Procarbazine HCl (Synonyms: Indicarb, Natulan, NSC 77213)

Cell experiment:

Following Procarbazine or metabolite treatment, cells are diluted to 50.000/mL in 25-cm2 culture flasks (10 mL). Every 24 h, a 0.5-mL aliquot is removed, diluted 20-fold in Hematall isotonic diluent, and the cell number determined with a Coulter Model F electronic cell counter. Counts greater than 10,000/0.5 mL are corrected for coincidence. Cells are diluted in fresh culture media when cell density exceeded 1 × 106/mL. Cultures are maintained until the aggregate cell number approached 100 × 106/mL and doubling time has returned to 12 h. Cell survival is determined using Equation A, where TD(doubling time for cells of interest) is 12 h[1].

Animal experiment:

Mice[2]Male MutaTM Mouse animals (7-8 weeks old) are used after 2 weeks of acclimation. In the first experiment, 18 mice are injected intraperitoneally (i.p.) with 50 mg/kg Procarbazine hydrochloride in 10 mL saline/kg and eight mice are injected with 10 mL saline/kg as the vehicle control. Six treated mice are killed 7, 14, and 28 days after treatment, and four control mice are killed 7 and 28 days after the treatment. Killing is by cervical dislocation[2].

References:

[1]. Erikson JM, et al. Cytotoxicity and DNA damage caused by the azoxy metabolites of procarbazine in L1210 tumor cells. Cancer Res. 1989 Jan 1;49(1):127-33.
[2]. Suzuki T, et al. Procarbazine genotoxicity in the MutaMouse; strong clastogenicity and organ-specific induction of lacZ mutations. Mutat Res. 1999 Aug 18;444(2):269-81.
[3]. Weissenberg R, et al. Procarbazine effects on spermatogenesis in golden hamster: a flow cytometric evaluation. Arch Androl. 2002 Mar-Apr;48(2):91-100.