Summary
The subcutaneous injection of 5 mg of zincprotamine-glucagon results in a 40% increase of blood glucose within 1 hour; this elevated level is maintained for several hours. The activation of lipase after the administration of glucagon in patients is insignificant and of short duration (only 7% rise of plasma FFA 10 minutes after injection) and is followed by an insulin-induced fall of plasma FFA by 50% within 6 hours. There is a concomitant, statistically significant rise in serum insulin.
Haemodynamic measurements following a single dose of 5 mg of zinc-protamine-glucagon revealed only a statistically non significant 16.7% rise in LVdp/dt max, after 15 minutes, the other parameters remaining essentially unchanged.
The possible elinical significance of these glucagon effects is discussed.
Zusammenfassung
Zink-Protamin-Glucagon zeigt bei s.c.-Injektion in einer Dosis von 5 mg einen deutlichen, aber protrahierten Anstieg des Blutzuckers um rund 40% innerhalb 1 Std und behält dieses erhöhte Niveau durch mehrere Stunden bei. Die Lipase-Aktivitätssteigerung nach Glucagon ist beim Menschen nur kurzfristig und unbedeutend [rund 7% ige Zunahme der freien Fettsäuren (FFS) 10 min p. inj.], sie wird von einem insulininduzierten Abfall der FFS um rund 50% im Laufe von 6 Std gefolgt. Die Zunahme der Insulinspiegel im Serum ist zwar statistisch signifikant, erreicht aber nicht das Ausmaß der von der intravenösen Verabreichung bekannten Veränderungen.
Die hämodynamischen Effekte einer Einzeldosis von 5 mg Zink-Protamin-Glucagon sind nicht eindeutig und lassen lediglich eine nicht signifikante Zunahme von LVdp/dt max um 16,7% nach 15 min erkennen, während alle anderen Parameter im wesentlichen unverändert bleiben.
Die mögliche klinische Bedeutung dieser Glucagoneffekte wird diskutiert.
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Kühn, P., Holzhey, P., Niederberger, M. et al. Biochemische und hämodynamische Effekte von Zink-Protamin-Glucagon am Menschen. Klin Wochenschr 51, 951–956 (1973). https://doi.org/10.1007/BF01468250
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DOI: https://doi.org/10.1007/BF01468250