Volume 26, Issue 8 pp. 954-960
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Natural killing activity in sjögren's syndrome

N. Miyasaka MD

N. Miyasaka MD

Assistant Professor of Medicine, UTHSCSA

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

Dr. Miyasaka is an Arthritis Foundation Postdoctoral Fellow

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W. Seaman MD

W. Seaman MD

Assistant Professor of Medicine, UCSF

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

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A. Bakshi MD

A. Bakshi MD

Research Associate

National Institutes of Health, Bethesda, MD

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

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B. Sauvezie MD

B. Sauvezie MD

Hopital Saint-Jacques, Clermont-Ferrand, France

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

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V. Strand MD

V. Strand MD

San Francisco, CA

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

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R. Pope MD

R. Pope MD

Associate Professor, UTHSCSA

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

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N. Talal MD

Corresponding Author

N. Talal MD

Professor of Medicine and Microbiology

Division of Clinical Immunology, Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, and the Immunology/Arthritis Section, Veterans Administration Hospital at San Francisco, The University of California, San Francisco, California.

Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78284Search for more papers by this author
First published: August 1983
Citations: 57

Abstract

Natural killing (NK) by peripheral blood mono-nuclear cells (PBMC) against K562 cells was examined in 27 patients with Sjögren's syndrome and 17 normal controls. NK activity in the patients was significantly reduced compared with normal controls (34.6 ± 3.4% versus 52.2 ± 3.4%, P < 0.001). Patients with secondary Sjögren's had lower cytotoxicity compared with those who had primary Sjögren's (28.5 ± 5.5% versus 37.3 ± 4.2%, P < 0.01). The proportion of PBMC with characteristics of NK cells was not decreased in the patients. NK by normal PBMC was diminished both in the presence of sera from patients with reduced NK and when the effector cells were pretreated with the sera. Pretreatment of target K562 cells did not alter NK activity. Suppression of NK by sera from patients did not correlate with levels of immune complexes or with antilymphocyte antibodies. Some patients had adherent cells which inhibited NK function. Addition of either indomethacin or catalase partially restored NK activity in such patients, indicating that both prostaglandins and hydrogen peroxide play a role in suppression. These data suggest that multiple mechanisms are involved in the defective NK activity seen in patients with Sjögren's syndrome. The reduction of NK activity in Sjögren's syndrome may contribute to the increased incidence of lymphoid malignancy.

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