[Immunity to tumors induced by herpes simplex virus in hamsters]. / Immunitet k opukholiam, indutsirovannym virusom prostogo gerpesa u khomiakov.

Preparations of early herpes simplex virus antigen (VIA) and specific antibodies to it were used to induce active and passive immunity to herpes virus-induced tumors in experimental animals. The results demonstrated the increased resistance of animals to transplantation of tumor cells due to vaccination with VIA-containing preparations. Thus, in VIA-vaccinated animals there was a delay in the development of tumors and the survival time was significantly higher than in the controls. The sera of these animals contained antibodies to VIA in high titres. Experiments with passive immunization also gave encouraging results.

[Protective action of cytotoxic lymphocytes depending on the antigenic determinant composition of influenza virus hemagglutinin]. / Protektivnoe deistvie tsitotoksicheskikh limfotsitov v zavisimosti ot sostava antigennykh determinant gemaggliutinina virusa grippa.

The protective role of cytotoxic lymphocytes (CTL) in dependence on composition of antigenic determinants of hemagglutinin of influenza viruses H3N2 was studied. It was established that CTL do not exert protective effect under conditions of adoptive transfer, when there is one common antigenic determinant in hemagglutinins of the virus forming immunity. When all antigenic determinants in hemagglutinins of influenza viruses are identical, CTL-like antibodies represent one of the main factors of antivirus immunity.

[Antigenic-genetic connections between human and animal influenza viruses]. / Antigenno-geneticheskie sviazi virusov grippa cheloveka i zhivotnykh.

A comparative immunological analysis of the composition of antigenic determinants (AGD) in hemagglutinins of human influenza A virus (HIAV) of the serosubtypes H1, H2, H3, and in hemagglutinins of animal influenza viruses (AIV) of the serosubtypes H1, H3-H6, H8-H11 with 25 polyclonal highly active sera was demonstrated. Using original monospecific mon AGD in HIAV and AIV hemagglutinins was demonstrated. Using original monospecific antibodies to individual AGD, those AGD contributing to similarity and differences between HIAV and AIV were determined. It was found that influenza A. virus strains isolated from man in the USSR in 1986 were identical in the antigenic structure of hemagglutinin with that isolated from a tern in 1973 (A/tern/Turkmenistan/18/73).

[Thomsen's antigen in the leukocytes of leukemia patients]. / Antigen Tomsena v leikotsitakh bol'nykh leikozom.

Leukocytes of 19 leukemic patients and 10 healthy donors were tested for the presence of Thomsen's antigen, using a method of specific adsorption of isogenic sera. Before the adsorption the cells were sonicated. Thomsen's antigen was found in leukocytes of leukemic patients but not in cells of healthy donors.

[Herpes simplex virus-associated antigen in leukemic cells]. / Antigen, assotsiirovannyi s virusom prostogo gerpesa v leikoznykh kletkakh.

Immunological methods (CFT, indirect IF) detected herpes simplex virus-associated antigen in leukocytes of 21 out of 56 leukemia patients. The antigen was more frequently found in leukocytes of patients with chronic lympho- and myeloleukemias, less frequently in acute forms of these diseases. No antigen was detectable in leukocytes of normal donors.

[Use of monospecific antibodies for determining the antigenic determinant composition in the hemagglutinins of the H3N2 influenza viruses of 1979-1983]. / Ispol'zovanie monospetsificheskikh antitel dlia opredeleniia sostava antigennykh determinant v gemaggliutininakh virusov grippa H3N2 1979-1983 gg.

The study of the antigenic composition of hemagglutinins of influenza H3N2 viruses isolated during epidemic outbreaks in 1979-1983, carried out by means of monospecific antibodies to individual antigenic determinants, showed heterogeneity of the antigenic structure of epidemically active variants. Some variants were antigenically identical to A/Bangkok/1/79 virus. Hemagglutinin structure of A/Shanghai/31/80, A/Philippines/2/82 and the like was found to contain a qualitatively new antigenic determinant heretofore undetectable in H1N1, H3N2 viruses.

