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Introducción. El yodo desempeña un rol fundamental en el metabolismo, el crecimiento y el desarrollo humano. Durante el embarazo y la infancia, la demanda de este micronutriente aumenta considerablemente. La tirotropinemia neonatal (TSHn) aumentada, definida como TSHn ≥5 mUI/l, es un marcador que señala la deficiencia de yodo en una población cuando su prevalencia supera el 3 %. Objetivo. Determinar la prevalencia de TSHn ≥ 5 en La Pampa durante el período 2021-2022, analizar su correlación con diferentes variables y compararla con datos de una cohorte histórica. Población y métodos. Estudio transversal, de diseño descriptivo-analítico, sobre una población de neonatos nacidos en las cinco zonas sanitarias de la provincia de La Pampa durante los años 2021 y 2022. Resultados. De los 5778 neonatos evaluados, el 9,6 % presentó niveles de TSHn ≥5 mUI/l. El 70,4 % de estas mediciones fueron realizadas después del tercer día de vida. No se observaron diferencias significativas en la frecuencia de niveles elevados de TSHn según el año de nacimiento, peso al nacer o días hasta la extracción. Se registró una mayor prevalencia en el sexo masculino (10,6 % versus 8,5 %; p = 0,007) y entre los neonatos nacidos a término (9,8 % versus 6,6 %; p = 0,02). La prevalencia de hipertirotropinemia fue superior a la observada en una cohorte de 2001-2002. Conclusiones. La prevalencia de hipertirotropinemia neonatal en La Pampa durante los años 2021 y 2022 fue del 9,6 %, lo que indica un estado de deficiencia leve de yodo en la provincia, superior al reportado hace dos décadas.
Introduction. Iodine plays a key role in human metabolism, growth, and development. During pregnancy and childhood, the demand for this micronutrient increases notably. Increased neonatal thyroid stimulating hormone (nTSH) levels, defined as nTSH ≥ 5 mIUL, are a marker of iodine deficiency in a population if its prevalence is higher than 3%.Objective. To establish the prevalence of nTSH ≥ 5 in La Pampa in the 20212022 period, analyze its correlation with different variables, and compare it with data from a historical cohort.Population and methods. Cross-sectional, descriptive-analytical study in a population of newborn infants born in the 5 health regions of the province of La Pampa in 2021 and 2022. Results. Of the 5778 assessed newborn infants, 9.6% had nTSH levels ≥ 5 mIU/L. It was reported that 70.4% of these measurements were done after the third day of life. No significant differences were observed in the frequency of high nTSH levels by year of birth, birth weight, or days until samplecollection.A higher prevalence was observed among male infants (10.6% versus 8.5%; p = 0.007) and term infants (9.8% versus 6.6%; p = 0.02). The prevalence of high TSH levels was superior to that observed in the 20012002 cohort. Conclusions. The prevalence of high nTSH levels in La Pampa during 2021 and 2022 was 9.6%, suggesting the presence of mild iodine deficiency in the population of this province, higher that what had been reported 2 decades ago.
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Humans , Male , Female , Infant, Newborn , Thyrotropin/blood , Iodine/deficiency , Biomarkers/blood , Prevalence , Cross-Sectional StudiesABSTRACT
La alta prevalencia de hipotiroidismo subclínico en Chile puede deberse a que el límite superior normal de la hormona estimulante del tiroides (TSH) sérica es bajo. Personas con TSH levemente mayor al límite superior pueden ser metabólicamente similares a personas sanas. Se compararon marcadores de acción tiroidea (gasto energético en reposo [GER] y lipoproteína de baja densidad [LDL]) en adultos con hipotiroidismo subclínico leve y con función tiroidea normal con o sin tratamiento con levotiroxina. Se midió GER, perfil lipídico y tiroideo en personas sanas con función tiroidea normal (TSH ≥0,4-<4,5 µUI/ml; n=91); con hipotiroidismo subclínico leve (TSH ≥4,5-≤6,5 µUI/ml; n=5); y con hipotiroidismo clínico tratado con levotiroxina y TSH normal (n=13). Se analizó la LDL en 838 personas sanas con función tiroidea normal y 89 con hipotiroidismo subclínico leve de la Encuesta Nacional de Salud 2016/17 (ENS). El GER, ajustado por peso, sexo y edad, fue similar entre grupos (p=0,71). La LDL fue similar entre personas con función tiroidea normal e hipotiroidismo subclínico leve (91±24 vs. 101±17 mg/dl; p=0,67), y menor en hipotiroidismo tratado (64±22 mg/dl; p<0,01). La LDL no se asoció con TSH pero si inversamente con T4L en mujeres (r=-0,33; p=0,02; n=53). En la ENS, ambos grupos tuvieron similar LDL (p=0,34), la que se asoció inversamente con T4L en mujeres (r=-0,12; p=0,01; n=569) pero no con TSH. Personas sanas con función tiroidea normal y con hipotiroidismo subclínico leve tienen similar GER y LDL. Esto apoya la idea de redefinir el límite superior normal de TSH.
