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Iodine deficiency

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https://www.readbyqxmd.com/read/27905968/monitoring-the-prevalence-of-thyroid-disorders-in-the-adult-population-of-northeast-germany
#1
Rehman Mehmood Khattak, Till Ittermann, Matthias Nauck, Harald Below, Henry Völzke
BACKGROUND: Only a few studies like ours have investigated the effect of long-term stable iodine supply on thyroid disorders in a historically iodine-deficient population, but not with a long follow-up time of 10 years. METHODS: Data were derived from two independent population-based cohorts of the Study of Health in Pomerania (SHIP-0 [1997-2001] and SHIP-TREND [2008-2012]) comprising 4308 and 4420 subjects, respectively. Diagnosed thyroid disorders were assessed...
November 8, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27875310/extending-halogen-based-medicinal-chemistry-to-proteins-iodo-insulin-as-a-case-study
#2
Krystel El Hage, Vijay Pandyarajan, Nelson B Phillips, Brian J Smith, John G Menting, Jonathan Whittaker, Michael C Lawrence, Markus Meuwly, Michael A Weiss
Insulin, a protein critical for metabolic homeostasis, provides a classical model for protein design with application to human health. Recent efforts to improve its pharmaceutical formulation demonstrated that iodination of a conserved tyrosine (Tyr(B26)) enhances key properties of a rapid-acting clinical analog. Moreover, the broad utility of halogens in medicinal chemistry has motivated use of hybrid quantum- and molecular-mechanical methods to study proteins. Here, we (i) undertook quantitative atomic-level simulations of 3-I-Tyr(B26)-insulin to predict its structural features and (ii) tested these predictions by X-ray crystallography...
November 14, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27872699/the-effects-of-fenvalerate-on-hepatic-and-cerebral-xenobiotic-metabolizing-enzymes-in-selenium-and-or-iodine-deficient-rats
#3
Aydan Caglayan, Belma Kocer-Gumusel, Pinar Erkekoglu, Filiz Hincal
OBJECTIVES: Particularly in developing countries, selenium and/or iodine deficiencies are encountered and use of pesticides in agriculture are not well-controlled. Fenvalerate is a pyrethroid insectide used in agriculture and has applications against a wide range of pests. This study was designed to evaluate the effects of fenvalerate on hepatic and cerebral xenobiotic metabolizing enzyme activities in the presence of iodine and/or selenium deficiency on a rat model. MATERIALS AND METHODS: Iodine and/or selenium deficiency was induced by feeding three-week-old Wistar rats with a diet containing <0...
October 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27867886/genotype-phenotype-correlations-of-dyshormonogenetic-goiter-in-children-and-adolescents-from-south-india
#4
Bangaraiah Gari Ramesh, Panchangam Ramakanth Bhargav, Bangaraiah Gari Rajesh, Nangedda Vimala Devi, Rajagopalan Vijayaraghavan, Bhongir Aparna Varma
BACKGROUND: Dyshormonogenetic goiter is one of the most common causes of hypothyroidism in children and adolescents in iodine nonendemic areas. The exact genotype-phenotypic correlations (GPCs) and risk categorization of hypothyroid phenotypes of dyshormonogenetic mutations are largely speculative. The genetic studies in pediatric dyshormonogenesis are very sparse from Indian sub-continent. In this context, we analyzed the implications of TPO, NIS, and DUOX2 gene mutations in hypothyroid children with dyshormonogenetic hypothyroidism (DH) from South India...
November 2016: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27855727/iodine-knowledge-is-positively-associated-with-dietary-iodine-intake-among-women-of-childbearing-age-in-the-uk-and-ireland
#5
S Maria O'Kane, L Kirsty Pourshahidi, Kayla M Farren, Maria S Mulhern, J J Strain, Alison J Yeates
Adequate I intake is important before conception and during pregnancy for optimal infant neurodevelopment. Recent studies have highlighted the prevalence of I deficiency in the UK and Ireland. It is possible that optimal I intake may be impeded by a poor knowledge of I nutrition. This study aimed to investigate I knowledge among women of childbearing age in the UK and Ireland and to determine whether a relationship exists between I knowledge and dietary I intake. Females (aged 18-45 years) were invited to complete an online questionnaire, which assessed knowledge of I and estimated dietary I intake using a FFQ...
