KONCENTRACIJA JODA U MOKRAĆI: PREDSKAZATELJ POROĐAJNE TEŽINE ILI BIOLOŠKI BILJEG ZA PROCJENU JODNOG STATUSA SAMO U ZDRAVIH TRUDNICA?

Introduction: This study determined urine iodine concentration (UIC) during gestation, assessed the maternal iodine nutrition status and correlated it with gestational age at birth (GAB) and birth weight (BW).The measurement of UIC provides the best single measurement of the iodine nutritional status in population. Objective: Determination of UIC in pregnant women in North Macedonia. Methods: This prospective study assessed the iodine nutrition status during the course of pregnancy with reference of median UIC among 364 healthy pregnant women in different gestational age (in trimester and 5-week intervals). Results: The overall and the 1st to the 3rd trimester median UIC were: 183.7, 207, 189.75 and 169.28 [μg/L], respectively. The median UIC (μg/L) results according to 5-week interval in advancing gestation were: 232.34, 200.13, 152.81, 194.39, 181.28, 160.28, 169.41 and 175.24, respectively. We detected 5.22% (19/364) and 74.72% (272/364) with the median UIC < 50 μg/L and UIC ≥ 100 μg/L, respectively. In multiple regression, the median UIC (β = 0.0000767, P = 0.929) had no statistically signifi cant prediction to the GAB. Disease prevalence results for mean UIC in detecting BW had no statistical signifi cance: area under curve (AUC) = 0.521, z-statistic (0.340), sensitivity (45.83%), specifi city (66.27%), predictive (6.59%) and P value (0.734). Conclusion: Iodine status of pregnant women in our study is generally suffi cient by World Health Organization recommendations. The median UIC in each trimester and 5-week interval has statistically insignifi cant decrease in accordance to the advancing gestation. The median UIC has no signifi cance in predicting GAB and BW.Uvod: Ova je studija utvrdila koncentraciju joda u mokraći (UIC) tijekom trudnoće, procijenila prehrambeni status joda kod majke i povezala ga s gestacijskom dobi pri rođenju (GAB) i porođajnom težinom (BW). Mjerenje UIC-a omogućava najbolje pojedinačno mjerenje prehrambenog statusa joda u populaciji. Cilj: Određivanje UIC-a trudnicama u sjevernoj Makedoniji. Metode: Ova prospektivna studija procjenjivala je prehrambeni status joda tijekom trudnoće, pozivajući se na medijan UIC 364 zdrave trudnice u različitoj gestacijskoj dobi (u intervalima tromjesečja i 5 tjedana). Rezultati: Ukupna i prosječna UIC od 1. do 3. tromjesečja bila su: 183,7, 207, 189,75 i 169,28 [μg / L]. Srednji rezultati UIC (μg / L) prema intervalu od 5 tjedana u napredovanju trudnoće bili su: 232,34, 200,13, 152,81, 194,39, 181,28, 160,28, 169,41 i 175,24. Otkrili smo 5,22 % (19/364) i 74,72 % (272/364) s medijanom UIC <50 μg / L, odnosno UIC ≥ 100 μg / L. U višestrukoj regresiji, medijan UIC (β = 0,0000767, P = 0,929) nije imao statistički značajno predviđanje za GAB. Rezultati prevalencije bolesti za srednji UIC u otkrivanju BW nisu imali statističku značajnost: područje ispod krivulje (AUC) = 0,521, z-statistika (0,340), osjetljivost (45,83 %), specifi čnost (66,27 %), prediktivna (6,59 %) i P vrijednost (0,734). Zaključak: Jodni status trudnica u našem istraživanju u pravilu je dovoljan prema preporukama Svjetske zdravstvene organizacije. Medijan UIC-a u svakom tromjesečju i intervalu od 5 tjedana statistički je beznačajno smanjen u skladu s napredovanjem trudnoće. Medijan UIC nema značenje u predviđanju GAB i BW

