prevalence of the condition. Ensuring the availability of iodized salt in this region and periodic surveillance to measure the impact of the programme should be the priority in this region.
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Affiliation(s)
- U Venkateswara Prasad
- Department of Health Research (Govt. of India), Model Rural Health Research Unit, Sirwar, Raichur, Karnataka, India
| | - Phaniraj Vastrad
- Department of Health Research (Govt. of India), Model Rural Health Research Unit, Sirwar, Raichur, Karnataka, India
| | - Sirshendu Chaudhuri
- National Institute of Epidemiology, Indian Council of Medical Research (ICMR), Ayapakkam, Chennai, Tamil Nadu, India
| | - Rahul Kirte
- Department of Community Medicine, Raichur Institute of Medical Sciences and District Hospital, Raichur, Karnataka, India
| | - Basavraj V. Peerapur
- Department of Microbiology, Raichur Institute of Medical Sciences and District Hospital, Raichur, Karnataka, India
| | - G Ajay Kumar
- Department of Community Medicine, Gulbarga Institute of Medical Sciences, Kalaburgi, Karnataka, India
| | - NA Gururaj
- Department of Community Medicine, Gulbarga Institute of Medical Sciences, Kalaburgi, Karnataka, India
| | - Kavitha Patil
- Department of Ophthalmology, Gulbarga Institute of Medical Sciences, Kalaburgi, Karnataka, India
| | - BY Yuvaraj
- Department of Community Medicine, Koppal Institute of Medical Sciences, Koppal, Karnataka, India
| | - Vijaykumar Mane
- Department of Community Medicine, Koppal Institute of Medical Sciences, Koppal, Karnataka, India
| | - Vijayanath Itagi
- Department of Physiology, Koppal Institute of Medical Sciences, Koppal, Karnataka, India
| | - Pallavi M. Kesari
- Department of Community Medicine, Bidar Institute of Medical Sciences, Bidar, Karnataka, India
| | - Chandrakanth Chillargi
- Department of Microbiology, Bidar Institute of Medical Sciences, Bidar, Karnataka, India
| | - T. Gangadhara Goud
- Department of Community Medicine, Vijaynagara Institute of Medical Sciences, Ballari, Karnataka, India
| | - M Sameena
- Department of Community Medicine, Vijaynagara Institute of Medical Sciences, Ballari, Karnataka, India
| | - AS Dorle
- Department of Community Medicine, S Nijalingappa Medical College, Bagalkot, Karnataka, India
| | - Shrinivas K. Patil
- Department of Community Medicine, S Nijalingappa Medical College, Bagalkot, Karnataka, India
| | - Ashoka S. Mallapur
- Department of Surgery, S Nijalingappa Medical College, Bagalkot, Karnataka, India
| | - Anish Mohan Nair
- Department of Health Research (Govt. of India), Model Rural Health Research Unit, Sirwar, Raichur, Karnataka, India
| | - Subarna Roy
- Department of Health Research (Govt. of India), Model Rural Health Research Unit, Sirwar, Raichur, Karnataka, India
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Muluneh AG, Merid MWM, Kassa GM. Hotspots of un-iodized salt availability among Ethiopian households, evidence from the national survey data. JOURNAL OF HEALTH, POPULATION, AND NUTRITION 2023; 42:20. [PMID: 36927806 PMCID: PMC10021937 DOI: 10.1186/s41043-023-00359-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 03/01/2023] [Indexed: 03/18/2023]
Abstract
BACKGROUND Universal salt iodization was started before decades but there are communities using the un-iodized salt till now. More than one-tenth of the Ethiopian community uses un-iodized salt. OBJECTIVE This study aimed to identify the hotspots and associate factors of un-iodized salt availability in Ethiopia based on Ethiopian national household survey data. METHODS We conducted an in-depth analysis of the Ethiopian Demographic and Health Survey 2016 data. A total of 15,567 households were included in the final analysis. We cleaned and weighed the data using Stata version 16 software and descriptive outputs were reported in graphs and tables. We computed the weighted prevalence of un-iodized salt and prepared it for spatial analysis. Global-level spatial autocorrelation, hotspot analysis using the Getis-Ord Gi* statistics, and spatial interpolation using empirical Bayesian interpolation were executed using ArcGIS 10.3 to predict the magnitude of un-iodized salt at the national level. The binary logistics regression model was used to identify the contributing factors of un-iodized salt utilization. Model goodness of fit was tested with Hosmer and Lemeshow goodness-of-fit test (P = 0.96). Finally, the adjusted odds ratio (AOR) with 95% CI was reported to identify significant factors. RESULTS The magnitude of un-iodized salt availability was 14.19% (95% CI: 13.65, 14.75) among Ethiopian households. Un-iodized salt hotspots were found in Afar, Somalia, and Benishangul Gumuz regions. Compared to poorest wealth index: poorer (AOR = 0.55, 95% CI: 0.48, 0.64), middle (AOR = 0.51, 95% CI: 0.44, 0.60), richer (AOR = 0.55, 95% CI: 0.47, 0.64), and richest (AOR = 0.61, 95% CI: 0.50, 0.75); compared to uneducated household head: heads with secondary (AOR = 0.72, 95% CI: 0.60, 0.67) and above secondary (AOR = 0.54, 95% CI: 0.43, 0.67) education reduced the odds of un-iodized salt viability, while households living in highland (AOR = 1.16, 95% CI: 1.05, 1.29) had increased the odds of un-iodized salt availability. CONCLUSION More than a tenth of the households in Ethiopia uses un-iodized salt. Hotspots of un-iodized salt availability were found in Somali and Afar regions of Ethiopia. Better wealth index and education of the household heads reduces the odds of un-iodized salt availability while living in a high altitude above 2200 m increases the odds of un-iodized salt availability in Ethiopia.
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Affiliation(s)
- Atalay Goshu Muluneh
- Department of Epidemiology and Biostatistics, Institute of Public Health, College of Medicine and Health Sciences, University of Gondar, P.O. Box 196, Gondar, Ethiopia.
| | - Mehari W Mariam Merid
- Department of Epidemiology and Biostatistics, Institute of Public Health, College of Medicine and Health Sciences, University of Gondar, P.O. Box 196, Gondar, Ethiopia
| | - Getahun Molla Kassa
- Department of Epidemiology and Biostatistics, Institute of Public Health, College of Medicine and Health Sciences, University of Gondar, P.O. Box 196, Gondar, Ethiopia
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Iodine Intake and Related Cognitive Function Impairments in Elementary Schoolchildren. BIOLOGY 2022; 11:biology11101507. [PMID: 36290411 PMCID: PMC9599038 DOI: 10.3390/biology11101507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/03/2022] [Accepted: 10/12/2022] [Indexed: 11/21/2022]
Abstract
Iodine deficiency, the most common cause of preventable mental impairment worldwide, has been linked to poorer intellectual function in several studies. However, to our knowledge, no studies have been performed in moderate iodine-deficient schoolchildren using the complete form of Wechsler Intelligence Scale for Children (WISC-III; Portuguese version). The main purpose of this study was to ascertain whether moderate iodine deficiency would affect the cognitive function of schoolchildren (7-11 years old; 3rd and 4th grades). Raven's Colored Progressive Matrices (CPM; Portuguese version) were used for measuring the intelligence quotient (IQ) of the total population (n = 256; median UIC = 66.2 μg/L), and the WISC-III was used to study two selected subgroups: one moderately iodine-deficient (n = 30) and the other with adequate iodine intake (n = 30). WISC-III was shown to be the prime instrument for cognitive function assessment among moderate iodine-deficient schoolchildren; this subgroup had a Full-Scale IQ 15.13 points lower than the adequate iodine intake subgroup, with a magnitude effect of d = 0.7 (p = 0.013). Significant differences were also registered in 6 of the 13 Verbal-Performance IQ subtests. Moderate iodine deficiency has a substantial impact on mental development and cognitive functioning of schoolchildren, with significant impairment in both Performance IQ and Verbal IQ spectrum, adversely impacting their educational performance.
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Lymberopoulos E, Gentili GI, Budhdeo S, Sharma N. COVID-19 severity is associated with population-level gut microbiome variations. Front Cell Infect Microbiol 2022; 12:963338. [PMID: 36081770 PMCID: PMC9445151 DOI: 10.3389/fcimb.2022.963338] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/03/2022] [Indexed: 11/29/2022] Open
Abstract
The human gut microbiome interacts with many diseases, with recent small studies suggesting a link with COVID-19 severity. Exploring this association at the population-level may provide novel insights and help to explain differences in COVID-19 severity between countries. We explore whether there is an association between the gut microbiome of people within different countries and the severity of COVID-19, measured as hospitalisation rate. We use data from the large (n = 3,055) open-access gut microbiome repository curatedMetagenomicData, as well as demographic and country-level metadata. Twelve countries were placed into two groups (high/low) according to COVID-19 hospitalisation rate before December 2020 (ourworldindata.com). We use an unsupervised machine learning method, Topological Data Analysis (TDA). This method analyses both the local geometry and global topology of a high-dimensional dataset, making it particularly suitable for population-level microbiome data. We report an association of distinct baseline population-level gut microbiome signatures with COVID-19 severity. This was found both with a PERMANOVA, as well as with TDA. Specifically, it suggests an association of anti-inflammatory bacteria, including Bifidobacteria species and Eubacterium rectale, with lower severity, and pro-inflammatory bacteria such as Prevotella copri with higher severity. This study also reports a significant impact of country-level confounders, specifically of the proportion of over 70-year-olds in the population, GDP, and human development index. Further interventional studies should examine whether these relationships are causal, as well as considering the contribution of other variables such as genetics, lifestyle, policy, and healthcare system. The results of this study support the value of a population-level association design in microbiome research in general and for the microbiome-COVID-19 relationship, in particular. Finally, this research underscores the potential of TDA for microbiome studies, and in identifying novel associations.