The high prevalence of subclinical hypothyroidism in Chile may be due to the low normal upper limit of serum thyroid-stimulating hormone (TSH). People with TSH slightly higher than the upper limit may be metabolically similar to healthy people. Thyroid action markers (resting energy expenditure [REE] and low-density lipoprotein [LDL]) were compared in adults with mild subclinical hypothyroidism and with normal thyroid function with or without levothyroxine treatment. REE, lipid and thyroid profile were measured in healthy people with normal thyroid function (TSH ≥0,4-<4,5 µUI/ml (n=91); with mild subclinical hypothyroidism (TSH ≥4,5-≤6 µUI/ml; n=5); and with clinical hypothyroidism treated with levothyroxine and normal TSH (n=13). LDL was analyzed in 838 healthy people with normal thyroid function and 89 with mild subclinical hypothyroidism from the 2016/17 National Health Survey (NHS). REE, adjusted for weight, sex and age, was similar between the groups (p=0,71). LDL was similar between people with normal thyroid function and mild subclinical hypothyroidism (91±24 vs. 101±17 mg/dl; p=0,67), and lower in treated hypothyroidism (64±22 mg/dl; p<0,01). LDL was not associated with TSH but was inversely with FT4 in women (r=-0,33; p=0,02; n=53). In the NHS, both groups had similar serum LDL (p=0,34), which was inversely associated with FT4 in women (r=-0,12; p=0,01; n=569), but not with TSH. Healthy people with normal thyroid function and mild subclinical hypothyroidism have similar REE and LDL. These results support the idea of redefining the normal upper limit of TSH.
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Objective To explore the diagnostic value of energy spectrum CT quantitative parameters combined with serum thy-roid stimulating hormone receptor-messenger ribonucleic acid(TSHR-mRNA)for papillary thyroid microcarcinoma(PTMC).Methods A total of 105 patients with thyroid micronodules confirmed by surgery and pathology were collected,61 of whom were PTMC(PTMC group),and 44 patients with micronodular goiter(MNG)(MNG group).Energy spectrum CT quantitative parameters and serum TSHR-mRNA expression were compared between the two groups.The diagnostic value of energy spectrum CT quantitative parame-ters alone and combined with serum TSHR-mRNA for PTMC was analyzed by receiver operating characteristic(ROC)curve.Results The iodine concentration and slope of energy spectrum CT quantitative parameters between PTMC group and MNG group were signifi-cantly different in plain scan,arterial and venous phases(P<0.05).The mean serum TSHR-mRNA expression in the PTMC group was higher than that in MNG group(P<0.05).The area under the curve(AUC)for diagnosing PTMC using quantitative parame-ters of energy spectrum CT combined with serum TSHR-mRNA was 0.913,and the accuracy,sensitivity,and negative predictive value of diagnosing PTMC were significantly higher than those of quantitative parameters of energy spectrum CT or serum TSHR-mRNA(P<0.05).Conclusion Both energy spectrum CT quantitative parameters and serum TSHR-mRNA can be used to diagnose PTMC alone,and the combination of both is more accurately.
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Objective To explore the effects of different doses of valproate on serum thyroxine(TSH),prolactin(PRL)and dopamine(DA)in patients with bipolar disorder(BPD)level of influence.Methods A total of 90 patients with BPD who received treatment in hospital from May 2020 to May 2022 were selected as the study objects.They were randomly divided into groups A,B and C,with 30 cases in all.Groups A,B and C were orally administered 10 mg/kg,15 mg/kg and 20 mg/kg sodium valproate every day,respectively.The clinical efficacy,scores of mental diseases before and after treatment,indexes related to blood drug concentration,serum levels before and after treatment,indexes related to liver function and incidence of adverse reactions were compared among the three groups.Results There was no significant difference in the total effective rate among the three groups after treatment(P>0.05).After treatment,the scores of the three groups were significantly improved compared with before treatment(P<0.05).There was significant difference in the time to reach the stable state serum concentration(P<0.05).There were no significant differences in TSH,PRL and DA levels among the three groups after treatment compared with before treatment(P>0.05).ALT and AST levels in the three groups after treatment were increased compared with those before treatment(P<0.05),and there were statistically significant differences in ALT and AST levels among the three groups after treatment(P<0.05).There was significant difference in the incidence of adverse reactions among the three groups(P<0.05).Conclusion Sodium valproate can effectively treat BPD patients and relieve the degree of mania or depression,but has no significant effect on the level of TSH,PRL and DA.Among them,small dose of sodium valproate can guarantee the thera-peutic effect and have less impact on liver function,and less adverse reactions,high safety,worthy of clinical promotion.