Izolirana hipotiroksinemija majke i perinatalni ishod u Sjevernoj Makedoniji

Isolated maternal hypothyroxinemia (IMH) is defined as the presence of low maternal total thyroxine (TT4) level in conjunction with normal maternal thyroid-stimulating hormone (TSH) level. The aim was to investigate whether IMH is associated with adverse pregnancy outcome in North Macedonia. Dried blood spot samples were obtained from 359 pregnant women meeting the inclusion criteria and analyzed for TT4 and TSH. Postpartum data were entered from their medical histories. Out of 359 women, 131 (37.42%) belonged to IMH group. There were statistically significant differences in birth weight (p=0.043), intrauterine growth restriction (IUGR) (p=0.028), Apgar score at 1 min <7 (p=0.018) and cesarean section for dystocia/disproportion (p=0.024) between the IMH and normal thyroid function (NTF) groups. In regression analysis, TSH was a significant variable predicting Apgar score (βst=0.05597, p=0.047), body mass index predicting birth weight (βst=0.02338, p=0.045) and TT4 predicting small for gestational age/IUGR (βst=-0.089834, p=0.029) in IMH group. TT4 was a strong predictor of birth weight (βst=-0.004778, p=0.003) and premature delivery (βst=0.028112, p=0.004) in NTF group. The impact of IMH in pregnancy remains controversial. IMH was associated with an increased maternal BMI and higher birth weight of neonates. Overweight could be a potential risk factor for thyroid dysfunction in pregnant women, and specifically IMH. The worst fetal outcome was seen in IMH mothers examined in second trimester. We found TSH, TT4 and BMI to be strong predictors of perinatal outcomes.Izolirana hipotiroksinemija majke (IMH) je prisutnost niske koncentracije ukupnog tiroksina (TT4) u majke u kombinaciji s normalnim majčinim hormonom za stimulaciju štitnjače (TSH). Cilj naše studije bio je istražiti je li IMH povezan sa štetnim ishodom trudnoće u Sjevernoj Makedoniji. U 359 trudnica koje su zadovoljile kriterije uzeti su uzorci osušene kapi krvi koji su analizirani na TT4 i TSH. Podaci nakon porođaja uneseni su za svaku majku iz njihove povijesti bolesti. Od ukupno 359 žena 131 (37,42%) je pripadala skupini IMH. Utvrđene su statistički značajne razlike u porođajnoj težini (p=0,043), intrauterinom ograničenju rasta (IUGR) (p=0,028), Apgar zbroju u 1. minuti <7 (p=0,018) i carskom rezu zbog distocije/disproporcije (p=0,024) između skupina s IMH i s normalnom funkcijom štitnjače (NFŠ). U regresijskoj analizi TSH je bila značajna varijabla za predviđanje Apgar zbroja (βst=0,05597, p=0,047), indeks tjelesne mase (ITM) za predviđanje porođajne težine (βst=0,02338, p=0,045) i TT4 za predviđanje rođenja djeteta malog za gestacijsku dob/IUGR (βst=-0,089834, p=0,029) u skupini IMH. TT4 je bio snažni prediktor porođajne težine (βst=-0,004778, p=0,003) i prijevremenog porođaja (βst=0,028112, p=0,004) u skupini NTF. Učinak IMH u trudnoći i dalje je proturječan. IMH je bio povezan s povećanim ITM majke i većom težinom novorođenčeta. Prekomjerna težina može biti potencijalni čimbenik rizika za disfunkciju štitnjače u trudnica, osobito IMH. Najgori fetalni ishod bio je kod majki s IMH koje su ispitane u drugom tromjesečju. TSH, TT4 i ITM snažni su prediktori za perinatalni ishod

Thyroid Function of Pregnant Women and Perinatal Outcomes in North Macedonia

Objective Thyroid diseases are the second most common endocrine disorders in the reproductive period of women. They can be associated with intrauterine growth restriction (IUGR), preterm delivery, low Apgar score, low birthweight (LBW) or fetal death. The aim of the present study is to explore thyroid dysfunction and its relationship with some poor perinatal outcomes (Apgar Score, low birthweight, and preterm delivery). Methods Dried blood spot samples from 358 healthy pregnant women were analyzed for thyroid stimulating hormone (TSH), total thyroxine (TT4), and thyroglobulin (Tg). Neonatal data were collected upon delivery. Four groups were formed based on thyroid function tests (TFTs). Results Of the 358 tested women, 218 (60.72%) were euthyroid. Isolated hypothyroxinemia was present in 132 women (36.76%), subclinical hyperthyroidism in 7 women (1.94%), and overt hypothyroidism in 1 (0.28%). The perinatal outcomes IUGR (p = 0.028) and Apgar score 1 minute (p = 0.015) were significantly different between thyroid function test [TFT]-distinct groups. In the multiple regression analysis, TT4 showed a statistically significant inverse predictive impact on LBW (p < 0.0001), but a positive impact of Tg on LBW (p = 0.0351). Conclusion Thyroid hormones alone do not have a direct impact on neonatal outcomes, but the percentage of their participation in the total process cannot be neglected. Based on the regression analysis, we can conclude that TT4 and Tg can be used as predictors of neonatal outcome, expressed through birthweight and Apgar score. The present study aims to contribute to determine whether a test for thyroid status should become routine screening during pregnancy

