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Background:: Potassium iodide is a chemical form of iodine used to supplement iodine intake in edible salts to prevent iodine deficiency disorders. Objectives: The aim of this study was to determine the iodine and potassium iodide content of different salt brands sold in major markets in Enugu state and compare these values with the national standard for retail-level salts. Methods: Six salt brands, including three local and three foreign brands, were randomly purchased from the market in Enugu state. The iodometric titration method was used in the analytical laboratory to determine the salt samples' iodine and potassium iodide content. One-sample student t-test was used to compare the results with the national standards for iodine and potassium iodide, while Analysis of Variance and Turkey HSD tests were used to compare the mean values of the different salt samples. Statistical significance was set at p < 0.05. Results: The iodine content of the salt samples ranged from 30.55 to 45.25 ppm, and the potassium iodide content ranged from 24.10 to 47.60 ppm. All the samples met the national standard requirement for iodine (>30 ppm), but all were below the standard for potassium iodide (>50 ppm). Conclusion: The iodine levels in major salts sold in major markets in Enugu state met the National standard, but the potassium iodide content fell short of the requirements set by food law in Nigeria. [ABSTRACT FROM AUTHOR]

Introduction: In India, the entire population is prone to iodine deficiency disorders (IDD) due to iodine deficiency in the soil of the subcontinent and consequently, the food derived from it. People with a diagnosis of hypothyroidism report a decreased quality of life (QOL). The study aimed to determine the prevalence and QOL of people who were diagnosed with IDD. Methods: A total of 2,360 people residing among 252 houses were surveyed using the nonprobability purposive sampling technique. Results: Out of 2,360 people surveyed, 16 cases were identified that were diagnosed with IDD. Thus, the prevalence of diagnosed IDD in the selected villages was 0.68%. Among 16 diagnosed IDD cases, most of them (56.2%) belonged to the age group of 46 to 65 years and were females (93.8%), 56.2% had an annual income of less than 30,000 INR. Among the 16 diagnosed IDD cases, the majority (75%) were diagnosed with hypothyroidism and were on treatment. Most of them (81.2%) checked their blood TSH once in three months, 18.8% have never done blood investigations after diagnosis, and most of them were using iodized salt for cooking. Symptoms experienced by the diagnosed cases of IDD were fatigue (81.2%), lack of sleep (56.2%), appetite changes (50%), intolerance to heat/cold (31.2%), and loss of hair (43.8%). The QOL is not affected negatively among the diagnosed cases, as all of them have scored fairly well in all the domains of QOL. Conclusions: IDDs are a very common health problem affecting the community people, which is more prevalent among females. [ABSTRACT FROM AUTHOR]

The article reports that Goiter, a common clinical manifestation associated with thyroid disease with description of hypothyroidism and hyperthyroidism. Topics include increase in TSH production in response to a deficiency of thyroid hormones through the administration of thyroxine and iodine supplements; and hyperplasia and involution gives rise to the appearance of nodules multinodular goiter.

Introduction: Thyroid swellings are one of the most common swellings in the neck. They pose a major problem in developing countries like India, considering the high endemicity for iodine deficiency disorders. Thyroid gland is affected in many conditions. Out of these, majority are benign while less than 5% are malignant. Multiple noninvasive and invasive diagnostic tests are available for the diagnosis of thyroid swelling. However, at present, FNAC is considered the gold standard investigation. Despite the high sensitivity and specificity, FNAC has its limitations. Histopathological examination of surgically excised thyroid swelling is the confirmatory gold standard to determine the pathology of the thyroid gland. Material and method: This prospective and observational study was conducted in the Department of Otorhinolaryngology (ENT) in collaboration with the Department of Pathology in a tertiary care hospital and medical school. A total of seventy patients were included. Results: The diagnosis on FNAC was correlated with histopathology. Statistical analysis showed FNAC had a sensitivity of 83.3%, specificity of 100%, positive predictive value of 100%, negative predictive value of 96.7%. However, the overall accuracy in this study was determined to be 95.71%. Results were found to be statistically significant (P < 0.05). Conclusions: The diagnostic role of FNAC in thyroid lesions is of utmost importance in making preoperative diagnosis. FNAC was found to be highly sensitive and specific for diagnosing thyroid lesions but the final HPE is considered as a gold standard. [ABSTRACT FROM AUTHOR]

Introduction Iodine deficiency is one of the most important public health problems in the world. It mostly affects pregnant women and children. The lack of iodine leads to an increase in the numbers of perinatal mortality and mental retardation. Material and methods In 2012–2014, a survey was carried out of 2,342 women, of whom 2284 were analyzed for salt to measure the content of iodine, and 2,242 women of reproductive age had their urine samples analyzed by the cerium-arsenite method based on the Sandell-Kolthoff reaction. Determination of the medical and social effectiveness of biological monitoring of IDS was carried out in 3 stages. Results The study revealed that in the eastern Kazakhstan region the relative risk (RR) of overall prevalence of iodine deficiency among women was 1.1 times higher (95% ID: 0.35–3.61; Z statistic = 0.192) among household respondents (≤15mkg/kg). In the Pavlodar region, the RR of the prevalence of total iodine deficiency is 0.5 times higher in households where the salt was not sufficiently iodized. In the Zhambyl region the RR of the iodine deficiency prevalence was about twice as high due to insufficient iodized salt. Conclusions The introduction of biological monitoring of IDS among women, especially pregnant women, may positively affect the detection of the risk limits for the birth of infants with reduced mental abilities or other diseases during pregnancy, using timely targeted preventive measures to exclude factors that affect the spread of IDS.

