Hipotiroidismo en mujeres con aborto espontaneo en el Hospital Distrital de Presidente Franco, periodo 2019-2021

Introducción: Las patologías tiroideas se encuentran entre los trastornos endocrinológicos más frecuentes reportados durante el embarazo, en parte debido a los cambios fisiológicos que ocurren generalmente en el primer trimestre y que puede llevar a la pérdida de este. Objetivo: El objetivo fue determinar la prevalencia de hipotiroidismo en mujeres con diagnóstico de aborto espontaneo en el Hospital Distrital de Presidente Franco durante el periodo 2019 a 2021. Materiales y Métodos: Estudio observacional, descriptivo, retrospectivo de corte transversal con muestreo no probabilístico de casos consecutivos, se estudiaron a todas las mujeres que tuvieron aborto espontáneo en el hospital distrital de presidente franco durante los años 2019 a 2021. Se utilizo el software estadístico Stata®12.0 para los cálculos estadísticos. Resultados: Se estudiaron a 432 mujeres que tuvieron abortos espontáneos. En dicho periodo se registró una prevalencia de 3,9%, la mayoría con hipotiroidismo subclínico con un 3,4%. El 52,9% en las edades comprendidas entre 20 a 35 años, 52,9% presentaron unión libre y 47% escolaridad primaria. El 52,9% proceden de zonas urbanas. Conclusión: Se determinó que aquellas perdidas de embarazo relacionado a hipotiroidismo corresponden con mayor frecuencia a Alto Paraná comparado con otra región de nuestro país y a nivel internacional. Además, se encontró el hipotiroidismo subclínico con mayormente en adultos jóvenes, con nivel de escolaridad primaria, la mayoría proveniente de zona rural.

Introduction: Thyroid pathologies are among the most common endocrinological disorders reported during pregnancy, partly due to the physiological changes that typically occur in the first trimester, which can lead to pregnancy loss. Objective: determine the prevalence of hypothyroidism in women diagnosed with spontaneous abortion at the Hospital Distrital de Presidente Franco from 2019 to 2021. Materials and Methods: This observational, descriptive, retrospective, cross-sectional study utilized non-probabilistic sampling of consecutive cases, examining all women who experienced spontaneous abortion at the Hospital Distrital de Presidente Franco during the years 2019 to 2021. Stata®12.0 statistical software was employed for statistical calculations. Results: A total of 432 women who had miscarriages were analyzed. During this period, a prevalence of 3.9% was recorded, with most cases being subclinical hypothyroidism (3.4%). Among these, 52.9% of the 20-35 age group were in a common-law union, and 47% had completed primary school. Additionally, 52.9% were from urban areas. Conclusion: Those pregnancy losses related to hypothyroidism were determined to correspond more frequently in Alto Paraná compared to other regions of our country and internationally. Also, subclinical hypothyroidism was found in young adults, with primary schooling, most of them coming from rural areas.

Gasto energético en reposo y concentración sérica de lipoproteínas de baja densidad en adultos con hipotiroidismo subclínico leve

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.

Thyroid abnormality in patients with psoriasis: prevalence and association with severity

Abstract Background: Psoriasis is associated with several comorbidities and its association with thyroid abnormality has been hypothesized. Objective: To assess the prevalence of thyroid abnormality in Brazilian patients with psoriasis and to analyze its association with severity, presence of psoriatic arthritis and immunobiological treatment. Additionally, to compare results with literature as a control. Methods: In this observational study, clinical and laboratory data of patients followed from January 2018 to December 2019 were analyzed. Thyroid abnormality was assessed through the current history of thyroid disease and laboratory tests - thyrotropin (TSH), free thyroxine (FT4), antithyroid peroxidase (anti-TPO) and antithyroglobulin (anti-TG) antibodies. Patients were classified according to psoriasis severity - Psoriasis Area and Severity Index (PASI), presence of psoriatic arthritis, and current treatment. Subsequently, the results were compared with a control group selected from the literature review. Results: Of the 250 included patients, 161 were eligible. The prevalence of thyroid abnormality was 28.57% and of hypothyroidism, 14.91%. The mean age was 55 years and the median PASI was 2.2. There was no association between thyroid abnormality and PASI (p = 0.8), presence of psoriatic arthritis (p = 0.87), or use of immunobiological therapy (p = 0.13). The literature control group included 6,227 patients and there was a statistically significant difference for the hypothyroidism variable (p < 0.0001).

The impact of diabetes and subclinical hypothyroidism association with coronary artery calcium: results from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)

ABSTRACT Objective: We aimed to analyze the association of diabetes and subclinical hypothyroidism with subclinical atherosclerosis measured by coronary artery calcium (CAC) in the baseline of the ELSA-Brasil study. Materials and methods: CAC was measured using a 64-detector computed tomographic scanner. The association of CAC > 0 was presented as an odds ratio (OR) and 95% confidence intervals (95%CI) in logistic models and as β (95%CI) in linear models after multivariable adjustment for confounders. Results: We analyzed 3,809 participants (mean-age (SD) 50.5 (8.8); 51.7% women). In the main analysis, we did not find an association of diabetes and subclinical hypothyroidism with CAC. However, in stratified analysis according to age strata, we found no significative interaction terms, an important heterogeneity between the groups, with the younger age strata showing an association of the group with both diseases and CAC > 0 (OR 7.16; 95%CI, 1.14; 44.89) with a wide but significative 95%CI, suggesting that the smaller number of participants in the younger group may influence the results. Our findings also showed an association of CAC > 0 and log (CAC+1) with diabetes in logistic (OR, 1.31; 95%CI, 1.05-1.63) and linear models (β, 0.24, 0.16, 0.40), respectively. Diabetes was independently associated with CAC > 0 in linear models. Discussion: In conclusion, our results showed a great heterogeneity in stratified analysis based on age in the younger age strata. Although we found no significant interaction factors, the smaller sample size for the analysis may influence the negative findings.

