PMID: 15348924Sep 7, 2004Paper

Persistent expression of mitogenic/transforming factors at the site of failed orthopaedic implants: the impact on immune reactivity

Journal of Materials Science. Materials in Medicine
J Bainbridge, N Al-Saffar

Abstract

The response to wear particles from orthopaedic implants can lead to inflammation, osteolytic lesions, and aseptic loosening. To gain an insight into the development of this pathogenetic process, immunohistochemical techniques were used to identify the expression and tissue distribution of the potent cell mitogen epidermal growth factor (EGF), and the epidermal growth factor receptor (EGF-R) at the site of bone erosion in 30 patients with clinically failed orthopaedic implants. The results showed a large proportion of the macrophage subsets (Mphi) which expressed EGF and EGF-R, also contained wear particles, indicating their expression is a consequence of Mphi phagocytosis of implant material. The surface membrane expression of EGF-R on fusing Mphi suggests its presence is fundamental to the formation of bone-resorbing multi-nucleated giant cells, and the development of osteolysis. Additionally, there is increasing evidence of the long-term systemic spread of wear particles and their accumulation at distal sites including lymph nodes, liver, and spleen. Elevated expression of mitogenic factors in response to wear particles may result in deviation from normal cell growth and regulation, resulting in changes to immune cell functi...Continue Reading

Citations


❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.