The Society for Women's Health Research (SWHR) and its Interdisciplinary Studies in Sex-Differences (ISIS) Network on Musculoskeletal Health has awarded a group of researchers a $127,000 grant to lead a pilot project to understand whether biological differences between men and women affect the incidence and severity of knee osteoarthritis. Mary I. O'Connor, M.D., chair of the Department of Orthopedic Surgery at Mayo Clinic's campus in Florida, will be the study's principal investigator.
Osteoarthritis, characterized by the breakdown of cartilage in the joint resulting in stiffness and pain, is the most common form of arthritis. It affects approximately 27 million Americans.
"Knee osteoarthritis is a leading cause of disability in the U.S. and women have greater pain and reductions in function and quality of life from this condition than do men," Dr. O'Connor says. "Knee osteoarthritis is also more common in women than men."
While the underlying mechanisms for differences in knee osteoarthritis between men and women are not yet known, recent studies have indicated sex differences at the cellular and molecular levels may influence development of the disease, she says. Answers could provide valuable clues for more effective treatment and possible prevention, Dr. O'Connor says.
The study will examine a variety of human tissues normally discarded during total knee replacement surgery that is performed for severe osteoarthritis. The tissues will be analyzed for possible differences in pain fibers and hormone and vitamin D receptors between female and male patients.
"Our study will be the first to explore if there are true biological differences which result in women having this increased disease burden," Dr. O'Connor says.
"Knee osteoarthritis is a devastating disease and one that may impact women differently than men. SWHR is pleased to have found deserving scientists to take on this research," says Phyllis Greenberger, the society's president and CEO. "This research can benefit the multitudes of women suffering from the constant pain and inflammation of knee osteoarthritis."
VIDEO ALERT: Additional audio and video resources, including excerpts from an interview with Dr. Mary O'Connor are available on the Mayo Clinic News Blog.
The project's co-investigators include Karen Berkley, Ph.D., professor emeritus, Program of Neuroscience at Florida State University; Barbara Boyan, Ph.D., the Price Gilbert, Jr. Chair in Tissue Engineering at Wallace H. Coulter Department of Biomedical Engineering at the Georgia Institute of Technology and Emory University, and associate dean for Research, College of Engineering, Georgia Institute of Technology; and David Hart, Ph.D., Grace Glaum Professor in Arthritis Research, McCaig Institute for Bone & Joint Health, Department of Surgery at the University of Calgary in Alberta, Canada.
About Mayo Clinic
Mayo Clinic is a nonprofit worldwide leader in medical care, research and education for people from all walks of life. For more information, visit www.mayoclinic.org/about/ and www.mayoclinic.org/news2010-jax/5837.html.
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