Background: An alternative feasible and convenient method of assessing iodine intake is needed.Objective: The aim of this study was to examine the utility of serum iodine for assessing iodine intake in children.Methods: One blood sample and 2 repeated 24-h urine samples (1-mo interval) were collected from school-age children in Shandong, China. Serum free triiodothyronine (FT3), free thyroxine (FT4), thyroid-stimulating hormone (TSH), thyroglobulin (Tg), total iodine (StI), and non-protein-bound iodine (SnbI) concentrations and urine iodine (UIC) and creatinine (UCr) concentrations were measured. Iodine intake was estimated based on two 24-h urine iodine excretions (24-h UIE). Associations between serum iodine and other factors were analyzed using the Spearman rank correlation test. Receiver operating characteristic (ROC) curves were used to illustrate diagnostic ability of StI and SnbI.Results: In total, 1686 children aged 7-14 y were enrolled. The median 24-h UIC for the 2 collections was 385 and 399 μg/L, respectively. The median iodine intake was estimated to be 299 μg/d and was significantly higher in boys than in girls (316 μg/d compared with 283 μg/d; P < 0.001). StI and SnbI were both positively correlated with FT4 (ρ = 0.30, P < 0.001; and ρ = 0.21, P < 0.001), Tg (ρ = 0.21, P < 0.001; and ρ = 0.19, P < 0.001), 24-h UIC (ρ = 0.56, P < 0.001; and ρ = 0.47, P < 0.001), 24-h UIE (ρ = 0.46, P < 0.001; and ρ = 0.49, P < 0.001), urine iodine-to-creatinine ratio (ρ = 0.58, P < 0.001; and ρ = 0.62, P < 0.001), and iodine intake (ρ = 0.49, P < 0.001; and ρ = 0.53, P < 0.001). The areas under the ROC curves for StI and SnbI for the diagnosis of excessive iodine intake in children were 0.76 and 0.77, respectively. The optimal StI and SnbI threshold values for defining iodine excess in children were 101 and 56.2 μg/L, respectively.Conclusions: Serum iodine was positively correlated with iodine intake and the serum FT4 concentration in children. It is a potential biomarker for diagnosing excessive iodine intake in children. This trial was registered at clinicaltrials.gov as NCT02915536. [ABSTRACT FROM AUTHOR]

Abstract Iodine deficiency disorders include a wide range of metabolic and nonmetabolic disorders including goiter. To control IDDs, the World Health Organization and responsible agencies in countries established daily iodine uptake. Almost all the countries in the world provide the required iodine through salt iodisation. IDDs are not completely eradicable, so monitoring the salt iodisation programme is necessary for control of IDDs. In Iran, a salt iodisation programme was started in 1996. In this study, we took salt samples from all legally produced salt brands in Iran in 30 provinces and measured iodine concentration. The results of the monitoring programme for iodine concentration in schoolchildren's urine was used to compare accessibility to iodized salts and health outcomes. The results show that more than 80% of available salts have a suitable or acceptable concentration of iodine. Despite large variance in iodine concentration in available salt in some provinces, the median of iodine concentration in salts is within an acceptable range. Also, the urinary concentration of iodine (national median = 161) confirms that shortage of iodine intake is very low in Iran. The high rate of salt consumption of the Iranian people also has a significant effect on iodine uptake, but can lead to hyperthyroidism and hypertension that must be controlled. [ABSTRACT FROM AUTHOR]

Introduction. Iodine deficiency is one of the most important public health problems in the world. It mostly affects pregnant women and children. The lack of iodine leads to an increase in the numbers of perinatal mortality and mental retardation. Materials and method. In 2012-2014, a survey was carried out of 2,342 women, of whom 2284 were analyzed for salt to measure the content of iodine, and 2,242 women of reproductive age had their urine samples analyzed by the ceriumarsenite method based on the Sandell-Kolthoff reaction. Determination of the medical and social effectiveness of biological monitoring of IDS was carried out in 3 stages. Results. The study revealed that in the eastern Kazakhstan region the relative risk (RR) of overall prevalence of iodine deficiency among women was 1.1 times higher (95% ID: 0.35-3.61; Z statistic = 0.192) among household respondents (≤15mkg/kg). In the Pavlodar region, the RR of the prevalence of total iodine deficiency is 0.5 times higher in households where the salt was not sufficiently iodized. In the Zhambyl region the RR of the iodine deficiency prevalence was about twice as high due to insufficient iodized salt. Conclusions. The introduction of biological monitoring of IDS among women, especially pregnant women, may positively affect the detection of the risk limits for the birth of infants with reduced mental abilities or other diseases during pregnancy, using timely targeted preventive measures to exclude factors that affect the spread of IDS. [ABSTRACT FROM AUTHOR]

