[Role of macrophages in the antitumor action of the recombinant probiotic Subalin].

Course administration of the recombinant probiotic subalin was shown to significantly potentiate the cytotoxic action of macrophages from healthy and tumor-bearing mice against mastocytoma P-815 cells and syngeneic target cells of lung sarcoma of Lewis. Carrageenan, an inhibitor of macrophage activity, significantly cut down the antimetastaic effect of subalin. The crucial role of macrophages in the mechanism of this function of the drug is discussed.

[Preclinical toxicological study of ecorsin].

A new drug preparation ecorsin based on the dry aspen bark extract was studied for toxicological safety on a preclinical stage. The drug exhibited no toxicity upon a single administration to rats and mice (both male and female). The intragastric administration of ecorsin for 3 months to rats (at a daily dose of 50, 250, and 500 mg/kg) and rabbits (25 and 50 mg/kg) led to neither functional not morphological changes in hemopoietic and lymphoid organs, liver, kidney, heart, digestive system, and CNS.

[Parameters of cellular immunity in lung cancer patients with different types of adaptation reactions during polychemotherapy].

A relationship between cellular immunity and general adaptation syndrome in the course of CAM polychemotherapy has been investigated. The results point to a lack of lymphopenia, lower levels of T-suppressors and higher instability of immunological indices in patients showing increased activation reaction and maximum antitumor resistance during cytostatic therapy, unlike in those in stress. This opens an opportunity for correction.

[Effect of Scutellaria baicalensis extract on the immunologic status of patients with lung cancer receiving antineoplastic chemotherapy].

Cytostatic therapy of patients with lung cancer is attended with decrease in the relative number of T-lymphocytes and their theophylline-resistant population. Patients who were given SB showed a tendency towards increase of these parameters during antitumor chemotherapy. The immunoregulation index (IRI) in this case was approximately twice the background values during the whole period of investigation.

[Modulation of the antitumor effect of cyclophosphamide by the recombinant probiotic Subalin].

A new preparation "subalin" developed on the basis of a recombinant saprophyte strain of Bacillus subtilis 2135/105 producing human interferon alpha-2 has been tested for its ability of increasing the effectiveness of antitumor therapy. The study used Lewis lung carcinoma bearing mice C57B1/6 treated with injections of 60 mg/kg body cyclophosphamide, intraperitoneally, on days 3 and 7 of tumor growth. Subalin was administered per as on days 1-14 after tumor transplantation.