Production of cartilage degrading activity by human synovial tissues.

نویسندگان

  • M F Brown
  • B L Hazleman
  • J T Dingle
  • D J Dandy
  • A H Murley
چکیده

Human synovial tissues have been assayed for the production of cartilage degrading activity (CDA). This activity is thought to be homologous with catabolin/interleukin 1 (IL1) produced by porcine synovium and leucocytes and by human leucocytes. The CDA of 26 rheumatoid (RA) and 41 non-rheumatoid synovia was measured on a dry weight basis. The rheumatoid synovia showed a threefold increase in activity over the non-rheumatoid, but there was no significant overall difference on a deoxyribonucleic acid (DNA) basis. The rheumatoid synovia appeared to consist of two populations; in over half the samples CDA was not related to cellularity, but eight patients had a high CDA and a high cellularity.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

In vitro model for the analysis of synovial fibroblast-mediated degradation of intact cartilage

INTRODUCTION Activated synovial fibroblasts are thought to play a major role in the destruction of cartilage in chronic, inflammatory rheumatoid arthritis (RA). However, profound insight into the pathogenic mechanisms and the impact of synovial fibroblasts in the initial early stages of cartilage destruction is limited. Hence, the present study sought to establish a standardised in vitro model ...

متن کامل

Destruction of articular cartilage by alpha 2 macroglobulin elastase complexes: role in rheumatoid arthritis.

OBJECTIVE Neutrophil elastase accounts for the ability of some fresh rheumatoid synovial fluids to degrade cartilage matrix in vitro. The aim of this study was to determine if enzyme activity could result from depletion of synovial fluid inhibitors or protection of the enzyme from inhibition. METHODS The ability of synovial fluids to inhibit porcine pancreatic elastase was investigated togeth...

متن کامل

Secretion of an articular cartilage proteoglycan-degrading enzyme activity by murine T lymphocytes in vitro.

Destruction of articular cartilage is the hallmark of inflammatory arthritides. Enzymes elaborated by mononuclear cells infiltrating the synovium mediate, in part, the degradation of the cartilage extracellular matrix. Since mononuclear cells are the dominant cell type found in chronic inflammatory synovitis, we investigated whether interaction of immune mononuclear cells with antigen initiated...

متن کامل

Neutral protease from the polymorphonuclear leucocytes of human rheumatoid synovial fluid.

1. The cartilage-proteoglycan-degrading activity of synovial fluid cells from rheumatoid patients is primarily due to neutral protease activity; hyaluronidase does not contribute significantly. Evidence for these conclusions is adduced from electrophoresis of degradation products, from comparison of the proteoglycan-degrading and protease activities of extracts and from the effects of activator...

متن کامل

Gene expression and activity of cartilage degrading glycosidases in human rheumatoid arthritis and osteoarthritis synovial fibroblasts

INTRODUCTION Similar to matrix metalloproteinases, glycosidases also play a major role in cartilage degradation. Carbohydrate cleavage products, generated by these latter enzymes, are released from degrading cartilage during arthritis. Some of the cleavage products (such as hyaluronate oligosaccharides) have been shown to bind to Toll-like receptors and provide endogenous danger signals, while ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Annals of the rheumatic diseases

دوره 46 4  شماره 

صفحات  -

تاریخ انتشار 1987