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  • Title: [Comparison of the effect of trypsin and chymotrypsin on the pharmacokinetics of penicillins in the body of rats].
    Author: Geĭtman IIa, Butylina LV, Kivman GIa.
    Journal: Antibiotiki; 1975 Nov; 20(11):1019-23. PubMed ID: 1225167.
    Abstract:
    Trypsin and chemotrypsin administered intramuscularly to rats in doses of 2 and 10 mg/kg respectively prior to benzylpenicillin, ampicillin or oxacillin administered also intramuscularly were studied with respect to their effect on the pharmacokinetics of the antibiotics. The latter 2 antibiotics were additionally studied after their oral administration. It was found that trypsin and chemotrypsin had almost the same effect on the pharmacokinetics of the penicillins in the animals, when administered intramuscularly and the effect did not depend on the doses of trypsin and chemotrypsin (2 and 10 mg/kg). No significant differences in the effect of the enzymes on the pharmacokinetics of ampicillin and oxacillin administered orally was registered. Combination of prior injection of every of the enzymes followed by oral administration of the semisynthetic penicillins resulted in a more pronounced increase in the levels of the antibiotics in the blood serum and organs of the rats as compared to that after intramuscular administration of the antibiotics.
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