open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2018-10-16
Submitted: 2018-09-12
Accepted: 2018-09-25
Get Citation

Expression of matrix metalloproteinase-9 and tumour necrosis factor-alpha in the synovial cells of patients with meniscus tears

Ramazan Atiç, Engin Deveci
DOI: 10.5603/FM.a2018.0096
·
Pubmed: 30371936

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2018-10-16
Submitted: 2018-09-12
Accepted: 2018-09-25

Abstract

A meniscus tear is a serious trauma that develops during swinging motion of the fixed foot. Meniscus tears may also be accompanied by divergence of the lateral ligaments of the knee joint. We enrolled 45 males and 35 females with meniscal tears in the present study. Patients with local joint pain, swelling, difficulty climbing stairs, patellar creeping, difficulties with daily living activities, local pain on palpation, and walking and running complaints, were included. We performed preoperative magnetic resonance imaging. Synovial fluid (5 mL) was aspirated from the lateral suprapatellar pouch of each knee with meniscal pain with the patient in the supine position. Blood samples were taken and biochemical parameters were analysed. The Harris haematoxylin and eosin staining protocol was used to evaluate tissue samples, and the levels of anti-matrix metalloproteinase (MMP)-9 and anti-tumour necrosis factor (TNF)-α antibodies were measured immunohistochemically. Increased numbers of lymphocytes and neutrophils, hyperplastic erythrocytes, and fibroblasts were observed in the joint fluid of females. In males, the fibroblast cells were hyperplastic and plasma cell numbers were increased. MMP-9 expression was elevated in plasma cells, fibroblasts, and neutrophils; and TNF-α expression was observed in lymphocytes and polymorphic nucleated cells. We suggest that increased fluid levels in inflamed joints with meniscal tears, and the associated inflammation, disrupt the cartilage matrix and elevate the production of cytokines such as TNF-α and MMP-9 via release from cells such as fibroblasts that synthesise these mediators. Anti-TNF-α treatment may prevent meniscal tears and prevent or slow the development of osteoarthritis..

Abstract

A meniscus tear is a serious trauma that develops during swinging motion of the fixed foot. Meniscus tears may also be accompanied by divergence of the lateral ligaments of the knee joint. We enrolled 45 males and 35 females with meniscal tears in the present study. Patients with local joint pain, swelling, difficulty climbing stairs, patellar creeping, difficulties with daily living activities, local pain on palpation, and walking and running complaints, were included. We performed preoperative magnetic resonance imaging. Synovial fluid (5 mL) was aspirated from the lateral suprapatellar pouch of each knee with meniscal pain with the patient in the supine position. Blood samples were taken and biochemical parameters were analysed. The Harris haematoxylin and eosin staining protocol was used to evaluate tissue samples, and the levels of anti-matrix metalloproteinase (MMP)-9 and anti-tumour necrosis factor (TNF)-α antibodies were measured immunohistochemically. Increased numbers of lymphocytes and neutrophils, hyperplastic erythrocytes, and fibroblasts were observed in the joint fluid of females. In males, the fibroblast cells were hyperplastic and plasma cell numbers were increased. MMP-9 expression was elevated in plasma cells, fibroblasts, and neutrophils; and TNF-α expression was observed in lymphocytes and polymorphic nucleated cells. We suggest that increased fluid levels in inflamed joints with meniscal tears, and the associated inflammation, disrupt the cartilage matrix and elevate the production of cytokines such as TNF-α and MMP-9 via release from cells such as fibroblasts that synthesise these mediators. Anti-TNF-α treatment may prevent meniscal tears and prevent or slow the development of osteoarthritis..

Get Citation

Keywords

meniscus tear, synovial cells, MMP-9, TNF-alpha

Supplementary Files (2)
English Certificate Letter
Download
12KB
Biostatistic statement
Download
117KB
About this article
Title

Expression of matrix metalloproteinase-9 and tumour necrosis factor-alpha in the synovial cells of patients with meniscus tears

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2018-10-16

DOI

10.5603/FM.a2018.0096

Pubmed

30371936

Keywords

meniscus tear
synovial cells
MMP-9
TNF-alpha

Authors

Ramazan Atiç
Engin Deveci

Important: This website uses cookies. More >>

The cookies allow us to identify your computer and find out details about your last visit. They remembering whether you've visited the site before, so that you remain logged in - or to help us work out how many new website visitors we get each month. Most internet browsers accept cookies automatically, but you can change the settings of your browser to erase cookies or prevent automatic acceptance if you prefer.

By  "Via Medica sp. z o.o." sp.k., Świętokrzyska 73, 80–180 Gdańsk, Poland

tel.:+48 58 320 94 94, faks:+48 58 320 94 60, e-mail:  viamedica@viamedica.pl