CLINICAL IMPLICATIONS OF BIOCHEMICAL ALTERATIONS INDUCED BY HYPOTHALAMIC THYROTROPHIN HORMONE IN ELDERLY PEOPLE

Summary: Thyrotrophin releasing hormone (TRH) test has been done in 62 subjects (females, average age 72), in order to analyse the stimulated TSH action, to assess the immediate thyroid reserve and to make the rational parameters of the thyroid function in the elderly. It was concluded that biochemical alterations provoked by application of hypothalamic thyrothropin hormone are very complex, but important for the clinical practise, giving the possibility of assessment of the actual state of the thyroid's function. It is also concluded that the estimation of TRH stimulated TSH in 20th and 60th minute, and T3 and FT4 in 60th minute of the TRH test provides very solid and rational method of thyroid function estimation, as well as the estimation of the thyroid reserve.

[1]  E. Isenovic,et al.  Age-related changes of TSH receptors in thyroid tissues obtained from euthyroid patients. , 1993, Archives of gerontology and geriatrics.

[2]  H. Freake Molecular biological approaches to studying trace minerals: why should clinicians care? , 1993, Journal of the American College of Nutrition.

[3]  B. Roos,et al.  The thyrotrophin-releasing hormone (TRH)-like peptides in rat prostate are not formed by expression of the TRH gene but are suppressed by thyroid hormone. , 1992, The Journal of endocrinology.

[4]  A. Aitken,et al.  Pyroglutamylglutamylprolineamide is present in rat anterior and posterior pituitary gland. , 1991, The Journal of endocrinology.

[5]  E. Iversen Pharmacokinetics of thyrotrophin-releasing hormone in patients in different thyroid states. , 1991, The Journal of endocrinology.

[6]  I. Szabolcs,et al.  Thyrotropin-releasing hormone in geriatric patients: intravenous versus intranasal application. , 1989, Acta endocrinologica.

[7]  H. Feit Thyroid function in the elderly. , 1988, Clinics in geriatric medicine.

[8]  R. Kolesnick,et al.  Thyrotropin-releasing hormone and the pituitary. New insights into the mechanism of stimulated secretion and clinical usage. , 1985, The American journal of medicine.

[9]  P A Getting,et al.  Thyrotropin-releasing hormone induces rhythmic bursting in neurons of the nucleus tractus solitarius. , 1985, Science.

[10]  M. Gershengorn,et al.  Thyrotropin-releasing hormone (TRH) stimulates biphasic elevation of cytoplasmic free calcium in GH3 cells. Further evidence that TRH mobilizes cellular and extracellular Ca2+. , 1985, Endocrinology.

[11]  T. Nogimori,et al.  Changes in plasma thyrotrophin-releasing hormone, thyrotrophin, prolactin and thyroid hormone levels after intravenous, intranasal or rectal administration of synthetic thyrotrophin-releasing hormone in man. , 1984, Acta endocrinologica.

[12]  P. Albert,et al.  Thyrotropin-releasing Hormone-induced Spike and Plateau in Cytosolic Free Ca2+ Concentrations in Pituitary Cells , 1984 .

[13]  S. Leu,et al.  Effects of TSH, TRH, LH and LHRH on thermoregulation and food and water intake in the rat. , 1983, Neuroendocrinology.

[14]  C. Prasad,et al.  The postnatal development of the pituitary thyrotropin-releasing hormone receptor in male and female rats. , 1982, Endocrinology.

[15]  M. Mori,et al.  Regional dissociation of histidyl-proline diketopiperazine (cyclo-(His-Pro)) and thyrotropin-releasing hormone (TRH) in the rat brain , 1982, Brain Research.

[16]  B. L. Tsay,et al.  Effects of intracerebroventricular administration of thyrotrophic-releasing hormone on cardiovascular function in the rat. , 1982, Neuroendocrinology.

[17]  M. Gold,et al.  The TRH test in the diagnosis of major and minor depression , 1981, Psychoneuroendocrinology.

[18]  J. Morley,et al.  Histidyl-proline diketopiperazine decreases food intake in rats , 1981, Brain Research.

[19]  A. Peterkofsky,et al.  The subcellular and organ distribution and natural form of histidyl-proline diketopiperazine in rat brain determined by a specific radioimmunoassay. , 1980, The Journal of biological chemistry.

[20]  G. Snyder,et al.  Pituitary cyclic nucleotides and thyrotropin-releasing hormone action: the relationship of adenosine 3',5'-monophosphate and guanosine 3',5'-monophosphate to the release of thyrotropin and prolactin. , 1980, Endocrinology.

[21]  J. Dixon,et al.  Purification and characterization of a thyrotropin-releasing hormone deamidase from rat brain. , 1979, Biochemistry.

[22]  J. Drouin,et al.  Polypeptide Receptor Mechanisms in Anterior Pituitary Gland , 1975 .

[23]  A. Kastin,et al.  Hypothalamic Regulatory Hormones , 1973, Science.

[24]  R. Guillemin,et al.  IN VITRO SECRETION OF THYROTROPIN (TSH): STIMULATION BY A HYPOTHALAMIC PEPTIDE (TRF). , 1963, Endocrinology.