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Showing 1 to 20 of 1120 for “"Hormones"”.
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The Imipramine Binding Site: Effects of Aging, Ovarian Hormones, Adrenal Hormones, and Chronic Antidepressant Treatment
Binding sites for the antidepressant imipramine have been described in the brain and blood platelets of several species of animals, including rats and humans. Decreased levels of imipramine binding sites are found in depressed patients when compared to controls.
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Enzyme activities associated with gonadotropic hormones
A structural relationship between gonadotropic hormones and certain types of enzymes has been suggested in previous studies and an investigation into the possibility of enzymatic activity associated with the gonadotropic hormones has been the primary focus of the research presented in this thesis. …
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Hormones and behaviour during the menstrual cycle
The research described in this thesis aimed to investigate emotional and sexual variations experienced by women during the Menstrual Cycle including the phenomenon of "Premenstrual Tension ", and relate such changes to the sex steroids, Oestradiol, Progesterone and Androgens.
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Maternal thyroid hormones in Japanese quail eggs
… 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 demonstrating consistency in the recovery of yolk thyroid hormones following a methanol/chloroform extraction, and in the …
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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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Douleur et analgésie : le rôle des hormones sexuelles
… évidences nous permettent de croire que les hormones sexuelles ont un important rôle à jouer dans ces différences de perception et de modulation de la douleur entre les hommes et les femmes. En effet, les seuils de douleur et la prévalence de certaines maladies varient selon le statut …
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Regulation Mechanisms of Peptide Hormones in Neuroendocrine Cancers
… for the detection and quantification of peptide hormones featuring on-line analyte concentration, post-separation tagging and HPLC-fluorescence detection were presented. These methods were used to detect and quantify calcitonin (CT) and its prohormones glycyllysyllysine-extended CT (CTGKK), …
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Regulation Mechanisms of Peptide Hormones in Neuroendocrine Cancers
… for the detection and quantification of peptide hormones featuring on-line analyte concentration, post-separation tagging and HPLC-fluorescence detection were presented. These methods were used to detect and quantify calcitonin (CT) and its prohormones glycyllysyllysine-extended CT (CTGKK), …
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Neuropeptide hormones from the eyestalks of Jasus Lalandii
… to be a source of a variety of neuropeptide hormones that regulate a number of diverse physiological processes. This neuroendocrine complex was investigated in 3 crustacean species, viz. the European shore crab Carcinus maellas, and 2 spiny lobster species Jasus lalandii and Panulirus homarus …
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The response of rat thymus nuclei to thyroid hormones
… 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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The Inactivation of Neurohypophyseal Hormones by the Toad Bladder
… prepared. Incubation of this fraction with the hormones, oxytocin, arginine vasopressin, lysine vasopressin, and oxytocin ring amide caused their inactivation. The decrease in hormone activity was roughly exponential with the time of incubation. The hormone inactivating activity of the …
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Detection and measurement of stress hormones with mass spectrometry
… rate. Saliva samples were collected at rest, and hormones measured with the new LC-MS method and ELISA to validate the developed method. Finally, heart rate and salivary and plasma cortisol and testosterone response to acute exercise were tested, to compare the response to different training …
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Hormones and Body Size *Evolution in Old World Monkeys
… differences in levels of growth regulatory hormones during development. Results also demonstrate that absolute hormone levels during growth do not necessarily relate to adult size, contrary to the findings of previous research utilizing single species. The utility of the alternate model of …
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Age Trends in Gonadotrophic and Thyrotrophic Hormones in Swine
Made available in DSpace on 2014-12-05T17:47:23Z (GMT). No. of bitstreams: 1 0011510.pdf: 3257685 bytes, checksum: db19fa04ed998a9fcd4da68f2f58bc65 (MD5) Previous issue date: 1955
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Design and synthesis of ring D modified steroidal hormones
Cycloadditions of steroidal 14,16-dienes with ketene equivalents were investigated, as routes to estradiol and estriol analogues. The cycloadduct of 3-methoxyestra-1,3,5(10), 14,16-pentaen-17-yl acetate and 2-chloroacrylonitrile underwent an unprecedented tandem rearrangement, on attempted alkaline …
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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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