Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für Rheumatologie 57 (1998), S. S72 
    ISSN: 0340-1855
    Keywords: Key words Fibromyalgia ; growth hormone ; IGF-1 ; somatostatin ; GH deficiency ; GH treatment ; Schlüsselwörter Fibromyalgie ; Wachstumshormone ; IGF-1-Somatostatin ; GH-Mangel ; GH-Behandlung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Eine reduzierte Produktion von Wachtumshormonen (GH) wird bei 30% der Fibromyalgie-Patienten beobachtet. Die Behandlung dieser Fibromyalgie-Patienten mit rekombiniertem Wachstumshormon verbessert verschiedene klinische Symptome einschließlich der Zahl der Hauptschmerzpunkte. Die reduzierte GH-Sekretion dürfte durch einen erhöhten Tonus der Somatostatin-Freisetzung im Hypothalamus bedingt sein. Es wird die Hypothese vorgestellt, daß diese gestörte GH-Sekretion verursacht wird durch intermittierende Phasen erhöhter Cortisolspiegel, die wiederum die Dichte der β-adrenergen Rezeptoren im Hypothalamus erhöhen. Die daraus resultierende Erhöhung des β-adrenerrgen Tonus stimuliert die Freisetzung von Somatostatin mit der Folge der reduzierten GH-Sekretion.
    Notes: Summary Growth hormone (GH) deficiency occurs in about 30% of fibromyalgia patients. Treatment of GH deficient fibromyalgia patients with recombinant growth hormone improves several clinical features, including the tender point count. Defective GH secretion in these patients appears to be due to increased somatostatin tone in the hypothalamus. An hypothesis is presented which relates dysfunctional GH secretion to the effects of intermittent hypercortisolemia on upregulating the density of β-adrenergic receptors in the hypothalamus. The resulting augmentation of β-adrenergic tone stimulates the release of somatostatin, thus, impairing GH secretion.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 14 (1976), S. 3021-3026 
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The present series of papers is the commencement of a study aimed at the direct detection and quantification of crosslinking in hydrocarbons with the ultimate objective of a precise study of radiation-induced crosslinking in polyethylene. The subject of the present paper is the synthesis of a model compound containing a crosslink in a well-defined position sufficiently remote from the chain ends to be representative of an average crosslink in polyethylene. Such a compound in the form of 1,1,2,2-tetra(tridecyl) ethane has been synthetized and isolated in pure form in the course of the present work. Melting points and x-ray spacings of the new compound have been determined, and a comparison with the corresponding linear paraffins has been made. Effects are noted relating to the influence of molecular shape on the GPC elution volume, in which context an observation on a cyclic paraffin is also quoted.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 14 (1976), S. 3027-3033 
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A 13C-NMR investigation was carried out in aid of direct detection of crosslinks in hydrocarbons with the future objective of studying radiation-induced crosslinking in polyethylene by a direct method. The resonance signal due to a tertiary carbon atom appropriate to a crosslink far remote from molecular ends has been identified in a definitive manner with the aid of the H-shaped model compound 1,1,2,2-tetra(tridecyl)ethane synthetized in Part I of this study. This identification was then put to use in the examination of the irradiated linear paraffins n-hexadecane and n-eicosane, where it enabled the detection of radiation-induced crosslinks. This crosslinking could then be associated with corresponding changes in molecular weight (dimer, trimer formation) as revealed by discrete peaks in the gel-permeation chromatograms of the same samples and randomness of the crosslinking process in the liquid state of these compounds being inferred.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...