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Objective:To investigate the alteration in iodine nutritional status and influence on thyroid function in the elderly aged≥65 years following water source modification in high iodine areas.Methods:Data from Yaoji Town, Xuzhou, Jiangsu(an area with high iodine due to water sources) of the national epidemiological survey on thyroid diseases, iodine nutrition, and diabetes(TIDE study) in 31 provinces and cities in China from 2015 to 2017 were utilized. Additionally, data from the screening, monitoring, and intervention on thyroid diseases(TOPS study) in the elderly(≥65 years) in Shunhe Town, Suqian, Jiangsu(an area with iodine levels exceeding the recommended amount), and Yaoji Town, Xuzhou from May to August 2021, are included. Each subject completed a questionnaire, physical examination, laboratory tests and thyroid ultrasound examinations. A total of 2 717 subjects aged≥65 years were included, including group 1, 258 subjects in TIDE study; Group 2, 1 313 subjects in TOPS Xuzhou area; Group 3, 1 146 subjects in TOPS Suqian area.Results:The urinary iodine concentration(UIC) in group 2 was significantly lower than that in group 1 [(235.16±67.09)μg/L vs (491.58±384.93)μg/L, P<0.001], but no significant difference compared with group 3 [(235.16±67.09) μg/L vs(231.62±66.11) μg/L, P>0.05]. The serum TSH level in group 2 was significantly lower than that in group 1 [(2.92±5.14)μIU/mL vs (4.15±9.19)μIU/mL, P<0.001]. Compared with group 2 and 3, the prevalence of subclinical hypothyroidism in the elderly in group 1 was the highest(22.48% vs 10.13% and 8.12%, P<0.001). TSH levels were linearly correlated with age in both excessive iodine and more than adequate iodine nutrition areas. TSH level was gradually increased with age. Conclusion:The alteration in TSH levels among the elderly is notably linked to both aging and iodine status. The prevalence of hypothyroidism in the elderly can be significantly reduced when the iodine nutrition status of the elderly returns to normal.
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Objective:To investigate the relationship between thyroid-stimulating hormone(TSH) levels and 10-year mortality in women aged 40 years and older.Methods:Residents aged 40 and over in urban areas of Guiyang City who participated in the " Epidemiological Study of Cancer Risk in Patients with Type 2 Diabetes in China(REACTION)" were followed up in 2011. Finally, 5 614 people were enrolled, and the baseline general information, physical examination and TSH detection were carried out. The average follow-up was(9.77±1.55) years, and the treatment and death of thyroid-related diseases were recorded. The Cox proportional hazards model was used to analyze the relationship between TSH level and 10-year mortality in middle-aged and elderly women, and plotting survival time curves(Kaplan-Meier curves) to study the association between elevated TSH levels and lifespan in subjects under 65 years old. Results:The multivariate Cox proportional hazards model showed that compared with the normal group, after multivariate adjustment, the risk of death in the TSH increased group was decreased( HR=0.644, 95% CI 0.478-0.868, P<0.05); after stratifying the elevated TSH group, the risk of death was decreased in the slightly elevated TSH group( HR=0.566, 95% CI 0.405-0.791, P<0.001); the elevated TSH group was further stratified by age. In the group under 65 years old, compared to the normal group, the mildly elevated group showed a reduced risk of mortality( HR=0.429, 95% CI 0.245-0.751, P=0.003). In the group aged 65 and above, there were no statistically significant differences in mortality risk between the mildly elevated group, severely elevated group, and the normal group( P>0.05). In the group under 65 years old, the K-M curve indicated that the survival rate of the mildly elevated TSH group was significantly higher than that of the normal group( χ2=11.931, P=0.003), the difference was statistically significant. Conclusion:Mildly elevated TSH levels in women aged 40-65 years are associated with a reduced risk of all-cause death and longer lifespan.
