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Biomedical subjects

L Timár

Publications and source records attributed to L Timár.

27 records · Page 2Linked to original sources
PubMed1981

Serological follow-up of children with infectious mononucleosis caused by Epstein-Barr virus.

Ninety children, most under 6 years of age, 73 of whom were suffering from a disease suspect of infectious mononucleosis, were examined serologically for EBV infection. Acute EBV infection was demonstrated in 40 cases. These children were followed up until the end of the second year by examining serum samples taken every month of every third month for anti-VCA-IgM, anti-VCA-IgG, anti-VCA-IgA anti-EBNA, and for the specific antibodies to the components D and R of the early antigen. Heterophil antibodies were examined by agglutination of sheep and horse erythrocytes. The temporal course of the antibody response was similar to those reported in adults while anti-EA-D and heterophil antibodies were demonstrated less frequently.

Adolescent↗
PubMed1981

Generalized varicella in severe combined immunodeficiency with B lymphocytes.

A six-month-old male infant, whose elder brother had died of progressive vaccinia due to combined immunodeficiency, contracted varicella-zoster infection, and died of disseminated varicella ten days after onset of the disease. As with his elder brother, the blood levels of immunoglobulins were normal, and specific varicella antibodies appeared in his serum, although in low concentrations. His T-lymphocytes, although their number was subnormal, could be stimulated with phytohaemagglutinin, and production of migration inhibitory factor could also be demonstrated. The necropsy confirmed thymic dysplasia. In addition to histological changes, severe combined immunodeficiency and foci of malignant lymphoma were present. On this basis the disease was classified, according to the WHO recommendations, as severe combined immunodeficiency with B lymphocytes, complicated by malignant lymphoma.

B-Lymphocytes↗
PubMed1980

Leukocyte migration inhibition with Epstein-Barr virus negative and positive cell extracts.

Leukocyte migration inhibition of seronegative and seropositive healthy children and that of patients with infectious mononucleosis was studied in the presence of EBV-negative and -positive cell extracts. Seronegative children showed no alteration of the leukocyte migration in the presence of the extracts. EBV-positive cell extracts caused significant migration inhibition in the group of seropositive healthy children and of IM patients. The effect was specific, since the EBV-negative cell extract had no inhibitory effect. In the acute phase of infectious mononucleosis a depressed response was observed, while after recovery the same migration inhibition could be detected. The possible cause of the depressed cell-mediated immune response in the acute phase of the disease is discussed.

Adolescent↗
PubMed1978

Progressive vaccinia: immunological aspects and transfer factor therapy.

Progressive vaccinia is a rare and serious complication of smallpox vaccination. Depressed immune function can generally be found as an underlying disorder; thus adequate immuno-correction may be expected to be therapeutically effective. Humoral and cell-mediated immunity was repeatedly examined in one case throughout the course of the disease. Results indicated partial deficiency of cell-mediated immunity. No therapeutic effect was achieved by using human antivaccinia immunoglobulin and N-methylisatin beta-thiosemicarbazone. Transfer factor therapy was also attempted. Treatment with a non-specific transfer factor preparation was followed by a transitory clinical improvement. A specific transfer factor preparation given during the last month of life, however, had no therapeutic effect. The patient died on the 145th day after vaccination. Autopsy findings pointed to combined immune deficiency.

Humans↗