Background: The necessity of iodine supplementation in lactating mothers residing in countries with sustained salt iodization programs for iodine sufficiency of breast-fed infants remains unclear. The aims of this study were to investigate the effect of iodine supplementation on iodine status and growth parameters of lactating mothers and breast-fed infants and to compare these data with that of formula-feeding mothers and their infants during the first year of infancy. Methods: In this multicenter, double-blinded, randomized clinical trial conducted in four healthcare centers in Tehran (Iran), healthy lactating mothers and their term newborns aged 3–5 days were randomly assigned to treatment groups: placebo, 150 μg/day iodine, or 300 μg/day iodine. They were followed up for 12 months. Formula-fed infants aged 30–45 days and their mothers were randomly selected from the same centers. The primary outcomes were maternal and infant urinary iodine concentrations (UICs), breast-milk iodine concentrations (BMICs), and infant growth parameters, measured at 1, 2, 4, 6, 9, and 12 months during routine health visits. The formula-fed group was assessed at 2, 4, 6, 9, and 12 months of age. Analysis was by per protocol principle using mixed-effects models. Results: Mother–newborn pairs (n = 180) in treatment groups and partially/exclusively formula-feeding mother–infant pairs (n = 60) participated between October 2014 and January 2016. Median baseline UICs in the treatment groups were 84 μg/L (interquartile range [IQR] 41–143 μg/L) in mothers and 208 μg/L (IQR 91–310 μg/L) in their infants. The values in the formula-fed group were 76 μg/L (IQR 40–144 μg/L) in mothers and 121 μg/L (IQR 66–243 μg/L) in infants. The 300 μg/day iodine group showed significantly higher UICs and BMICs than did the other treatment groups; infant UICs in the 150 μg/day iodine, placebo, and formula-fed groups were similar. Infants in all groups showed iodine sufficiency (median UIC ≥100 μg/L) throughout the study period. Anthropometric measurements were similar between the treatment and formula-fed groups over the study period, except at the last follow-up visit at 12 months. Conclusion: Supplementation of breast-feeding mothers with either 300 or 150 μg/day iodine improved their iodine status. However, the iodine status of infants in all groups studied indicated iodine sufficiency during the first year of infancy, demonstrating that in countries with effective salt iodization program, iodine supplementation for lactating mothers is unnecessary. [ABSTRACT FROM AUTHOR]

Background: Pregnant women are particularly vulnerable to iodine deficiency. Considering the rural–urban disparities in nutritional status in Pakistan, this study aimed to assess regional influences on nutritional iodine status of pregnant women in Pakistan. Methods: Data were collected from 1246 pregnant women in all trimesters of pregnancy who visited antenatal clinics for routine checkups in five Khyber Pakhtunkhwa province districts. Information concerning iodized salt intake and knowledge of iodine deficiency disorders (IDD) was obtained through an interview questionnaire. Goiter and urinary iodine concentration (UIC) levels were assessed by the palpation method and Sandell–Kolthoff reaction, respectively. Logistic regression analysis was used to quantify associations between residence (rural–urban), pregnancy trimester, and previous pregnancy outcomes with knowledge about IDD, iodized salt intake, presence of goiter, and UIC <150 μg/L. Results: Among study participants, 87.7% had no knowledge about IDD, and only 21.0% were consuming iodized salt. Goiter was present in 25.5% of the women. The median UIC level was 131 μg/L, and 41.3% of study participants had a UIC ≥150 μg/L. There were no significant differences between pregnant women from rural and urban settings in regions with a solid socioeconomic status with respect to knowledge about IDD, iodized salt intake, iodine deficiency, and goiter prevalence. Urban–rural differences were observed only in socioeconomically disadvantaged districts. Only pregnant women living in the Lakki Marwat district had higher odds of having knowledge of IDD and iodized salt intake than those from rural regions. Trimesters of pregnancy and previous pregnancy outcomes had no significant effect on the outcome measures. Conclusions: Relative to a national nutrition survey conducted in Pakistan in 2011, the results from this study indicate that UIC levels remained stable with mild iodine deficiency, whereas rates of goiter and iodized salt intake remained high and low, respectively, especially in rural areas. Rural–urban disparities were observed only in socioeconomically disadvantaged districts, and these disparities limit the effectiveness of the IDD prevention program in rural areas in Pakistan. Thus, implementation of mandatory salt iodization requires improvement, and program effectiveness should be continuously monitored to prevent adverse health effects of iodine deficiency during pregnancy. [ABSTRACT FROM AUTHOR]