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Affiliation(s)
- Eva Lymberopoulos
- The Sharma Lab, Department of Clinical and Movement Neurosciences, Queen Square Institute of Neurology, University College London, London, England
- Centre for Doctoral Training in AI-London enabled Healthcare Systems, Institute of Health Informatics, University College London, London, England
| | - Giorgia Isabella Gentili
- The Sharma Lab, Department of Clinical and Movement Neurosciences, Queen Square Institute of Neurology, University College London, London, England
| | - Sanjay Budhdeo
- The Sharma Lab, Department of Clinical and Movement Neurosciences, Queen Square Institute of Neurology, University College London, London, England
- National Hospital for Neurology and Neurosurgery, Queen Square, London, England
- School of Biomedical Engineering & Imaging Sciences, Faculty of Life Sciences & Medicine, King’s College London, London, England
| | - Nikhil Sharma
- The Sharma Lab, Department of Clinical and Movement Neurosciences, Queen Square Institute of Neurology, University College London, London, England
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Han X, Ding S, Lu J, Li Y. Global, regional, and national burdens of common micronutrient deficiencies from 1990 to 2019: A secondary trend analysis based on the Global Burden of Disease 2019 study. EClinicalMedicine 2022; 44:101299. [PMID: 35198923 PMCID: PMC8850322 DOI: 10.1016/j.eclinm.2022.101299] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Understanding micronutrient deficiency burdens and trends can help guide effective intervention strategies. This study aims to elucidate trends in common micronutrient deficiencies, in particular, dietary iron, iodine and vitamin A deficiencies, from 1990 to 2019 using Global Burden of Disease (GBD) 2019 study data. METHODS We analyzed data from the GBD 2019 study to calculate the prevalence, incidence, and disability-adjusted life year (DALY) rates of micronutrient deficiencies in geographic populations worldwide from 1990 to 2019. The estimated annual percentage changes (EAPCs) and age-standardized rates were calculated to evaluate the temporal trends. FINDINGS Globally, the age-standardized prevalence rates of iodine deficiency, vitamin A deficiency, and dietary iron deficiency decreased, with EAPCs of -0.690 (95% CI, -0.842 to -0.538), -3.15 (95% CI, -3.20 to -3.02), and -0.546 (95% CI, -0.585 to -0.507) between 1999 and 2019, respectively. Regarding the sociodemographic index (SDI), the highest age-standardized prevalence, incidence, and DALY rates of micronutrient deficiency were found in low-SDI countries in 2019. There were linear associations between the SDI and the healthcare access and quality (HAQ) index and age-standardized prevalence, incidence, and DALY rates. INTERPRETATION Global micronutrient deficiency burdens have decreased since 1990. The potential burden of iodine deficiency in some developed countries is worthy of attention. The results of this study could guide policy makers in implementing cost-effective interventions to reduce micronutrient deficiency burdens, particularly in low-SDI and low-HAQ index countries. FUNDING This work was supported by the National Natural Science Foundation of China (Grant No. 82000753) and the China Postdoctoral Science Foundation (Grant No. 2021MD703910).
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Affiliation(s)
- Xu Han
- Department of Obstetrics, The First Affiliated Hospital of China Medical University, 155 Nanjing Bei Street, Shenyang, 110001, Liaoning, China
| | - Shuangning Ding
- Department of Endocrinology and Metabolism, Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Disease, The First Affiliated Hospital of China Medical University, 155 Nanjing Bei Street, Shenyang, 110001, Liaoning, China
| | - Jinxin Lu
- Department of Clinical Nutrition, The First Affiliated Hospital of China Medical University, 155 Nanjing Bei Street, Shenyang, 110001, Liaoning, China
| | - Yongze Li
- Department of Endocrinology and Metabolism, Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Disease, The First Affiliated Hospital of China Medical University, 155 Nanjing Bei Street, Shenyang, 110001, Liaoning, China
- Corresponding author: Yongze Li, Ph.D., Department of Endocrinology and Metabolism, Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Disease, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Bei Street, Shenyang 110001, P.R. China. Tel: 13840140101.
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Salvo D, Garcia L, Reis RS, Stankov I, Goel R, Schipperijn J, Hallal PC, Ding D, Pratt M. Physical Activity Promotion and the United Nations Sustainable Development Goals: Building Synergies to Maximize Impact. J Phys Act Health 2021; 18:1163-1180. [PMID: 34257157 DOI: 10.1123/jpah.2021-0413] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Many of the known solutions to the physical inactivity pandemic operate across sectors relevant to the United Nations Sustainable Development Goals (SDGs). METHODS The authors examined the contribution of physical activity promotion strategies toward achieving the SDGs through a conceptual linkage exercise, a scoping review, and an agent-based model. RESULTS Possible benefits of physical activity promotion were identified for 15 of the 17 SDGs, with more robust evidence supporting benefits for SDGs 3 (good health and well-being), 9 (industry, innovation, and infrastructure), 11 (sustainable cities and communities), 13 (climate action), and 16 (peace, justice, and strong institutions). Current evidence supports prioritizing at-scale physical activity-promoting transport and urban design strategies and community-based programs. Expected physical activity gains are greater for low-and middle-income countries. In high-income countries with high car dependency, physical activity promotion strategies may help reduce air pollution and traffic-related deaths, but shifts toward more active forms of travel and recreation, and climate change mitigation, may require complementary policies that disincentivize driving. CONCLUSIONS The authors call for a synergistic approach to physical activity promotion and SDG achievement, involving multiple sectors beyond health around their goals and values, using physical activity promotion as a lever for a healthier planet.
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Kart PÖ, Türkmen MK, Anık A, Anık A, Ünüvar T. The association of lactating mothers' urinary and breast milk iodine levels with iodine nutrition status and thyroid hormone levels of newborns. Turk Arch Pediatr 2021; 56:207-212. [PMID: 34104910 DOI: 10.5152/turkarchpediatr.2021.20118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/27/2020] [Indexed: 12/15/2022]
Abstract
Objective To explore the iodine status of lactating mother-newborn pairs, and whether neonatal serum thyroid-stimulating hormone (TSH) can be used for estimation of iodine status of the population. Materials and Methods A total of 334 mothers and their healthy neonates were included. Urine, serum, and breast milk samples were obtained at 4th and 6th days of delivery. Urinary iodine concentration (UIC) was measured in urine samples of mothers and their neonates, as well as breast milk iodine concentration (BMIC) and serum thyroid hormone levels of neonates, were measured from the samples taken between the 4th and 6th days after birth. Results Median age of the mothers was 27 years (23-30). The median UIC of mothers and their newborns were 125 μg/L and 142 μg/L, respectively. The median BMIC was 138,0 μg/L. There was a significant positive correlation between the BMIC and UIC of neonates (r=0.276, p<0.001). The prevalence of neonatal serum TSH >10 mIU/L, which is suggestive of mild iodine deficiency (i.e. 3.0-19.9%), was 19.0%. However, there were no participants with iodine deficiency in lactating mothers and neonates according to UIC. Conclusion By previous reports, Aydın is iodine sufficient. Although 19% of the neonates had serum TSH levels >10 mU/L, which is suggestive of a mild iodine deficiency, iodine deficiency was observed in none of the neonates and their mothers. Therefore, it will be appropriate to investigate the role of neonatal TSH levels in a larger sample to assess the iodine status of the population.
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Affiliation(s)
- Pınar Özkan Kart
- Department of Pediatrics, Aydın Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Münevver Kaynak Türkmen
- Division of Neonatology, Department of Pediatrics, Aydın Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Ayşe Anık
- Division of Neonatology, Department of Pediatrics, Aydın Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Ahmet Anık
- Division of Pediatric Endocrinology, Department of Pediatrics, Aydın Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Tolga Ünüvar
- Division of Pediatric Endocrinology, Department of Pediatrics, Aydın Adnan Menderes University School of Medicine, Aydın, Turkey
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Kumorowulan S, Nurcahyani YD, Latifah L. Household Iodized Salt, Iodine Intake, and Thyroid Dysfunction in Reproductive Age Women in Different Regions of Iodine Adequacy. J Nutr Sci Vitaminol (Tokyo) 2021; 66:S468-S473. [PMID: 33612643 DOI: 10.3177/jnsv.66.s468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Iodine deficiency affects people of all age groups and yields detrimental health effects known as Iodine Deficiency Disorders (IDD). Universal Salt Iodization (USI) where above 90% household use iodized salt became the main program to optimized population iodine status. This study aimed to analyze iodine in salt, iodine status and thyroid functions from three different IDD endemic regions. METHODS This was a cross-sectional study, with women of reproductive age (15 to 45 y old) as subjects, conducted in plain area (Yogyakarta) city (n=250), mountainous area (Bukit Tinggi city) (n=249), and combination of mountaneous and plain area (Purworejo regency) (n=249). Urinary iodine (UIE), prevalence of hyperthyroidism, and hypothyroidism (diagnostic based on combination of TSH and fT4 level), also the presence or absence and level of iodine in salt were assessed. RESULT Iodized salt coverage have reached >90% household in all three region, while titration found 75.6% with adequate level of iodine in salt (>30 ppm), with wide range of iodine level in salt (0.00-218.2 ppm). With that condition, population in plain and combination of plain and mountainous area have more than adequate iodine status (218 μg/L and 224 μg/L), while population in mountaneous area still in mild iodine deficiency status (UIE median of 88 μg/L). Most population is in euthyroid condition. Hyperthyroidism, subclinical hyperthyroidism, secondary hyperthyroidism, subclinical hypothyroidism, and hypothyroidism were found in 0.7%, 4.8%, 0.4%, 8.9%, and 0.9% population consecutively. There were no relationship between iodine status and prevalence of hyperthyroidism and hypothyroidism, but subclinical hypothyroidism most prevalent in excess UIE population (12.5% vs 8.3%). CONCLUSION All three regions have achieved USI target. But the risk of iodine deficiency still found in mountaneous area. Household iodized salt coverage discrepancy between rapid test and titration strengthen the need of more accurate but efficient test of iodine level in salt.
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Tekalegn Y, Bekele K, Sahiledengle B, Woldeyohannes D. Prevalence of Goiter Among School-Aged Children in Ethiopia: Update of Systematic Review and Meta-analysis. Glob Adv Health Med 2021; 10:2164956120988660. [PMID: 33598366 PMCID: PMC7863155 DOI: 10.1177/2164956120988660] [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: 09/08/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 11/23/2022] Open
Abstract
Background Iodine deficiency is a major public health concern throughout the world. Goiter is the most visible sign of iodine deficiency. In Ethiopia, a study finding regarding the prevalence of goiter among school-age children is inconsistent and highly variable. Objectives To estimate the pooled prevalence of goiter among school-age children in Ethiopia. Methods Three international databases (MEDLINE/Pub-Med, Google Scholar and Science Direct) were systematically searched. Besides, the reference sections of identified articles were searched to increase the chance of detecting missed articles in gray literature. STATA Version 14 statistical software was used to conduct a meta-analysis. The pooled prevalence with a 95% confidence interval was displayed using the forest plot. A random-effect meta-analysis model was used to compute the pooled prevalence, and The Cochrane Q test statistics and I2 test were used to assess the heterogeneity of the studies. Results A total of 14 studies fulfilled the inclusion criteria and included in this systematic review and Meta-analysis, with a total sample size of 26,282. The finding of this systematic review revealed that the pooled prevalence of goiter among school-age children was 42.9% (95% CI: 38.8–46.9). The highest prevalence of goiter (46.7%) was observed in Oromia region and the lowest (26.3%) was observed in Benishangul-Gumuz region. Conclusions This review finding revealed that more than two in five of the school children in Ethiopia suffer from iodine deficiency disorder as manifested by the goiter rate.
