PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

How effective is total knee replacement in patients with rheumatoid arthritis?

2015-07-20
(Press-News.org) Studies that have assessed the effects of total knee replacement on quality of life are scarce and have been almost exclusively limited to patients with osteoarthritis, even though rheumatoid arthritis is the most common inflammatory arthritis for which the surgery is indicated.

In a new study that assessed the effects of total knee replacement in rheumatoid arthritis patients versus osteoarthritis patients, researchers found that the surgery is highly effective in reducing knee pain and also provides benefits in other subjective quality of life indices in patients with rheumatoid arthritis. Improvements were not as great as those experienced by osteoarthritis patients, however.

The investigators concluded that total knee replacement can serve as a "time machine" via which patients can return to a less disabled lifestyle, before the arthritic process catches up.

"A new knee can give osteoarthritis patients 10 to 20 years of painless use, whereas rheumatoid arthritis continues to affect the joint soon afterward. It's an important and effective treatment, but patients with rheumatoid arthritis shouldn't expect the same, often-dramatic results experienced by their osteoarthritis counterparts," said Dr. Kaleb Michaud, senior author of the Arthritis & Rheumatology study. "You've gotten rid of a knee plagued by arthritis, not the arthritis itself. Still, it's an important option that can dramatically improve the patient's quality of life."

INFORMATION:



ELSE PRESS RELEASES FROM THIS DATE:

Stanford scientists see iron-containing inflammatory cells in Alzheimer's brains

2015-07-20
Examining post-mortem tissue from the brains of people with Alzheimer's disease, Stanford University School of Medicine investigators identified what appear to be iron-containing microglia -- specialized scavenger cells that sometimes become inflammatory -- in a particular part of the hippocampus, a key brain structure whose integrity is critical to memory formation. In post-mortem brain tissue from people not diagnosed with Alzheimer's, neither the iron deposits nor the scavenger cells engulfing them were present in that brain region. The findings, recounted in a ...

What is a good looking penis?

2015-07-20
In a new study, women considered the position and shape of the urethral opening to be the least important aspects of a penis' appearance. They also perceived the genitals of men who underwent surgery to treat distal hypospadias--a congenital condition in which the opening of the urethra is on the underside of the penis--to be as normal-looking as nonaffected, circumcised genitals. "The information may help prevent the development of shame or impaired genital perceptions about penile appearance," said Dr. Norma Ruppen, lead author of The Journal of Sexual Medicine study. INFORMATION: ...

Alcohol consumption linked to lower disability in patients with chronic pain

2015-07-20
In a study of 2239 individuals with chronic widespread pain, the key feature of fibromyalgia, those who regularly consumed alcohol had lower levels of disability than those who never or rarely drank. Those who drank 21 to 35 units of alcohol per week were 67% less likely than never drinkers to experience disability. (One unit of alcohol is a half pint of average strength beer/lager, one small glass of wine, or one single measure of spirits.). "Although we cannot say that alcohol consumption causes less disability among people with chronic widespread pain, the observed ...

Michelangelo likely used mathematics when painting the creation of Adam

2015-07-20
New research provides mathematical evidence that Michelangelo used the Golden Ratio of 1.6 when painting The Creation of Adam on the ceiling of the Sistine Chapel. The Golden Ratio is found when you divide a line into two parts so that the longer part divided by the smaller part is equal to the whole length divided by the longer part. The Golden Ratio has been linked with greater structural efficiency and has puzzled scientists for centuries due to its frequent occurrence in nature--for example in snail shells and flower petals. The Golden Ratio can also be found in a ...

Fossil fuel emissions will complicate radiocarbon dating, warns scientist

2015-07-20
Fossil fuel emissions could soon make it impossible for radiocarbon dating to distinguish new materials from artefacts that are hundreds of years old. Carbon released by burning fossil fuels is diluting radioactive carbon-14 and artificially raising the radiocarbon 'age' of the atmosphere, according to a paper published today (Monday 20 July 2015) in the journal PNAS. Radiocarbon measurements have a range of uses, from analysing archaeological finds, to detecting fraudulent works of art, to identifying illegal ivory trading, to assessing the regeneration of brain cells ...

How music alters the teenage brain

2015-07-20
Music enhances the teenage brain's response to sound; sharpens language skills Band class had larger effect on brain than fitness-based ROTC training Results highlight music's place in the high school curriculum Kraus: 'Music may engender what educators refer to as learning to learn' EVANSTON, Ill. --- Music training, begun as late as high school, may help improve the teenage brain's responses to sound and sharpen hearing and language skills, suggests a new Northwestern University study. The research, to be published the week of July 20 in the Proceedings ...