Objective: The National Iodine and Salt Intake Survey (NISI) 2014-2015 was undertaken to estimate household iodised salt coverage at national and sub-national levels in India.Design: Cross-sectional survey with multistage stratified random sampling.Setting: India was divided into six geographic zones (South, West, Central, North, East and North-East) and each zone was further stratified into rural and urban areas to yield twelve distinct survey strata.Subjects: The target respondent from each household was selected as per predefined priority; wife of the household head, followed by women of reproductive age, followed by any adult available during the visit.Results: Households (n 5717) were surveyed and salt samples (n 5682) were analysed. Household coverage of iodised salt (iodine≥5 ppm) was 91·7 (95 % CI 91·0, 92·7) %. Adequately iodised salt (iodine≥15 ppm) was consumed in 77·5 (95 % CI 76·4, 78·6) % of households. Significant differences in coverage were seen across six geographic regions, with North and North-East zones on the verge of achieving the universal salt iodisation target of >90 % coverage. Coverage of households with adequately iodised salt (adjusted OR; 95 % CI) was significantly less in rural households (0·55; 0·47, 0·64), lower/backward castes (0·84; 0·72, 0·98), deprived households (0·72; 0·61, 0·85) as assessed by multidimensional poverty index, households with non-diverse diet (0·73; 0·62, 0·86) and households using non-packaged salt (0·48; 0·39, 0·59) and non-refined salt (0·17; 0·15, 0·20).Conclusions: India is within striking reach of achieving universal salt iodisation. However, significant differentials by rural/urban, zonal and socio-economic indicators exist, warranting accelerated efforts and targeted interventions for high-risk groups. [ABSTRACT FROM AUTHOR]

Iodine deficiency disorders (IDDs) constitute a significant public health problem globally. In India, the entire population is prone to IDDs due to deficiency of iodine in the soil of the sub-continent and thus both animal and plant source food grown on the iodine-deficient soil. IDDs encompass the spectrum of disability and disease and include goitre, cretinism, hypothyroidism, abortion, stillbirth, brain damage, learning disabilities, mental retardation, psychomotor defects, hearing and speech impairment. Iodine deficiency is known to be the single largest cause of preventable brain damage. IDDs with their causal association with brain development, cognition, and learning disabilities impair the human resource development and progress of the country. The children born in iodine-deficient regions on an average have 13.5 intelligence quotient (IQ) points lesser than children born in iodine-sufficient regions. IDD control programme in India is a public health success story, with 92 per cent of the population consuming iodized salt. The partnership between government agencies, academic institutions, salt industry, development agencies and civil society has been key to achieve this success story. The sustainable elimination of iodine deficiency in India is within reach, what is required is accelerated and coordinated effort by all key stakeholder at national and State level. [ABSTRACT FROM AUTHOR]

The National Institute of Nutrition (NIN) has reached a remarkable milestone of completing 100 years of exemplary service to the nation. The long journey that started in a humble one-room laboratory at Coonoor (now in Tamil Nadu) in 1918 to a colossus of the nutrition research in the country today is dotted with several interesting vignettes. The NIN has always been at the forefront of need-based, pragmatic research. Its large-scale community-based interventions have been of great practical value in the nation's fight against malnutrition. The evolution of nutrition as a modern science almost coincides with the growth of the Institute. Being the oldest in the fraternity of institutes under the Indian Council of Medical Research (ICMR), the NIN has grown from strength to strength due to the sheer relevance of its contributions in furthering nutrition science and promoting public health in the country. This article provides a historical overview of the evolution and contributions of ICMR-NIN in the areas of nutrition, food safety, public health and policy. [ABSTRACT FROM AUTHOR]

Introduction: Iodine deficiency is not only responsible for endemic goiter but it is the single most common cause of preventable mental retardation and brain damage in the world today. Wide range of variation exists in household consumption of iodized salt across different states which warrant the need of the present study. Aim: To assess the knowledge, attitude and practices regarding household consumption of iodized salt and associated factors among women in an urban area of Tripura. Materials and Methods: A community based cross-sectional study was conducted among 260 randomly selected women, who were involved in day to day household cooking, residing within the field practice area of Urban Health Training Centre (UHTC), Dukli under Department of Community Medicine, Tripura Medical College and Dr BRAM Teaching Hospital, for a period of three months. A predesigned, pretested, semi-structured interview schedule was used for data collection and analysed using SPSS version 16.0 software. Data were represented in the form of frequency distribution tables; Chi-square test and Fisher's-exact test was used to see the associations as and when required. Results: In this study, majority (64.62%) of the participants have not heard of iodized salt but showed good practice (87.3%) regarding iodized salt consumption. Good knowledge, attitude was significantly associated with higher age group, education and socio-economic class of the participants. Conclusion: Although majority of the participants showed good knowledge and practice related to iodized salt consumption at household level, time of adding salt while cooking was still faulty in most of them. [ABSTRACT FROM AUTHOR]