November 18, 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27835794/iodine-biofortification-of-crops-agronomic-biofortification-metabolic-engineering-and-iodine-bioavailability
#6
REVIEW
Silvia Gonzali, Claudia Kiferle, Pierdomenico Perata
Iodine deficiency is a widespread micronutrient malnutrition problem, and the addition of iodine to table salt represents the most common prophylaxis tool. The biofortification of crops with iodine is a recent strategy to further enrich the human diet with a potentially cost-effective, well accepted and bioavailable iodine source. Understanding how iodine functions in higher plants is key to establishing suitable biofortification approaches. This review describes the current knowledge regarding iodine physiology in higher plants, and provides updates on recent agronomic and metabolic engineering strategies of biofortification...
October 27, 2016: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/27833458/monitoring-the-prevalence-of-thyroid-disorders-in-the-adult-population-of-northeast-germany
#7
Rehman Mehmood Khattak, Till Ittermann, Matthias Nauck, Harald Below, Henry Völzke
BACKGROUND: Only a few studies like ours have investigated the effect of long-term stable iodine supply on thyroid disorders in a historically iodine-deficient population, but not with a long follow-up time of 10 years. METHODS: Data were derived from two independent population-based cohorts of the Study of Health in Pomerania (SHIP-0 [1997-2001] and SHIP-TREND [2008-2012]) comprising 4308 and 4420 subjects, respectively. Diagnosed thyroid disorders were assessed...
2016: Population Health Metrics
https://www.readbyqxmd.com/read/27827915/dietary-iodine-intake-of-the-australian-population-after-introduction-of-a-mandatory-iodine-fortification-programme
#8
Karen Charlton, Yasmine Probst, Gabriella Kiene
To address mild iodine deficiency in Australia, a mandatory fortification program of iodised salt in bread was implemented in 2009. This study aimed to determine factors associated with achieving an adequate dietary iodine intake in the Australian population post-fortification, and to assess whether bread consumption patterns affect iodine intake in high-risk groups. Using nationally representative data of repeated 24-h dietary recalls from the 2011-2012 Australian National Nutrition and Physical Activity Survey, dietary iodine intakes and food group contributions were compared by age, socioeconomic status (SES), and geographical remoteness (N = 7735)...
November 4, 2016: Nutrients
https://www.readbyqxmd.com/read/27818216/estimation-of-iodine-nutrition-and-thyroid-function-status-in-late-gestation-pregnant-women-in-the-united-states-development-and-application-of-a-population-based-pregnancy-model
#9
A Lumen, N I George
Previously, a deterministic biologically-based dose-response (BBDR) pregnancy model was developed to evaluate moderate thyroid axis disturbances with and without thyroid-active chemical exposure in a near-term pregnant woman and fetus. In the current study, the existing BBDR model was adapted to include a wider functional range of iodine nutrition, including more severe iodine deficiency conditions, and to incorporate empirically the effects of homeostatic mechanisms. The extended model was further developed into a population-based model and was constructed using a Monte Carlo-based probabilistic framework...
November 3, 2016: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27814438/iodine-status-over-two-decades-influence-of-seaweed-exposure
#10
P Smyth, R Burns, M Casey, K Mullan, C O'Herlihy, C O'Dowd
Iodine deficiency is known to result in deficits in neuropsychological development in children born to iodine deficient mothers. However, a remedy in terms of iodisation of table salt as is the norm in most countries, has not been embraced by Ireland. The borderline iodine status of the Irish population persists unchanged over the past 20 years with the annual median urinary iodine (UI) varying from 62.9 to 105 μg/L; overall median 72.4 μg/L (WHO recommended 100 μg/L). Exposure to a seaweed rich environment allowing for intake by respiration of seaweed derived gaseous iodine, rather than simple proximity to the sea, confers advantages in terms of iodine intake with 21/46 (45...