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Affiliation(s)
- Yohannes Tekalegn
- Department of Public Health, School of Health Science, Goba Referral Hospital, Madda Walabu University, Bale Robe, Ethiopia
| | - Kebebe Bekele
- Department of Surgery, School of Medicine, Goba Referral Hospital, Madda Walabu University, Bale Robe, Ethiopia
| | - Biniyam Sahiledengle
- Department of Public Health, School of Health Science, Goba Referral Hospital, Madda Walabu University, Bale Robe, Ethiopia
| | - Demelash Woldeyohannes
- Department of Public Health, School of Health Science, Goba Referral Hospital, Madda Walabu University, Bale Robe, Ethiopia
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Availability of Adequately Iodized Dietary Salt and Associated Factors in a Town of Southeast Ethiopia: A Community-Based Cross-Sectional Survey. J Nutr Metab 2021; 2020:1357192. [PMID: 33489359 PMCID: PMC7803098 DOI: 10.1155/2020/1357192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 11/12/2020] [Accepted: 11/25/2020] [Indexed: 11/25/2022] Open
Abstract
Background Iodine deficiency is the world's major cause of preventable intellectual impairment, and nearly 2 billion people are at risk of iodine deficiency worldwide. Prevention and control of iodine deficiency disorders primarily aim at ensuring the intake of adequate iodine to maintain normal thyroid function. In our study area, studies regarding the coverage of adequately iodized salt at household level are meager. Hence, this study aimed to assess the magnitude of adequately iodized dietary salt at a household level in Kore Town, Southeast Ethiopia. Methods A community-based cross-sectional study was conducted in the Kore town from August 1 to 30, 2019. A total of 394 households were selected for this study using a simple random sampling technique. The level of salt iodine content was determined using the rapid field test kit. Then, iodine contents of dietary salt were reported as <15 parts per million and ≥15 parts per million. Data regarding sociodemographic factors, knowledge of respondents about iodized salt, and iodized salt handling practices were collected through a face-to-face interview. The binary logistic regression model was used to assess the association between independent factors and the outcome variable. Statistical significance was declared at p < 0.05. Result Out of all the households, 223 (56.6%) had adequately iodized salt. Not exposing iodized salt to sunlight (AOR = 2.35, 95% CI: 1.1, 5.2), storing the salt at a dry or cold place [(AOR = 4.77, 95% CI: 1.39, 16.45) and (AOR = 8.23, 95% CI: 1.44, 47.19), respectively], and having good knowledge about iodized salt (AOR = 1.88, 95% CI: 1.18, 3.01) were significantly associated with the presence of adequately iodized salt at the household level. Conclusion Availability of adequately iodized salt in the study area was far below the World Health Organization recommendation. Information regarding the importance and proper handling of iodized dietary salt should be communicated to the householders.
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Maldonado-Araque C, Valdés S, Badía-Guillén R, Lago-Sampedro A, Colomo N, Garcia-Fuentes E, Gutierrez-Repiso C, Goday A, Calle-Pascual A, Castaño L, Castell C, Delgado E, Menendez E, Franch-Nadal J, Gaztambide S, Girbés J, Chaves FJ, Soriguer F, Rojo-Martínez G. Iodine Deficiency and Mortality in Spanish Adults: Di@bet.es Study. Thyroid 2021; 31:106-114. [PMID: 32781944 PMCID: PMC7840306 DOI: 10.1089/thy.2020.0131] [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] [Indexed: 11/30/2022]
Abstract
Background: Longitudinal data assessing the impact of iodine deficiency (ID) on mortality are scarce. We aimed to study the association between the state of iodine nutrition and the risk of total and cause-specific mortality in a representative sample of the Spanish adult population. Methods: We performed a longitudinal observational study to estimate mortality risk according to urinary iodine (UI) concentrations using a sample of 4370 subjects >18 years representative of the Spanish adult population participating in the nationwide study Di@bet.es (2008-2010). We used Cox regression to assess the association between UI at the start of the study (<50, 50-99, 100-199, 200-299, and ≥300 μg/L) and mortality during follow-up (National death registry-end of follow-up December 2016) in raw models, and adjusted for possible confounding variables: age, sex, educational level, hypertension, diabetes, obesity, chronic kidney disease, smoking, hypercholesterolemia, thyroid dysfunction, diagnosis of cardiovascular disease or cancer, area of residence, physical activity, adherence to Mediterranean diet, dairy and iodinated salt intake. Results: A total of 254 deaths were recorded during an average follow-up period of 7.3 years. The causes of death were cardiovascular 71 (28%); cancer 85 (33.5%); and other causes 98 (38.5%). Compared with the reference category with adequate iodine nutrition (UI 100-300 μg/L), the hazard ratios (HRs) of all-cause mortality in the category with UI ≥300 μg/L were 1.04 (95% confidence interval [CI 0.54-1.98]); however, in the categories with 50-99 UI and <50 μg/L, the HRs were 1.29 [CI 0.97-1.70] and 1.71 [1.18-2.48], respectively (p for trend 0.004). Multivariate adjustment did not significantly modify the results. Conclusions: Our data indicate an excess mortality in individuals with moderate-severe ID adjusted for other possible confounding factors.
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Affiliation(s)
- Cristina Maldonado-Araque
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Sergio Valdés
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Address correspondence to: Sergio Valdés, MD, PhD, Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga/Universidad de Málaga, IBIMA, Plaza del Hospital Civil s/n, Malaga 29009, Spain
| | - Rocío Badía-Guillén
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
| | - Ana Lago-Sampedro
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Natalia Colomo
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Eduardo Garcia-Fuentes
- UGC de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
| | - Carolina Gutierrez-Repiso
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Virgen de la Victoria, Instituto de Investigagión Biomedica de Málaga-IBIMA, Málaga, Spain
| | - Albert Goday
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain
| | - Alfonso Calle-Pascual
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario S. Carlos de Madrid, Madrid, Spain
| | - Luis Castaño
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Hospital Universitario Cruces, BioCruces Bizkaia, UPV/EHU, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Conxa Castell
- Department of Health, Public Health Agency of Catalonia, Barcelona, Spain
| | - Elías Delgado
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Central de Asturias/University of Oviedo, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Edelmiro Menendez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Central de Asturias/University of Oviedo, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Josep Franch-Nadal
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- EAP Raval Sud, Institut Català de la Salut, Red GEDAPS, Primary Care, Unitat de Suport a la Recerca (IDIAP—Fundació Jordi Gol), Barcelona, Spain
| | - Sonia Gaztambide
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Cruces, BioCruces Bizkaia, UPV/EHU, Barakaldo, Spain
| | - Joan Girbés
- Diabetes Unit, Hospital Arnau de Vilanova, Valencia, Spain
| | - Francisco Javier Chaves
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Genomic Studies and Genetic Diagnosis Unit, Fundación de Investigación del Hospital Clínico de Valencia-INCLIVA, Valencia, Spain
| | - Federico Soriguer
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Gemma Rojo-Martínez
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
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Goiter and Its Associated Factors among Adolescent High School Girls at Tach Armachiho District, Northwest Ethiopia: An Institution-Based Cross-Sectional Study. J Nutr Metab 2020; 2020:3695952. [PMID: 33149948 PMCID: PMC7603612 DOI: 10.1155/2020/3695952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 09/23/2020] [Accepted: 10/10/2020] [Indexed: 11/26/2022] Open
Abstract
Introduction In Ethiopia, iodine deficiency disorder (IDD) is a major public health problem. The most visible effect of IDD is the appearance of goiters, and 28 million people are affected by goiter. Therefore, this study aimed to assess the prevalence and associated factors of goiter among high school adolescent girls at Tach Armachiho district, Northwest Ethiopia. Methods An institution-based cross-sectional study was conducted from October to November 2018. A total of 620 high school adolescent girls were selected using the simple random sampling technique, and structured questionnaires having observational check-list were used for data collection. The presence of goiter was estimated using criteria set by World Health Organization. Iodine content of the salt was estimated by using spot testing kits. Both bivariable and multivariable logistic regressions were used to identify associated factors. The degree of association between independent and dependent variables was assessed by using odds ratio with 95% confidence interval. Those variables having p value of less than 0.05 in the multivariable analysis were considered as significant factors for goiter. Results A total of 614 adolescent girls gave a complete response. The prevalence of goiter among adolescent girls was 24.1%. In the multivariable logistic regression analysis, age of adolescent girls (adjusted odds ratio (AOR) = 1.57, 95% CI: 1.01–2.46), residence (AOR = 1.91, 95% CI: 1.04–3.51), family history (AOR = 4.96, 95% CI: 3.19, 7.72), low dietary diversity (AOR = 8.39, 95% CI: 4.36–16.14), and medium dietary diversity (AOR = 2.26, 95% CI: 1.36–3.77) were significantly associated with adolescent girls goiter. Conclusions Goiter among high school adolescent girls in this study was high. Age of adolescent, residence, family history of goiter, and dietary diversity were statistically significant factors for goiter. Therefore, more emphasis will be given for late adolescent age, having family history of goiter, low dietary diversity, and rural residence to improve the burden of adolescent goiter.