Assessment of micronutrient intakes, anxiety states and risk factors affecting disease development in individuals with hypothyroidism / Avaliação da ingestão de micronutrientes, níveis de ansiedade e fatores de risco que afetam o desenvolvimento de doenças em indivíduos com hipotireoidismo

ABSTRACT Objective This study aimed to assessment the risk factors affecting development of hypothyroidism and to examine the selected dietary micronutrient intakes of primary hypothyroidism, subclinical hypothyroidism and euthyroid individuals comparing the healthy control group, and to evaluate the relationship between dietary micronutrient intakes and serum thyroid hormones. Additionally, this study planned to observe anxiety severities in different hypothyroidism groups. Methods This case-control study was carried out with 120 individuals: 60 in the patient group and 60 in the control group. The patient group was further subdivided into primary hypothyroidism, subclinical hypothyroidism, and euthyroid groups. A questionnaire and the Beck Anxiety Inventory were administered to all participants. 24-hour food consumption records, anthropometric measurements, biochemical parameters were taken. Results When serum vitamin D level increased by one unit (ng/mL), risk of disease decreased by 1%; and when age (year) increased by one unit, risk of disease increased by 5.1%. Dietary micronutrient intakes were similar in all groups. There were negative correlations between serum T4 levels and selenium intake in primary hypothyroidism group, and serum TSH levels and copper intake in subclinical hypothyroidism group, and serum TSH levels and iodine intake in control group. Beck Anxiety Inventory scores of patient groups were higher than control group. There was no statistically difference between primary, subclinical and euthyroid hypothyroidism groups in terms of anxiety scores. Conclusion Serum vitamin D level and age affected the risk of hypothyroidism. Micronutrient intake was associated with thyroid parameters. Anxiety was higher in hypothyroid patients, independent of thyroid hormone levels.

RESUMO Objetivo Este estudo teve como objetivo avaliar os fatores de risco que afetam o desenvolvimento do hipotireoidismo e examinar os consumo de micronutrientes dietéticos selecionados em indivíduos com hipotireoidismo primário, hipotireoidismo subclínico e eutireoideo, comparando-os com o grupo controle saudável, e avaliar a relação entre os consumo de micronutrientes dietéticos e as hormonas tiroideias séricas. Além disso, este estudo objetivou observar a gravidade da ansiedade em diferentes grupos de hipotireoidismo. Métodos Este estudo de caso-controle foi realizado com 120 indivíduos: 60 no grupo pacientes e 60 no grupo controle. O grupo pacientes foi ainda subdividido em hipotireoidismo primário, hipotireoidismo subclínico, e grupos eutróide. Um questionário e o Inventário de Ansiedade de Beck foram administrados a todos os participantes. Foram recolhidos registos de consumo alimentar diário (i.e., 24 horas por dia), medições antropométricas, e parâmetros bioquímicos. Resultados Quando o nível de vitamina D no soro aumentou uma unidade (ng/mL), o risco de doença diminuiu 1%; e quando a idade (ano) aumentou uma unidade, o risco de doença aumentou 5.1%. A ingestão de micronutrientes na dieta foi semelhante em todos os grupos. Verificaram-se correlações negativas entre os níveis séricos de T4 e a ingestão de selênio no grupo com hipotireoidismo primário, e entre os níveis séricos de TSH e a ingestão de cobre no grupo com hipotireoidismo subclínico, e entre os níveis séricos de TSH e a ingestão de iodo no grupo controle. Pontuação do Inventário de Ansiedade de Beck dos grupos pacientes foram superiores ao grupo controle. Não houve diferença estatística entre os grupos de hipotireoidismo primário, subclínico e eutireoideo em termos de pontuação de ansiedade. Conclusão O nível sérico de vitamina D e a idade afetaram o risco de hipotireoidismo. A ingestão de micronutrientes foi associada aos parâmetros da tireoide. A ansiedade foram maior nos doentes com hipotireoidismo, independentemente dos níveis da hormona tiroideia.

