Bubo-M, the first Russian associated vaccine, was found to have low reactogenicity and high immunogenic potency. The frequency of postvaccinal reactions in the group of persons immunized with Bubo-M (20%) appeared to be considerably lower than among persons who received the combined injection of adsorbed DT toxoid with reduced antigen content and vaccine against hepatitis B (47.7%). Following the course of vaccination the level of anti-HBs considerably exceeded the protective level. Immune response to the diphtheria and tetanus components of Bubo-M exceeded that observed after immunization with absorbed DT toxoid with reduced antigen content (p < 0.05).

Adolescent↗

PubMedDate not supplied

[Reactions to and immunogenic properties of the combined vaccine Bubo-M for immunization of children against diphtheria, tetanus and viral hepatitis B].

Bubo-M, the first Russian combined vaccine, was found to have low reactogenicity. The difference between the number of postvaccinal reactions in the group of children immunized with Bubo-M (25.9%) and those in the group of children who had been simultaneously injected into different sites of the body with ADS-M toxoid (adsorbed DT toxoid with reduced antigen content) and hepatitis B vaccine (26.7%) was not statistically significant. Following immunization a considerable increase in the level of diphtheria and tetanus antibodies (p < 0.005) was observed in all children (100%), the level of HBs antibodies in the group of children immunized with Bubo-M (the geometric mean titer: 13,721 IU/l) essentially exceeding that observed in the control group injected with ADS-M toxoid and hepatitis B vaccine (the geometric mean of the titer: 2,441 IU/l). Bubo-M was duly registered and allowed for industrial production and medical use.

Antibodies, Bacterial↗

PubMedDate not supplied

[Evaluation of the reactogenicity and immunogenic potency of combined vaccine "Bubo-Kok" in the immunization of children against diphtheria, tetanus, pertussis and viral hepatitis B].

Combined vaccine "Bubo-Kok" is characterized by safety and high immunological activity. The number of postvaccinal reactions in children aged 1 and 2 years, immunized with vaccine "Bubo-Kok", was not statistically different from those in groups of children immunized with adsorbed DPT vaccine, as well with such vaccine in combination with vaccine against hepatitis B. After the completion of the primary course of immunization 100% of children had protective antibody titers against diphtheria, tetanus and hepatitis B. Antibody titers against pertussis, equal to or exceeding protective titers, were found in more than 70% of immunized children. The immunogenic potency of vaccine "Bubo-Kok" with respect to all its components was not inferior to that of adsorbed DPT vaccine and vaccine against hepatitis B, when introduced simultaneously in different areas of the body. Vaccine "Bubo-Kok" successfully passed state trials and was recommended for registration.

Antibodies, Bacterial↗

PubMedDate not supplied

[The chromatography of yeast recombinant HBsAg in porous silicas].

The results of the study of adsorption processes of recombinant HBsAg on various porous silicas are presented. The maximal yield of the recombinant antigen by absorption chromatography was observed on unmodified macroporous glass MPS-2000. A mean yield in this case was 85%. Silica C-80 modified with polyvinylpyrrolidone proved to be most acceptable for gel-penetrating chromatography. The adsorption and gel-penetrating chromatography on porous silicas proved to be an effective method for purification of recombinant HBsAg.

Adsorption↗

PubMedDate not supplied

[Immobilization of glucoamylase and acid proteinase on modified silichrome using N-carbethoxy-2-ethoxy-1,2-dihydroquinoline].

Using N-carbethoxy-2-ethoxy-1,2-dihydrochinoline, glucoamylase and acid proteinase were immobilized on silochrome C-80 modified by gamma-aminopropyl triethoxy silane and then succinic anhydride. The maximum percentage of protein binding was 46.0 for glucoamylase and 35.0 for acid proteinase. Acid proteinase showed a decrease of specific activity.

Enzymes, Immobilized↗

PubMedDate not supplied

[Production of antibiotics closely related to olivomycin by various species of Actinomyces].

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Actinomyces↗

PubMedDate not supplied

[Immobilization of acid proteinase from Aspergillus awamori on inorganic carriers with carboxylic groups].

To achieve acid proteinase immobilization on inorganic carriers with carboxylic groups, water soluble carbodiimides and N-carbethoxy-2-ethoxy-1,2-dihydrochinoline were used. The influence of different concentrations of the native enzyme and carbodiimides on the immobilization process was studied. The preparations of immobilized acid proteinase were obtained. Its specific activity was 73% in relation to initial activity of enzyme. Amount of binding protein was 31% and amount of binding activity was 23%. Temperature optimum of immobilized proteinase was 40-45 degrees, termostability was than immobilized enzyme.

Aspergillus↗

PubMedDate not supplied

[The development of Russian nutrient media for isolating the recombinant surface antigen of the hepatitis B virus].

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Chromatography, Gel↗

PubMedDate not supplied

[Russian recombinant vaccine against hepatitis B (results of controlled trials)].

Two yeast recombinant vaccines were compared: the Russian hepatitis B Combiotech vaccine in a dose of 20 mg and the Recombivax-HB vaccine in a dose of 10 mg manufactured in the USA (Merk, Sharp and Dohme Ltd.). Both agents were found safe and low reactogenic. After a course of 3 vaccinations with the Russian vaccine 92.5 to 97.5% subjects vaccinated after the 0-1-2 months and 0-1-6 months protocols had high levels of specific antibodies. In the group vaccinated with the American vaccine, antibodies to HBsAg were found in the sera of 95 to 100% subjects. These results demonstrate high immunological activity of both Russian and American vaccines.

Adult↗