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COMPREHENSIVE ASSESSMENT OF QUALITY AND SAFETY OF BERRY SAUCE WITH IODINE-CONTAINING ADDITIVE. EUREKA: LIFE SCIENCES 2020. [DOI: 10.21303/2504-5695.2020.001435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
One of the acute problems of our time is iodine deficiency in human nutrition, which is typical for both countries with economies in transition and economically developed ones. Today, about a third of the world's population live in conditions of natural iodine deficiency. The most common solution to iodine deficiency is salt iodization, but this can lead to excessive iodine intake. In addition, it is much healthier to eat organic iodine, which is found in large quantities in brown algae. It is the development of new types of food products using brown algae as a biologically active additive that is a new promising direction for solving the problem of insufficient iodine consumption. Taking into account the relevance of solving the problem of iodine deficiency and the constantly growing demand for fruit and berry sauces, the technology of berry sauces based on blueberries, cranberries, dogwood, sea buckthorn and viburnum with the addition of brown algae has been developed. However, the mass introduction into production and consumption of the developed sauces will make a significant contribution to solving the global problem of insufficient consumption of organic iodine, requires research to establish their compliance with the typical quality and safety indicators for these products. The physicochemical indicators of the developed berry sauces were investigated, confirming the high quality in terms of the content of soluble solids – 25.0 ... 28.5%, the mass fraction of titratable acids – 1.9%, and indicate the complete absence of mineral, vegetable and foreign substances in the product. It was found that the developed sauces with iodine-containing algal additive have high microbiological quality indicators when stored for up to 14 days, even without adding preservatives. The complete safety of the developed berry sauces was established in terms of the content of toxic elements, as well as the absence of genetically modified organisms in the finished product
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Aslan Çin NN, Bezirganoğlu Altuntaş N, Özfer Özçelik A. Is iodized salt efficient to overcome iodine deficiency in pregnants? Turk J Obstet Gynecol 2020; 17:90-97. [PMID: 32850182 PMCID: PMC7406895 DOI: 10.4274/tjod.galenos.2020.20727] [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: 12/15/2019] [Accepted: 04/24/2020] [Indexed: 12/01/2022] Open
Abstract
Objective: Iodine is a trace element that synthesizes thyroid hormones necessary for optimal human growth and development. The relationship between dietary iodine intake and spot urinary iodine excretion in pregnant women has not been previously evaluated in Trabzon city, which is an endemic area of iodine deficiency in the Black Sea region of Turkey. This study aimed to evaluate the relationship between dietary iodine intake and urine iodine excretion in pregnant women. Materials and Methods: This study enrolled 150 pregnant women aged between 19 and 45 years who applied to Clinic of Gynecology and Obstetrics in Trabzon. Spot urine specimens were taken, and dietary iodine intake data were collected using a food frequency questionnaire (FFQ) and 24-hours dietary recall (24-h DR) method. Results: The median urinary iodine concentration (UIC) in the general specimen was 100.6 μg/L. Of the pregnant women, 80.0% had insufficient and 20.0% had sufficient iodine levels, according to UIC. Although total iodine-rich food intake determined by FFQ was sufficient in 20.7% (n=31) of participants, 24-h DR iodine intake was sufficient only 10.7% (n=16). A significant association between urinary iodine excretion and iodine intake was observed in both 24-h DR and FFQ intake estimates (p<0.05). The iodine intake values obtained in both 24-h DR and FFQ and the iodized salt effect were correlated with UIC in all models (p<0.05). Even though 96.0% of pregnant women used iodized salt, its effect on UIC was 15.2%. Conclusion: Both methods indicate that the iodine intake of pregnant women might be insufficient in Trabzon area. Also, although iodized salt use is high in pregnant women in Trabzon, it is not enough to prevent iodine deficiency.
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Affiliation(s)
- Nazlı Nur Aslan Çin
- Ankara University Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
| | - Neslihan Bezirganoğlu Altuntaş
- University of Health Sciences Turkey, Trabzon Kanuni Training and Research Hospital, Clinic of Gynecology and Obstetrics, Trabzon, Turkey
| | - Ayşe Özfer Özçelik
- Ankara University Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
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Watson CV, Lewin M, Ragin-Wilson A, Jones R, Jarrett JM, Wallon K, Ward C, Hilliard N, Irvin-Barnwell E. Characterization of trace elements exposure in pregnant women in the United States, NHANES 1999-2016. ENVIRONMENTAL RESEARCH 2020; 183:109208. [PMID: 32058143 PMCID: PMC8243358 DOI: 10.1016/j.envres.2020.109208] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/30/2020] [Accepted: 01/30/2020] [Indexed: 05/19/2023]
Abstract
OBJECTIVE The objective of the current study is to report on urine, blood and serum metal concentrations to characterize exposures to trace elements and micronutrient levels in both pregnant women and women of child-bearing age in the U.S. National Health and Nutrition Examination Survey (NHANES) years 1999-2016. METHODS Urine and blood samples taken from NHANES participants were analyzed for thirteen urine metals, three blood metals, three serum metals, speciated mercury in blood and speciated arsenic in urine. Adjusted and unadjusted least squares geometric means and 95% confidence intervals were calculated for all participants among women aged 15-44 years. Changes in exposure levels over time were also examined. Serum cotinine levels were used to adjust for smoke exposure, as smoking is a source of metal exposure. RESULTS Detection rates for four urine metals from the ATSDR Substance Priority List: arsenic, lead, mercury and cadmium were ~83-99% for both pregnant and non-pregnant women of child bearing age. A majority of metal concentrations were higher in pregnant women compared to non-pregnant women. Pregnant women had higher mean urine total arsenic, urine mercury, and urine lead; however, blood lead and mercury were higher in non-pregnant women. Blood lead, cadmium, mercury, as well as urine antimony, cadmium and lead in women of childbearing age decreased over time, while urine cobalt increased over time. CONCLUSIONS Pregnant women in the US have been exposed to several trace metals, with observed concentrations for some trace elements decreasing since 1999.
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Affiliation(s)
- Christina Vaughan Watson
- Division of Toxicology and Human Health Sciences, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Michael Lewin
- Division of Toxicology and Human Health Sciences, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Angela Ragin-Wilson
- Division of Toxicology and Human Health Sciences, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Robert Jones
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jeffery M Jarrett
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Kristen Wallon
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Cynthia Ward
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Nolan Hilliard
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Elizabeth Irvin-Barnwell
- Division of Toxicology and Human Health Sciences, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Atlanta, GA, USA
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Dietary Relationship with 24 h Urinary Iodine Concentrations of Young Adults in the Mountain West Region of the United States. Nutrients 2020; 12:nu12010121. [PMID: 31906335 PMCID: PMC7019367 DOI: 10.3390/nu12010121] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/08/2019] [Accepted: 12/19/2019] [Indexed: 01/05/2023] Open
Abstract
Background: Iodine deficiency is not seen as a public health concern in the US. However certain subpopulations may be vulnerable due to inadequate dietary sources. The purpose of the present study was to determine the dietary habits that influence iodine status in young adult men and women, and to evaluate the relationship between iodine status and thyroid function. Methods: 111 participants (31.6 ± 0.8 years, 173.2 ± 1.0 cm, 74.9 ± 1.7 kg) provided 24 h urine samples and completed an iodine-specific Food Frequency Questionnaire (FFQ) for assessment of urinary iodine content (UIC) as a marker of iodine status and habitual iodine intake, respectively. Serum Thyroid Stimulating Hormone (TSH) concentration was evaluated as a marker of thyroid function. Spearman correlational and regression analysis were performed to analyze the associations between iodine intake and iodine status, and iodine status and thyroid function. Results: 50.4% of participants had a 24 h UIC < 100 µg/L). Dairy (r = 0.391, p < 0.000) and egg intake (r = 0.192, p = 0.044) were the best predictors of UIC, accounting for 19.7% of the variance (p ≤ 0.0001). There was a significant correlation between UIC and serum TSH (r = 0.194, p < 0.05) but TSH did not vary by iodine status category (F = 1.087, p = 0.372). Discussion: Total dairy and egg intake were the primary predictors of estimated iodine intake, as well as UIC. Iodized salt use was not a significant predictor, raising questions about the reliability of iodized salt recall. These data will be useful in directing public health and clinical assessment efforts in the US and other countries.
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Wang Z, Zang J, Shi Z, Zhu Z, Song J, Zou S, Jin W, Jia X, Guo C, Liu S. Iodine status of 8 to 10 years old children within 20 years following compulsory salt iodization policy in Shanghai, China. Nutr J 2019; 18:63. [PMID: 31677639 PMCID: PMC6825720 DOI: 10.1186/s12937-019-0491-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 09/28/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND In 1996, Shanghai implemented universal salt iodization and has became the last provincial unit in China to carry out this intervention. In this study, we summarized achievements in past 20 years, to provide suggestions and evidence for the next stage of iodine supplementation. METHODS This study summarized and analyzed monitoring data of children from 1997, 1999, 2005, 2011, 2014, and 2017 in Shanghai. In each monitoring year, 30 streets or towns were selected using the probability-proportional-to-size sampling technique. One primary school was selected from each street or town by a simple random sampling technique. From each school, 40 children aged 8 to 10 years were randomly selected. The number of children was divided equally by sex and age. RESULTS In 1997, 1999, 2005, 2011, 2014, and 2017, median urinary iodine (MUI) was 227.5 μg/L, 214.3 μg/L, 198.1 μg/L, 181.6 μg/L, 171.4 μg/L, and 183.0 μg/L, goiter rate was 3.07, 0.40, 0.08, 0.08, 0.86, and 1.90%, and median thyroid volume (MTvol) was 2.9 mL, 1.2 mL, 2.4 mL, 1.0 mL, 1.8 mL, and 2.8 mL, respectively. There was a linear correlation between goiter rate and median thyroid volume (MTvol) (r = 0.95, P = 0.014). Household salt iodine concentration (SIC) was dropping every monitoring (P < 0.05). There was a significant difference among different household SIC groups in MUI in 1999 and 2017, and in MTvol in 1999 (P < 0.05). No significant differences were detected in the other years. CONCLUSIONS In Shanghai, the iodine status of 8 to 10 years old children is adequate. Household SIC have little effect on iodine status of children. Future studies should analyze the dietary sources of iodine, especially from pre-packaged and prepared-away-from-home foods or meals. The regular monitoring of iodine status is important to human health.
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Affiliation(s)
- Zhengyuan Wang
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Jiajie Zang
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Zhehuan Shi
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Zhenni Zhu
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Jun Song
- Laboratory of Hygienic Inspection, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Shurong Zou
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Wei Jin
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Xiaodong Jia
- Division of Health Risk Factors Monitoring and Control, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China
| | - Changyi Guo
- General Office, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China.
| | - Shoujun Liu
- Institute of Iodine Deficiency Disorders, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang, China.