Síndrome metabólico e hipotiroidismo: un estudio transversal en una población ecuatoriana

Introducción: el síndrome metabólico y el hipotiroidismo son condiciones muy frecuentes y a menudo superpuestas. Ambos son precursores bien establecidos de la enfermedad cardiovascular aterogénica. Objetivo: evaluar la asociación entre el hipotiroidismo y el síndrome metabólico en pacientes que asisten a la consulta de medicina interna del Hospital IESS de Riobamba, Ecuador. Metodología: se realizó una investigación de tipo descriptiva, correlacional con un diseño no experimental de corte transversal desde enero de 2022 hasta julio de 2023. Se incluyeron 985 sujetos de ambos sexos, mayores de 25 años. A todos los pacientes se les realizó un exhaustivo examen físico y se tomaron muestras de sangre para la realización de pruebas bioquímicas y hormonales. Resultados: 84,97% de los participantes eran eutiroideos, 1,93% presentaron hipotiroidismo manifiesto y 4,97% hipotiroidismo subclínico, mientras que 32,99% tenían síndrome metabólico. Se encontraron diferencias significativas en la edad, peso, circunferencia de cintura, colesterol total, LDL colesterol, triglicéridos, glucosa postpandrial y HOMA-IR entre los sujetos con hipotiroidismo manifiesto y los eutiroideos (p<0,05). Se observó una correlación positiva entre la TSH y todos los componentes del síndrome metabólico (p<0,05). La prevalencia de síndrome metabólico fue significativamente mayor en los sujetos con hipotiroidismo manifiesto (p < 0,05) que en los demás grupos. Se observó que los niveles de T4L (OR 8,82; IC 95% 1,56-49,8) y TSH (OR 1,61; IC 95% 1,19-2,18) son factores de riesgo para el desarrollo de síndrome metabólico. Conclusión: el hipotiroidismo y el síndrome metabólico están altamente asociados. Es recomendable que los sujetos con hipotiroidismo sean examinados para detectar síndrome metabólico y viceversa. La evaluación de la función tiroidea en pacientes con este síndrome puede ayudar a identificar y prevenir el riesgo de eventos cardiovasculares y cerebrovasculares.

Introduction: Metabolic syndrome and hypothyroidism are widespread and often overlapping conditions. Both are well-established precursors of atherogenic cardiovascular disease. Objective: To evaluate the association between hypothyroidism and metabolic syndrome in patients attending the internal medicine consultation at the IESS Hospital in Riobamba, Ecuador. Methodology: A descriptive, correlational research study was conducted with a non-experimental cross-sectional design from January 2022 to July 2023. Nine hundred eighty-five subjects of both sexes and over 25 years of age, were included. All patients underwent a thorough physical examination and blood samples were taken for biochemical and hormonal tests. Results: Eighty-four-point ninety-seven percent of the participants were euthyroid, 1.93% presented overt hypothyroidism, 4.97% had subclinical hypothyroidism, and 32.99% had metabolic syndrome. Significant differences in age, weight, waist circumference, total cholesterol, LDL cholesterol, triglycerides, postprandial glucose, and HOMA-IR were found between subjects with manifest hypothyroidism and euthyroid subjects (p<0.05). A positive correlation was observed between TSH and all components of the metabolic syndrome (p<0.05). The prevalence of metabolic syndrome was significantly higher in subjects with overt hypothyroidism (p < 0.05) than in the other groups. It was observed that the levels of FT4 (OR 8.82; 95% CI 1.56-49.8) and TSH (OR 1.61; 95% CI 1.19-2.18) were risk factors for the development of the metabolic syndrome. Conclusion: Hypothyroidism and metabolic syndrome are highly associated. It is recommended that subjects with hypothyroidism be screened for metabolic syndrome and vice versa. Evaluation of thyroid function in patients with this syndrome can help identify and prevent the risk of cardiovascular and cerebrovascular events.

Tratamiento con TRIAC en pacientes pediátricos con deficiencia de MCT8 / Treatment with TRIAC in pediatric patients with MCT8

Los transportadores de monocarboxilatos (MCT) permiten el ingreso celular de hormonas tiroideas, especialmente en el sistema nervioso central (SNC), donde son indispensables para el neurodesarrollo. La deficiencia de MCT8 produce la combinación de hipotiroidismo en SNC e hipertiroidismo periférico, caracterizada por T3 elevada. El único tratamiento actualmente disponible es el ácido 3,3',5-triyodotiroacético (TRIAC), un análogo de hormonas tiroideas que tiene como objetivo mejorar la tirotoxicosis periférica y prevenir la progresión del deterioro neurológico. En el presente artículo, se evalúan las características clínicas, imagenológicas, bioquímicas y genéticas de 4 pacientes con deficiencia de MCT8 tratados con TRIAC hasta la fecha, las dosis utilizadas y la respuesta al tratamiento.

Monocarboxylate transporters (MCTs) allow the cellular entry of thyroid hormones, especially into the central nervous system (CNS), where they are crucial for neurodevelopment. MCT8 deficiency results in the combination of hypothyroidism in the CNS and peripheral hyperthyroidism, characterized by elevated T3 levels. The only treatment currently available is 3,3',5-triiodothyroacetic acid (TRIAC), a thyroid hormone analogue aimed at improving peripheral thyrotoxicosis and preventing the progression of neurological impairment. Here we assess the clinical, imaging, biochemical, and genetic characteristics of 4 patients with MCT8 deficiency who have received TRIAC to date, the doses used, and the response to treatment.