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Objective:The degree of involvement of extraocular muscles varies across different regions of retrobulbar tissue in patients with thyroid eye disease, but the mechanism is unclear. This study aims to explore the relationship between differential expression of thyroid-stimulating hormone receptor(TSHR) in different parts of the extraocular muscles and the varying degrees of muscle involvement.Methods:The medial, lateral, superior, and inferior rectus muscle were separated from the retrobulbar tissue of rats, and the expression level of TSHR in four extraocular muscles was detected by immunofluorescence and qPCR. Extraocular muscle tissue of patients with strabismus was collected to detect the expression of TSHR and the cell types expressed by fluorescence.Results:The results of qPCR showed that the expression of TSHR in the medial rectus muscle was significantly higher than that in the lateral, superior, and inferior rectus muscle(medial rectus vs lateral rectus, P=0.012; medial rectus vs superior rectus, P=0.015; medial rectus vs inferior rectus, P=0.013), but there was no difference in insulin-like growth factor 1(IGF-1R) expression. Immunofluorescence showed that TSHR was co-expressed with PAX7, a molecular marker of muscle satellite cells, and the expression level in the medial rectus muscle of rats and humans was significantly higher than those in the other three extraocular muscles. Conclusion:The high specific expression of TSHR in the satellite cells of the medial rectus muscle may be the reason why the medial rectus muscle is most susceptible to involvement in thyroid eye disease.
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Objective:To investigate the iodine nutrition status of key population in Fuzhou City, and to provide scientific basis for adjusting intervention strategies.Methods:From March to October 2021, a survey was conducted on iodine nutrition status of key population in 12 counties (cities, districts) of Fuzhou City. Each county (city, district) was divided into 5 sampling areas according to the east, west, south, north and middle directions. One township (street) was selected from each area, and 40 non-boarding children aged 8 - 10 (age balanced, half male and half female) from one primary school and 20 pregnant women (early, middle and late pregnancy balanced) were selected as survey subjects. Household salt samples and random urine samples were collected, and the salt iodine and urine iodine levels were tested by direct titration and arsenic and cerium catalytic spectrophotometry, respectively. Children's thyroid volume was measured by B-ultrasonography. At the same time, in cooperation with Fuzhou Maternal and Child Health Hospital, the thyroid stimulating hormone (TSH) testing results of heel blood of full-term natural delivery newborns in Fuzhou City in 2021 were collected.Results:A total of 2 400 children were monitored for salt iodine, urine iodine and goiter. The median salt iodine was 24.40 mg/kg, with an iodine salt coverage rate of 93.04% (2 233/2 400), a qualified rate of iodized salt of 97.40% (2 175/2 233), and a consumption rate of qualified iodized salt of 90.62% (2 175/2 400). The median urine iodine was 181.47 μg/L. The rate of goiter was 1.04% (25/2 400). A total of 1 200 pregnant women were monitored for salt iodine and urine iodine. The median salt iodine was 24.10 mg/kg, the coverage rate of iodized salt was 91.08% (1 093/1 200), the qualified rate of iodized salt was 97.90% (1 070/1 093), and the consumption rate of qualified iodized salt was 89.17% (1 070/1 200). The median urine iodine was 128.10 μg/L. The median TSH level in the heel blood of 14 242 newborns was 3.38 mU/L, and the proportion of TSH level > 5 mU/L was 30.96% (4 410/14 242).Conclusions:In 2021, children in Fuzhou City are at an appropriate level of iodine, but pregnant women are insufficient of iodine. We should continue to maintain comprehensive prevention and control measures mainly based on salt iodization, provide health education for pregnant women, and strengthen monitoring of TSH level in newborns.
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Background: Thyroid disorders are the predominant endocrinological afflictions of pregnancy that if were to affect the mother and her child, would lead to various complications.Methods: A randomized study among 450 third trimester admitted cases for any indication were subjected to thyroid functions by TSH, Free T4 and TPO Ab. Total 61 mothers (54 hypothyroidism and 7 sub clinical hyperthyroidism) had thyroid dysfunction. These 54 hypothyroid mothers were further evaluated during the remaining course of gestation for feto-maternal outcomes.Results: Out of 450 third trimester ANC cases 61(13.5%) had deranged thyroid functions in third trimester. Out of 61patients, 18 (29.50%) patients had TPO Ab positive. Prevalence of subclinical hypothyroidism, overt hypothyroidism, and subclinical hyperthyroidism was 9.6%, 2.45%, and 1.5%, respectively. Anemia was found in 9.3% of SCH and 27.3% cases in OH cases. Preeclampsia was found in 16.2% cases of SCH and 18.2% cases in OH cases. Gestational diabetes mellitus was noticed among 16.27% cases of SCH and 18.18% cases of OH. Previous abortions were present among 65.1% cases of SCH and 45.45% cases of OH. Placental abruption and cardiac failure were observed in 4.65% and 2.34% of SCH only. Cesarean delivery occurred in 18.6% of SCH and 36.36% of overt hypothyroidism.Conclusions: This study concludes a high prevalence of thyroid disorders as subclinical hypothyroidism (9.6%), overt hypothyroidism (2.5%) and subclinical hyperthyroidism (1.5%) in third trimester pregnancy.