June 10, 2016: Irish Medical Journal
https://www.readbyqxmd.com/read/27809707/can-an-educational-intervention-improve-iodine-nutrition-status-in-pregnant-women-a-randomized-controlled-trial
#11
Parisa Amiri, Nadjmeh Hamzavi-Zarghani, Pantea Nazeri, Fazlollah Ghofranipour, Mehrdad Karimi, Atieh Amouzegar, Fereidoun Azizi
BACKGROUND: Pregnant women, due to their increased need for iodine, 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, one hundred pregnant women were randomly selected from five health-care centers in southern Tehran, the capital city of Iran. In the intervention group, pregnant women received the educational program lasted four months, and included two face to face educational sessions, using a researcher-designed educational pamphlet in the second and third trimesters and 2 follows-up by telephone calls...
November 3, 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27808034/iodine-deficiency-in-pregnancy-is-prevalent-in-vulnerable-groups-in-denmark
#12
Ditte Marie Kirkegaard-Klitbo, Kathrine Perslev, Stine Linding Andersen, Hans Perrild, Nils Knudsen, Tom Weber, Lone Banke Rasmussen, Peter Laurberg
INTRODUCTION: Iodine is essential for the production of thyroid hormones. In pregnancy, physiological changes occur that can lead to iodine deficiency and impairment of fetal neurological development. We aimed to assess the iodine intake in pregnant women in Eastern Denmark, compare iodine levels in Eastern and Western Denmark and to identify potentially vulnerable groups. METHODS: This was a cross-sectional cohort study of pregnant Danish women (n = 240). Questionnaires and urine samples were collected at the Ultrasound Clinic, Hvidovre Hospital, Denmark, and urinary iodine concentrations (UIC) (µg/l) were measured...
November 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/27807474/iodine-deficiency-and-associated-factors-among-school-children-a-cross-sectional-study-in-ethiopia
#13
Sintayehu Hailu, Mamo Wubshet, Haile Woldie, Amare Tariku
BACKGROUND: Iodine deficiency remains a public health problem in the world. It is the leading cause of preventable mental retardation and brain damage worldwide. Though 12 million school age children are at risk of developing iodine deficiency, there is a scarcity of literature showing the magnitude of iodine deficiency in Ethiopia. Therefore, this study aimed to determine the prevalence and associated factors of iodine deficiency among school children in Robe District, southeast Ethiopia...
2016: Archives of Public Health, Archives Belges de Santé Publique
https://www.readbyqxmd.com/read/27806973/neonatal-thyrotropin-concentration-and-iodine-nutrition-status-of-mothers-a-systematic-review-and-meta-analysis
#14
Pantea Nazeri, Parvin Mirmiran, Ali Kabir, Fereidoun Azizi
BACKGROUND: Low maternal iodine intake disturbs the thyroid function of neonates transiently or permanently. OBJECTIVE: To our knowledge, we conducted one of the first systematic reviews and meta-analyses aimed at exploring the association of neonatal thyrotropin concentrations and iodine status of mothers during pregnancy and early postpartum periods. DESIGN: Data were collected through literature searches for studies published between 1969 and 2015 with the use of electronic databases...
November 2, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27805280/iodine-deficiency-amongst-pregnant-women-in-south-west-england
#15
Bridget A Knight, Beverley M Shields, Xuemei He, Elizabeth N Pearce, Lewis E Braverman, Rachel Sturley, Bijay Vaidya
INTRODUCTION: Iodine deficiency in pregnancy may impair foetal neurological development. The UK population is generally thought to be iodine sufficient; however recent studies have questioned this assumption. Our study aimed to explore the prevalence of iodine deficiency in a cohort of pregnant mothers from South-West England. METHODS: Urine samples were obtained from 308 women participating in a study of breech presentation in late pregnancy. They had no known thyroid disease and a singleton pregnancy at 36-38 weeks gestation...
