[Investigation of antitumor action of acoustic resonance induced by theta-rhythm modulation].

Acoustic resonance induced by theta-rhythm modulation of bioelectric activity caused moderate inhibition of solid Ehrlich tumors to take place and extended murine life span. No untoward side-effects were registered.

[Anti-inflammatory and reparative effect of olipiphate].

The therapeutic effect of olipiphate was demonstrated for chronic inflammation of advanced arthritis and concanavalin A-related acute edema. The best systemic effect was obtained with 50 mg/kg, symptomatic--100 mg/kg. Skin wounds treated with 5% olipiphate (26 + 2) healed faster than those treated with 2% solcoseryl (30 + 0.

Radiobiological effects of olipifat during radiation exposure.

Preventive injections of olipifat to rats (intramuscularly in a single dose of 250 mg/kg 24 h before gamma-exposure in a dose of 7.6 Gy) decrease animal mortality from 70 to 50%, the mean life span of dead rats remained unchanged. Injection of olipifat before exposure in a dose of 5.

[Investigation of allergenic properties of olipiphat].

Olipiphat, which is experimentally capable of antitumor action, did not induce any immediate hypersensitivity, but lowered such response to horse serum; nor did it stimulate delayed hypersensitivity to full Freund adjuvant or sharp venous return after concavalin A. No skin or eye mucosa irritation was reported.

[Experimental evaluation of immunotoxicity of olipifat].

The paper presents our data on the influence of Olipifat on the mass and cell patterns of the immune system organs, phagocytic activity of macrophages, number of antibody-producing B-lymphocytes and immune rosette-forming T-lymphocytes. Olipifat showed no immunotoxic characteristics; it stimulated T-system immunity as evidenced by a significant increase in the number of immune rosette-forming T-lymphocytes in mice after injection of 100 or 50 mg/kg.

[Toxicity and antitumoral activity of two new complex compounds of rhenium].

Toxicity and antitumor action of two new complex compounds of rhenium (K2 [ReCl6] and [ReCl(4).2C6H4N2]) were investigated. LD50 of K2 [ReCl6], i.

Effect of a novel antineoplastic drug olipifat on antitumor immunity in mice.

Olipifat is an antineoplastic drug containing pyrophosphate and a product of special lignin processing. Donor C57Bl/6J mice with syngeneic B16 melanoma received a single 5-day course of olipifat. Effect of olipifat on antitumor resistance was evaluated by local neutralization test [3].

[Effect of olipifate on the wound healing proces and relapse after resection of Pliss lymphosarcoma].

The investigation was concerned with the influence of preliminary injections of Olipiphat, irrigation of operative wound and combination of both procedures on healing and relapse processes, following resection of Pliss lymphosarcoma at different stages after transplantation into rats. The physical condition of the animals after tumor resection on days 12, 10 or 7 of tumor growth was better than in controls, as a result of irrigation of the operative wound with Olipiphat or in combination with preliminary injections of the drug: they came out from anesthesia quicker, tidied themselves up and moved about the cage. Irrigation of the wound with Olipiphat or in combination with preliminary injections followed by longer survival after surgery performed at all stages of tumor growth.

Analgesic effect of olipiphate on mouse model of chemical stimulation of peritoneum.

We studied the analgesic effect of olipiphate, a product of lignin, against writhing provoked by intraperitoneal injection of acetic acid. Paracetamol was used as the reference drug. Both agents dose-dependently decreased the number of motor reactions caused by the irritant.

Inhibition of mouse melanoma cell proliferation by corticotropin-releasing hormone and its analogs.

Background: Observations that epidermal cells release both corticotropin-releasing hormone (CRH) and proopiome lanocortin (POMC) peptides has raised questions about the physiological relevance of this hypothalamo-pituitary-like system in mammalian skin. As CRH has shown anti-proliferative effects on cultured keratinocytes, we tested whether CRH can also regulate growth of melanoma cells.

Materials And Methods: CRH, [D-Glu20]-CRH, [D-Pro5]-CRH, acetyl-cyclo(30-33)[D-Phe12,D-Glu20,Nle21,D-His32,Lys33,D-Nle38]-CRH(4-41), acetyl-cyclo(30-33)[D-Phe12,Nle18,D-Glu20,Nle21,D-Ala32]-urotensin I(4-41), urocortin, and sauvagine were tested on Cloudman melanoma cell proliferation in culture and B16 melanoma tumor growth in C57B1/6 mice.