Administración subcutánea de levotiroxina en hipotiroidismo refractario / Subcutaneous administration of levothyroxine in refrac tory hypothyroidism

Resumen El hipotiroidismo generalmente se puede tratar de manera efectiva con levotiroxina (LT-4) oral. Sin em bargo, el hipotiroidismo refractario al tratamiento con LT-4 es una condición clínica frecuente. Entre las causas se encuentra la falta de adherencia, interacciones con alimentos u otros medicamentos y enfermedades gas trointestinales, como enfermedad inflamatoria intestinal y síndromes de intestino corto. El aumento de la dosis oral de LT-4 no siempre es eficaz en estos escenarios. Por lo tanto, pueden ser necesarias otras vías de administración. En este reporte, evaluamos modalidades alternativas de tratamiento para el hipotiroidismo re fractario y presentamos dos pacientes con malabsorción intestinal tratadas con éxito mediante la administración subcutánea de LT-4.

Abstract Hypothyroidism can usually be treated effectively with oral levothyroxine (LT-4) supplementation. However, hypothyroidism refractory to treatment with LT-4 is a common clinical condition. Causes include poor com pliance, interactions with food or other medications, and gastrointestinal diseases, such as inflammatory bowel disease and short bowel syndromes. Increasing the oral dose of LT-4 is not always effective in these scenarios. Therefore, other routes of administration may be neces sary. In this report, we evaluate alternative treatment modalities for refractory hypothyroidism and present two patients with intestinal malabsorption successfully treated by subcutaneous administration of LT-4.

Uso adecuado de las pruebas de laboratorio para la evaluación de la función tiroidea en pediatría / Appropriate use of laboratory tests for evaluation of thyroid function in pediatrics

Las pruebas de función tiroidea (PFT) son esenciales para el diagnóstico preciso y el seguimiento eficaz de la disfunción tiroidea. Existe un incremento progresivo y estable de los pedidos de PFT, incluso se han incorporado las mismas a los exámenes de salud anuales en niños sanos. Representan más del 60% de las pruebas realizadas en el laboratorio de endocrinología, tanto en adultos como en los laboratorios especializados en pediatría. Para hacer un uso eficiente de las PFT, antes de solicitarlas debemos preguntarnos… ¿Para quién? ¿Cuándo solicitarlas? ¿Qué pruebas solicitar? ¿Cómo solicitarlas? y ¿Cómo interpretar correctamente los resultados? Un resultado anormal en las PFT no siempre implica patología tiroidea asociada. Las PFT tienen importante variabilidad intra e interindividual lo que hace más compleja su correcta interpretación. La pesquisa de enfermedad tiroidea neonatal es un importante aporte a la prevención de la deficiencia mental en la infancia, su aplicación obligatoria posibilita un diagnóstico temprano, para asegurar su éxito debe considerarse en el marco de un programa integral de detección con estrategias de confirmación, tratamiento temprano y seguimiento a corto, mediano y largo plazo. No debe hacerse un uso indiscriminado de la prueba de estímulo con TRH en el diagnóstico de la patología tiroidea. En pediatría la estrategia de tamiz de enfermedad tiroidea es conveniente realizarla mediante la medición de por lo menos TSH y T4 libre e incluir la determinación de ATPO en grupos de riesgo, a diferencia de la determinación aislada de TSH como es recomendado en adultos. (AU)

Thyroid function tests (TFTs) are essential for accurate diagnosis and effective monitoring of thyroid dysfunction. There is a progressive and steady increase in requests for TFTs, and they have even been incorporated into annual health examinations in healthy children. They represent more than 60% of the tests performed in the endocrinology laboratory, both in adults and in specialized pediatric laboratories. To efficiently use TFTs, before requesting them we should ask ourselves... For whom? When to request them? Which tests to request? How to request them? and How to correctly interpret the results? An abnormal TFT result does not always imply thyroid disease. TFTs have significant intra- and inter-individual variability, which makes their correct interpretation more complex. Screening for newborn thyroid disease is an important contribution to the prevention of intellectual disability in childhood and its mandatory use enables early diagnosis; however, to ensure the test to be successful, it should be considered within the framework of a comprehensive screening program with strategies for confirmation, early treatment, and short-, medium-, and long-term follow-up. The TRH stimulation test in the diagnosis of thyroid disease should not be used indiscriminately. In children, the screening strategy for thyroid disease should be performed by measuring at least TSH and free T4 and include the measurement of TPO-ab in risk groups, as opposed to the isolated measurement of TSH as recommended in adults. (AU)

Obtener un mejor tratamiento para el paciente con hipotiroidismo / Establishing Better Treatment for Hypothyroidism Patients

Introducción: El hipotiroidismo es una entidad de visita frecuente al endocrinólogo, establecer el mejor tratamiento es un desafío, a pesar del manejo adecuado y de un control hormonal óptimo, en ocasiones los pacientes continúan con los síntomas que afectan su calidad de vida, por lo que el tratamiento debe ser individualizado, basado en la mejor evidencia. Objetivo: Establecer las mejores opciones terapéuticas en las diferentes formas de presentación del hipotiroidismo. Métodos: Se realizó una búsqueda bibliográfica no sistemática en las bases de datos de PubMed, Medline, LILACS, EMBASE, Redalyc y guías internacionales. Los criterios de inclusión fueron publicaciones en inglés y español, en las que el título, palabras clave o resumen incluyen información pertinente al objetivo de estudio, periodicidad no mayor a los 5 años a excepción de las guías que son las últimas revisiones. En la búsqueda se obtuvieron 30 artículos de los cuales fueron 14 seleccionados. Conclusiones: Se establecieron las opciones terapéuticas con el fin de obtener un mejor tratamiento para el paciente hipotiroideo que debe ser individualizado y basado en la mejor evidencia, para alcanzar un control adecuado de su enfermedad, mejorar la calidad de vida y evitar complicaciones relacionadas con esta patología(AU)