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Background: Hypothyroidism is a common endocrine disorder in which there is deficient production of thyroid hormone. Even though hormone replacement therapy is the mainstay treatment of hypothyroidism, but due to adverse effects on long term use, safe and effective Unani herbal drugs need to be researched. A decrease in serum concentrations of thyroid hormone causes an increased secretion of thyroid stimulating hormone (TSH), thus resulting in elevated serum TSH concentration. Methods: The methods used to determine thyroid dysfunction are still serum thyroid stimulating hormone and the main circulating thyroid hormones thyroxine and triiodothyronine either as total or estimated free concentrations, and it is indeed the improved assay sensitivities and specificities that have made it possible to diagnose these milder forms. TSH, T3 and T4 with safety parameters tests were done before treatment and after completion of treatment in both the groups in order to make the proper diagnosis, to exclude other systemic ailments and to assess the efficacy/safety of the proposed herbal drug. Results: The effects of test drug on lowering the raised serum TSH are attributed to the thyroid activities of the test drug which shoes highly significance p<0.01 before and after intervention. In respect of thyroxin there were no significant results between the test and control group. Conclusions: The study concluded that the efficacy of Commiphora mukul (Muqil) on thyroid function was designed to explore the role of Unani herbal drugs in the management of hypothyroidism on Unani principles is effective, safe and cost effective.
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Background: Physiological changes occur during pregnancy. These changes include metabolic, hematologic, cardiovascular, renal, and respiratory changes. In some cases, these changes may alter and lead to complications which result in adverse pregnancy outcomes. In India, hypothyroidism in pregnancy has a prevalence of 4.8–11%. Aims and Objectives: The aim of this study was to estimate the prevalence of hypothyroidism in pregnant women at 12–16 weeks of gestation. Materials and Methods: A cross-sectional study was planned on pregnant women attending the ANC clinic of Outpatient Department of Obstetrics and Gynecology at K.L. E’S Dr Prabhakar Kore Hospital and Medical Research Center Belagavi. Serum thyroid stimulating hormone (TSH) was estimated in the study participants. Serum TSH levels >4.5 ?IU/ml were labeled as hypothyroid pregnant women. Results: In our study, the prevalence of hypothyroidism was observed to be 8.68%. Conclusion: Hence, we conclude that all pregnant women should be screened for hypothyroidism at earlier weeks of gestation.
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Background: Screening for congenital hypothyroidism (CH) is a routine practice in most developed countries of the world. This can be done by measuring cord blood thyroid stimulating hormone (CBTSH). Apart from foetal thyroid status and iodine nutrition status of the population, many perinatal factors may also affect CBTSH. The influence of these perinatal factors may affect the sensitivity of CBTSH as a screening tool for CH. The present study was carried out to study the influence of various perinatal factors on CBTSH level.Methods: It was a cross sectional study conducted in tertiary care centre in North Maharashtra. 793 new-borns were included in study. Effects of perinatal factors like maternal age, parity, gender of the baby, birth weight, mode of delivery, gestational age, birth asphyxia on CBTSH was analysed with appropriate scientific method.Results: The mean TSH level in the study group was 7.56±3.9 mIU/l. Among the associated factors vaginal delivery, low gestational age, low birth weight and birth asphyxia were significantly associated with elevated CBTSH values. Hence, any rise in cord blood TSH should be seen in the light of these factors.Conclusions: Among all the associated factors, primi-parity, vaginal delivery, low gestational age, low birth weight and birth asphyxia were significantly associated with elevated CBTSH values. However, no association was observed between CBTSH values and gender of the baby and maternal age.
