Volume 31, Issue 8 pp. 937-946
Article
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Light and electron microscopic studies on the synovial membrane in reiter's syndrome.

H. Schumacher Ralph Jr. MD

Corresponding Author

H. Schumacher Ralph Jr. MD

Professor of Medicine

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

Director, Arthritis-Immunology Center, Veterans Administration Medical Center (151K), University and Woodland Avenues, Philadelphia, PA 19104Search for more papers by this author
Sathish Magge MD

Sathish Magge MD

Research Fellow

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

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P. Varghese Cherian PhD

P. Varghese Cherian PhD

former Research Assistant Professor of Medicine

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

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Joseph Sleckman MD

Joseph Sleckman MD

Former Rheumatology Fellow

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

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Susan Rothfuss

Susan Rothfuss

Research Technician

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

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Gilda Clayburne

Gilda Clayburne

Research Technician

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

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Marie Sieck

Marie Sieck

Research Technician

University of Pennsylvania School of Medicine, the Arthritis-Immunology Center of the Veterans Administration Medical Center, and the Medical College of Pennsylvania, Philadelphia, Pennsylvania.

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First published: August 1988
Citations: 165

Abstract

Studies by light microscopy on synovium obtained from 11 patients with Reiter's syndrome during the first month of an episode showed proliferation of synovial lining cells, polymorphonuclear neutrophils among the synovial lining cells, increased surface fibrin, and vascular congestion. Biopsy specimens taken later showed vascular congestion and still proliferated synovial lining cells, fewer polymorphonuclear neutrophils in some, and a tendency toward increased infiltration with lymphocytes and plasma cells. Electron microscopy of samples from 8 patients during the first month of disease activity showed occlusion of vessels by platelets in 4, and fibrin or dense granular material in the vessel walls in 4. Five of the patients with arthritis of less than 4 weeks duration had unidentified intracellular and extracellular particles; some of these were highly suggestive of Chlamydia. No such particles were noted in samples from patients with more chronic cases. Using an antibody to Chlamydia trachomatis and the peroxidase-antiperoxidase technique, immunocytochemistry showed reaction product in synovial macrophages in 2 patients with arthritis of less than 4 weeks duration, but not in the 1 patient studied who had more chronic disease. These studies provide support for dramatic synovial vascular injury consistent with that caused by endotoxin and the presence of chlamydial antigen in synovial macrophages, at least in the early phases of synovitis.

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