Navigation Links
Does Anti-TNF Therapy Control Ankylosis ?

Arthritis is a condition resulting from inflammation of joints. It causes swelling and pain resulting in limited movement.//

Spondylarthritis (SpA), ankylosing spondylitis (AS), psoriatic arthritis (PsA), and inflammatory bowel disease are all associated rheumatic diseases collectively known as "spondyloarthropathies". Aside from chronic inflammation, these conditions are all characterized by ankylosis, stiffness and fusion of bone in the spine and peripheral joints. Ankylosis is an incapacitating condition that ultimately results in loss of spinal mobility and function severely affecting a person's quality of life.

Currently, inhibition of tumor necrosis factor á (TNFá) is the most effective strategy for controlling the painful symptoms of SpA and slowing vertebral joint destruction. But does anti-TNF therapy do anything to reduce the incidence or severity of ankylosis?

To answer this critical question, a quartet of researchers led by Dr. Frank P. Luyten, Division of Rheumatology, University Hospitals, Leuven, Belgium, tested the effectiveness of etanercept, an established TNF receptor, on animal models of arthritis.

Their findings, highlighted in the February 2007 issue of Arthritis & Rheumatism (http://www.interscience.wiley.com/journal/arthritis), cast doubts on the feasibility of preventing joint and spine ankylosis with anti-TNF strategies while shedding light on the process of SpA.

A sample of male mice with spontaneous arthritis were caged together and observed from the age of 10 weeks. From week 12 to week 25, the mice were treated twice weekly with etanercept, in a strength comparable to standard dosage for human patients, or a placebo. Mice were also scored twice weekly for signs of arthritis, including cartilage formation, bone formation, and joint ankylosis. The mice were killed at age 25 weeks, autopsied, and analyzed, through cell population staining, for the presence of TNFá.

In a complementary experiment, another sample of mice was induced with arthritis, using methylated bovine serum albumin. Four days later, these mice were given a single injection of etanercept. Three days later, on day seven, they were killed. Signs of arthritis were assessed and graded for cartilage destruction and bone erosion.

For the mice with induced arthritis, etanercept had a significant impact on disease severity, inhibiting inflammation and cartilage and bone destruction. For the mice with spontaneous arthritis, however, etanercept proved no more effective than placebo at inhibiting new cartilage or bone formation or ankylosis. What's more, TNFá-positive cells were observed in the joint capsule, adjacent blood vessels and in new cartilage.

"Our observations strengthen our hypothesis that new bone formation in SpA is clinically relevant and largely independent of inflammation," Dr. Luyten states. "Long-term results from clinical trials are required to corroborate this hypothesis in patients with SpA," he acknowledges, "and to define whether the process of ankylosis should become a separate therapeutic target."



Source-Eurekalert
RI
'"/>




Related medicine news :

1. Cancer Doctors Okays Controversial Prostate Therapy
2. Consensus on "Combination Therapy" for Breast Cancer
3. Gene Therapy shows promise in treating Hemophilia
4. "Make AIDS Therapy affordable" - Physicians demand
5. Hormone replacement Therapy a headache
6. Simple Therapy
7. Therapy for stopping the spread of cancer cells
8. Gene Therapy Destroys Pancreatic Cancer Cells
9. Letrozole Beats Tamoxifen in Breast Cancer Therapy
10. Garlic Supplements Impede HIV Therapy
11. Gene Therapy For Cystic Fibrosis
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/20/2017)... NY (PRWEB) , ... January 20, 2017 , ... ... VW+ 001 and its sugar-free alternative VW+ 002. The drinks have been produced ... with optimal conditions to perform during your workout. , After a successful launch ...
(Date:1/20/2017)... ... ... fine examination of how God handles sin, including how to let go of lingering guilt ... over ten long years has been waiting to release this powerful insight about forgiveness that ... serving the Lord for over twenty years, and he has been preaching and teaching the ...
(Date:1/20/2017)... ... 2017 , ... “Knowledge is God’s Lighthouse”: a moving and colorful collection ... is the creation of published author, Gene Gaapf, a retired truck driver, and a ... have been writing since high school and have many different titles,” Gaapf mentions about ...
(Date:1/19/2017)... ... January 19, 2017 , ... ... an On-demand E-learning system for Clinical and Regulatory education for Physicians, Physician ... on Aerolib`s successful education methodology of Disease Specific Documentation Improvement. , The ...
(Date:1/19/2017)... ... January 19, 2017 , ... This month, the CEO and ... name of their drug rehab center in Delray Beach, Florida has been changed from ... only stars such as Philip Seymour Hoffman and Chris Farley are dying from heroin ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... BOSTON , Jan. 19, 2017  Stealth BioTherapeutics ... therapeutics to treat mitochondrial dysfunction, today announced new additions ... , M.D., as Chief Medical Officer, and Daniel ... Stealth announced that Jim Carr , Pharm.D. has ... "We are pleased to welcome Doug and Daniel ...
(Date:1/19/2017)... , Jan. 19, 2017  Abaxis, Inc. (NasdaqGS: ... blood analysis instruments and consumables for the medical and ... discuss its financial results for the third quarter fiscal ... be at 4:15 p.m. ET on Thursday, January 26, ... third quarter fiscal year 2017 after the market closes ...
(Date:1/19/2017)... , January 19, 2017 ... announced that the U.S. Food and Drug Administration (FDA) ... a New Drug Application (NDA) for SHP465, a long-acting, ... as a potential once-daily treatment for Attention-Deficit/Hyperactivity Disorder (ADHD). ... or around June 20, 2017, the designated Prescription Drug ...
Breaking Medicine Technology: