Pharmacokinetics of intravenous nitrosylcobalamin, an antitumor agent, in healthy Beagle dogs: a pilot study. Academic Article uri icon


  • BACKGROUND/AIM: Nitrosylcobalamin (NO-Cbl) is a cobalamin-based anti-tumor agent. This study evaluated the pharmacokinetic parameters of NO-Cbl following intravenous administration in dogs. MATERIALS AND METHODS: Four dogs received 10 mg/kg, 20 mg/kg and 40 mg/kg intravenous bolus doses of NO-Cbl, with a 14-day washout period between doses. Blood samples were collected at baseline and post-dosing, and noncompartmental pharmacokinetic parameters were determined. RESULTS: Average peak serum concentrations of 2265, 5523 and 13,866 pg/mL were achieved following single-dose bolus intravenous administration of 10 mg/kg, 20 mg/kg and 40 mg/kg of NO-Cbl respectively. The average area under the curve was 12,697 h pg/mL, 24,497 h pg/mL and 44,976 h pg/mL respectively, with an average elimination half-life of 16.2 h, 13.5 h and 13.1 h respectively. CONCLUSION: These results can be used to determine the dose and dosing intervals for clinical trials evaluating NO-Cbl in humans and companion animals.

published proceedings

  • Anticancer Res

author list (cited authors)

  • Sysel, A. M., Horne, W. I., Steiner, J. M., Suchodolski, J. S., & Bauer, J. A.

citation count

  • 1

complete list of authors

  • Sysel, Annette M||Horne, Walter I||Steiner, Jörg M||Suchodolski, Jan S||Bauer, Joseph A

publication date

  • September 2012