[Chemobiokinetics of sarcolysin and its peptides with glutaminic acid].

A 14C study of chemobiokinetics of sarcolysin and its peptides of glutaminic acid, dosage and routes of administration was conducted in intact rats and those bearing Walker's carcinoma. Similar in shape for peptides, kinetic curves differed from those found for sarcolysin. The rates of absorption and excretion of sarcolysin peptides in intraperitoneal and, particularly, oral administration were lower than those of sarcolysin.

[Study of the toxicity of pyrophosphate (an ingredient of Olipiphat)].

No signs of toxicity of pyrophosphate as an ingredient of olipiphat were found in acute and chronic experiments using mice, rats, guinea pigs, rabbits and dogs. Mild antitumor action was recorded.

[An experimental study of the antitumor properties of olipifat].

Olipiphat is an original lignin-based mix developed by special technology. It showed antitumor action against carcinoma of Ehrlich, breast adenocarcinoma Ca 755, melanoma B 16, lung carcinoma of Lewis, lymphosarcoma of Pliss, Walker's carcinoma, sarcoma 45 (tumor growth inhibition by 83-92%, increase in survival by 42-54%) and spontaneous murine tumors (the total of 9 pathologies). The drug was administered by 3-5 injections at 2-3 day intervals.

[The use of dioxadet in chemoembolization of the hepatic artery in primary and metastatic cancer of the liver].

An evaluation of the treatment of 42 patients with extended primary hepatic tumors and multiple intrahepatic metastases of colorectal carcinoma established the effectiveness of a newly-developed fat-soluble cytostatic drug--dioxadet, used for chemoembolization particularly, when foci fed from small arterial vessels were located along the periphery.

[Results of endovascular interventions (embolization and chemoembolization) in the treatment of operable and extensive kidney cancer].

The results of an all-round examination and complex treatment of 323 patients with renal cell carcinoma were evaluated. Locally advanced tumors were diagnosed in 143 (44.3%) and extended ones--in 180 (66.

[Multicenter clinical trial of the antitumor drug Dioxadet (phase II)].

A stage II of the joint clinical study of Dioxadet, an ethylene imine drug, was carried out to evaluate its therapeutic effect in 229 patients and side-effects in 239 patients with malignancies of various sites. Marked therapeutic effect was observed in ascitic malignancies of the ovary and a moderate one--in disseminated breast cancer. The most frequent side-effect was reversible myelodepression, often delayed.

[Antitumor activity and toxicity of combined doxorubicin and disodium salt of methylene-1,1-diphosphonic acid].

In experiments using mice and rats with transplantable Ehrlich ascites tumors, sarcoma-180 and adenocarcinoma of Walker, antitumor activity of doxorubicin in combination with disodium salt of 1,1-methylenediphosphonic acid proved higher than that of doxorubicin alone. Most advantage was gained with daily treatment. The toxic effect of said complex treatment seemed to differ slightly from that of doxorubicin as judged on the basis of survival, changes in body mass and peripheral blood count.

[The pharmacological properties of preparations from the aziridinyl triazine group].

The results of experimental studies of three drugs from aziridinyltriazine group, dioxadet, trisadet, and furizil, are presented. These drugs exhibit a pronounced therapeutic effect against a broaden spectrum of tumors grafted in mice and rats. Toxic effect of the drugs is exhibited mainly in suppression of blood formation.

Experience of the treatment with Sehydrin (Hydrazine Sulfate, HS) in the advanced cancer patients.

The results of Sehydrin (Hydrazine Sulfate, HS) treatment of 740 patients with the advanced, recurrent or metastatic solid tumours of various localizations or malignant lymphomas, for whom all the methods of specific treatment (surgery, radiation, chemotherapy) had been exhausted are presented in this work. The objective response, symptomatic therapeutic effects and toxicity were estimated. Clinically significant objective responses were registered in patients with the soft tissue sarcomas, including neuroblastomas, and paradoxically--in such semimalignant tumours as desmoids.

[Basic and salvage pathways of NAD biosynthesis in organs of normal rats, tumor-bearing rats and in tumors].

The rates of quinolinic and nicotinic acids and nicotinamide utilization for NAD biosynthesis in organs of normal rats and those with lymphosarcoma of Pliss and Walker's carcinosarcoma were studied. All three compounds were shown to be NAD's precursors in the liver and kidneys of normal animals. Quinolinic acid failed to stimulate the increase in NAD concentration in the liver of Walker carcinosarcoma-bearing rats.