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Sharma PR, Pandey S, Soni VK, Choudhary G, Sharma RK. Macroscopic recognition of iodide by polymer appended calix[4]amidocrown resin. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1676425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Pragati R Sharma
- Department of Chemistry, Indian Institute of Technology, Jodhpur, India
| | - Shubham Pandey
- Department of Chemistry, Indian Institute of Technology, Jodhpur, India
| | - Vineet K Soni
- Department of Chemistry, Indian Institute of Technology, Jodhpur, India
| | - Ganpat Choudhary
- Department of Chemistry, Indian Institute of Technology, Jodhpur, India
| | - Rakesh K Sharma
- Department of Chemistry, Indian Institute of Technology, Jodhpur, India
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Peynirci H, Uzuntepe Aksu Ç, Doğan A, Ersoy C. Determining the Level of Knowledge about Graves’ Disease: Single-Center Results. ANKARA MEDICAL JOURNAL 2019. [DOI: 10.17098/amj.624708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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24
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Kirichuk AA, Skalny AA, Dodkhoyev JS, Skalnaya MG, Grabeklis AR, Ajsuvakova OP, Tinkov AA, Notova SV, Bjørklund G, Tinkova MN, Chizhov AY, Bobrovnitskiy IP, Bolotnikova EA, Chernigov VV, Skalny AV. The efficiency of Governmental and WFP UN Programs for improvement of nutritional status in Tajik schoolchildren as assessed by dietary intake and hair trace element content. J Trace Elem Med Biol 2019; 55:196-203. [PMID: 31345358 DOI: 10.1016/j.jtemb.2019.06.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/07/2019] [Accepted: 06/24/2019] [Indexed: 11/13/2022]
Abstract
BACKGROUND The objective of the study was to assess hair trace element and mineral content in children undergoing WFP UN and the governmental programs of school nutrition in Tajikistan. METHODS WFP program included provision or wheat flour fortified with micronutrients including Fe and Zn, and iodized salt, whereas within the governmental program hot meals were provided. A total of 202 children studying in schools that were not (Type 1, n = 100) or were involved in dietary intervention programs (Type 2, n = 102). Food and hair trace element content was assessed using ICP-MS. RESULTS Daily intake of Fe, I, Zn, B, Co, Mg, Si, and Sr in Type 2 schools was more than 2.5, 12, 4, 2.9, 2.6, 2, 3, and 2-fold higher than that in Type 1 schools. Correspondingly, anthropometric parameters in children from Type 2 schools exceeded the control values. Surprisingly, no significant difference in hair iodine levels was detected. Hair analysis demonstrated a significant increase in hair Ca, Mg, Na, Co, Cr, Cu, Fe, Li, Mn, Se, V, Zn content. Certain toxic elements including Al, As, and Be were also characterized by an increase in Type 2 schools. At the same time, nutritional intervention was associated with a significant decrease in hair B, Hg, and Sn levels. CONCLUSIONS Nutritional intervention within WFP and the governmental program was effective in increasing essential trace element supply in Tajik schoolchildren. However, further studies including a detailed assessment of nutritional and health status with a special focus on iodine and thyroid functioning are required.
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Affiliation(s)
- Anatoly A Kirichuk
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia
| | - Andrey A Skalny
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia; ANO "Center for Biotic Medicine", Russia
| | | | - Margarita G Skalnaya
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia; ANO "Center for Biotic Medicine", Russia; IM Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia
| | - Andrey R Grabeklis
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia; ANO "Center for Biotic Medicine", Russia; IM Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia
| | - Olga P Ajsuvakova
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia; IM Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia; Yaroslavl State University, 150003, Yaroslavl, Russia
| | - Alexey A Tinkov
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia; IM Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia; Yaroslavl State University, 150003, Yaroslavl, Russia
| | - Svetlana V Notova
- Federal Scientific Center of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia
| | - Geir Bjørklund
- Ovidius University, 900527, Constanta, Romania; Council for Nutritional and Environmental Medicine, 8610, Mo i Rana, Norway
| | - Margarita N Tinkova
- ANO "Center for Biotic Medicine", Russia; Orenburg Central District Hospital, 460000, Orenburg, Russia
| | - Alexey Ya Chizhov
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia
| | - Igor P Bobrovnitskiy
- Centre for Strategic Planning, Russian Ministry of Health, 119435, Moscow, Russia
| | | | | | - Anatoly V Skalny
- Peoples' Friendship University of Russia (RUDN University), 117198, Moscow, Russia; IM Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia; Trace Element Institute for UNESCO, 69100, Lyon, France.
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Vasudevan S, Senthilvel S, Sureshbabu J. Knowledge attitude and practice on iodine deficiency disorder and iodine level in salt in retail and vendors among the rural population in south India: A community based observational and descriptive study. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2019. [DOI: 10.1016/j.cegh.2018.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Iodine Status in the Colombian Population and the Impact of Universal Salt Iodization: A Double-Edged Sword? J Nutr Metab 2019; 2019:6239243. [PMID: 31061736 PMCID: PMC6466914 DOI: 10.1155/2019/6239243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/18/2019] [Indexed: 01/14/2023] Open
Abstract
Iodine deficiency and iodine excess have severe consequences on human health and have been associated with the presence of goiter, hypothyroidism, hyperthyroidism, thyroid cancer, thyroid nodules and thyroid autoimmunity, poor mental health, and impaired intellectual development. Universal salt iodization programs have been considered one of the most cost-effective interventions for the prevention of iodine deficiency-associated disorders, as evidenced over time since the implementation of such programs. However, these efforts have also led to an excessive consumption of iodine in certain geographical regions, due to salt overuse. Consequently, the amount of iodine derived from salt intake exceeds the established limits required for achieving the right balance between salt consumption and health benefits and leads to undesirable health effects. In Colombia, the recommendations and standards for the production and commercialization of iodized salt are fully complied with. Nevertheless, there is a remarkable rate of iodine excess among the country's population, which, at least hypothetically, represents a higher risk for developing functional and structural disorders of the thyroid gland. This review analyzes universal salt iodization programs worldwide, particularly their impact on the thyroid gland and the results of the studies conducted in Colombia following the implementation of such strategy.
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Factors associated with the availability of iodized salt at household level: a case study in Bangladesh. Public Health Nutr 2019; 22:1815-1823. [PMID: 30755282 DOI: 10.1017/s1368980018003907] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE The availability of iodized salt in households remains low in Bangladesh, which calls for improving the salt iodization quality and its coverage. The present study assessed the socio-economic disparity in Bangladesh to characterize the availability of iodized salt at household level. DESIGN Associations between different socio-economic factors and availability of iodized salt at household level were explored using Bayesian mixed-effects logistic models after adjusting the district- and cluster-level random effects. SETTING Bangladesh Multiple Indicator Cluster Survey (MICS), 2012-13.ParticipantsHouseholds (sample size, n 50981). RESULTS Results showed that 73·15 % of household salt samples were iodized to some extent although iodization level varied. According to the regression model, houses with young (adjusted odds ratio of posterior mean (OR) = 1·31; 95 % credible interval (CI) 1·09, 1·64) and educated (OR = 3·66; 95 % CI 3·25, 4·23) household heads had significantly higher likelihood of availability of iodized salt. In addition, iodized salt was less likely be found in poor and rural households, as urban households were 2·88 times (95 % CI 2·41, 3·34) more likely have iodized salt. Moreover, the regional locations of the households were an important component that contributed to the local iodized salt coverage. As per the district-wise distribution, the north-west part of Bangladesh and Cox's Bazar in the far south seemed to lack household-level iodized salt. CONCLUSIONS Our findings suggest that iodized salt intervention should be promoted considering the area variations, which could potentially help policy makers to design interventions in the context of Bangladesh.
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Lockyer S, White A, Buttriss JL. Biofortified crops for tackling micronutrient deficiencies - what impact are these having in developing countries and could they be of relevance within Europe? NUTR BULL 2018. [DOI: 10.1111/nbu.12347] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | - A. White
- British Nutrition Foundation; London UK
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29
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Rong S, Gao Y, Yang Y, Shao H, Okekunle AP, Lv C, Du Y, Sun H, Jiang Y, Darko GM, Sun D. Nitric oxide is involved in the hypothyroidism with significant morphology changes in female Wistar rats induced by chronic exposure to high water iodine from potassium iodate. CHEMOSPHERE 2018; 206:320-329. [PMID: 29754056 DOI: 10.1016/j.chemosphere.2018.05.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 04/27/2018] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Epidemiological studies indicated that chronic exposure to high water iodine is associated with primary hypothyroidism (PH) and subclinical hypothyroidism (SCH). However, the mechanism is not well understood. In this study, we explored whether chronic exposure to high water iodine from potassium iodate (KIO3) can induce hypothyroidism in addition to determining if nitric oxide (NO) is involved in the pathogenesis. 96 female Wistar rats were divided into six groups: control, I1000μg/L, I3000μg/L, I6000μg/L, N-nitro-L-arginine methylester (L-NAME) and L-NAME+I6000μg/L. After 3 months, urine iodine concentration, thyroid hormone, NO and nitric oxide synthase (NOS) serum levels were determined. Additionally, thyroid expression of inducible nitric oxide synthase (iNOS) was also investigated. Thyroid morphology was observed under light microscopy and transmission electron microscope. SCH as indicated by elevated serum thyrotropin (TSH) was induced among rats exposed to 3000 μg/L I-, while rats treated with 6000 μg/L I- presented PH characterized by elevated TSH and lowered total thyroxine in serum. Moreover, serum NO, NOS and iNOS expression in the thyroid were significantly increased in I3000μg/L and I6000μg/L groups. Changes in thyroid function and morphology in the L-NAME+I6000μg/L group were extenuated compared to I6000μg/L group. These findings suggested that chronic exposure to high water iodine from KIO3 likely induces hypothyroidism with significant morphology changes in female Wistar rats and NO appears to be involved in the pathogenesis.
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Affiliation(s)
- Shengzhong Rong
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Hanwen Shao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Akinkunmi Paul Okekunle
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China
| | - Chunpeng Lv
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Yang Du
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Hongna Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Yuting Jiang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Gottfried M Darko
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China.
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Mizéhoun-Adissoda C, Yémoa A, Sossa Jerome C, Biobou A, Alouki K, Azandjèmé C, Houngbénou Houngla J, Houinato D, Bigot A, Desport JC. Teneur en iode et qualité microbiologique des sels alimentaires commercialisés au Bénin. NUTR CLIN METAB 2018. [DOI: 10.1016/j.nupar.2018.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Micronutrient intake adequacy in children from birth to 8 years. Data from the Childhood Obesity Project. Clin Nutr 2018; 37:630-637. [DOI: 10.1016/j.clnu.2017.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 02/02/2017] [Accepted: 02/02/2017] [Indexed: 11/16/2022]
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A luminescent cadmium based MOF as selective and sensitive iodide sensor in aqueous medium. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.01.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Humphrey OS, Young SD, Bailey EH, Crout NMJ, Ander EL, Watts MJ. Iodine soil dynamics and methods of measurement: a review. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:288-310. [PMID: 29302664 DOI: 10.1039/c7em00491e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Iodine is an essential micronutrient for human health: insufficient intake can have multiple effects on development and growth, affecting approximately 1.9 billion people worldwide. Previous reviews have focussed on iodine analysis in environmental and biological samples, however, no such review exists for the determination of iodine fractionation and speciation in soils. This article reviews the geodynamics of both stable 127I and the long-lived isotope 129I (t1/2 = 15.7 million years), alongside the analytical methods for determining iodine concentrations in soils, including consideration of sample preparation. The ability to measure total iodine concentration in soils has developed significantly from rudimentary spectrophotometric analysis methods to inductively coupled plasma mass spectrometry (ICP-MS). Analysis with ICP-MS has been reported as the best method for determining iodine concentrations in a range of environmental samples and soils due to developments in extraction procedures and sensitivity, with extremely good detection limits typically <μg L-1. The ability of ICP-MS to measure iodine and its capabilities to couple on-line separation tools has the significance to develop the understanding of iodine geodynamics. In addition, nuclear-related analysis and recent synchrotron light source analysis are discussed.
