[An interleukin-1 beta efficacy study in the treatment of combined radiation-thermal lesions]. / Issledovanie éffektivnosti interleikina-1 beta pri lechenii kombinirovannykh radiatsionno-termicheskikh porazhenii.

The experiments were carried out on F1 (CBA x C57B16) male-mice. It was shown that, in contrast to a therapeutic effect of IL-1 for the solely irradiated mice, a single subcutaneous injection of 100 micrograms/kg recombinant human IL-1 beta in 4 h after a combined radiation-thermal injury (CRTI) increased significantly the death rate of the animals within the first 2-4 days. Administration of 150 ng IL-1 per mouse in 4, 24, or 48 h after the CRTI decreased an average life-span of mice. A single injection of cytokine in 5 days after the CRTI increased the survival rate by 45%. Repeated injections IL-1 with a dose of 100 pg per mouse in 2, 4, and 6 days after the CRTI did not aid in the haematological indices and did not affect the survival rate of the animals.

[Effects of a synthetic carbon-mineral sorbent and antibiotics on the development of combined radiation and thermal injury]. / Vliianie sinteticheskogo uglerod-mineral'nogo sorbenta (SUMS-1) i antibiotikov na razvitie kombinirovannogo radiatsionno-termicheskogo porazheniia.

Male Wistar rats exposed to whole-body irradiation, the midline absorbed dose was 7.5 Gy. Full-sickness thermal burn 15% of body surface inflicted immediately after irradiation. Experimental study of the therapeutic efficacy of enterosorption alone or in combination with antibiotics doxycycline and ciprofloxacin performed. The strong decrease of bacterial endotoxemia, toxic oligopeptides' level and general blood toxicity revealed after treatment compared with non-treated animals with combined injuries. Corrections of postirradiation intestinal dysbacteriosis revealed too. The best result observed when carbon mineral sorbent and antibiotics administered daily within the first 10-14 days after combined injury. Survival of treated animals increased up to 80% (all rats of control group died during 30 days after combined injury).

[The efficacy of using synthetic carbon-mineral sorbents in combined radiation-thermal lesions]. / Effektivnost' primeneniia sinteticheskikh uglerod-mineral'nykh sorbentov pri kombinirovannykh radiatsionno-termicheskikh porazheniiakh.

The effect of enterosorbents of group "SUMS" on the manifestations of endogenous intoxication syndrome and dysfunction of small intestine was studied in rats with combined radiational-thermal injuries. The "SUMS" enterosorbents are shown to reduce the general toxemia, and promote the recovery of intestinal wall digestion enzyme activity and glucose absorption.

[The characteristics of the development of bacterial enterotoxemia and endotoxemia in combined radiation and thermal lesions]. / Osobennosti razvitiia bakterial'noi énteroéndotoksemii pri kombinirovannykh radiatsionno-termicheskikh porazheniiakh.

Thermal burn of irradiated rats increases the level and the length of the postirradiation enteroendotoxemia and aggravates the postirradiation impairment of the hematoenterocitic barrier. The pharmacological correction of the small intestine motility and introduction of ciproheptadine, an agent that blocks serotonin receptors, ameliorates the above phenomenon in radiation and thermal injuries.

[The use of preparations of protozoan origin as agents for the prevention and early therapy of combined radiation-thermal injuries]. / Ispol'zovanie preparatov protozoinogo proiskhozhdeniia v kachestve sredstv profilaktiki i rannei terapii kombinirovannykh radiatsionno-termicheskikh porazhenii.

Radioprotective and therapeutic effects of astazian and astazilide, the drugs of protozoan origin, were studied in comparison with known modifiers of biological reactions (bacterial polysaccharides, synthetic polypeptides) in combined radiation-thermal injuries (CRTI). The efficiency of drugs under examination was found to be time- and dose-dependent. Application of the drugs of protozoan nature 24 hours prior to or 1 hour following CRTI provided 30 to 50% survival of experimental animals for 30 days as compared to 4.5% in the group of untreated mice. Administration of the drugs 3-7 days following CRTI exerted no therapeutic effect.

[Interphase death of thymus cells in combined radiation-thermal injury against a background of prophylactic administration of alpha-tocopherol and indomethacin]. / Interfaznaia gibel' kletok timusa pri kombinirovannom radiatsionno-termicheskom porazhenii na fone profilakticheskogo vvedeniia al'fa-tokoferola i indometatsina.

The administration of alpha-tocopherol prior to radiation and thermal affection enhances chromatin degradation in thymocytes, increases the number of pyknomorphic cells in the critical zone of thymus, and enhances injury to erythrocyte membranes. The preventive administration of indomethacin does not influence the interphase cell death.