PMID: 9547002Apr 18, 1998Paper

Synovial inflammatory cells captured 131I-beta 2-microglobulin in patients with dialysis related amyloidosis

Amyloid : the International Journal of Experimental and Clinical Investigation : the Official Journal of the International Society of Amyloidosis
J J KazamaF Gejyo

Abstract

Dialysis related amyloidosis (DRA) is a major complication of long term hemodialysis therapy. It is well recognized that scintigraphic study using radioisotope-labeled beta 2-microglobulin (beta 2M) as a tracer is a sensitive and specific technique to diagnose DRA non-invasively. The aim of this study is to clarify the mechanism of 131I-beta 2M accumulation around the amyloid tissue. Three dialysis patients with carpal tunnel syndromes were examined for consecutive 131I-beta 2M scintigraphies every 24 hours for 3 days till the carpal tunnel synovectomy. Removed synovial tissues were processed for histological study. The scintigraphic study demonstrated tracer accumulations in the joints involved with DRA and the intensity increased in a time dependent fashion. Microscopic observations revealed many inflammatory cells presenting CD68-monocytes/macrophages antigen infiltrated into the synovial tissues. 131I-beta 2M was evident in the cytoplasm of the infiltrating cells, while no radioactivity was detected above background in the amyloid tissues. In conclusion, the tracer accumulations observed in the 131I-beta 2M scintigraphic studies were the consequence of circulating beta 2M assimilated by the infiltrating monocytes/macrophage...Continue Reading

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Citations

Dec 28, 1999·Amyloid : the International Journal of Experimental and Clinical Investigation : the Official Journal of the International Society of Amyloidosis·M NyboS E Svehag
Mar 27, 2001·Seminars in Dialysis·M KettelerJ Floege
Feb 28, 2006·Journal of Bone and Mineral Metabolism·Junichiro James KazamaFumitake Gejyo
Dec 19, 2003·Advances in Renal Replacement Therapy·James F WinchesterNathan W Levin
Sep 29, 2001·American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation·J J KazamaF Gejyo

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