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  • Digitale Medien  (5)
  • insulin  (3)
  • High-performance liquid chromatography  (2)
  • 1
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Regulatory Peptides 5 (1983), S. 263-272 
    ISSN: 0167-0115
    Schlagwort(e): arginine ; fat ; glucagon ; glucose ; insulin
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 0009-8981
    Schlagwort(e): Acid ceramidase ; Cultured fibroblast ; Farber's disease ; High-performance liquid chromatography ; Sphingosine
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Diabetologia 27 (1984), S. 460-463 
    ISSN: 1432-0428
    Schlagwort(e): Non-obese diabetic mice ; pancreas ; stomach ; insulin ; glucagon ; intestine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary To investigate the rôle of glucagon in the development of diabetes mellitus, spontaneously diabetic non-obese mice were studied before (group 1) and after the onset of diabetes mellitus (group 2). In group 1, fasting blood glucose and insulin in plasma and pancreas did not differ significantly, while plasma glucagon was elevated (48.9±10.4 versus control 18.6±6.0pmol/l). In group 2, the insulin content of plasma and the pancreas were markedly reduced, whereas plasma glucagon was elevated (180.9±59.1 pmol/l). When diabetic mice were treated with insulin for 4 weeks (group 3), plasma glucagon was markedly reduced compared with that of group 2 (30.3±9.0 pmol/l). In group 1, glucagon and glucagon-like immunoreactivity of the intestine were reduced. The glucagon content of the intestine was elevated in group 2. Group 3 elicited increased contents of gastric glucagon as well as intestinal glucagon-like immunoreactivity. We conclude that, in addition to insulin deficiency, hypersecretion of glucagon might contribute to the development and clinical course of diabetes mellitus in the non-obese diabetic mouse.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Diabetologia 29 (1986), S. 397-401 
    ISSN: 1432-0428
    Schlagwort(e): GLI ; glicentin-related peptide ; glucagon ; insulin ; dog pancreas
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Recent studies have demonstrated that glicentin is released during nutrient ingestion. However, the biological function of glicentin remains unclear. In order to clarify the role of glicentin in the enteroinsular axis, the effect of glicentin-related peptides was investigated using in vivo local circulation of canine pancreas. Peaks I and II of gut glucagon-like immunoreactivity, partially purified from porcine intestinal extract by affinity chromatography and gel filtration, synthesized hexadecapeptide of N-terminal glicentin (1–16) and synthesized octapeptide of C-terminal glicentin (62–69) were administered for 10 min into the pancreaticoduodenal artery of canine pancreas. Blood samples were then drawn from the pancreaticoduodenal vein. The administration of peak I of glucagon-like immunoreactivity during arginine infusion in a dosage of 20 ng reduced the glucagon secretion by 42 pmol/1 (p〈0.05), whereas peak 11 of glucagon-like immunoreactivity (20 ng) slightly increased the plasma level of insulin, although not significantly. The administration of glicentin (1–16) in a dosage of 400 ng during saline infusion did not alter the plasma insulin level, but reduced the plasma glucagon level in the pancreaticoduodenal vein by 29 pmol/1 (p〈0.05). In addition, glicentin [62–691 in a dosage of 400 ng exerted a decrease in both the plasma insulin (40 mU/1,p〈0.05) and glucagon level (27 pmol/l,p〈0.05). The present study demonstrates the suppression of pancreatic glucagon release during the infusion of peak I glucagon-like immunoreactivity and N- or C-terminal glicentin-related peptide. Therefore, it is suggested that glicentin released during nutrient intake might inhibit the secretion of glucagon.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    ISSN: 1432-1459
    Schlagwort(e): Adrenoleukodystrophy ; Adrenomyeloneuropathy ; Fatty acids ; High-performance liquid chromatography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Mittels Hochleistungs-Flüssigkeitschromatographie wurden durch Analyse der Fettsäuren in Sphingomyelien Adrenoleukodystrophien und Adrenomyeloneuropathien untersucht. Die oben erwähnte analytische Methode erwies sich als einfach, empfindlich und exakt. Bei der Adrenoleukodystrophie und bei Patienten mit Adrenomyeloneuropathie wurden sehr lange Fettsäureketten (C26:0, C25:0 und C24:0 auf der Basis von C22:0) sowohl in Plasma und den Erythrozytenmembranen als auch in Gesamtblutproben als vermehrt erkannt. Auch in Kulturen von Hautfibroblasten von Sphingomyelien wurde eine Zunahme der langkettigen Fettsäuren nachgewiesen. In einem Fall eines heterozygoten Adrenoleukodystrophiepatienten wurden Werte die zwischen jenen der homozygoten und der Kontrollfälle lagen gefunden. Somit ist die Hochleistungs-Flüssigkeitschromatographie eine brauchbare Methode, um eine Zunahme langkettiger Fettsäuren zwecks Diagnose einer Adrenoleukodystrophie oder einer Adrenomyeloneuropathie festzustellen.
    Notizen: Summary Using high-performance liquid chromatography, adrenoleukodystrophy (ALD) and adrenomyeloneuropathy (AMN) were diagnosed by the analysis of fatty acids in sphingomyelin. The analytical method was simple, sensitive and accurate. In ALD and AMN patients, very long chain fatty acids (C26:0, C25:0 and C24:0 on the base of C22:0) were elevated not only in plasma and erythrocyte membranes but also in whole blood samples. An increase of long chain fatty acids was also shown in sphingomyelin of cultured skin fibroblasts. One heterozygote for ALD showed intermediate values between homozygotes and controls. Thus, high-performance liquid chromatography is a valuable method to detect increased long chain fatty acids for the diagnosis of ALD or AMN.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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