Using monoclonal antibodies, peripheral blood helper/inducer (OKT4) and cytotoxic/suppressor (OKT8) lymphocytes were measured in 14 normal controls, 36 patients with multiple sclerosis at different stages of the disease and 15 patients with isolated optic neuritis. Thirty-four of these individuals were studied on two or more occasions at intervals up to 340 days. Patients with multiple sclerosi...

Laboratory data are presented on 15 patients with hemophilia A. Mean OKT4/OKT8 ratio in hemophiliac patients was significantly lower than in the controls. Although no patients with acquired immunodeficiency syndrome (AIDS) have been found in Japan, hemophiliac patients are supposed to be at increased risk of AIDS by our studies.

Human peripheral blood lymphocytes are stained with the metachromatic dye acridine orange and the fluorescence of individual cells is measured by flow cytometry. The relative content of stainable RNA per cell is estimated by comparison with RNase-treated cells. Non-T and T lymphocytes have different mean quantities of RNA per cell, and these classes exhibit different distributions of RNA conten...

Venous blood mononuclear cells from 42 children with primary immunodeficiency disorders and from controls matched for age were studied for lymphocyte subpopulations by E rosetting, surface immunoglobulin, and a panel of anti T cell monoclonal antibodies (OKT series). In 3 cases of severe combined immunodeficiency (SCID) due to adenosine deaminase deficiency, very few circulating T or B cells we...

Synovial tissue obtained at synovectomy of the knee joint in 21 patients with rheumatoid arthritis contained a significantly lower proportion of T lymphocytes as measured by spontaneous rosette formation with nonsensitized sheep red blood cells than did synovial fluid or blood from the same patients. There was on concomitant increase in synovial tissue lymphocytes with B-cell markers such as su...

Antibodies to GM1 ganglioside were used to study murine lymphocyte populations. In A, AKR, and BALB/c mice, anti-GM1 reacts with thymocytes and peripheral T cells. This reactivity of anti-GM1, studied by immunofluorescence, is independent of Thy-1 type and appears to be related to the reactivity of cross-reacting antibodies to asialo GM1 and GD1b, rather than GM1 itself. In addition, a subpopul...

We have defined two subpopulations of B lymphocytes in chronic lymphocytic leukemia (CLL). The major variant (termed typical) was characterized by the presence of a relatively homogeneous population of small-to-medium-sized lymphocytes with low-density SmIgM and no evidence of intracellular Ig synthesis. A minor group (termed atypical) was identified by the presence of a pleomorphic cell popula...

The variability of the clinical course in viral hepatitis depends more on the immune response of the host that on the type of virus involved. Inductors/helpers (LT4) or cytotoxic/suppressors (LT8) T-lymphocytes regulate the immune response which can be modified during infection or in homosexuals who are at high risk for viral infection. We studied 45 males with viral hepatitis (25 B, 13 A, and ...

Protection against Mycobacterium tuberculosis is based on cell-mediated immunity, most importantly involving CD4(+) and CD8(+) T-cell subsets. The aim of this study was to evaluate CD4(+) and CD8(+) T-cell profiles and CD19(+) and CD3(+)CD(16 + 56)(+) populations in patients with pulmonary tuberculosis. CD4(+) and CD8(+) T cells, B-lymphocytes, and natural killer (NK) cells were evaluated in 75...