[Activation of endogenous nucleases as affected by sodium arsenate and cisplatin]. / Aktivirovanie éndogennykh nukleaz pod deistviem arsenata natriia i tsisplatina.

Screening of pharmaceutical agents releasing active nucleases from inactive complexes was performed. Cisplatin and sodium arsenate were shown in vitro to have such properties. Sodium arsenate which is more expedient for the treatment of human patients was studied in vivo. It was administered to albino mice in a dose of 0.2 mg/kg once a day for 6 days. Due to the release, the activity of free serum DNAse and RNAse markedly increased (1.5-2 times). Activation of endogenic nucleases is more promising than the use of exogenic enzymes in complex therapy of viral affections and rickettsiosis.

[Q fever in the western region of Ukraine]. / Likhoradka Ku v zapadnom regione Ukrainy.

Multiple natural and mixed foci of Q fever have been revealed at the territory of six administrative regions of the western part of the Ukraine. Coxiella burnetii strains have been isolated from small animals and ticks, the specific features of their ecology in Poles'e and forest-steppe zones have been determined. The necessity of the study of natural foci of Q fever at not yet surveyed territories for at least 3-4 years has been substantiated.

[The biological properties of Rickettsia burnetii isolated in the northwestern Ukrainian SSR]. / Biologicheskie svoistva rikketsii Berneta, vydelennykh na severo-zapade Ukrainskoi SSR.

Biological properties of two strains of the Burnet rickettsia isolated in the natural foci of the Q fever in the northwest of the Ukrainian SSR are studied. Strain "Gishin" was characterized by high virulence for the laboratory animals and considerably exceeded the strain "Politsa" in the virulent properties. Antigen of phase I prepared from the strain "Politsa" was highly active in revealing the corresponding antibodies. The high-sensitive reaction of indirect immunofluorescence has shown the possibility to determine antibodies to phase I of the agent already from the 17th day after infection. Circulation of the Q fever agent with different virulent properties has indicated the necessity of purposeful diagnosis of this sickness both among the acute fever diseases and among flaccid course, subclinical and chronic ones not excluding the etiological role of the Burnet rickettsia.