[Antibody to Bacillus megaterium H. glycoprotein in pregnant women with a pathological course of pregnancy].
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Biomedical subjects
Publications and source records attributed to A I Autenshlius.
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Enzyme immunoassay performed in patients with malignant and benign affections of the lungs determined antibodies (Abs) to glycoprotein isolated from saprophyte microorganism Bacilus megaterium H. In pulmonary tuberculosis and nonspecific pulmonary inflammation the above Abs occurred in patients with fibrous-proliferative changes and associated neoplastic conditions. In lung cancer the Abs were detected in well and moderately differentiated tumors. Nondifferentiated and poorly differentiated variants did not exhibit any rise in Abs to glycoprotein.
Immune status was assessed in 44 patients with pulmonary re-infection tuberculosis using monoclonal antibodies. Quantitative indices of the immune status (relative amount of T-cells, T-helpers, T-suppressors, natural killers) correlated with tuberculosis activity. It is important to identify immunity-compromised subjects among tuberculous patients to rule out relapses with the help of early immunocorrection.
It was studied antibodies to saprophytic microorganism Bacillus megaterium H glycoprotein in healthy, oncological, non-oncological gastrointestinal patients and animals. High level of antibodies to microbial glycoprotein in blood sera was revealed in cancer and precancer patients. Analogical results were obtained in mice A/Sn and Balb/c with inductive or transplanted tumors. It has been suggested the use of Bacillus megaterium H glycoprotein (M. m. 65-70 kD) for immunological monitoring.
In order to reveal granulocyte sensitization in children with CNS pathology, use was made of the immunocytoadhesion test with cerebral antigens visualized by means of latex particles. The healthy children and those with encephalopathies manifested significant differences in the test as well as correspondence of the test values with the gravity of the clinical manifestations of CNS pathology. It has been noted that the mother's health status influenced the test values in neonates with encephalopathies.
The nucleolar test was used to study sensitization of peripheral blood lymphocytes from the newborn and infants. The test is based on the counting of cells with a clarification area around nucleoli after incubation with antigens and microbial bodies of the pathogenic and opportunistic microflora. It has been established that the peripheral blood from children with infectious-inflammatory diseases and from those vaccinated with BCG shows an increase in the sensitized lymphocyte count which is influenced by child's trophicity at birth and by administration of antibacterial therapy. The use of the nucleolar test as a diagnostic aid is advisable to identify the disease etiology.
High sensitivity of the microcalorimetric method for the registration of immunologic reactions and prospects of the practical application of the method demand an objective interpretation of the results and an explanation of the range of thermistometry findings varying from positive to negative values. The investigations have been carried out with models with known titers of purified antigens and antibodies and with unknown antibody titers. The method has been employed in examinations of children suffering from infectious allergic diseases and from central nervous system abnormalities. The energy processes connected with the negative, zero, or positive results of the reactions, depending on the antibody and antigen concentrations, are explained.
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A study was made of the nucleolar apparatus of peripheral blood lymphocytes of the newborns, infants and their mothers before and after incubation in vitro with tuberculin or toxoplasmic antigen. It was established that in the presence of sensitization to one or another antigen, there was an increase in the relative count of lymphocytes having a zone of clarification near nucleoli. In children vaccinated with BCG, such an effect was noted in 81.3% of the cases, whereas in children with verified toxoplasmosis, in all the cases. It is recommended that the method designed might be used as alternative for the complement fixation test in the diagnosis of toxoplasmosis.
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