background: cell mediated immunity, especially cytotoxic t cell responses against hiv-1 infection, plays a critical role in controlling viral replication and disease progres-sion. dna vaccine is a novel technology which is known to stimulate strong cellular immune responses. many dna vaccines have been tested for hiv infection but there is still no effective vaccine against this infection. cons...

Epstein-Barr virus (EBV) is a potent B cell transforming pathogen in humans. In most persistently EBV-infected individuals, potent cytotoxic lymphocyte responses prevent EBV-associated pathologies. In addition to comprehensive adaptive T cell responses, several innate lymphocyte populations seem to target different stages of EBV infection and are compromised in primary immunodeficiencies that r...

The effects of amphotericin B, 5-fluorocytosine, and the combination of both drugs on lymphocyte function in vitro were investigated. Amphotericin B, alone or in combination with 5-fluorocytosine, significantly suppressed both spontaneous lymphocyte transformation and the response of lymphocytes to stimulation with streptokinase-streptodornase. 5-Fluorocytosine had no effect on spontaneous or a...

Cellular immune responses to human immunodeficiency virus type 1 (HIV-1) infection, particularly in vivo responses, have been difficult to study in large patient cohorts because of technical impediments. By use of small peptide fragments of the HIV-1 gp120 third variable loop, the CD4 T lymphocyte epitopes of 2 HIV-infected persons were mapped using a cutaneous delayed-type hypersensitivity (DT...

With new techniques 19 bone marrow transplant (BMT) recipients were monitored for lymphocyte proliferation and specific IgG production in vitro by cytomegalovirus (CMV) antigen in solid phase. Twelve patients got a reactivated CMV infection as defined by virus isolation or serum IgG conversion. Lymphocyte proliferation and in vitro IgG production responses were significantly stronger in these 1...

The leukocyte integrin LFA-1 (CD1 la /CD 18) plays an important role in lymphocyte recirculation and homotypic interactions. Leukocytes from mice lacking CD11a displayed defects in in vitro homotypic aggregation, in proliferation in mixed lymphocyte reactions, and in response to mitogen. Mutant mice mounted normal cytotoxic T cell (CTL) responses against systemic LCMV and VSV infections and sho...

In vitro tests of lymphocyte function have been performed in 61 patients with ;classical' or ;definite' rheumatoid arthritis. In vitro lymphocyte function was assessed by lymphocyte transformation responses to phytohaemagglutinin (PHA), Pokeweed mitogen (PWM), Candida antigen, and herpes simplex type I (HSV1). Follow up data were available after 6 months of treatment in 32 of these patients. Sp...