Novel monoclonal antibodies show promise for Alzheimer's disease treatment

2015-07-20
Scientists at NYU Langone Medical Center's Center for Cognitive Neurology have evidence that monoclonal antibodies they developed may provide the blueprint for effective treatments for Alzheimer's disease and other neurodegenerative diseases, such as Parkinson's disease. A team led by Fernando Goni, PhD, an adjunct associate professor of Neurology, and Thomas Wisniewski MD, director of the Center for Cognitive Neurology at NYU Langone, showed that a novel class of monoclonal antibodies successfully targeted proteins that change shape and misfold, becoming toxic and triggering ...

Infants use expectations to shape their brains

2015-07-20
Infants can use their expectations about the world to rapidly shape their developing brains, researchers have found. A series of experiments with infants ages 5 to 7 months has shown that portions of babies' brains responsible for visual processing respond not just to the presence of visual stimuli, but also to the mere expectation of visual stimuli, according to the researchers from Princeton University, the University of Rochester and the University of South Carolina. That type of sophisticated neural processing was once thought to happen only in adults and not infants, ...

New insights into biofilm formation could lead to better therapies, but mysteries remain

2015-07-20
Washington, DC - July 20, 2015 - Biofilms are tough, opportunistic, highly antibiotic resistant bacterial coatings that form on catheters and on medical devices implanted within the body. University of Maryland investigators have now shown that a "messenger molecule" produced by the opportunistic human pathogen, Pseudomonas aeruginosa, encourages bacteria to colonize catheters in the bladders of laboratory mice, where they form biofilms. The research appears July 20th in the Journal of Bacteriology, a publication of the American Society for Microbiology. Normally, in ...

Gut worms protect babies' brains from inflammation

2015-07-20
DURHAM, N.C. -- A Duke University study in rats finds that gut worms can protect babies' brains from long-term learning and memory problems caused by newborn infections. Baby rats with tapeworms avoided the brain inflammation that plagued worm-free rats after exposure to immune triggers in adulthood. What's more, the benefits began early, while still in the womb. Expectant mother rats with tapeworms passed similar protection on to their worm-free pups, the researchers found. The findings could point to new ways to treat or prevent the chronic brain inflammation ...

LAST 30 PRESS RELEASES:

ASU researchers to lead AAAS panel on water insecurity in the United States

ASU professor Anne Stone to present at AAAS Conference in Phoenix on ancient origins of modern disease

Proposals for exploring viruses and skin as the next experimental quantum frontiers share US$30,000 science award

ASU researchers showcase scalable tech solutions for older adults living alone with cognitive decline at AAAS 2026

Scientists identify smooth regional trends in fruit fly survival strategies

Antipathy toward snakes? Your parents likely talked you into that at an early age

Sylvester Cancer Tip Sheet for Feb. 2026

Online exposure to medical misinformation concentrated among older adults

Telehealth improves access to genetic services for adult survivors of childhood cancers

Outdated mortality benchmarks risk missing early signs of famine and delay recognizing mass starvation

Newly discovered bacterium converts carbon dioxide into chemicals using electricity

Flipping and reversing mini-proteins could improve disease treatment

Scientists reveal major hidden source of atmospheric nitrogen pollution in fragile lake basin

Biochar emerges as a powerful tool for soil carbon neutrality and climate mitigation

Tiny cell messengers show big promise for safer protein and gene delivery

AMS releases statement regarding the decision to rescind EPA’s 2009 Endangerment Finding

Parents’ alcohol and drug use influences their children’s consumption, research shows

Modular assembly of chiral nitrogen-bridged rings achieved by palladium-catalyzed diastereoselective and enantioselective cascade cyclization reactions

Promoting civic engagement

AMS Science Preview: Hurricane slowdown, school snow days

Deforestation in the Amazon raises the surface temperature by 3 °C during the dry season

Model more accurately maps the impact of frost on corn crops

How did humans develop sharp vision? Lab-grown retinas show likely answer

Sour grapes? Taste, experience of sour foods depends on individual consumer

At AAAS, professor Krystal Tsosie argues the future of science must be Indigenous-led

From the lab to the living room: Decoding Parkinson’s patients movements in the real world

Research advances in porous materials, as highlighted in the 2025 Nobel Prize in Chemistry

Sally C. Morton, executive vice president of ASU Knowledge Enterprise, presents a bold and practical framework for moving research from discovery to real-world impact

Biochemical parameters in patients with diabetic nephropathy versus individuals with diabetes alone, non-diabetic nephropathy, and healthy controls

Muscular strength and mortality in women ages 63 to 99

[Press-News.org] How effective is total knee replacement in patients with rheumatoid arthritis?