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Affiliation(s)
- O S Humphrey
- Inorganic Geochemistry, Centre for Environmental Geochemistry, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK
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Severo MD, Scheffel RS. Do Brazilian Pregnant Women Need Iodine Supplementation? A Commentary on the Latest American Thyroid Association Guideline. REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRÍCIA 2018; 40:1-3. [PMID: 29195267 PMCID: PMC10467364 DOI: 10.1055/s-0037-1608955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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de Macedo AN, Macri J, Hudecki PL, Saoi M, McQueen MJ, Britz-McKibbin P. Validation of a Capillary Electrophoresis Assay for Monitoring Iodine Nutrition in Populations for Prevention of Iodine Deficiency: An Interlaboratory Method Comparison. ACTA ACUST UNITED AC 2017; 1:649-660. [DOI: 10.1373/jalm.2016.022848] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/09/2017] [Indexed: 11/06/2022]
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Amiri P, Hamzavi Zarghani N, Nazeri P, Ghofranipour F, Karimi M, Amouzegar A, Mirmiran P, Azizi F. Can an Educational Intervention Improve Iodine Nutrition Status in Pregnant Women? A Randomized Controlled Trial. Thyroid 2017; 27:418-425. [PMID: 27809707 DOI: 10.1089/thy.2016.0185] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Because of their increased need for iodine, pregnant women are among the high-risk groups for iodine deficiency. The purpose of this study was to evaluate the effectiveness of an educational program on the iodine nutrition status of pregnant women. METHODS In this randomized controlled trial, 100 pregnant women were randomly selected from five healthcare centers in the southern region of Tehran, the capital of Iran. In the intervention group, pregnant women received a four-month educational program, which included two face-to-face educational sessions, using a researcher-designed educational pamphlet in the second and third trimesters, and two follow-up telephone calls. Knowledge, attitude, and practice (KAP) scores, urinary iodine concentration (UIC), and salt iodine content were assessed at baseline and four months after the intervention. RESULTS At baseline, there were significant associations between knowledge and attitude (r = 0.38, p = 0.03) between practice and UIC (r = 0.28, p = 0.01) and between UIC and iodine content of salt (r = 0.24, p = 0.009). Although a significant difference was found in mean KAP scores between the two groups after the educational intervention, scores were significantly higher in the intervention group compared with controls (p < 0.01). There were no significant differences in UIC and iodine content of salt between the two groups at follow-up. CONCLUSIONS Despite educational intervention increasing KAP among women regarding the importance of iodine and iodized salt consumption during pregnancy, their iodine status did not improve. Considering the main socio-environmental determinants of iodine deficiency, in particular, the monitoring of salt fortification, prescribing iodine containing supplements as well as improving health literacy in pregnant women seem essential strategies.
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Affiliation(s)
- Parisa Amiri
- 1 Research Center for Social Determinants of Endocrine Health and Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Najmeh Hamzavi Zarghani
- 1 Research Center for Social Determinants of Endocrine Health and Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
- 2 Department of Health Education and Health Promotion, Tarbiat Modares University , Tehran, Iran
| | - Pantea Nazeri
- 3 Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Fazlollah Ghofranipour
- 2 Department of Health Education and Health Promotion, Tarbiat Modares University , Tehran, Iran
| | - Mehrdad Karimi
- 1 Research Center for Social Determinants of Endocrine Health and Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
- 4 Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences , Tehran, Iran
| | - Atieh Amouzegar
- 5 Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Parvin Mirmiran
- 3 Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Fereidoun Azizi
- 5 Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences , Tehran, Iran
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von Oettingen JE, Brathwaite TD, Carpenter C, Bonnell R, He X, Braverman LE, Pearce EN, Larco P, Larco NC, Jean-Baptiste E, Brown RS. Population Survey of Iodine Deficiency and Environmental Disruptors of Thyroid Function in Young Children in Haiti. J Clin Endocrinol Metab 2017; 102:644-651. [PMID: 27768855 DOI: 10.1210/jc.2016-2630] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 10/18/2016] [Indexed: 11/19/2022]
Abstract
CONTEXT Iodine deficiency is the leading cause of preventable neurodevelopmental delay in children worldwide and a possible public health concern in Haiti. OBJECTIVE To determine the prevalence of iodine deficiency in Haitian young children and its influence by environmental factors. DESIGN Cross-sectional study, March through June 2015. SETTING Community churches in 3 geographical regions in Haiti. PARTICIPANTS 299 healthy Haitian children aged 9 months to 6 years; one-third each enrolled in a coastal, mountainous, and urban region. MAIN OUTCOME MEASURES Urinary iodide, serum thyrotropin (TSH), goiter assessment, and urinary perchlorate and thiocyanate. RESULTS Mean age was 3.3±1.6 years, with 51% female, median family income USD 30/week, and 16% malnutrition. Median urinary iodide levels were normal in coastal (145 μg/L, interquartile range [IQR] 97 to 241) and urban regions (187 μg/L, IQR 92 to 316), but revealed mild iodine deficiency in a mountainous region (89 μg/L, IQR 56 to 129), P < 0.0001. Grade 1 goiters were palpated in 2 children, but TSH values were normal. Urinary thiocyanate and perchlorate concentrations were not elevated. Predictors of higher urinary iodide included higher urinary thiocyanate and perchlorate, breastfeeding, and not living in a mountainous region. CONCLUSIONS Areas of mild iodine deficiency persist in Haiti's mountainous regions. Exposure to two well-understood environmental thyroid function disruptors is limited.
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Affiliation(s)
- Julia E von Oettingen
- Division of Endocrinology, McGill University Health Center, Montreal, Quebec H4A 3J1, Canada
| | | | | | - Ric Bonnell
- Pediatric Emergency Medicine, Dell Children's Medical Center of Central Texas, Austin, Texas 78723
| | - Xuemei He
- Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, Boston, Massachusetts 02118
| | - Lewis E Braverman
- Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, Boston, Massachusetts 02118
| | - Elizabeth N Pearce
- Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, Boston, Massachusetts 02118
| | - Philippe Larco
- Fondation Haïtienne de Diabète et de Maladies Cardiovasculaires, Port au Prince HT6112, Haiti; and
| | - Nancy Charles Larco
- Fondation Haïtienne de Diabète et de Maladies Cardiovasculaires, Port au Prince HT6112, Haiti; and
| | - Eddy Jean-Baptiste
- Fondation Haïtienne de Diabète et de Maladies Cardiovasculaires, Port au Prince HT6112, Haiti; and
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Ulu H, Marakoğlu K, Akyürek F, Kızmaz M. EVALUATION OF URINARY IODINE LEVELS AND THYROID FUNCTION TESTS IN PREGNANT WOMEN AND THEIR INFANTS. ACTA ENDOCRINOLOGICA-BUCHAREST 2017; 13:47-52. [PMID: 31149147 DOI: 10.4183/aeb.2017.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Introduction In this study we aimed to evaluate urinary iodine excretion and the serum levels of thyroid-stimulating hormone (TSH), free triiodothyronine (fT3), free thyroxine (fT4) and thyroglobulin (Tg) in pregnants and their newborn infants. Materials and Methods This study was performed in Konya Faruk Sukan Children and Maternity Hospital, Konya Beyhekim State Hospital and Hospital of Selcuk University Medical Faculty. 180 pregnant women and their healthy infants born at 37-40 gestational weeks.Term infants included in this study were aged between 1-7 days, healthy. Midurination urine samples were taken into deiodinized plastic bottles and 2 mL of these samples were aliquoted to deiodinized eppendorf tubes. Results Median urinary iodine concentration (UIC) was 95.5 µg/L for pregnant women and 245 µg/L for their infants. Frequency of iodine deficiency was observed as 63.3% (n=114) (<150 µg/L) and 24.4% (n=44) (<100 µg/L) in mothers and their infants, respectively. UIC of the infants whose mothers used iodized salt was significantly higher than the one whose mothers used rocksalt (p=0.030). Conclusions It was stated in our study that UIC of pregnants was lower than the target limit (<150 µg/L), suggested by World Health Organisation (WHO) and iodine deficiency in pregnants is still a problem in our city located in the centre of Turkey. Iodine deficiency was observed in 24.4% of the infants and this prevalence suggests us that iodine deficiency is still an important health problem in infants.
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Affiliation(s)
- H Ulu
- Selcuk University Medical Faculty, Dept. of Family Medicine, Konya, Turkey
| | - K Marakoğlu
- Selcuk University Medical Faculty, Dept. of Family Medicine, Konya, Turkey
| | - F Akyürek
- Selcuk University Medical Faculty, Dept. of Biochemistry, Konya, Turkey
| | - M Kızmaz
- Selcuk University Medical Faculty, Dept. of Family Medicine, Konya, Turkey
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Osei J, Andersson M, Reijden OVD, Dold S, Smuts CM, Baumgartner J. Breast-Milk Iodine Concentrations, Iodine Status, and Thyroid Function of Breastfed Infants Aged 2-4 Months and Their Mothers Residing in a South African Township. J Clin Res Pediatr Endocrinol 2016; 8:381-391. [PMID: 27217155 PMCID: PMC5197995 DOI: 10.4274/jcrpe.2720] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/22/2016] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Lactating women and their infants are susceptible to iodine deficiency and iodine excess. In South Africa, no data exist on the iodine status and thyroid function of these vulnerable groups. METHODS In a cross-sectional study, urinary iodine concentrations (UIC), thyroid function, and breast-milk iodine concentrations (BMIC) were assessed in 100 lactating women from a South African township and their 2-4-month-old breastfed infants. Potential predictors of UIC, thyroid function, and BMIC, including household salt iodine concentrations (SIC) and maternal sodium excretion, were also investigated. RESULTS The median (25th-75th percentile) UIC was 373 (202-627) μg/L in infants and 118 (67-179) μg/L in mothers. Median household SIC was 44 (27-63) ppm. Household SIC and maternal urinary sodium excretion predicted UIC of lactating mothers. Median BMIC was 179 (126-269) μg/L. Age of infants, SIC, and maternal UIC predicted BMIC. In turn, infant age and BMIC predicted UIC of infants. Forty-two percent of SIC values were within the South African recommended salt iodine fortification level at production of 35-65 ppm, whilst 21% of SIC were >65 ppm. Thyroid-stimulating hormone, total thyroxine, and thyroglobulin concentrations in the dried whole blood spot specimens from the infants were 1.3 (0.8-1.9) mU/L, 128±33 mmol/L, and 77.1 (56.3-105.7) μg/L, respectively, and did not correlate with infant UIC or BMIC. CONCLUSION Our results suggest that the salt fortification program in South Africa provides adequate iodine to lactating women and indirectly to their infants via breast milk. However, monitoring of salt iodine content of the mandatory salt iodization program in South Africa is important to avoid over-iodization of salt.