Улога на тиреоидното ткиво на блаÑÑ‚-транÑфорамцијата на лимфоцитите на болни Ñо тиреотокÑикоза

It has been examined the possibility of thyroid tissue as to how as a same antigen influence on blast - transformation, eventually on previously sensitised lymphocytes at thyrotoxicosis patients.The lymphocytes have been separated (taken) from the vein blood by the method of centrifugation with ficoll. Upon checking the lymphocytes are incubated in the medium in addition to homogenised thyroid tissue.It has been demonstrated the relation between the unchanged and blast transformed lymphocytes after 24 h incubation of the lymphocytes in the medium with the thyroid antigen. Ð›Ð¸Ð¼Ñ„оцити од болни Ñо тиротокÑикоза инкубирани Ñо тироиден целуларен Ðг покажуваат блаÑтна транÑформација во виÑок Ñтепен.Резултатите укажуваат дека кај тиреотокÑикоза поÑтои претходна Ñензибилизација на лимфоцитите Ñо тироиден антиген што укажува на пореметување на целуларниот имунитет кај овие болни

Ensuring Effective Prevention of Iodine Deficiency Disorders

K

Ensuring Effective Prevention of Iodine Deficiency Disorders.

To access publisher's full text version of this article click on the hyperlink at the bottom of the pagePrograms initiated to prevent iodine deficiency disorders (IDD) may not remain effective due to changes in government policies, commercial factors, and human behavior that may affect the efficacy of IDD prevention programs in unpredictable directions. Monitoring and outcome studies are needed to optimize the effectiveness of IDD prevention.Although the need for monitoring is compelling, the current reality in Europe is less than optimal. Regular and systematic monitoring surveys have only been established in a few countries, and comparability across the studies is hampered by the lack of centralized standardization procedures. In addition, data on outcomes and the cost of achieving them are needed in order to provide evidence of the beneficial effects of IDD prevention in countries with mild iodine deficiency.Monitoring studies can be optimized by including centralized standardization procedures that improve the comparison between studies. No study of iodine consumption can replace the direct measurement of health outcomes and the evaluation of the costs and benefits of the program. It is particularly important that health economic evaluation should be conducted in mildly iodine-deficient areas and that it should include populations from regions with different environmental, ethnic, and cultural backgrounds.EUthyroid info:eu-repo/grantAgreement/EC/FP7/63445

Standardized Map of Iodine Status in Europe

Knowledge about the population's iodine status is important, because it allows adjustment of iodine supply and prevention of iodine deficiency. The validity and comparability of iodine-related population studies can be improved by standardization, which was one of the goals of the EUthyroid project. The aim of this study was to establish the first standardized map of iodine status in Europe by using standardized urinary iodine concentration (UIC) data. Materials and Methods: We established a gold-standard laboratory in Helsinki measuring UIC by inductively coupled plasma mass spectrometry. A total of 40 studies from 23 European countries provided 75 urine samples covering the whole range of concentrations. Conversion formulas for UIC derived from the gold-standard values were established by linear regression models and were used to postharmonize the studies by standardizing the UIC data of the individual studies. Results: In comparison with the EUthyroid gold-standard, mean UIC measurements were higher in 11 laboratories and lower in 10 laboratories. The mean differences ranged from -36.6% to 49.5%. Of the 40 postharmonized studies providing data for the standardization, 16 were conducted in schoolchildren, 13 in adults, and 11 in pregnant women. Median standardized UIC was <100 μg/L in 1 out of 16 (6.3%) studies in schoolchildren, while in adults 7 out of 13 (53.8%) studies had a median standardized UIC <100 μg/L. Seven out of 11 (63.6%) studies in pregnant women revealed a median UIC <150 μg/L. Conclusions: We demonstrate that iodine deficiency is still present in Europe, using standardized data from a large number of studies. Adults and pregnant women, particularly, are at risk for iodine deficiency, which calls for action. For instance, a more uniform European legislation on iodine fortification is warranted to ensure that noniodized salt is replaced by iodized salt more often. In addition, further efforts should be put on harmonizing iodine-related studies and iodine measurements to improve the validity and comparability of results