[Detection of a heterogeneous population of influenza virus type A/H1N1 with monoreceptor sera to hemagglutinin antigenic determinants]. / Vyiavlenie geterogennosti populiatsii virusa grippa tipa A/H1N1 monoretseptornymi syvorotkami k antigennym determinantan gemaggliutinina.

Studies of the antigenic composition of hemagglutinins of influenza H1N1 virus variants isolated in 1981 using monoreceptor antibody to individual antigenic determinants obtained by the selective adsorption method showed some variants to represent heterogeneous populations manifesting antigenic properties of different H1N1 viruses. Passages of the heterogeneous virus in the presence of antiinfluenza serum resulted in cloning a subpopulation with the antigenic properties of the hemagglutinin similar to that of H1N1 viruses which had circulated in the end of the first period of epidemic activity of H1N1 viruses. The method "from-plaque-to-plaque" passages in MDCK cells yielded from the heterogeneous population a homogeneous variant which by the hemagglutinin antigenic properties was similar to H1N1 viruses isolated in 1956-1957.

[Nonspecificity of the phenomenon of influenza virus phagocytosis by murine macrophages]. / O nespetsifichnosti fenomena fagotsitoza virusov grippa makrofagami myshei.

Peritoneal macrophage cultures from intact mice and those immune to influenza virus A/PR/8/34 (HON1) were infected with homologous virus or influenza virus A/England/42/72 (H3N2) whereupon virus was isolated from chick embryos. It was established that in intact macrophages, both viruses duplicated similarly. Macrophages immune to virus HON1 equally disintegrated both in homologous virus and heterologous influenza virus H3N2.

[Immunogenicity of the antigenic determinants of influenza virus type B hemagglutinin]. / Immunogennost' antigennykh determinant gemaggliutinina virusov grippa tipa B.

The immunogenic activity of antigenic determinants of influenza type B viruses in primary and booster immunizations was studied. In primary immunization, the highest immunogenicity was found with the type- and strain-specific antigenic determinants whereas the antigenic determinants of group specificity were less immunogenic. After booster immunizations the animal sera had antibody to all 3 antigenic determinants.

[Association of retrovirus D with human malignant neoplasms]. / Assotsiatsiia retrovirusa D so zlokachestvennymi novoobrazovaniiami cheloveka.

Immunological methods of investigation (CFT, immunofluorescence and radioimmunoassay) showed that the antigen induced by retrovirus D was discovered in some malignant and benign human tumors of various localizations. No association of retrovirus D with human hemoblastoses could be established.

[Antigens associated with herpes simplex viruses in human and animal tumors]. / Antigeny, assotsiirovannye s virusami prostogo gerpesa v opukholiakh cheloveka i zhivotnykh.

The paper deals with the mechanism of emergence of early virus-induced antigens in animal tumors and their association with carcinogenesis. Problems of the specificity of the antigens of tumors induced by herpes simplex virus in different animal species and their immunogenicity for the tumor carriers are discussed.

[Antigenic determinants of the hemagglutinin of influenza virus type B]. / Antigennye determinanty gemaggliutinina virusov grippa tipa B.

A comparative immunological analysis of 3 influenza type B virus strains, B/Lee/40, B/M/8/52, and B/Victoria/70 was made. The presence of at least 3 antigenic determinants in hemagglutinins of the viruses under study was established by the method of selective adsorption. One of the determinants was type-specific and was shared by all the three strains, the other two determined the group- and strain-specificity of the viruses studied.

[Thomsen antigen in human normal and tumor tissues]. / Antigen Tomsena v normal'nykh tkaniakh i opukholiakh cheloveka.

A method of specific adsorption of appropriate antibodies from human serum was used to examine tumors of 15 patients with cancer and of 6 subjects with benign neoplasms. Tissues of cancerous tumors were found to contain Thomsen's antigen. Normal tissues of the same organ taken from the same patient did not contain the antigen nor was it contained by benign tumors. The titer of specific antibodies to Thomsen's antigen in the sera of patients suffering from cancer was considerably reduced as compared to that detected in normal subjects or in patients with benign tumors.