Introduction: Hypothyroidism is an entity that is frequently seen at the endocrinologist´s. establishing the best treatment is a challenge, despite proper management and optimal hormonal control, sometimes patients continue with symptoms which affect their quality of life, therefore that treatment should be individualized, based on the best evidence. Objective: To establish the best therapeutic options in hypothyroidism different forms of presentation. Methods: A non-systematic bibliographic search was carried out in PubMed, Medline, LILACS, EMBASE, Redalyc databases and in the international guidelines. The inclusion criteria were publications in English and Spanish, in which the title, keywords or abstract include relevant information to the objective of the study, with a periodicity of no more than 5 years, except for the guidelines that the latest revisions were used. In the search, 30 articles were retrieved, 14 which were selected. Conclusions: The therapeutic options were established in order to find better treatment for hypothyroid patients, which must be individualized and based on the best evidence, to achieve adequate control of the disease, to improve the quality of life and to avoid related complications(AU)

Effect of aerobic training on depression and thyroid function in treated hypothyroid women / Efeito do treinamento aeróbico na depressão e função tireoidiana em mulheres com hipotireoidismo tratado

INTRODUCTION: Hypothyroidism is commonly associated with depression and a slowing in mental activity. OBJECTIVES: The current investigation aimed to investigate the effect of aerobic training on depression and thyroid function in treated hypothyroid females. METHODS AND MATERIALS: Thirty women diagnosed with primary hypothyroidism that was regulated and accompanied by mild to moderate levels of depression completed a 12-week randomized controlled exercise trial involving two equal groups: aerobic (n = 15) and control (n = 15) groups. The exercising group performed three sessions of aerobic exercise per week at low to moderate intensity for 12 consecutive weeks while the control group performed no exercise intervention during the same duration. At baseline and post-intervention, Beck Depression Inventory score (BDIS), thyroid stimulating hormone (TSH) and free thyroxin (T4) were assessed. RESULTS: The exercising group showed significant improvements in BDIS, TSH and free T4 compared to baseline (p < 0.05) with negligible change in the control group (p > 0.05). As compared to the control, all measured items differed significantly in favor to the aerobic training group. CONCLUSION: In women with treated hypothyroidism, aerobic training can minimize depressive symptoms and enhance thyroid function.

INTRODUÇÃO: O hipotireoidismo é comumente associado à depressão e à lentidão da atividade mental. OBJETIVOS: A presente investigação teve como objetivo investigar o efeito do treinamento aeróbico na depressão e na função tireoidiana em mulheres com hipotireoidismo tratado. MÉTODOS E MATERIAIS: Trinta mulheres diagnosticadas com hipotireoidismo primário que foi regulado e acompanhado por níveis leves a moderados de depressão completaram um teste de exercício controlado randomizado de 12 semanas envolvendo dois grupos iguais: aeróbico (n = 15) e controle (n = 15). O grupo de exercício realizou três sessões de exercício aeróbico por semana em intensidade baixa a moderada por 12 semanas consecutivas, enquanto o grupo de controle não realizou nenhuma intervenção de exercício durante a mesma duração. No início e pós-intervenção, o escore do Inventário de Depressão de Beck (BDIS), hormônio estimulante da tireoide (TSH) e tiroxina livre (T4) foram avaliados. RESULTADOS: O grupo de exercícios apresentou melhorias significativas em BDIS, TSH e T4 livre em comparação com a linha de base (p < 0,05) com alteração insignificante no grupo de controle (p > 0,05). Em comparação com o controle, todos os itens medidos diferiram significativamente em favor do grupo de treinamento aeróbico. CONCLUSÃO: Em mulheres com hipotireoidismo tratado, o treinamento aeróbico pode minimizar os sintomas depressivos e melhorar a função da tireoide.

Prevalence of thyroid dysfunction in neonates receiving parenteral nutrition in the intensive care unit

Abstract Objective: The use of parenteral nutrition (PN) formulations that do not contain iodine can contribute to the deficiency of this mineral, potentially leading to hypothyroidism and, ultimately, neurocognitive impairments. This study aimed to evaluate TSH alterations in newborns receiving PN. Methods: Retrospective study of neonatal intensive care unit patients receiving PN for > 15 days. Nutritional, anthropometric, and biochemical variables (TSH, T4, CRP) were analyzed. Hypothyroidism was defined by TSH > 10 mU/L. Results: Two hundred newborns were evaluated [156 (78%) preterm, 31±5 weeks of gestational age, 112 (56%) with very or extremely low birth weight]. The median (IQR) hospital stay was 68 (42-110) days, PN duration was 31 (21-47) days, and 188 (94%) patients also received enteral nutrition. Overall, 143 (71.5%) newborns underwent at least one TSH measurement. The prevalence of hypothyroidism was 10.5%. The Median PN duration in this group was 51 (34-109) days. Among those with hypothyroidism, 10 received Lugol's solution and six levothyroxine. Thirteen patients received prophylactic Lugol's solution with a median PN duration of 63 (48-197) days. TSH levels correlated positively with PN duration (r = 0.19, p = .02). Conclusions: The present data suggest that changes in TSH and T4 levels are present in neonates receiving PN for > 15 days, suggesting this population may be at risk for developing hypothyroid-ism. Therefore, the authors suggest that TSH and T4 measurements should be included as routine in neonatal patients receiving PN for > 15 days if PN formulations are not supplemented with iodine, and that iodine supplementation be provided as necessary.

