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Showing 1 to 20 of 88 for “"thyroid hormones"”.
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Maternal thyroid hormones in Japanese quail eggs
Thyroid hormone content in eggs varies with the thyroid status of the hen and may influence embryonic development prior to the release of appreciable amounts of thyroid hormones by the embryonic thyroid gland. Methods for the measurement of thyroid hormones in egg yolk were verified by …
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Stimulation of adenylosuccinate synthetase by thyroid hormones
The effect of thyroid hormones on purine biosynthesis was studied in vitro. With 100,000 x g supernatant fraction of rat liver homogenate, the results suggested that thyroid hormones stimulated total purine synthesis from labeled glycine-1-¹⁴C. Further studies indicated that these hormones …
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The response of rat thymus nuclei to thyroid hormones
… affected by L-T₃. These results demonstrate that thyroid hormones modify the chromatin in such a way that the template efficiency is increased. An hypothesis for the mechanism of thyroid hormone action was presented.
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Studies on the mechanism of action of thyroid hormones
Inosine monophosphate (IMP) is a precursor of the two purine nucleotides, adenosine monophosphate (AMP) and guanosine monophosphate (GMP)e through DEAE-Scphacex, and the reaction IMP~ XMP is catalyzed by: IMP dehydrogenase which was purified in a manner similar to adenylosuccinate synthetase. …
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Some Physiological Effects of Acth, Tsh, and Thyroid Hormones in Goldfish
Made available in DSpace on 2015-05-12T17:03:39Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6303281.PDF: 4528587 bytes, checksum: 760f5bf17b7ade134f2b84bb54319008 (MD5) Previous issue date: 1962
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Tissue Localization of Radioactive Iodine Labeled Thyroid Hormones by Autoradiographic Analysis
Made available in DSpace on 2014-12-09T22:30:12Z (GMT). No. of bitstreams: 1 6706700.pdf: 4437171 bytes, checksum: 5170b034e0cbed0edbc2cf76e29c3051 (MD5) Previous issue date: 1966
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Developmental influences of thyroid hormones on the rat olfactory receptor sheet
… much is known about the regulatory role of thyroid hormones on brain development, little is known about the effects of thyroid hormones on the development of the peripheral nervous system. The major aim of this thesis therefore, is to examine the role of thyroid hormones on the postnatal …
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The Relationship Between Thyroid Hormones and Essential minerals by Hair Mineral Analysis.
BACKGROUND: Thyroid disease is a common entity, for which a serological diagnosis is made at the present. A serological test is useful in making a diagnosis of thyroid disease in cases in which a disease is present, although it reveals the limitations in those in which only the symptoms are …
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Thyroid hormones and breast cancer-prospective studies on incidence, mortality and prognostic factors
Thyroid hormones and breast cancer-prospective studies on incidence, mortality and prognostic factors The aim of this thesis was to investigate in a prospective design, thyroid hormones in relation to breast cancer risk, mortality and prognostic factors. The association between total …
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Some effects of thyroid hormones on renal and hepatic ultrastructure in the mouse
The effects of thyroid hormones upon cellular ultratructure have been investigated in both mouse liver and kidney. The tissues were examined after various preparation procedures, and as well as subjective visual examination of infrastructure, attempts were made where possible to gain quantitative …
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An in vitro system for studying the mechanism of action of thyroid hormones
The effect of thyroid hormones on nuclear RNA synthesis was studied in vitro. Results indicated that thyroid hormones added to cell-free rat liver homogenates, in the presence of IMP as a precursor of purine nucleotides and necessary substrates, stimulated orotic acid-6-¹⁴C incorporation into …
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Thyroid Hormones and the Onset of Hibernation in the 13-Lined Ground Squirrel, Spermophilus Tridecemlineatus
… studies with more conflicting results than the thyroid gland. In most species, the thyroid gradually becomes less active throughout late spring and summer, and virtually ceases activity by the time the animal initiates hibernation. If a reduction in thyroid hormones is a physiological cue or …
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The effect of thyroid hormones an growth and metabolism of two species of teleost fish
Both short term and long term effects of thyroid hormones on growth and protein metabolism were studied in tilapia and carp. The hormones were either fed or injected intraperitoneally. Only T3 was able to induce growth in tilapia. No effect on carp growth was observed. Certain biochemical changes …
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Thyroid hormones and their receptor gene expression as biomarkers of endocrine disruption in harbour seals (Phoca vitulina)
… whether current levels of POP are affecting thyroid hormone physiology of free-ranging harbour seals (Phoca vitulina) in British Columbia (BC), Canada and Washington State (WA), U.S.A. TH functions mainly by binding to nuclear thyroid hormone receptors (TRs) in target tissues and modulating …
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The role of thyroid hormones in placental development and the importance of the thyroid hormone transporter MCT8
Thyroid hormones (THs) are important for fetoplacental development. Human intrauterine growth restriction (IUGR) is associated with malplacentation and reduced fetal circulating concentration of THs. The expression of the plasma membrane TH transporters MCT8, MCT10, LAT1, LAT2, OATP1A2 and OATP4A1 …
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THE EFFECT OF THYROID HORMONES ON THE FORCE OF CONTRACTION OF LEFT ATRIA OF GUINEA-PIGS IN UITRO
Alterations in developed contractile force over a wide range of frequencies of electrical stimulation (0.1 to 6 Hz) were investigated in guinea-pig isolated left atria from animals pretreated for varying lengths of time with L-thyroxine or carbimazole. The guinea-pigs were pretreated with either …
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