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Affiliation(s)
- Jennifer Osei
- North-West University, Centre of Excellence for Nutrition, Potchefstroom, South Africa, Phone: +27 18 299 40 11 E-mail:
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Jalal C, Wuehler S, Osendarp S, De-Regil LM. Estimating nutrient fortification levels in condiments and seasonings for public health programs: considerations and adaptations. Ann N Y Acad Sci 2016; 1379:28-37. [PMID: 27737493 DOI: 10.1111/nyas.13227] [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: 03/30/2016] [Revised: 08/08/2016] [Accepted: 08/15/2016] [Indexed: 11/29/2022]
Abstract
Condiments and seasonings have been considered as potential vehicles for fortification in place of, or in addition to, fortifiable staple foods. Methodologies for establishing fortification programs focus primarily on use of staple foods, which are consumed in larger portions than condiments and seasonings. Some fortification models assume self-limiting consumption relative to the maximum energy consumed by target populations. However, this assumption may prove incorrect for estimating fortification concentrations of condiments and seasonings because they may only provide negligible energy. Although flavor or color may limit consumption, these limits would vary across each condiment or seasoning vehicle. In addition, the small volume of condiments and seasonings consumed relative to staple foods can lead to proportionally larger potential errors than with staple foods when measuring usual dietary intakes for establishing safe and effective fortification concentrations. This paper reviews available methods for setting fortification levels, whether or how available methods or conceptual frameworks could be adapted to condiments and seasonings, and gaps in knowledge for appropriately using condiments and seasonings as vehicles for fortification in public health.
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Affiliation(s)
- Chowdhury Jalal
- Technical Services, Micronutrient Initiative, Ottawa, Ontario, Canada
| | - Sara Wuehler
- Technical Services, Micronutrient Initiative, Ottawa, Ontario, Canada.
| | - Saskia Osendarp
- Technical Services, Micronutrient Initiative, Ottawa, Ontario, Canada
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Should urinary iodine concentrations of school-aged children continue to be used as proxy for different populations? Analysis of data from Chinese national surveys. Br J Nutr 2016; 116:1068-76. [PMID: 27498626 DOI: 10.1017/s0007114516002828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
I deficiency is a worldwide public health problem. Median urinary I concentration in school-aged children has been used globally as a proxy for all populations. This study aims to determine whether median urinary I concentration of school-aged children is an appropriate indicator of I nutritional status in different adult populations. This is a secondary data analysis of two national I Deficiency Disorder surveys (2011, 2014) and two regional surveys (in coastal areas, 2009, and in high-risk areas, 2009-2014). Population groups included in these surveys were school-aged children (8-10 years), pregnant women, lactating women, women of childbearing age and adults (men and women, 18-45 years). All participants were self-reported healthy without history of thyroid diseases or were not using thyroid medicines. The median urinary I concentration of school-aged children was matched with that of the other population at the county level. The matched populations had similar iodised salt supply, food and water I, food composition and I content in salt. Weak or moderate correlation of median urinary I concentrations was observed between school-aged children and pregnant women and between children and lactating women. However, the agreement was stronger between children and women of childbearing age and between children and adult men and women. The results could be affected by cut-off values, data aggregation level and sample size. Using median urinary I concentration of school-aged children tends to overestimate that of pregnant women and lactating women. Median urinary I concentration of school-aged children can be used for assessing I nutrition in the adult population.
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Tsang BL, Moreno R, Dabestani N, Pachón H, Spohrer R, Milani P. Public and Private Sector Dynamics in Scaling Up Rice Fortification: The Colombian Experience and its Lessons. Food Nutr Bull 2016; 37:317-328. [PMID: 27150297 DOI: 10.1177/0379572116646897] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Fortification of cereal grains with at least iron or folic acid is legislated in 85 countries worldwide. Relative to wheat and maize flour, rice fortification is relatively new and provides an opportunity to deliver essential micronutrients to populations that consume rice as a dietary staple. OBJECTIVE To describe miller and public sector experiences and perspectives on rice fortification with micronutrients in Colombia and offer recommendations for policy makers. METHODS Interviews with Colombian rice millers, research and development personnel, and public sector leaders; desk review of key documents. RESULTS In Colombia, rice fortified with micronutrients is market driven and a few very large rice millers, currently representing about 35% of the market, have voluntarily fortified rice since 2002. The technology used (spraying) is unique to Colombia and to date there is no independent verification of nutrient retention after washing and cooking rice fortified through this technology. Millers are unwilling to switch to more proven methods, such as extrusion or coating, which will incur higher capital investment and recurring costs. Despite interest from multiple stakeholders between 2002 and 2011, mandatory rice fortification is not part of the Colombian government policy as of July 2015. CONCLUSION Rice fortified with micronutrients through spraying technology has achieved moderate coverage in Colombia, but the technology is unproven, its effectiveness unknown, and public health impact likely limited. For rice fortification to be an effective nutrition intervention to improve micronutrient status, policy makers should explore standards to guide industry and improvements to regulatory capacity.
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Affiliation(s)
| | | | | | | | - Rebecca Spohrer
- 3 Global Alliance for Improved Nutrition in London, United Kingdom
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Banza BI, Lumbu JBS, Donnen P, Twite EK, Kwete DM, Kazadi CM, Ozoza JO, Habimana L, Kalenga PMK, Robert A. [Iodine concentration in cooking salt consumed in Lubumbashi and the iodine status of vulnerable people: case study of pregnant women living in underprivileged areas]. Pan Afr Med J 2016; 23:129. [PMID: 27279956 PMCID: PMC4885695 DOI: 10.11604/pamj.2016.23.129.7645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 12/05/2015] [Indexed: 11/11/2022] Open
Abstract
Introduction La consommation du sel faiblement iodé peut engendrer des troubles divers liés à la carence iodée Ce travail a pour objectif d’évaluer la teneur en iode du sel consommé à Lubumbashi et de déterminer le statut iodé des femmes enceintes, cible privilégiée de la carence iodée. Méthodes Une étude transversale descriptive a été consacrée à une analyse iodométrique d'iode dans 739 échantillons de sel collectés dans les ménages et marchés de Lubumbashi en 2014. Précédemment, l'iode urinaire a été déterminé par la technique de minéralisation au persulfate d'ammonium chez 225 femmes enceintes reçues en consultation du 15 mars 2009 au 25 avril 2011. Résultats Notre enquête a révélé 47,5% des échantillons de sels de cuisine adéquatement iodés (15 à 40 ppm), 36,9% d’échantillons faiblement iodés, 7,4% d’échantillons trop riches en iode et 8,1% des échantillons non iodés. La disponibilité en iode du sel de cuisine analysé était globalement de 54,9%, se trouvant nettement en dessous des normes OMS (90%). En mesurant l'iode urinaire chez la femme enceinte, la carence iodée (iode urinaire <150 µg/l) a été observée dans une proportion de 52%. Conclusion La faible disponibilité en iode du sel consommé à Lubumbashi pourrait être responsable d'une grande proportion de la carence iodée observée chez la femme enceinte, ce qui expose celle-ci aux risques majeurs des troubles dus à la carence en iode.
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Affiliation(s)
- Bienvenue Ilunga Banza
- Département de Chimie, Faculté des Sciences/Université de Lubumbashi, Lubumbashi, RD Congo
| | | | - Philippe Donnen
- Ecole de Santé Publique, Université Libre de Bruxelles, Bruxelles, Belgique
| | - Eugène Kabange Twite
- Département des Sciences Biomédicales et Ecole de Santé Publique, Faculté de Médecine UNILU, Lubumbashi, RD Congo
| | - Daniel Mikobi Kwete
- Département des Sciences Biomédicales et Ecole de Santé Publique, Faculté de Médecine UNILU, Lubumbashi, RD Congo
| | - Costa Mwadianvita Kazadi
- Département des Sciences Biomédicales et Ecole de Santé Publique, Faculté de Médecine UNILU, Lubumbashi, RD Congo
| | - Jean Okolonken Ozoza
- Département de Sociologie et Anthropologie, Faculté des Sciences Sociales UNILU, Lubumbashi, RD Congo
| | - Laurence Habimana
- Département de Sociologie et Anthropologie, Faculté des Sciences Sociales UNILU, Lubumbashi, RD Congo
| | | | - Annie Robert
- Département de Sociologie et Anthropologie, Faculté des Sciences Sociales UNILU, Lubumbashi, RD Congo
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Piątkowska E, Kopeć A, Bieżanowska-Kopeć R, Pysz M, Kapusta-Duch J, Koronowicz AA, Smoleń S, Skoczylas Ł, Ledwożyw-Smoleń I, Rakoczy R, Maślak E. The Impact of Carrot Enriched in Iodine through Soil Fertilization on Iodine Concentration and Selected Biochemical Parameters in Wistar Rats. PLoS One 2016; 11:e0152680. [PMID: 27043135 PMCID: PMC4820277 DOI: 10.1371/journal.pone.0152680] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 03/17/2016] [Indexed: 11/19/2022] Open
Abstract
Iodine is one of the trace elements which are essential for mammalian life. The major objective of iodine biofortification of plants is to obtain food rich in this trace element, which may increase its consumption by various populations. Additionally, it may reduce the risk of iodine deficiency diseases. In this research for the first time we have assessed the bioavailability of iodine from raw or cooked carrot biofortified with this trace element on iodine concentration in selected tissues and various biochemical parameters as well as mRNA expression of some genes involved in iodine metabolism in Wistar rats. Statistically, a significantly higher iodine level was determined in urine, faeces and selected tissues of rats fed a diet containing biofortified raw carrot as compared to a diet without iodine and a diet containing control cooked carrot. Biofortified raw carrot significantly increased triiodothyronine concentration as compared to animals from other experimental groups. The highest thyroid stimulating hormone level was determined in rats fed control cooked carrots. mRNA expression of selected genes was affected by different dietary treatment in rats’ hearts. Biofortified raw and cooked carrot could be taken into account as a potential source of iodine in daily diets to prevent iodine deficiency in various populations.