November 2, 2016: Clinical Endocrinology
https://www.readbyqxmd.com/read/27803709/iodine-and-selenium-biofortification-with-additional-application-of-salicylic-acid-affects-yield-selected-molecular-parameters-and-chemical-composition-of-lettuce-plants-lactuca-sativa-l-var-capitata
#16
Sylwester Smoleń, Iwona Kowalska, Małgorzata Czernicka, Mariya Halka, Kinga Kęska, Włodzimierz Sady
Iodine (I) and selenium (Se) are included in the group of beneficial elements. They both play important roles in humans and other animals, particularly in the regulation of thyroid functioning. A substantial percentage of people around the world suffer from health disorders related to the deficiency of these elements in the diet. Salicylic acid (SA) is a compound similar to phytohormones and is known to improve the efficiency of I biofortification of plants. The influence of SA on Se enrichment of plants has not, however, been recognized together with its effect on simultaneous application of I and Se to plants...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27784201/iodine-supplementation-in-women-during-preconception-pregnancy-and-lactation-current-clinical-practice-by-u-s-obstetricians-and-midwives
#17
Simone De Leo, Elizabeth N Pearce, Lewis E Braverman
BACKGROUND: Iodine deficiency is a major public health problem throughout the world, especially for pregnant women, and it is considered the most common cause of preventable intellectual impairment. In the United States, iodine status in pregnant women is considered mildly deficient. Therefore, the Endocrine Society, the American Thyroid Association, the Teratology Society, and the American Academy of Pediatrics recommend that women receive prenatal vitamins containing 150 µg of iodine daily during preconception, pregnancy, and lactation...
October 26, 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27768855/population-survey-of-iodine-deficiency-and-environmental-disruptors-of-thyroid-function-in-young-children-in-haiti
#18
Julia Elisabeth von Oettingen, Tesha Dawn Brathwaite, Christopher Carpenter, Ric Bonnell, Xuemei He, Lewis E Braverman, Elizabeth N Pearce, Philippe Larco, Nancy Charles Larco, Eddy Jean-Baptiste, Rosalind S Brown
CONTEXT: Iodine deficiency is the leading cause of preventable neurodevelopmental delay in children worldwide. It is a possible public health concern in Haiti. OBJECTIVE: To perform a population iodine survey in Haitian young children, and its influence by environmental factors. DESIGN: Cross-sectional study, March-June 2015. SETTING: Community churches in 3 geographical regions in Haiti. PARTICIPANTS: 299 healthy Haitian children aged 9 months to 6 years; 100 enrolled in coastal (C) and mountainous (M) regions, and 99 in an urban region (U)...
October 21, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27762729/thyroglobulin-as-a-functional-biomarker-of-iodine-status-in-a-cohort-study-of-pregnant-women-in-the-united-kingdom
#19
Sarah C Bath, Victor J M Pop, Victoria L Furmidge-Owen, Maarten A C Broeren, Margaret P Rayman
BACKGROUND: Though iodine deficiency in pregnancy is a matter of public-health concern, a functional measure of iodine status is lacking. The thyroid-specific protein thyroglobulin (Tg), which reflects thyroid size, has shown promise as a functional measure in studies of children and adults, but data in pregnancy are sparse. In a cohort of mildly to moderately iodine-deficient pregnant women, this study aimed to explore whether serum Tg is a sensitive functional biomarker of iodine status and to examine longitudinal change in Tg with gestational age...
November 18, 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27758131/assessment-of-nutritional-status-of-iodine-through-urinary-iodine-screening-among-local-children-and-adolescents-after-the-fukushima-daiichi-nuclear-power-plant-accident
#20
Masaharu Tsubokura, Shuhei Nomura, Hajime Watanobe, Yoshitaka Nishikawa, Chiaki Suzuki, Sae Ochi, Claire Leppold, Hirokatsu Kinoshita, Shigeaki Kato, Yasutoshi Saito
Background Iodine deficiency is an important modifier of the risk of thyroid cancer following irradiation; however, little information is available on a prevalence of iodine deficiency in Fukushima and its surroundings after the Fukushima Daiichi nuclear power plant accident that occurred in March, 2011. Methods To assess urinary iodine concentrations (UIC) and a prevalence of iodine deficiency and to elucidate any associations between demographic characteristics and UIC levels among children and adolescents aged 18 or younger at the time of the accident in Fukushima Prefecture and its surroundings, we evaluated the data on voluntary UIC testing conducted by Hirata Central Hospital, Fukushima...
October 19, 2016: Thyroid: Official Journal of the American Thyroid Association
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