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Digitale Medien

Disposition in mice of 7-hydroxystaurosporine, a protein kinase inhibitor with antitumor activity (1994)

Hill, Donald L. ; Tillery, Kathleen F. ; Rose, Lucy M. ; [weitere]

Springer

Cancer chemotherapy and pharmacology 35 (1994), S. 89-92

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ISSN: 1432-0843

Schlagwort(e): Disposition ; 7-Hydroxystaurosporine ; Protein kinase

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract UCN-01, a hydroxylated derivative of staurosporine, was selected for study because of its promising antitumor activity. For mice dosed intravenously, subcutaneously, or by oral gavage with this compound, the maximum tolerated doses (MTD) were 20, 10, and 〉100 mg/kg, respectively. UCN-01 was stable in mouse and dog plasma, but in human plasma it was converted to a metabolite in a process not inhibited by standard protease and esterase inhibitors. Following n intravenous dose of 10 mg/kg UCN-01, the half-lives for the initial (t 1/2α) and terminal (t 1/2β) exponential phases of elimination were 10 and 85 min, respectively; the area under the plasma concentration-time curve (AUC value) was 117 μg min ml−1. In mice dosed by oral gavage with 10 mg/kg, the calculated value for the half-life of the elimination phase was 150 min. The AUC value was 15 μg min ml−1, giving a value for bioavailability of 13%. After subcutaneous dosing with 10 mg/kg, the calculated values for half-lives for the distribution and elimination phases were 23 and 130 min, respectively; the AUC value was 113 μg min ml−1. Since this value is equivalent to that obtained for intravenous dosing, administration of UCN-01 by the subcutaneous route may be an alternative to intravenous dosing in preclinical and clinical trials.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00686290

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