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Affiliation(s)
- Ewa Piątkowska
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture in Krakow, Balicka,122, 30–149, Krakow, Poland
- * E-mail:
| | - Aneta Kopeć
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture in Krakow, Balicka,122, 30–149, Krakow, Poland
| | - Renata Bieżanowska-Kopeć
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture in Krakow, Balicka,122, 30–149, Krakow, Poland
| | - Mirosław Pysz
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture in Krakow, Balicka,122, 30–149, Krakow, Poland
| | - Joanna Kapusta-Duch
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture in Krakow, Balicka,122, 30–149, Krakow, Poland
| | - Aneta Agnieszka Koronowicz
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture in Krakow, Balicka,122, 30–149, Krakow, Poland
| | - Sylwester Smoleń
- Unit of Plant Nutrition, Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, al. 29 Listopada 54, 31–425, Krakow, Poland
| | - Łukasz Skoczylas
- Department of Fruit, Vegetable and Mushroom Processing, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, 30–149, Krakow, Poland
| | - Iwona Ledwożyw-Smoleń
- Unit of Biochemistry, Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Al. 29 Listopada 54, 31–425, Krakow, Poland
| | - Roksana Rakoczy
- Unit of Plant Nutrition, Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, al. 29 Listopada 54, 31–425, Krakow, Poland
| | - Edyta Maślak
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30–060, Krakow, Poland
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Lebanese children are iodine deficient and urinary sodium and fluoride excretion are weak positive predictors of urinary iodine. Eur J Nutr 2015; 56:749-755. [PMID: 26650194 DOI: 10.1007/s00394-015-1120-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 11/23/2015] [Indexed: 12/11/2022]
Abstract
PURPOSE To assess iodine and fluoride status among Lebanese children. METHODS A nationally representative cross-sectional study of 6- to 10-year-old schoolchildren was conducted using multistage cluster sampling. Spot urine samples were collected from 1403 children, and urinary iodine, fluoride, creatinine and sodium levels were measured. Salt samples from markets (n = 30) were tested for iodine concentration by titration. RESULTS Median urinary iodine concentration was 66.0 µg/l, indicating mild deficiency, and almost 75 % of Lebanese children had a urinary iodine concentration (UIC) <100 µg/l. UIC was higher among children from private schools and in areas of higher socioeconomic status. Most salt samples were fortified at levels far below the legislated requirement, and 56 % of samples contained less than 15 ppm iodine. Fluoride-to-creatinine ratio (F/Cr) was 0.250 (0.159-0.448) mg/g. There were weak positive correlations between UIC and urinary sodium (r 2 = 0.039, P value <0.001) and UIC and urinary fluoride (r 2 = 0.009, P value <0.001). CONCLUSIONS Lebanese elementary school children are iodine deficient due to inadequately iodized salt. The weak correlation between UIC and urinary sodium suggests most dietary iodine does not come from iodized salt. The poor correlation between UIC and urinary fluoride suggests that fluoride intake is not affecting iodine metabolism. Efforts are needed in Lebanon to improve industry compliance with salt fortification through improved monitoring and enforcement of legislation.
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Santoro JD, Nespor C, Poole RL, Kerner JA. Iodine Supplementation for Pediatric Patients Receiving Long-Term Parenteral Nutrition. Nutr Clin Pract 2015; 31:245-9. [DOI: 10.1177/0884533615611846] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Jonathan D. Santoro
- Stanford University School of Medicine, Department of Pediatrics, Palo Alto California
| | - Colleen Nespor
- Lucile Packard Children’s Hospital Stanford, Pharmacy Department, Palo Alto, California
| | - Robert L. Poole
- Lucile Packard Children’s Hospital Stanford, Pharmacy Department, Palo Alto, California
| | - John A. Kerner
- Stanford University School of Medicine, Department of Pediatrics, Division of Gastroenterology, Palo Alto, California
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Nazeri P, Mirmiran P, Shiva N, Mehrabi Y, Mojarrad M, Azizi F. Iodine nutrition status in lactating mothers residing in countries with mandatory and voluntary iodine fortification programs: an updated systematic review. Thyroid 2015; 25:611-20. [PMID: 25811835 DOI: 10.1089/thy.2014.0491] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND The aim of this review is to assess data available on iodine nutrition status in lactating mothers residing in countries with mandatory and voluntary iodine fortification programs and/or iodine supplementation. SUMMARY A systematic review was conducted by searching articles published between 1964 and 2013 in Pub Med, ISI Web, and Cochrane Library using iodine nutrition, lactation, iodine supplementation, and iodine fortification as keywords for titles and/or abstracts. Relevant articles were included if they reported urinary iodine concentration (UIC) in lactating mothers and, if determined, the type of iodine fortification program and/or iodine supplementation. Forty-two studies met the inclusion criteria. Among these, 21 studies assessed lactating mothers in countries with a mandatory iodine fortification program, 17 studies were from countries with voluntary and/or without iodine fortification programs, and four studies assessed iodine nutrition status in lactating mothers undergoing iodine supplementation. Among countries with mandatory iodine fortification programs, the range of salt iodization level in lactating mothers with a UIC <100 μg/L was between 8 and 40 ppm, whereas among lactating mothers with UIC >100 μg/L, it was between 15 and 60 ppm. Levels of UIC <100 μg/L were observed among lactating women in India, Denmark, Mali, New Zealand, Australia, Slovakia, Sudan, and Turkey, whereas in countries such as Chile, Iran, Mongolia, New Guinea, and Nigeria, the median or mean of UIC was >100 μg/L. There was a median or mean UIC <100 μg/L in nearly all lactating mothers residing in countries where implementation of universal salt iodization program was voluntary, including Switzerland, Australia, New Zealand, Ireland, and Germany. However, in some countries with voluntary iodine fortification programs, such as the United States, Spain, and Japan, a mean or median UIC of >100 μg/L has been reported. CONCLUSIONS Although universal salt iodization is still the most feasible and cost-effective approach for iodine deficiency control in pregnant and lactating mothers, UIC in lactating mothers of most countries with voluntary programs and in areas with mandatory iodine fortification is still within the iodine deficiency range, indicating that iodine supplementation in daily prenatal vitamin/mineral supplements in lactating mothers is warranted. However, further investigations are still recommended in this regard.
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Affiliation(s)
- Pantea Nazeri
- 1Nutrition and Endocrine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- 2Obesity Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parvin Mirmiran
- 1Nutrition and Endocrine Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- 2Obesity Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Niloofar Shiva
- 3Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yadollah Mehrabi
- 4Department of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Mojarrad
- 3Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fereidoun Azizi
- 3Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Effect of lettuce biofortified with iodine by soil fertilization on iodine concentration in various tissues and selected biochemical parameters in serum of Wistar rats. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.02.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Brady K, Dickinson SC, Hollander AP. Changes in Chondrogenic Progenitor Populations Associated with Aging and Osteoarthritis. Cartilage 2015; 6:30S-5S. [PMID: 27340514 PMCID: PMC4481384 DOI: 10.1177/1947603515574838] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Chondrogenic progenitor populations, including mesenchymal stem cells, represent promising cell-based transplantation or tissue engineering therapies for the regeneration of damaged cartilage. Osteoarthritis (OA) predominantly affects the elderly and is a leading cause of disability worldwide. Advancing age is a prominent risk factor that is closely associated with the onset and progression of the disease. Understanding the influence that aging and OA have on chondrogenic progenitor cells is important to determine how these processes affect the cellular mechanisms of the cells and their capacity to differentiate into functional chondrocytes for use in therapeutic applications. Here, we review the effect of age- and OA-related changes on the growth kinetics and differentiation potential of chondrogenic progenitor cell populations. Aging differentially influences the proliferative potential of progenitor cells showing reduced growth rates with increased senescence and apoptotic activity over time, while chondrogenesis appears to be independent of donor age. Cartilage tissue affected by OA shows evidence of progenitor populations with some potential for repair, however reports on the proliferative propensity of mesenchymal stem cells and their chondrogenic potential are contradictory. This is likely attributed to the narrow age ranges of samples assessed and deficits in definitively identifying donors with OA versus healthy patients across a wide scope of advancing ages. Further studies that investigate the mechanistic effects of chondrogenic progenitor populations associated with aging and the progression of OA using clearly defined criteria and age-matched control subject groups are crucial to our understanding of the clinical relevance of these cells for use in cartilage repair therapies.
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Affiliation(s)
- Kyla Brady
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Sally C. Dickinson
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
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Craps J, Wilvers C, Joris V, De Jongh B, Vanderstraeten J, Lobysheva I, Balligand JL, Sonveaux P, Gilon P, Many MC, Gérard AC, Colin IM. Involvement of nitric oxide in iodine deficiency-induced microvascular remodeling in the thyroid gland: role of nitric oxide synthase 3 and ryanodine receptors. Endocrinology 2015; 156:707-20. [PMID: 25406019 DOI: 10.1210/en.2014-1729] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Iodine deficiency (ID) induces microvascular changes in the thyroid gland via a TSH-independent reactive oxygen species-hypoxia inducible factor (HIF)-1α-vascular endothelial growth factor (VEGF) pathway. The involvement of nitric oxide (NO) in this pathway and the role of calcium (Ca(2+)) and of ryanodine receptors (RYRs) in NO synthase 3 (NOS3) activation were investigated in a murine model of goitrogenesis and in 3 in vitro models of ID, including primary cultures of human thyrocytes. ID activated NOS3 and the production of NO in thyrocytes in vitro and increased the thyroid blood flow in vivo. Using bevacizumab (a blocking antibody against VEGF-A) in mice, it appeared that NOS3 is activated upstream of VEGF-A. L-nitroarginine methyl ester (a NOS inhibitor) blocked the ID-induced increase in thyroid blood flow in vivo and NO production in vitro, as well as ID-induced VEGF-A mRNA and HIF-1α expression in vitro, whereas S-nitroso-acetyl-penicillamine (a NO donor) did the opposite. Ca(2+) is involved in this pathway as intracellular Ca(2+) flux increased after ID, and thapsigargin activated NOS3 and increased VEGF-A mRNA expression. Two of the 3 known mammalian RYR isoforms (RYR1 and RYR2) were shown to be expressed in thyrocytes. RYR inhibition using ryanodine at 10μM decreased ID-induced NOS3 activation, HIF-1α, and VEGF-A expression, whereas RYR activation with ryanodine at 1nM increased NOS3 activation and VEGF-A mRNA expression. In conclusion, during the early phase of TSH-independent ID-induced microvascular activation, ID sequentially activates RYRs and NOS3, thereby supporting ID-induced activation of the NO/HIF-1α/VEGF-A pathway in thyrocytes.
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Affiliation(s)
- J Craps
- Pôle de Morphologie (J.C., C.W., B.D.J., J.V., M.-C.M., I.M.C.), de Pharmacologie et Thérapeutique (V.J., I.L., J.-L.B., P.S.), et d'Endocrinologie, Diabète et Nutrition (P.G.), Institut de Recherche Expérimentale et Clinique, Secteur des Sciences de la Santé, Faculté de Médecine, Université catholique de Louvain, 1200, Brussels, Belgium; and Service d'Endocrino-Diabétologie (A.-C.G., I.M.C.), Centre Hospitalier Régional, 7000, Mons-Hainaut, Belgium
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