[The diagnosis of staphylococcal infection by the determination of antigen-binding lymphocytes]. / Diagnostika stafilokokkovoi infektsii po opredeleniiu antigensviazyvaiushchikh limfotsitov.

Examination of 255 patients with different pyo-inflammatory and septic diseases revealed high effectiveness of the detection of staphylococcal infection by the determination of antigen-binding lymphocytes (ABL) in the indirect rosette-formation test with the use of specially designed staphylococcal erythrocytes immune reagents. ABL were detected in 63% of the examined patients, their content varied between 0.57% and 6.41% (which was, on the average, equal to 1.92 +/- 0.10%). The effectiveness of the method depended on the specificity of the staphylococcal reagent used in the test and on the time of examination of the patients. In patients with acute processes the determination of ABL permitted the diagnosis of staphylococcal infection before the activity of the corresponding serum antibodies could be measured. ABL were classified with T, B and "zero" populations of lymphocytes.

[The diagnostic effectiveness of erythrocyte immunoreagents made from different Pseudomonas aeruginosa antigens]. / Diagnosticheskaia éffektivnost' éritrotsitarnykh immunoreagentov iz razlichnykh antigenov Pseudomonas aeruginosa.

The diagnostic effectiveness of the passive hemagglutination (PHA) tests with the use of erythrocyte diagnostica (ED based on exotoxin A (ETA) and poly- and monovalent ED based on lipopolysaccharides (LPS) isolated from 5 most widespread P. aeruginosa serogroups was compared. 97 patients with different purulent septic diseases and 100 practically healthy adult donors were examined. The treatment of serum samples with 2-mercaptoethanol decreased the diagnostic effectiveness of serological examination. The simultaneous determination of the activity of antibodies to ETA and LPS essentially increased the number of positive results of the PHA tests in patients with bacteriologically confirmed P. aeruginosa infection, but not in patients from whom other bacteria were isolated. Considering the sensitivity and specificity of serological examination, as well as the decrease of the volume of necessary work and the consumption of immunoreagents, the optimum test conditions proved to be ensured by the use of two ED: LPS-based polyvalent ED and ETA-based ED.

[Serological diagnosis of suppurative-septic diseases of staphylococcal etiology]. / Serologicheskaia diagnostika gnoino-septicheskikh zabolevanii stafilokokkovoi étiologii.

The parallel examination of osteomyelitis patients by means of the passive hemagglutination (PHA) test with the use of antigenic erythrocyte diagnostic agents, prepared on the basis of hydrochloric acid extract from Staphylococcus aureus strain 209P and teichoic acid extract from S. aureus strain Wood 46 has revealed that these diagnostic agents are practically equal in their diagnostic effectiveness. In the examination of endocarditis patients measurement of the total antibody activity in the PHA test with diagnosticum on the basis of strain 209P has proved to be a more sensitive method, whereas in osteomyelitis patients the total IgG activity has been more accurately measured by ELISA. The treatment of sera with 2-mercaptoethanol essentially decreased the diagnostic effectiveness of the PHA test. The study has shown the diagnostic value of not only IgG but also of IgM antibody measurements.