Laboratory scientists have observed that RA and other diseases can cause multiple systems within the body to age more rapidly than expected. Cells affected by diseases begin to show signs of what's called accelerated aging -- damage at the molecular level resulting in poorer function.
Mayo researchers attending the American College of Rheumatology Annual Meeting will share preliminary findings that suggest increased mortality among people with RA is consistent with the concept of accelerated aging.
The Mayo research team conducted a population-based study that included 393 people diagnosed with RA. Examining medical records for the RA patients, Mayo researchers recorded the subjects' age at death and underlying cause of death. They compared the data from RA patients to expected survival data for people with similar birth dates and genders from the general population (obtained from the National Center for Health Statistics).
Mayo researchers then applied a novel mathematical tool to analyze the mortality data -- an accelerated failure time model. Doing this allowed researchers to estimate an "acceleration factor" that quantifies the rate of aging occurring among the study subjects with RA.
Significant findings: As expected, the observed survival rate for people with RA was consistently less than the expected survival rates for people in the general population. Researchers estimated that the RA patients in the study group aged at approximately 1.25 times the rate of people in the general population. Another way to express this finding is that during each 10-year time span, people with RA, in effect, age 12.5. "We've known for decades that the mortality rate among people with rheumatoid arthritis is higher, and that these patients are at increased risk for heart and lung disease," explains lead researcher and Mayo epidemiologist Sherine Gabriel, M.D. "With this study, we've now applied a mathematical model that shows consistency between our observed mortality rates and our understanding of the concept of accelerated aging."
Dr. Gabriel explains that new knowledge about this acceleration factor also underscores the need for people with RA to be aware of their increased health risks and to seek medical care that addresses their total health.
"Because rheumatoid arthritis is chronic and can be so consuming, patients and their doctors sometimes pay less attention to other issues, like cardiovascular health," notes Dr. Gabriel. "Studies like these remind us that early diagnosis and intervention are extremely important for these patients."
Future research likely will focus on establishing a closer link between the Mayo findings and laboratory studies of cellular aging.
A promising target for kidney fibrosis
21.04.2017 | Brigham and Women's Hospital
Stem cell transplants: activating signal paths may protect from graft-versus-host disease
20.04.2017 | Technische Universität München
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
25.04.2017 | Earth Sciences
25.04.2017 | Life Sciences
25.04.2017 | Earth Sciences