Cognitive outcome of 458 children over 25 years of neonatal screening for congenital hypothyroidism

Abstract Objectives: To describe the neurocognitive profile of 458 children with congenital hypothyroidism detected by neonatal screening, followed under the same treatment protocol over 25 years. To correlate estimated full-scale IQ (FSIQ) scores with age at the start of treatment, disease severity, and maternal education. Methods: Observational, analytical, retrospective, and longitudinal cohort study, that evaluated children detected between 1991 and 2014, who underwent at least one psychometric assessment (WPPSI- R and/or WISC-III). Estimated FSIQ scores are described and correlated with prognosis determinants. Results: Median T4 at diagnosis was 2.8 µg/dL (0.0-16.5), the median age at the start of treatment was 18.5 days (3-309). Maternal education (n = 445): 2.7% of illiteracy, 59.8% with basic education. Estimated FSIQ scores were 88.0 (±11.8) in WPPSI-R (age 5.6 ± 0.5 years) and 84.1 (±13.0) in WISC-III (age 9.1 ± 1.4 years). The intellectual deficit was identified in 11.6%. Correlation between age at the start of treatment and estimated FSIQ was found only in the WPPSI-R test (p = 0.02). Initial T4 and maternal education significantly correlated with estimated FSIQ scores in both tests, with the latter being the most important determining factor. Conclusions: In this large cohort of mainly low socioeconomic status children, most children achieved normal cognitive levels; however, a significant percentage presented with below-average estimated FSIQ scores and intellectual deficits. Maternal education was the main determining factor in cognitive level followed by hypothyroidism severity.

Blood tests and use of nutritional supplements in a cohort of Brazilian children with trisomy 21

Abstract Objective: To describe the use of nutritional supplements and blood status (hemogram, lipidogram, hepatic function, inflammatory markers, minerals, and homocysteine) in a sample of Brazilian T21 children with private health support before their first consultation with a T21 expert. Method: This descriptive cross-sectional study enrolled 102 participants. Brazilian families with a T21 member under 18 years old were contacted and those that consented answered a survey regarding socio-demographics and the use of nutritional supplements and shared the blood tests that their T21 members have collected for the first consultation with a T21 expert. Results: Frequencies and percentages were used to describe the variables. The most used supplements included vitamins (A, C and D), minerals (zinc and iron), omega-3, and antioxidants (curcumin). Hypothyroidism was observed in 56.9% of the participants. Hemogram alterations (increased hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin and red cell distribution width, leukopenia, and lymphocytopenia), dyslipidemia, altered hepatic and inflammatory blood markers were frequently found. Conclusions: Nutritional supplements (mainly vitamins, minerals, omega-3 and antioxidants) are frequently used by Brazilian T21 children independently of professional counseling and/or supervision and should be a question to be raised during the clinical anamnesis since some of them may impact medical conduct. Moreover, many blood tests are altered in this population and clinicians should be aware of them in order to warrant an appropriate screening and the implementation of risk management measures as soon as possible and improve the general health of these persons.

Calidad de vida en pacientes con enfermedades tiroideas

Introducción: Las enfermedades del tiroides son relativamente frecuentes, constituyen un importante grupo dentro de las enfermedades crónicas no transmisibles. Objetivo: Determinar la calidad de vida en pacientes con enfermedades tiroideas. Métodos: Se realizó un estudio observacional, descriptivo y transversal. El universo estuvo constituido por 210 pacientes con diagnóstico de enfermedades tiroideas, que cumplieron con los criterios de inclusión y exclusión previstos en el estudio, previo consentimiento informado y la muestra no probabilística de 198 pacientes. Se utilizaron las variables: edad, sexo, enfermedad tiroidea diagnosticada (hipertiroidismo, hipotiroidismo, bocio difuso eutiroideo) y calidad de vida (facetas según dimensiones, según la clasificación de expertos y enfermedades tiroideas y la calidad de vida integral según enfermedades tiroideas). Se utilizó el cuestionario World Health Organization Quality of Life. Resultados: Predominó el hipotiroidismo como afección tiroidea más frecuente en las féminas entre 50 a 59 años. Las manifestaciones clínicas que puntuaron las medias más bajas fueron el dolor y malestar, seguido de indicaciones médicas y sentimientos negativos; las dimensiones físicas y psicológicas puntuaron con medias bajas, al igual que el ambiente, valores considerados como deficientes. Conclusiones: Predominó una calidad de vida integral media en el mayor por ciento de los pacientes, estas enfermedades deben ser identificadas a tiempo, para evitar otras complicaciones en diferentes sistemas del organismo que pudieran comprometer la vida del paciente.