This review focuses on fluorosis and iodine deficiency disorders, two serious, highly prevalent metabolic disorders that are under-reported. These are caused by the two elements of the halogen family, fluorine and iodine. The former in excess and the latter in deficiency are the cause for concern. Excess fluoride (F-) consumption through untreated groundwater was the main reason for fluorosis and defluoridation of water was the focus to provide safe water with F- < 1.0 mg/l. On the other hand, iodine deficiency in diet was due to agricultural crops grown in iodine-deficient soil, and iodization of cooking salt was identified as the way forward to attain iodine sufficiency (i.e. 15 ppm in iodized salt). The two diseases are addressed through structured national programmes, but the implementation unfortunately is in a compartmentalized manner. The major issue is that both F- excess and iodine deficiency caused goitre. Besides, other disorders identical in clinical manifestations, also occur. This review discusses the issues to address the diseases with better understanding that has emerged from the scientific information available for correct diagnosis and management of patients in an integrated manner. [ABSTRACT FROM AUTHOR]

The core objective of this study was to prepare iodized bread by using iodized salt and potassium iodide (KI) to fulfill Recommended Daily Intake (RDI) of iodine. Triplicate level of each fortificant was added in separate treatments in different concentrations with an aim that 2 slices of bread provide RDI of iodine. The prepared samples were analyzed for stability of iodine by spectrophotometric method and for sensory attributes by panel of judges. Results showed good retention of iodine in bread with 15-20% loss of iodine in final product after processing. A slight level of potassium was increased in treatments in which KI was used while other minerals profile was not affected by fortificants and showed no significant behaviour after examining the results statistically. [ABSTRACT FROM AUTHOR]

Iodine is an essential component for thyroid hormone synthesis. Epidemiological investigations have demonstrated that maternal mild iodine deficiency (ID)-induced hypothyroxinemia can affect intellectual and behavioral function in offspring. There is no definitive evidence demonstrating the effects of maternal iodine supplementation on neurobehavioral function in regional areas with mild ID. Thus, we aimed to clarify the effects of maternal mild ID and iodine supplementation on motor coordination in offspring and illuminate the underlying molecular mechanisms. Animal models of maternal mild ID and iodine supplementation were generated by providing Wistar rats an iodine-deficient diet and deionized water supplemented with potassium iodide during pregnancy and lactation. We found that mild ID-induced hypothyroxinemia led to a shorter latent time before falling down from the rotarod, a longer time to traverse the balance beam and poorer wire grip of the forelimbs, which imply motor coordination dysfunction. However, these impairments in the offspring were improved by iodine supplementation during pregnancy and lactation. We further observed that the ultrastructure and dendritic tree morphology of cerebellar Purkinje cells were altered in mild ID-induced hypothyroxinemia but that these changes could be reversed by iodine supplementation. Maternal mild ID and iodine supplementation also affected expression of the mGluR1 signaling pathway in offspring. Together, iodine supplementation during pregnancy and lactation can improve motor coordination in offspring by modulating the mGluR1 signaling pathway in mild ID-induced hypothyroxinemia rats. [ABSTRACT FROM AUTHOR]

Introduction: Iodine deficiency disorders (IDD) during pregnancy may impair the neurological development of the fetus. The aim of this study is to determine the iodine status among pregnant women (PW) in Sarawak after introduction of mandatory universal salt iodisation (USI) for seven years. Methods: A total of 508 first trimester PW attending government Maternal and Child Health Care clinics in all 11 divisions in Sarawak between 1st April and 15th June 2015 were recruited. Urine samples were obtained and analysed for urinary iodine concentration (UIC) using the modified Sandell-Kolthoff reaction method. For pregnant women, an adequate iodine intake was defined as a median UIC between 150-249 µg/L according to the WHO/UNICEF/ICCIDD's criterion. For further analyses, the 11 divisions were then combined into 3 regions, namely Northern (Miri, Bintulu, Limbang), Central (Kapit, Mukah, Sibu, Sarikei, Betong) and Southern (Kota Samarahan, Kuching, Sri Aman). Results: The median UIC of the PW in Sarawak was 105.6 µg/L, indicating iodine deficiency. A total of 330 (65.0%) PW had UIC<150 µg/L. In terms of urinary iodine levels by region, the median UIC in Northern, Central and Southern regions were 136.3 µg/L, 85.5 µg/L and 97.4 µg/L respectively. The differences in median UIC between regions were significant. In addition, the Northern region (p = 0.001), Malay/Melanau ethnicity (p = 0.015) and parous parity (p = 0.014) were significantly associated with higher median UIC. No significant association was found for locality, age nor gravida. Conclusions: This study indicates inadequate iodine status among PW in Sarawak despite seven years of mandatory USI. In fact, the majority of PW appear not to be protected against IDD and its consequences. In future, a comprehensive study should be carried out to determine the levels of iodine in salt at the retail outlets, villages and households in Sarawak. [ABSTRACT FROM AUTHOR]

