[Use of DNA in cytopenia induced by myelosan]

Wistar rats weighing 180-190 g received myleran per os in a single dose of 10 mg/kg, or fractionally (total dose of 25 mg/kg) for 18 days. After myleran administration the animals were injected 4-5 times (every other day) with a homologous DNA in a dose of 2 mg per rat or with a standard salt citrate. The DNA injection reduced the duration of leukopenia. With the least dose of myleran leukocyte count returned to the normal in 6 days in the treated animals and in 25 days in the untreated controls and with the highest dose -- in 15 and in 25 days, respectively, from the beginning of the treatment. The differences in the leukocyte count between the treated and control rats in both experiments were mainly due to the dynamics of neutrophils, the content of which in the treated animals exceeded that in the untreated animals by 54-110% in the course of 6-15 days in the first, and by 23-38% in the course of 10-23 days in the second experiment.