Introduction: Thyroid diseases are relatively frequent; they constitute an important group within chronic non-communicable diseases. Objective: To determine the quality of life in patients with thyroid diseases. Methods: An observational, descriptive and cross-sectional study was carried out. The universe (210 patients) with a diagnosis of thyroid diseases, who met the inclusion and exclusion criteria provided for in the study, prior informed consent, and the non-probabilistic sample (198 patients). The variables used were: age, sex, diagnosed thyroid disease (hyperthyroidism, hypothyroidism, diffuse euthyroid goiter) and quality of life (facets according to dimensions, according to expert classification and thyroid diseases and comprehensive quality of life according to diseases thyroid). The World Health Organization Quality of Life questionnaire was used. Results: Hypothyroidism predominated as the most frequent thyroid condition in women between 50 and 59 years of age. The clinical manifestations that scored the lowest average were pain and discomfort, followed by medical indications and negative feelings; the physical and psychological dimensions scored with low averages, as well as the environment, values ​​considered deficient. Conclusions: An average comprehensive quality of life prevailed in the highest percentage of patients; these diseases must be identified in time, to avoid other complications in different body systems that could compromise the patient's life.

Predictive factors for the diagnosis of permanent congenital hypothyroidism and its temporal changes in Sergipe, Brazil - A real-life retrospective study

ABSTRACT Objectives: Congenital hypothyroidism (CH) can be permanent (PCH) or transient (TCH). While the importance of thyroxine in myelination of the brain is undisputed, the benefits to neurodevelopmental outcomes of TCH treatment are controversial. Our objectives were to determine predictive factors for PCH and verify its prevalence changes over time. Subjects and methods: A total of 165 children were evaluated at 3 years of age to verify the diagnosis of PCH. 130 were submitted to a two-step cluster analysis, with the aim of grouping them into homogeneous clusters. The mean incidence of PCH and TCH was calculated from 2004 to 2010 and 2011 to 2015. Results: Sixty-six children were diagnosed with PCH, and 99 were diagnosed with TCH. Eighty-one percent of PCH children and all TCH children with thyroid imaging had glands in situ. Eighty children (61.5%) were in Cluster 1, 8 children (6.2%) were in Cluster 2 and 42 children (32.3%) were in Cluster 3. No children had PCH in Cluster 1, while 87.5% of children in Cluster 2 and all children in Cluster 3 had PCH. The most important predictor for PCH was the initial serum TSH, which was marginally higher in importance than the blood spot TSH, followed by the initial serum free T4. The mean incidence of PCH (odds ratio: 1.95, 95% CI 1.36 to 2.95, p < 0.0001) and TCH (odds ratio 1.33, 95%, CI 1.02 to 1.77, p = 0,038) increased over time. Conclusions: The most important PCH predictors are the initial serum TSH and the blood spot TSH. The mean incidence of both PCH and TCH in our series increased.

Epidemiological profile of congenital hypothyroidism at a southern Brazilian state

ABSTRACT Objective: To determine the incidence of congenital hypothyroidism (CH) over a 10-year period at the Reference Service in Neonatal Screening of the state of Rio Grande do Sul (RSNS-RS). Subjects and methods: Historical cohort study including all newborns screened for CH by the RSNS-RS from January 2008 until December 2017. Data of all newborns with neonatal TSH (neoTSH; heel prick test) values ≥ 9 mIU/L were collected. According to neoTSH values, the newborns were allocated into two groups: Group 1 (G1), comprising newborns with neoTSH ≥ 9 mIU/L and serum TSH (sTSH) < 10 mIU/L, and Group 2 (G2), comprising those with neoTSH ≥ 9 mIU/L and sTSH ≥ 10 mIU/L. Results: Of 1,043,565 newborns screened, 829 (0.08%) had neoTSH values ≥ 9 mIU/L. Of these, 284 (39.3%) had sTSH values < 10 mIU/L and were allocated to the G1 group, while 439 (60.7%) had sTSH ≥ 10 mIU/L and were allocated to the G2 group, and 106 (12.7%) were considered missing data. The overall incidence of CH was 42.1 per 100,000 newborns screened (95% confidence interval [CI] 38.5-45.7/100,000) or 1:2377 screened newborns. The sensibility and specificity of neoTSH ≥ 9 mIU/L were 97% and 11%; of neoTSH 12.6 mUI/L, 73% and 85% respectively. Conclusion: In this population, the incidence of permanent and transitory CH was 1:2377 screened newborns. The neoTSH cutoff value adopted during the study period showed excellent sensibility, which matters for a screening test.

Is there an association between endometriosis and thyroid autoimmunity?