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Background: Hypothyroidism is a common endocrine derangement met with in clinical practice. Deficiency of thyroid hormones can have a significant effect on lipid and carbohydrate metabolism. Aims and Objectives: The aim of the study was to study the association of insulin resistance and lipid profile with serum triiodothyronine (T3), tetraiodothyronine (T4), and thyroid-stimulating hormone (TSH) in hypothyroidism. Materials and Methods: A comparative cross-sectional study was conducted in a tertiary care hospital after obtaining clearance from the Institutional Ethics Committee. Thirty primary hypothyroid subjects were selected as cases based on their TSH values (>4 uIU/mL) and thirty normal subjects as controls after proper exclusion and after getting the informed consent. Their fasting plasma glucose levels, lipid profile, and serum T3, T4, TSH were measured. Homeostasis model Assessment using OXFORD HOMA 2 CALCULATOR was used to determine the insulin resistance (HOMA-IR). Results: The mean values of HOMA-IR, total cholesterol, low-density lipoprotein (LDL) cholesterol, and triglycerides were significantly higher in hypothyroid group than in normal controls. HOMA-IR showed a significant negative correlation with T3 and T4. The correlations of HOMA-IR, total cholesterol, LDL cholesterol, and triglycerides with TSH were positive. Conclusion: The present study shows that hypothyroidism leads to an elevated insulin resistance and dyslipidemia.
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Background: In the spread of COVID-19 Less exposure to iodine affects the health of the pregnant woman and fetus, causing miscarriages and premature births. low birth weight, anemia and hypothyroidism in newborns. Changes in levels of thyroid-stimulating hormone besides genetics, and many environmental factors can also affect thyroid function. This research aims to study the impact of environmental factors on thyroid-stimulating hormone in newborns.Methods: The sample consisted of 134 postpartum women randomly selected by simple method from 807 postpartum women in 2020-2022. The data were collected between June-July 2022 by interviewing social, environment, and household economy. Lifestyle, Iodine salt intake, drugs, iodine supplements and quality antenatal care correlation with Thyroid-stimulating hormone were determined by multiple logistic regression, adjusted odd ratio (ORadj), and 95%Confidence Interval (95% CI) were presented.Results: The results revealed that 67.7% were pregnant aged 20-34 years, 50.7% took iodized salt before pregnancy, 67.2% consumed during pregnancy, 45.5% received salt during antenatal care, 30.6% took folate(B9) before pregnancy,53.0%took antenatal care qualitatively and took iodine supplementation (57.5% daily intake, 29.9% intake 4-6 days/week, 11.9% intake 2-3 days/week). Most of them consume high iodine foods not variety and not frequent enough. High iodine supplements/diet intake, household income, COVID-19 infection, and antenatal care qualitatively were not significant. The significant correlation factor was not eating iodized salt, low education level and residing in the sub-district administrative organization. The results of the correlation analysis using Backward elimination showed that positively correlated with pregnant women whose husbands drink alcohol were hypothyroidism 0.3 times (95%CI=0.10-0.66), husbands smoking 0.4 times (95% CI=0.20-0.94, and pre-pregnancy malnutrition were 2.6 times (95%CI=1.17-5.74).Conclusions: The findings iodine affects to health of pregnant women and fetuses, Therefore, a more rigorous monitoring system for Iodized salt should be designed to encourage a higher rate of pregnant women to take iodine supplementation daily.
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OBJECTIVE@#To investigate serum thyroid stimulating hormone (TSH) level and its changes with age in apparently healthy Chinese elderly population and analyze the differences between TSH levels detected using Roche and Snibe electrochemiluminescence immunoassay analyzers.@*METHODS@#General clinical data and frozen fasting serum samples were collected from 5451 apparently healthy Chinese elderly individuals (> 60 years) from 10 centers in different geographic regions in China. Thyroid function indexes including TSH level were detected using Roche and Snibe electrochemiluminescence immunoassay analyzer, and the median (2.5% and 97.5% quantiles) TSH level was calculated. The variations of TSH level among the participants with geographic regions, gender, and age (with an interval of 5 years) were analyzed to determine the influence of these factors on TSH level.@*RESULTS@#The reference ranges of serum TSH level established using Roche and Snibe electrochemiluminescence immunoassay analyzers were 0.42-9.47 mU/L and 0.36-7.98 mU/L, respectively, showing significant differences between the two methods (P < 0.001). The TSH levels measured at two centers in Western China were significantly higher than those at the other centers (P < 0.05). In elderly male population, serum TSH level tended to increase with age, which was not observed in elderly female population. At the age of 60-75 years, women generally had higher serum TSH level than men, but this difference was not observed in the population beyond 75 years.@*CONCLUSION@#In elderly population, serum TSH level can vary with geographic region, gender, and age, but there was no need for establishing specific reference ranges for these factors. The differences between different detection methods should be evaluated when interpreting the detection results of TSH level.