Introduction: Iodine Deficiency Disorders (IDDs) are one of the most important disorders of childhood affecting the brain development. It is marked by a diffuse enlargement of the thyroid gland, known as goiter. A district is said to be endemic for goiter when its prevalence is >10% in the general population. Despite several national policies to rectify the problem, goiter seems to continue to persist as a major public health problem. Aim: This study was done to evaluate the prevalence of clinical goiter among school going children and their salt consumption pattern. Materials and Methods: This cross-sectional study was carried out among 670 school students between 6-14 years of age studying in rural schools of Kancheepuram, Tamil Nadu, India. The students were selected from five schools. The sampling method used was Probability Proportional to Size (PPS). A pretested structured interview schedule was used to collect information regarding the sociodemographic factors. Clinical examination was carried out and salt samples were procured for testing the iodine levels. Data collected was analysed using SPSS version 17.0. Results: In present study, 388 (57.9%) were males and 282 (42.1%) were females and belonged to the age group of 6-14 years. The overall prevalence of goiter was 6.6%. About 43.5% of the participants consumed salt procured from petty shops. In 46.6% of the samples, the level of iodisation was between 7 to 14.99 ppm. It was observed that age, socioeconomic status, family history of goiter and iodisation levels <15 ppm were significant risk factors for goiter (p<0.0001). Conclusion: This study shows that goiter still continues to be a major public health problem in Kancheepuram, Tamil Nadu, India. The public health authorities should ensure public awareness about the effects of IDDs and the need to consume adequately iodised salt. The availability of adequate and regular supply of iodised salt should be ensured. [ABSTRACT FROM AUTHOR]

Nodular thyroid diseases are common in Turkey. Insulin resistance (IR) is considered as the most important component of metabolic syndrome (MetS), and it is thought to directly affect thyroid diseases, together with other components of MetS. The aim of this study was to evaluate potential factors associated with thyroid nodularity. This study was part of the prospective MELEN study. In total, randomly selected 2233 subjects were evaluated. A euthyroid subgroup of participants (n = 1432) was selected and 421 of them had MetS. Both goitres and multinodular goitres (MNGs) were significantly more common in the MetS (+) group (p < .001). Older age was the only factor that significantly affected the presence of a nodular goitre (NG) (p < .001). The presence of a MNG was associated with older age (p < .001), systolic blood pressure level (p < .008) and MetS (p < .001). There was no difference in the thyroid volume or presence of nodular thyroid diseases between the IR (+) and (-) groups. Both the thyroid volume and the presence of MNGs were significantly associated with MetS, independent of thyroid-stimulating hormone (TSH) and IR. We suggest that the individual components of MetS may influence thyroid nodularity to some degree and that together they exert a cumulative effect on the thyroid gland. As a result, in the absence of MetS, we further suggest that IR alone does not explain the increase in thyroid volume and thyroid nodule formation. [ABSTRACT FROM AUTHOR]

Background. Universal use of iodized salt is a simple and inexpensive method to prevent and eliminate iodine deficiency disorders like mental retardation. However, little is known about the level of adequately iodized salt consumption in the study area. Therefore, the study was aimed at assessing the proportion of households having adequately iodized salt and associated factors in Wolaita Sodo town and its peripheries, Southern Ethiopia. Methods. A cross-sectional study was conducted from May 10 to 20, 2016, in 441 households in Sodo town and its peripheries. Samples were selected using the systematic sampling technique. An iodometric titrationmethod (AOAC, 2000) was used to analyze the iodine content of the salt samples. Data entry and analysis were done using Epi Info version 3.5.1 and SPSS version 16, respectively. Result. The female tomale ratio of the respondents was 219.Themean age of the respondents was 30.2 (±7.3 SD). The proportion of households having adequately iodized salt was 37.7%, with 95% CI of 33.2% to 42.2%. Not exposing salt to sunlight with [OR: 3.75; 95% CI: 2.14, 6.57], highermonthly income [OR: 3.71; 95% CI: 1.97-7.01], and formal education of respondents with [OR: 1.75; 95% CI: 1.14, 2.70] were found associated with the presence of adequately iodized salt at home. Conclusion. This study revealed low levels of households having adequately iodized salt in Wolaita Sodo town and its peripheries. The evidence here shows that there is a need to increase the supply of adequately iodized salt to meet the goal for monitoring progress towards sustainable elimination of IDD. [ABSTRACT FROM AUTHOR]

The assessment of the iodine status of natural waters is crucial for focusing future strategies for controlling and monitoring iodine deficiency disorders (IDD). Nanoparticles have been increasingly used as sensors for several organic and inorganic analytes. In this study, we report the synthesis of new Tyrosine Capped Anisotropic Silver Nanoparticles (AgNPs). The AgNPs were characterized by TEM, UV–vis spectroscopy, and polarized and depolarized dynamic light scattering measurements, and were used for the quantitative determination of iodide ions in the presence of excess chloride ions. Both anions gave rise to an etching of the tips of the nanoprims converting them in rounded nanoplates. However, iodide ions perform this etching much better than chloride ones, allowing for their selective determination in tap waters. Fluoride and bromide anions give rise to a more efficient etching than chloride ions, but their presence does not interfere with iodide determination. This method was also used to determine the concentration of iodide in a sample of drinking water. [ABSTRACT FROM AUTHOR]

