PHA

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Modulation of CD8 and CD3 by HIV or HIV antigens

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Abstract

To investigate whether human immunodeficiency virus (HIV)-1 and HIV-1 antigens modulate surface and cytoplasmic CD8 or CD3, as well as CD4, we used cell permeabilization reagents, surface/cytoplasmic fluorescent staining, multiparameter flow cytometric techniques and an in vitro culture system in which relatively few lymphocytes are actively infected with HIV.… Read more

Illustration(s) pertain to the topic addressed in this publication, not the specific research or data presented in the publication

Mitogen-induced modulation of CD3, CD4, and CD8

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Abstract

It is not clear whether CD3 contacts CD4 or CD8 directly, nor have the regulation and interregulation of expression of these three receptor molecules been determined. We explored these issues by first stimulating human peripheral blood lymphocytes in vitro with three well-characterized T-cell receptor-directed mitogens (phytohemagglutinin [PHA], concanavalin A [ConA], and anti-CD3 monoclonal antibody [anti-CD3]) and then using multiparameter flow cytometric techniques to investigate modulation of surface (sur) and cytoplasmic (c) CD3, CD4, and CD8.… Read more

Illustration(s) pertain to the topic addressed in this publication, not the specific research or data presented in the publication

Increased expression of CD80 and CD86 in in vitro-infected CD3+ cells producing cytoplasmic HIV type 1 p24

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Abstract

Determining the effects of HIV infection on the expression of cell surface molecules has been limited by an inability to differentiate between productively infected cells and those without productive infection. We inoculated human peripheral blood mononuclear cells from healthy, human immunodeficiency virus type 1 (HIV) antibody-negative donors with HIV; noninoculated cells were also examined.… Read more

Illustration(s) pertain to the topic addressed in this publication, not the specific research or data presented in the publication

The effects of mitogens, IL-2 and anti-CD3 antibody on the T-cell receptor V beta repertoire

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Abstract

Phytohaemagglutinin (PHA), Concanavalin A (Con A), interleukin-2 (IL-2), and monoclonal antibodies to CD3 (CD3MoAbs) are used for the assessment of the T-cell receptor (TCR) BV gene family expression in autoimmune disorders and multiple sclerosis, and to produce clones for assessment of cytokine profiles in progressive human immunodeficiency virus infection.… Read more

Illustration(s) pertain to the topic addressed in this publication, not the specific research or data presented in the publication

Effects of exposure to factor concentrates containing donations from identified AIDS patients. A matched cohort study

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Abstract

We compared recipients of eight lots of factors VIII and IX voluntarily withdrawn from distribution because one donor was known to have subsequently developed the acquired immunodeficiency syndrome with a nonexposed cohort matched by age, sex, and factor use. The factor VIII recipient cohorts did not differ in prevalence of antibody to human immunodeficiency virus (HIV) (exposed, 75%; nonexposed, 86%), T-cell subset numbers (median: exposed, 619 T-helper cells per cubic millimeter; nonexposed, 659 T-helper cells per cubic millimeter), T-helper to T-suppressor ratios, or immunoglobulin levels.… Read more