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Aged , Female , Humans , Male , Middle Aged , Asian People , China , Fasting , Health Status , Thyrotropin/bloodABSTRACT
A long-held belief is that pituitary hormones bind to their cognate receptors in classical target glands to actuate their manifold functions. However, a number of studies have shown that multiple types of pituitary hormone receptors are widely expressed in non-classical target organs. Each pituitary gland-derived hormone exhibits a wide range of nonconventional biological effects in these non-classical target organs. Herein, the extra biological functions of pituitary hormones, thyroid-stimulating hormone, follicle-stimulating hormone, luteinizing hormone, adrenocorticotrophic hormone, and prolactin when they act on non-classical organs were summarized, defined by the novel concept of an "atypical pituitary hormone-target tissue axis." This novel proposal explains the pathomechanisms of abnormal glucose and lipid metabolism, obesity, hypertension, fatty liver, and atherosclerosis while offering a more comprehensive and systematic insights into the coordinated regulation of environmental factors, genetic factors, and neuroendocrine hormones on human biological functions. The continued exploration of the physiology of the "atypical pituitary hormone-target tissue axis" could enable the identification of novel therapeutic targets for metabolic diseases.
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Humans , Pituitary Hormones/metabolism , Luteinizing Hormone , Follicle Stimulating Hormone , Prolactin , Pituitary Gland/metabolismABSTRACT
【Objective】 To construct the secretory expression system of insect cells to express the secretory TSHR A subunit protein in the ovarian cells of Spotoma oryzae (sf9). 【Methods】 A recombinant plasmid containing the target protein was constructed, and then the positive bacmid was screened out by the blue and white spots experiment. The verified bacmid was transfected into SF9 insect cells to obtain recombinant baculovirus. The virus was amplified, and the titer level was detected by virus plaque assay. Finally, Western blotting was used to identify the expression of the recombinant protein and optimize the expression conditions. 【Results】 During the construction of the protein expression system, PCR identification and sequencing results confirmed the correctness of the sequences of the recombinant plasmid and the recombinant bacmid. After the transfection of the bacmid, the signs of virus budding were observed in sf9 cells. The virus was collected and amplified. The titer of P1 generation virus was 2×107 pfu/m according to the plaque assay. The recombinant protein was identified by Western blotting and confirmed to be exogenous into the culture medium. The optimal condition for virus infection and protein expression was 72 h after the infection when the multiplicity of infection (MOI) was 1. 【Conclusion】 We constructed an insect cell expression system secreting TSHR 22-289 (55 ku), and the protein could be successfully glycolyzed. This system provides a preliminary basis for the construction and production of its industrial platform and also provides a useful tool for studies on TSHR protein and prevention of GO in the future.
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Objective:To investigate the risk factors of recurrence after surgical resection of differentiated thyroid carcinoma combined with iodine-131 and TSH(Thyroid stimulating hormone) inhibition therapy. Methods:From January 2015 to April 2020, the clinical data of patients with structural recurrence and without recurrence were retrospectively collected after surgical treatment combined with iodine-131 and TSH inhibition therapy in the First Medical Center of PLA General Hospital. The general conditions of the two groups of patients were analyzed and the measurement data in line with the normal distribution was used for comparison between groups. For measurement data with non-normal distribution, the rank sum test was used for inter-group comparison. The Chi-square test was used for comparison between the counting data groups. Univariate and multivariate regression analyses were used to determine the risk factors associated with relapse. Results:The median follow-up period was 43 months(range 18-81 months) and 100 patients(10.5%) relapsed among the 955 patients. Univariate analysis showed that tumor size, tumor multiple, the number of lymph node metastases>5 in the central region of the neck, and the number of lymph node metastases>5 in the lateral region were significantly correlated with post-treatment recurrence(P<0.001, P=0.018, P<0.001, P<0.001). Multivariate analysis showed that tumor size(adjusted odds ratio OR: 1.496, 95%CI: 1.226-1.826, P<0.001), tumor frequency(adjusted odds ratio OR: 1.927, 95%CI: 1.003-3.701, P=0.049), the number of lymph node metastases in the central neck region>5(adjusted odds ratio OR: 2.630, 95%CI: 1.509-4.584, P=0.001) and the number of lymph node metastases in the lateral neck region>5(adjusted odds ratio OR: 3.074, 95%CI: 1.649-5.730, P=0.001) was associated with tumor recurrence. Conclusion:The study showed that tumor size, tumor multiple, the number of lymph node metastases in the central region of the neck>5 and the number of lymph node metastases in the side of the neck >5 are independent risk factors for recurrence of differentiated thyroid cancer after surgical resection combined with iodine-131 and TSH inhibition therapy.