[Antigenic determinants of human influenza viruses among the influenza viruses isolated from animals]. / Antigennye determinanty virusov grippa cheloveka v sostave grippoznykh virusov, vydelennykh ot zhivotnykh.

Comparative studies of the antigenic properties of hemagglutinin (HA) of animal and human viruses revealed both similarities between them and complete differences in the composition of antigenic determinants. Avian influenza viruses A/chicken/Kamchatka/12/71, A/pintail/Primorie/730/76, and A/bat/Alma-Ata/73/77 were completely identical with human strains of influenza virus. Influenza A/horse/Miami/63 contains one antigenic determinant H3.1.HA of A/tern/Turkmenia/18/73 (Hav7) viruses has a peculiar set of antigens. Apart from two antigenic determinants H3.1 and H3.3 inherent in human virus strains, HA of A/tern/Turkmenia/18/73 virus contains an antigenic determinant the population of antibodies to which shows no relation to HA of subtypes Hav2-Hav9.

[Course of influenza in cyclophosphane suppression of cellular and humeral immunity]. / Techenie grippoznoi infektsii v usloviiakh podavleniia kletochnogo i gumoral'nogo immuniteta tsiklofosfanom.

Under conditions of immunosuppression of B- and T-cell functions with cyclophosphane, experimental influenza in mice infected with A/Aichi/2/68 (H3N2) runs early in the infection a much milder course than in mice given no such treatment. The mortality among immunosuppressed mice was 5 times as low as in the controls; the virus could be isolated from the lung tissue earlier and in higher titres; cyclophosphane inhibited the synthesis of antibodies and nonspecific thermolabile and thermostable tissue and serum inhibitors. Hepatization of the lungs in immunosuppressed animals was considerably less marked. The effect of cyclophosphane appeared to depend on its antiinflammatory properties.

[Hemagglutinin antigenic determinants of influenza viruses H1N1 isolated 1953-1957 in the composition of the hemagglutinins of influenza viruses H1N1 isolated 1978-1979]. / Antigennye determinanty gemaggliutininov virusov grippa H1N1 1953-1957 gg. vydeleniia v sostave gemaggluitininov virusov grippa H1N1 1978-1979 gg. vydeleniia.

Immunological analysis of antigenic determinants in the composition of hemagglutinins (HA) of H1N1 viruses isolated in the epidemic season of 1978-1979 showed their difference from A/USSR/090/77 virus HA. The A/Brazil/11/78 HA is characterized by 3 antigenic determinants two of which are identical with those of A/USSR/090/77 HA and one shows relationship with HA determinant of A/Omachi/1/53 virus, A/Fukushima/103/78 and A/Kagoshima/22/79 HAs are characterized by 1 determinant common with that of A/USSR/090/77 HA and 2 determinants identical with A/Omachi/1/53 virus HA. HAs of these viruses contain a determinant responsible for the antigenic relation of A/Omahi/1/53 HA with that of H1N1 viruses isolated in 1956-1957. The results suggest that the antigenic drift of HA of H1N1 viruses isolated in 1977-1979 occurs by the cycle characteristic of HA of H1N1 viruses isolated in 1950-1957. By the sensitivity to alpha-, beta-, and gamma-inhibitory of rabbit serum H1N1 viruses isolated in 1947-1957 and in 1977-1979 are quite similar with the exception of A/USSR/184/79 virus showing high sensitivity to gamma-inhibitors like H2N2 and H2N2 viruses.

[Search for the heterogenetic Forssman antigen in human breast tumor tissue]. / Poiski geterogennogo antigena Forssmana v tkaniakh opukholei molochnoi zhelezy cheloveka.

The complement fixation test was used to examine 80 human mammary tumors for the presence of heterogeneous Forssman antigen: 62 cases of cancers of different malignancy (adenocarcinoma, solid tumors), 13 cases of fibroadenomas and 5 cases of fibrocystic mastopathies. Subject to study was also normal tissue of the mammary gland. Forssman antigen was not found in all the tumors tested, as it was not detected in tissues of the normal mammary gland. Therefore the process of transformation of normal cells to tumor ones is not accompanied by the occurrence in them of heterogenous Forssman antigen.