Human Pituitary Hormones

Circadian and episodic variations
Herausgegeben:Cauter, E. van; Copinschi, G.

• Broschiertes Buch

Produktbeschreibung

During the last decade, circadian and episodic fluctuations of the plasma levels of pituitary hormones have been demon~ trated in man. The interest in the time dependence of the pituitary secretions partially originates from their close functional relation with the neuroendocrine mechanisms pre sumably responsible for the control of the circadian.rhyth micity in man. High frequency blood sampling techniques and specific radio immunoassays have allowed to describe in detail the varia tions over the 24-h cycle of the hormonal concentrations in healthy individuals under basal conditions as well as after manipulation of external synchronizers such as the sleep wake cycle, the dark-light cycle and the feeding schedule. Alterations in normal hormonal var~ions have been sugges ted to play a role in the etiopathogeny of several metabo lic and mental diseases, such as obesity or manic-depressio~ Important clinical implications regarding treatment and pre vention are expected to be developed in the near future. However, so far, data obtained in different groups are dif ficult to compare because different hormones were studied using different protocols and statistical methods. As a result, unclear or controversial issues are not uncommon.

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Produktdetails

• Developments in Endocrinology 1
• Verlag: Springer / Springer Netherlands
• Artikelnr. des Verlages: 978-94-009-8284-0
• Softcover reprint of the original 1st ed. 1981
• Seitenzahl: 368
• Erscheinungstermin: 13. Oktober 2011
• Englisch
• Abmessung: 235mm x 155mm x 20mm
• Gewicht: 557g
• ISBN-13: 9789400982840
• ISBN-10: 9400982844
• Artikelnr.: 39503547

Inhaltsangabe

1. Quantitative methods for the analysis of circadian and episodic hormone fluctuations.- Discussion.- 2. The sleep-wake pattern of cortisol and growth hormone secretion during non-entrained (free running) conditions in man.- 3. Search for a primate model of human sleep-related hormone secretion.- Discussion.- 4. Adaptation of 24-hour hormonal patterns and sleep to jet lag.- Discussion.- 5. Effect of an imposed 21-hour sleep-wake cycle upon the rhythmicity of human plasma thyrotropin.- Discussion.- 6. Physiological factors influencing the nyctohemeral pattern of TSH.- 7. Circadian and ultradian variations in serum TSH and thyroid hormones in normal man and in patients with treated and untreated primary hypothyroidism.- Discussion.- 8. Control of pituitary-adrenal periodicity.- Discussion.- 9. Influence of drug administration on ACTH circadian rhytm.- Discussion.- 10. Hormonal rhythms in pituitary tumors.- Discussion.- 11. Circadian variation of plasma growth hormone in normal subjects and diabetic patients. Effects of somatostatin infusion, age and body weight.- Discussion.- 12. Circadian and circannual changes of pituitary and other hormones in healthy human males: their relationship with gonadal activity.- Discussion.- 13. Clinical implications of gonadotropin rhythms.- Discussion.- 14. Pituitary and pineal hormone rhythms in manic depression.- Discussion.- 15. Circadian rhythm of plasma gonadotropins, prolactin and growth hormone levels in anorexia nervosa: Correlations with hypophysial tests.- Discussion.- General Discussion.- List of participants.