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M9480567.TXT
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1994-08-20
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Document 0567
DOCN M9480567
TI Flow cytometric analysis of natural killer cell function as a clinical
assay.
DT 9410
AU Hatam L; Schuval S; Bonagura VR; Department of Pediatrics, Schneider
Children's Hospital, Long; Island Jewish Medical Center, New Hyde Park,
NY 11042.
SO Cytometry. 1994 May 1;16(1):59-68. Unique Identifier : AIDSLINE
MED/94307086
AB The 51Cr release assay has been the method of choice in analyzing
natural killer cell (NK) function. Previous FCM cytotoxicity assays of
NK activity have had numerous disadvantages that discouraged clinicians
from attempting to evaluate NK function by flow cytometry. We
demonstrate the effectiveness of using PKH-26, a stable membrane dye, to
label the K562 target cells and propidium iodide intercalation into
killed target cell DNA to determine the percentage of target cells
killed by effector NK cells from the peripheral blood or bone marrow.
This method compares favorably with the 51Cr release assay and is
quicker and easier to perform. The percentage of cytotoxicity of NK
cells (CD3- CD56+ and/or CD16+) from 10 normal subjects and 10
HIV-infected children are reported to demonstrate the feasibility of
studying NK function in clinical populations by FCM. The potentiation of
cytolysis by alpha-interferon and interleukin 2 in vitro was also
compared between these two study groups. In addition, a patient whose
leukemic blasts expressed CD56+ was also studied for NK activity using
this flow cytometric assay. The benefits of using this flow cytometric
approach to clinically assess NK function are discussed.
DE Adolescence Adult Child Child, Preschool Chromium
Radioisotopes/DIAGNOSTIC USE Cytotoxicity Tests, Immunologic *Flow
Cytometry Fluorescent Dyes/DIAGNOSTIC USE Human HIV
Infections/IMMUNOLOGY Immunophenotyping Killer Cells,
Natural/IMMUNOLOGY/*PHYSIOLOGY Leukemia, Myelocytic, Acute/IMMUNOLOGY
Tumor Cells, Cultured JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).