Subject(s)
Humans , Thyroid Cancer, Papillary/surgery , Lymphatic Metastasis/pathology , Retrospective Studies , Neck Dissection , Thyroidectomy/adverse effects , Neoplasm Recurrence, Local/pathology , Thyroid Neoplasms/surgery , Risk Factors , Adenocarcinoma , Thyrotropin , Lymph Nodes/pathologyABSTRACT
Objective:To investigate the correlation between adiponectin gene polymorphism and osteoporosis in patients with differentiated thyroid after thyroid stimulating hormone (thyroid stimulating hormone, TSH) suppression therapy.Methods:A total of 79 patients who underwent resection of thyroid cancer and TSH suppression therapy were collected as research objects. After 5 years of follow-up, the bone mineral density of the patients was measured, and they were divided into normal bone mass group and osteoporosis group. The general data of the two groups of patients were compared, and the distribution frequencies of rs1063539, rs266729, rs3774261, and rs710445 genotypes in the two groups of patients were analyzed. The differences in bone mineral density of patients with different genotypes of rs1063539, rs266729, rs3774261, and rs710445 were analyzed. To explore the risk factors of osteoporosis in patients treated with TSH suppression after differentiated thyroid surgery.Results:General data analysis showed that the family history of osteoporosis ( P=0.021) and preoperative thyroid hormone status ( P=0.022) were significantly different between the two groups (all P<0.05). The genotype frequency deviations of rs1063539, rs266729, rs3774261, and rs710445 conformed to the Hardy-Weinberg equilibrium law. The distribution of the three genotypes of rs1063539 locus was significantly different between the two groups, and the bone mineral density T value of rs1063539 CC+CG genotype (-3.68±0.61) was significantly lower than that of GG type (-3.14±0.47) ( t=3.142, P=0.003). Logistic regression analysis showed that no family history of osteoporosis was a protective factor for osteoporosis in patients with TSH suppression after thyroid cancer surgery ( OR: 0.258, OR 95%CI: 0.082-0.773, P=0.020). Preoperative hyperthyroidism ( OR: 2.203, OR 95%CI: 1.134-4.541, P=0.025) and rs1063539 CC+CG genotype ( OR: 4.392, OR 95%CI: 1.248-17.652, P=0.027) were the risk factors inducing osteoporosis. Conclusion:Adiponectin rs1063539 gene polymorphism is associated with bone mineral density in patients, and rs1063539 CC+CG genotype can increase the risk of osteoporosis in patients treated with TSH suppression after differentiated thyroid surgery.
ABSTRACT
Objective:To explore the diagnostic value of serum thyroid stimulating hormone (TSH) , thyroglobulin antibody (TgAb) , and thyroid peroxidase antibody (TPOAb) in Hashimoto’s thyroiditis (HT) .Methods:90 patients with thyroid diseases admitted to the First People’s Hospital of Huai’an City from Oct. 2019 to Oct. 2022 were selected, including 30 cases of HT (Group A) , 30 cases of toxic diffuse thyroid disease (Group B) , and 30 cases of hypothyroidism (Group C) . Another 30 healthy individuals who underwent physical examination were selected as the control group, and the clinical data and serum indicator levels of all patients were compared.Results:Age, sex, body mass index; There was no significant difference in BMI, family history, smoking history or drinking history ( χ 2=0.327, P=0.806; χ 2=1.358, P=0.716; χ 2=0.231, P=0.875; χ 2=1.617, P=0.655; χ 2=0.592, P=0.898; χ 2=0.889, P=0.828) ; Compared with the control group, TgAb and TPOAb levels in groups A, B and C were higher, TSH levels in groups A and C were higher, and TSH levels in group B were lower ( F=287.96, P=0.000; F=135.59, P=0.000; F=537.05, P=0.000) . According to ROC analysis, the area under the curve for diagnosing HT by TSH, TgAb, and TPOAb were 0.732, 0.779, and 0.883, respectively, with P<0.05; After consistency analysis, there were 16 cases of positive diagnosis in Group A and the control group, with a sensitivity of 46.67%, a specificity of 93.33%, an accuracy of 70.00%, a positive predictive value of 87.50%, a negative predictive value of 63.64%, and Kappa=0.55. Conclusion:The levels of TSH, TgAb, and TPOAb in HT patients are significantly higher than those in healthy patients, and can be used for the diagnosis of this disease with high sensitivity for combined detection.