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Prüfung der biologischen Aktivität halbsynthetischer Insuline

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Zusammenfassung

Es wurde die biologische Aktivität von zwei halbsynthetischen Insulinpräparaten (Zahn u. Mitarb.) anhand der Messung des Gasaustausches von epididymalem Rattenfettgewebe bei Inkubation in Glucose-Bicarbonatpuffer getestet.

Schafinsulin aus natürlicher A-Kette und synthetischer B-Kette erwies sich als hochaktiv; die biologische Wirkung ließ sich noch in einer Konzentration von 4×10−7 mg/ml signifikant nachweisen. Im Vergleich zu natürlichem Schafinsulin zeigte das halbsynthetische Präparat eine Aktivität von 1%.

Schafinsulin aus synthetischer A-Kette und natürlicher B-Kette ließ sich nur orientierend prüfen, da es nicht vollständig löslich war. Bei einer Einwaage von 4×10−4 mg/ml erwies sich die gelöste Fraktion als stark wirksam. Im Vergleich zu natürlichem Schafinsulin betrug die biologische Aktivität des gelösten Anteils etwa 0,1%.

Summary

The biological activity of two hybrid-insulins with synthetic A or B chain prepared byZahn and co-workers was measured by gas-exchange of epididymal fat tissue.

Sheep insulin with natural A chain and synthetic B chain showed high biological activity. There was increased gas-exchange still in the concentration of 4×10−7 mg/ml. In comparison with natural sheep insulin the efficiency amounted to a degree of 1%.

The preparation with synthetic A chain and natural B chain was not completely soluble. The soluble fraction showed high activity in a concentration of 4×10−4 mg/ml referred to the amount weighed. The effect of the soluble part was in the range of 0.1% compared with natural sheep insulin.

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Otto, H., Pohlmeyer, U. Prüfung der biologischen Aktivität halbsynthetischer Insuline. Klin Wochenschr 43, 532–535 (1965). https://doi.org/10.1007/BF01485115

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