Aim: Iodine (I) deficiency is distinct from other micronutrient deficiencies in human populations in having a high endemic prevalence both in well-developed and in developing countries. The very low concentration of iodine in agricultural soils and cereal-based foods is widely believed to be the main reason of iodine deficiency in humans, especially in developing countries. In the present study, the possibility of using iodine containing fertilizers for agronomic biofortification of cereal grains with iodine was studied. The aim was to establish the best application method (to the soil or as foliar spray), the best form of iodine (potassium iodate or potassium iodide) and the optimal dose of iodine. Additionally, experiments were conducted to study transport of iodine in plants and localization of iodine within the grains. Materials and methods: Experiments were conducted both under greenhouse conditions and in the field on wheat ( Triticum aestivum) grown in Turkey and Pakistan, on rice ( Oryza sativa) grown in Brazil, Thailand and Turkey and on maize ( Zea mays) grown in Turkey. The iodine concentration in the grain, localization of iodine in different grain fractions of wheat (i.e., endosperm, bran and embryo) and iodine concentration of both brown rice and polished rice was analyzed. In short-term experiments, the translocation of iodine from older into younger leaves was also studied. Inductively coupled plasma mass spectrometry (ICP-MS) was used for analysis of iodine in plant and soil samples. Results: In greenhouse experiments on wheat, soil-applied potassium iodide (KI) and potassium iodate (KIO) at increasing rates (i.e., 0, 0.1, 0.25, 1, 2.5, 5, 10 and 20 mg I kg soil) both iodine forms substantially increased iodine concentration in the shoot, with the highest shoot iodine resulting from the KI treatments. However, these soil treatments did not affect iodine concentrations in the wheat grain, with the exception of the highest iodine rates (i. e., 10 and 20 mg I kg soil) which also depressed the grain yield. In contrast to the soil applications, foliar spray of KI and KIO at increasing rates during heading and early milk stages did enhance grain iodine concentrations up to 5- to 10-fold without affecting grain yield. Including KNO or a surfactant to the iodine containing foliar spray further increased the grain iodine concentration. In a short-term experiment using young wheat plants, it was found that iodine is translocated from older into younger leaves after immersion of the older leaves in solutions containing KI or KIO. Adding KNO or a surfactant in the immersion solution also promoted leaf absorption and translocation of iodine into younger leaves. Field experiments conducted in different countries confirmed that foliar application with increasing rates of iodine significantly increased grain iodine concentrations in wheat, brown rice and maize. This increase was also found in the iodine concentration of the endosperm part of wheat grains and in polished rice. Conclusions: The results of the present study clearly show that foliar application of iodine containing fertilizers is highly effective in increasing grain iodine concentrations in wheat, rice and maize. Presented results suggest that iodine is translocated from shoot to grain by transport in the phloem. Spraying KIO up to the rate of 0.05% w/ v is suggested as the optimal form and rate to be used in agronomic biofortification with iodine. The substantial increase in grain iodine concentrations could contribute to the prevention of iodine deficiency in human populations with low dietary iodine intake. The reasons behind the higher effectiveness of foliar-applications compared to the soil applications of iodine fertilizers in improving grain iodine concentration are discussed. [ABSTRACT FROM AUTHOR]

The article shows the necessity of healthy foods development and introduction into population`s food ration, which are enriched with scarce micronutrients, especially with iodine, to strengthen health and prevent diseases. There is a review of Laminarium chemical composition and proved the possibility of using these algae as iodine-containing ingredient to produce foodstuffs aimed to prevent iodine deficient disorders. The correlation of iodine and selenium in Laminarium algae is unique and is (1.0 : 0.7). This is that correlation what is necessary for human`s thyroid gland to provide normal functioning and optimal producing of the most important hormones - Thyroxine (T6) and Triiodothyronin (T3). While the development of pancakes with Laminarium stuffing, it was made a number of physical and chemical indicators of the stuffings compositions: humidity, active and titrated acidity. The important criteria for the stuffing formulation development was the product organoleptic estimation. It was found the optimal correlation of the formulation`s components of the Laminarium stuffing with the degree of homogenization considering. The application of modern research methods and experimental design, the study of organoleptic, physical, and chemical indicators of Laminarium and stuffing for pancakes with it allowed us to determine the optimum additive content in the stuffing and to optimize technological parameters of pancakes production. The Laminarium algae introduction in the recipe will enrich pancakes with a large number of macro-and microelements, vitamins and organic compounds. It has been found that the new product - pancakes with Laminarium stuffing characterized by high iodine content, has a high nutritional value and good consumer`s indicators. This allows to recommend it for using in preventive nutrition. [ABSTRACT FROM AUTHOR]

