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    v. 1-8, [9], 1953-61, [1962].
    5
  • Article
    Baker H, Sidorowicz A, Sehgal SN, Vézina C.
    J Antibiot (Tokyo). 1978 Jun;31(6):539-45.
    The activity of rapamycin, a new anti-Candida antibiotic, was not affected by pH values between 6 and 8; at pH 4, however, activity was abolished. The MIC of rapamycin did not vary drastically with the size of inoculum: a ten-fold dilution of the inoculum reduced the MIC only two-fold. Serum binding was extensive. Serum levels obtained in mice were higher on subcutaneous injection than with oral administration. Dogs absorbed rapamycin after oral administration. Rapamycin cured systemic candidosis in mice: PD50 s.c. was 9.5 mg/kg: PD50 p.o. was 11 mg/kg. In the same experimental infections amphotericin B and nystatin exhibited PD50 values of less than 0.25 mg and greater than 4,000 units/kg respectively. Rapamycin and amphotericin B, administered at 1, 4 and 24 hours after infection, gave approximately the same percent survival after 30 days of observation. When the above treatment was extended by an additional daily treatment for 6 days, rapamycin by the subcutaneous route yielded a higher percentage of survival than either rapamycin or amphotericin B, administered orally, after a 30-day observation period. Vaginal candidosis in female rats was treated efficiently (91% cure) by rapamycin administered orally. No increase of resistance of C. albicans was observed during treatment.
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