[Streptococcal infection and chronic glomerulonephritis in children]. / Streptokokkovaia infekstiia i khronicheskii glomerulonefrit u detei.

Microbiological, immunological and immunohistochemical studies were carried out in 78 children with different clinicomorphological forms of chronic glomerulonephritis (GN). According to the data obtained, the role of streptococcal infection (SI) is inconclusive in certain clinicomorphological forms of chronic GN, suggesting different approaches to the treatment of these patients. The etiological role of SI is most probable in mesangioproliferative and mesangiocapillary GN, manifesting by hematuric and mixed forms of chronic GN. Antibacterial therapy is indicated to patients with a rise of the level of ASL-O and with the clinical signs of acute SI or exacerbation of chronic tonsillitis in the same patients, especially during immunosuppressive therapy.

[Etiology of a nephrotic form of primary chronic glomerulonephritis in children]. / K étiologii nefroticheskoi formy pervichnogo khronicheskogo glomerulonefrita u detei.

As many as 91 children with the nephrotic and hematuric forms of primary chronic glomerulonephritis were examined for the presence of streptococcal infection and allergic diseases. It has been shown that as compared to patients with the hematuric form of chronic glomerulonephritis, those with the nephrotic form manifest a higher occurrence of A3, a dramatic rise of serum IgE and its dependence on the activity of glomerulonephritis. The data obtained may attest to the etiological role played by allergy in the development of the nephrotic form of glomerulonephritis. Frequently occurring colonization of hemolytic streptococcus in the fauces and the rise of the ASL-O titer in the blood serum seen in patients with the hematuric form of glomerulonephritis, its dependence on the disease activity suggest the streptococcal etiology in patients with that form in contrast to those with the nephrotic form.

[Urinary microflora and the status of local immunity in children with cystitis]. / Mikroflora mochi i sostoianie mestnogo immuniteta u detei s tsistitom.

Study of the enzymatic and adhesive properties of E. coli isolated from the urine of children with cystitis has demonstrated that P-fimbriae, DNAase- and phosphatase-positive strains with pronounced hemolyzing and metabolic properties mostly occurred in children with associated cystitis and chronic obstructive pyelonephritis. In children suffering from cystitis, the changes on the part of local immunity manifested by the decrease of the content of SIgG in the urine and by the lack of SIgA1 and SIgA2. In children with a disease standing up to 3 years, the synthesis of IgA turned out dominant in the mucous membrane of the neck of the urinary bladder and in the trigone of the bladder, with IgG and IgM output being less intensive. The authors have proved the efficacy of the treatment with tomicide instilled into the urinary bladder of children suffering from cystitis.