SUMMARY OBJECTIVE: It has been suggested that non-uterine endometrial implants can express thyroid-stimulating hormone receptors, thus inducing the formation of thyroid-stimulating immunoglobulin. We aimed to compare the autoantibody positivity in patients with and without endometriosis and to determine whether there is a difference in the incidence of thyroid diseases. METHODS: This prospective observational study was conducted on 102 women who had been operated on for benign gynecological diseases. Cases enrolling in the study were divided into two groups: the study group with endometriosis (n=51) and the control group without endometriosis (n=51). The blood tests for thyroid-stimulating hormone, free thyroxine (fT4), thyroid-stimulating immunoglobulin, and anti-thyroid peroxidase antibody levels were checked. RESULTS: The mean thyroid-stimulating immunoglobulin level was found to be higher in the endometriosis group than in the control group. However, this difference was not statistically significant. No significant difference was detected between endometriosis and control groups in terms of anti-thyroid peroxidase antibody and thyroid-stimulating hormone levels. The mean fT4 value (0.97±0.13 ng/dL) of the endometriosis patients was found to be significantly lower than the control group (1.08±0.21 ng/dL) (p=0.002; p<0.05). The mean anti-thyroid peroxidase antibody value of cases with bilateral endometrioma (82.21±252.29 IU/mL) was significantly higher than cases with unilateral endometrioma (15.81±83.13 IU/mL) (p=0.028; p<0.05). There is a positive and significant relationship between the size of endometriosis and anti-thyroid peroxidase antibody values (p=0.011; p<0.05). CONCLUSION: This study points to an association between endometrioma diameter and anti-thyroid peroxidase antibody values which can be a stepping stone for new studies evaluating this hypothesis further.

The association of diabetes, subclinical hypothyroidism and carotid intima-media thickness: results from the Brazilian Longitudinal Study of Adult Health (ELSA-Brazil)

Abstract Introduction: The association of diabetes with subclinical thyroid diseases may increase the risk of cardiovascular diseases. We analyzed the association of subclinical hypothyroidism, diabetes, and both diseases with carotid Intima-Media Thickness (cIMT) as a surrogate maker for early cardiovascular disease in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Methods: Cross-sectional analysis with data from the 3rd visit (2017‒2019). Linear regression models were used to evaluate the association of subclinical hypothyroidism, diabetes and of both diseases with a cIMT presented as Beta (95% Confidence Interval - 95% CI) without adjustment, with adjustment for sociodemographic variables (Model 1) and multivariable adjustment (Model 1 more cardiovascular risk factors). We also used logistic regression models to analyze the Odds Ratio (OR) and 95% CI for the association of both diseases using cIMT > P75%. Results: After the exclusion of patients with previous cardiovascular disease, 5,077 participants with no diseases, 1578 with diabetes, 662 with subclinical hypothyroidism, and 234 with both diseases were included in the analysis. Linear regression models showed an association of cIMT with only diabetes (β = 0.019; 95% CI 0.012 to 0.027; p < 0.0001) and subclinical hypothyroidism more diabetes (β = 0.03; 95% CI 0.010‒0.047, p < 0.0001). The logistic regression model reported an association between diabetes and CIMT higher than P75% (OR = 1.49, 95% CI 1.30‒1.71). No interaction between diabetes and subclinical hypothyroidism was detected using cIMT respectively as a continuous (p = 0.29) or as a categorical variable (p = 0.92). Discussion: Diabetes was associated with higher cIMT values. However, no additive effect of subclinical hypothyroidism associated with diabetes over cIMT was detected.

Hipotiroidismo y su asociación con otras patologías: una revisión narrativa / Hypothyroidism and its association with other pathologies: a narrative review

Introducción: El hipotiroidismo es la insuficiente producción de hormona tiroidea, para satisfacer las necesidades corporales. Este puede ser primario (con pérdida de la función de la glándula tiroidea) o secundario (por falta de estimulación de la glándula). Dada la alta prevalencia del hipotiroidismo, y frecuentes asociaciones con otras enfermedades, se realizó una revisión que puntualiza aspectos de interés clínico en esta patología, que pueden resultar útiles en la práctica médica. Metodología: Se efectuó una búsqueda bibliográfica en PubMed, PubMed Central, MEDLINE Complete, Epistemonikos, Europe PMC y Scielo. Se buscaron los términos "hipotiroidismo" y "tiroides", y se acortaron los artículos a los últimos 5 años. Resultados: Se incluyeron en total 36 artículos publicados en Inglés y en Español. Se seleccionaron aquellos relacionados al hipotiroidismo que exponen asociaciones con otras patologías. Entre estas patologías se encuentra la diabetes, las dislipidemias, enfermedades cardiovasculares, hepáticas, entre otras. Conclusiones: El hipotiroidismo es una patología prevalente que se asocia de forma frecuente con muchas otras comorbilidades que hay que tener en cuenta a la hora de abordar estos pacientes, y con ello tomar las mejores decisiones diagnósticas y terapéuticas.

Introduction: Hypothyroidism is the insufficient production of thyroid hormone to meet the bodily needs. This can be primary (with loss of function of the thyroid glands) or secondary (due to lack of stimulation of the glands). Given the high prevalence of hypothyroidism, and frequent associations with other diseases, a review was carried out that points out aspects of clinical interest in this pathology, which may be useful in medical practice. Methodology: A bibliographic search was carried out in PubMed, PubMed Central, MEDLINE Complete, Epistemonikos, Europe PMC and Scielo. The terms "hypothyroidism" and "thyroid" were searched, and the articles were shortened to the last 5 years. Results: A total of 36 articles published in English and Spanish were included. Those related to hypothyroidism that exhibit associations with other pathologies were selected. These pathologies include diabetes, dyslipidemia, cardiovascular and liver diseases, among others. Conclusions: Hypothyroidism is a prevalent pathology that is frequently associated with many other comorbidities that must be taken into account when dealing with these patients, and thus make the best diagnostic and therapeutic decisions.