Thyrotropin
Mostrando 13-24 de 325 artigos, teses e dissertações.
-
13. Gender, race and socioeconomic influence on diagnosis and treatment of thyroid disorders in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)
Thyroid diseases are common, and use of levothyroxine is increasing worldwide. We investigated the influence of gender, race and socioeconomic status on the diagnosis and treatment of thyroid disorders using data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), a multicenter cohort study of civil servants (35-74 years of age) from six Bra
Braz J Med Biol Res. Publicado em: 23/06/2015
-
14. Fetuin-A levels in hyperthyroidism
OBJECTIVE: Fetuin-A is a protein secreted from the liver that inhibits arterial calcification deposition and can contribute to insulin resistance. Hyperthyroidism is also associated with insulin resistance. It is not known whether hyperthyroidism has an effect on fetuin-A levels. METHODS: We measured fetuin-A levels and homeostasis model of assessment-insuli
Clinics. Publicado em: 2013
-
15. Thyroid nodule management: clinical, ultrasound and cytopathological parameters for predicting malignancy
Although fine-needle aspiration cytology is considered to be the reference method for evaluating thyroid nodules, the results are inaccurate in approximately 10-30% of cases. Several studies have attempted to predict the risk of malignancy in thyroid nodules based on age, nodularity, thyrotropin values, thyroid autoimmune disease, hot/cold nodule status, and
Clinics. Publicado em: 2012-08
-
16. Radioiodine plus recombinant human thyrotropin do not cause acute airway compression and are effective in reducing multinodular goiter
Recombinant human thyrotropin (rhTSH) reduces the activity of radioiodine required to treat multinodular goiter (MNG), but acute airway compression can be a life-threatening complication. In this prospective, randomized, double-blind, placebo-controlled study, we assessed the efficacy and safety (including airway compression) of different doses of rhTSH asso
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-03
-
17. Estradiol decreases iodide uptake by rat thyroid follicular FRTL-5 cells
Estradiol has well-known indirect effects on the thyroid. A direct effect of estradiol on thyroid follicular cells, increasing cell growth and reducing the expression of the sodium-iodide symporter gene, has been recently reported. The aim of the present investigation was to study the effect of estradiol on iodide uptake by thyroid follicular cells, using FR
Publicado em: 2010
-
18. Existem interferências hormonais e modificações morfológicas das glândulas endócrinas tireóide e adrenais na evolução da Distrofia Muscular do cão Golden Retriever? / Are there hormonal interferences and morphological changes in thyroid and adrenal endocrine glands in Golden Retriever Muscular Dystrophy?
As doenças neuromusculares são um grupo heterogêneo de doenças genéticas, causadas por mutações nos genes codificando proteínas musculares sarcolemicas, sarcoméricas, e citosolicas. A Distrofia Muscular de Duchenne (DMD) é uma miopatia degenerativa progressiva, caracterizada pela ausência da proteína distrofina na superfície da membrana da célu
Publicado em: 2010
-
19. Non genomic actions of triiodothyronine (T3) on the expression polyadenylation and distribution of TSH granules in thyrotrophs of hypothyroid rats / Ações não genômicas da triiodotironina (T3) sobre a expressão, poliadenilação e distribuição dos grânulos de TSH nos tireotrofos de ratos hipotireiodeos
The thyroid-stimulating hormone (TSH) is the main regulator of the synthesis and secretion of thyroid hormones (TH), which exert a negative feedback mechanism in the pituitary by reducing the synthesis of β and α (CGA - Glycoprotein hormones alpha chain) chains through mechanisms that involve changes in the tra
Publicado em: 2010
-
20. Expressão estável de tireotrofina humana (r-hTSH) em células de mamífero CHO que expressam 2,6-sialiltransferase / STABLE EXPRESSION OF HUMAN THYROTROPIN (hTSH) IN MAMMALIAN CELLS (CHO) EXPRESSING 2,6 SIALYLTRANSFERASE
Uma linhagem celular de CHO, previamente modificada geneticamente pela introdução de cDNA da 2,6 sialiltransferase de rato, gerou, pela primeira vez, um hTSH recombinante com sialilação humanizada (hlsr-hTSH), mais similar ao hormônio nativo, com 61% de ligação de ácido siálico na conformação 2,3 e 39%, na conformação 2,6. O clone mais produtivo
Publicado em: 2009
-
21. Biphasic modulation of insulin receptor substrate-1 during goitrogenesis
Insulin receptor substrate-1 (IRS-1) is the main intracellular substrate for both insulin and insulin-like growth factor I (IGF-I) receptors and is critical for cell mitogenesis. Thyrotropin is able to induce thyroid cell proliferation through the cyclic AMP intracellular cascade; however, the presence of either insulin or IGF-I is required for the mitogenic
Brazilian Journal of Medical and Biological Research. Publicado em: 22/03/2007
-
22. The rattlesnake Crotalus durissus terrificus (Viperidae: Crotalinae) as an experimental model to study the involvement of peptidases in the survival of spermatozoids / A cascavel Crotalus durissus terrificus (Viperidae: Crotalinae) como modelo experimental para o estudo do envolvimento de peptidases na sobrevida de espermatozóides
In the rattlesnake Crotalus durissus terrificus occurs the long-term sperm storage (LTSS), in the female tract, during the interval between mating (autumn) and ovulation (spring). Peptides and peptidases are among the main components that influence the spermatic activity in mammals. The present study aimed to characterize the presence of peptidases in C. d.
Publicado em: 2007
-
23. Oral triiodothyronine for the prevention of thyroid hormone reduction in adult valvular cardiac surgery
Treatment of non-thyroidal illness by intravenous triiodothyronine (T3) after cardiac surgery causes a disproportional elevation of hormone levels. The administration of oral T3, which has never been studied in this context, could cause physiological hormone levels. The aim of this study was to test oral T3 for the prevention of T3 reduction during the posto
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-07
-
24. PAX8 and rTSH genes involvement in congenital hypothyrodism in patients with thyroid dysgenesis / "Avaliação do envolvimento dos genes PAX8 e rTSH no hipotireoidismo congênito em pacientes com disgenesia tireoidiana"
Estudamos 32 crianças com HC devido à agenesia ou ectopia tireoideana para mutações no PAX8 e 30 crianças com hipoplasia da tireóide para mutações no rTSH. Todos os exons de ambos os genes foram amplificados a partir do DNA genômico, seguido por seqüenciamento direto. Encontramos, em dois pacientes com ectopia, duas alterações no gene PAX8, uma n
Publicado em: 2005