The iodine deficiency disorders (IDD) include a variety of disturbances such as decreased fertility, increased perinatal and infant mortality, impaired physical and intellectual development, mental retardation, cretinism, hypothyroidism, and endemic goiter (EG). The occurrence of the latter is determined by interplay between genetic and environmental factors. The major environmental factor is iodine status that is required for normal thyroid hormone synthesis. However, other factors like intake of micronutrients and goiterogens also have a significant impact. Essential and toxic trace elements both play a significant role in thyroid physiology. We hypothesize that in terms of overexposure boron may serve as a potential goiterogen. In particular, it is proposed that boron overload may impair thyroid physiology ultimately leading to goiter formation. Certain studies provide evidential support of the hypothesis. In particular, it has been demonstrated that serum and urinary B levels are characterized by a negative association with thyroid hormone levels in exposed subjects. Single indications on the potential efficiency of B in hypothyroidism also exist. Moreover, the levels of B were found to be interrelated with thyroid volume in children environmentally exposed to boron. Experimental studies also demonstrated a significant impact of boron on thyroid structure and hormone levels. Finally, the high rate of B cumulation in thyroid may also indicate that thyroid is the target for B activity. Chemical properties of iodine and boron also provide a background for certain competition. However, it is questionable whether these interactions may occur in the biological systems. Further clinical and experimental studies are required to support the hypothesis of the involvement of boron overexposure in goiter formation. If such association will be confirmed and the potential mechanisms elucidated, it will help to regulate the incidence of hypothyroidism and goiter in endemic regions with high boron levels in soil and water. [ABSTRACT FROM AUTHOR]

Background: A capillary electrophoresis (CE) assay was recently introduced as a new method for monitoring iodine nutrition in large-scale epidemiological studies. However, further tests revealed unanticipated matrix-dependent interferences when analyzing submicromolar levels of iodide in human urine as the predominate ionic form of dietary iodine. Herein, we describe a rigorous validation study that was used to identify sources of bias and establish modifications to the original CE method to improve method accuracy. Methods: An interlaboratory method comparison using CE with UV detection and inductively coupled plasma--mass spectrometry (ICP-MS) was performed to quantify urinary iodide concentrations (n = 71) independently at McMaster University and Hamilton General Hospital, as well as the CDC as part of their quality assurance program. A positive bias in the original CE method was indicated, and buffer conditions were subsequently optimized to overcome matrix interferences for reliable iodine status determination. Results: Positive bias in CE was attributed to variable concentrations of sulfate, a major urinary anion interference with similar mobility to iodide under the conditions originally reported. By increasing the concentration of α-cyclodextrin in the background electrolyte, the CE method was able to tolerate urinary sulfate over its normal physiological range without loss in signal response for iodide. The optimized CE assay generated results that were consistent with ICP-MS using 2 different internal standards (187Re and 130Te) with a median bias under 10%. Conclusions: CE offers a simple, selective, and cost-effective separation platform for surveillance of the iodine status of a population requiring only small volumes (<10 μL) of biobanked urine specimens, which is comparable to previously validated screening methods currently used in global health initiatives for prevention of iodine deficiency disorders. [ABSTRACT FROM AUTHOR]

Background: Iodine deficiency is the major preventable cause of irreversible mental retardation in the world. Ethiopia is a country with high prevalence of iodine deficiency disorders which continue to affect a large number of the country's population. The aim of the study was to assess the prevalence of iodine deficiency disorder in Wolaita and Dawuro zones. Methods: A descriptive, cross-sectional study was conducted in high school and preparatory students in Wolaita and Dawuro zones between April and May 2012. Data were collected from 718 school adolescents using pre-tested questionnaire through systematic random sampling technique. Data were entered and cleaned using Epi-info version 3.5.3 and then transported to SPSS version 20 for analysis. Bivariate and Multivariable logistic regression were done and the cut off value set was P < 0.05 as this is considered as statistically significant. Result: The overall prevalence (total goiter rate) of goiter in study area was 351 (48.9%). Students with Grade-1 goiter were 265 (36.9%) while with Grade-2 goiter was 86 (11.9%). Females were by a long way vulnerable for goiter and accounts 60.9% with Pearson correlation coefficient 0.300, P value 0.0001. Generally, the occurrence of goiter in the study area was found to have statistical significant association with sex of respondents (being female) [AOR = 3.526; 95% CI (2.55-4.87)], climatic condition of resident (temperate climate) [AOR = 0.617; 95% CI (0.404-0.943)], frequency of iodized salt use [AOR = 0.484; 95% CI (0.317-0.739)] and consumption of cassava [AOR = 4.184; 95% CI (2.6-6.707)]. Conclusion and recommendation: In general, the study revealed that iodine deficiency disorder was a serious public health concern. Nearly half of adolescent students in Wolaita and Dawuro zones were affected by goiter. Therefore, emphasis on a sustainable iodine intervention program targeted at population level, particularly at females is mandatory. Nutrition education along with adequate Universal Salt Iodization program is urgently required. [ABSTRACT FROM AUTHOR]