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Researchers develop blood tests to diagnose fibromyalgia

Researchers in the United States have potentially developed a fibromyalgia blood test to accurately diagnose the disease.

An estimated 4 million adults in the United States have fibromyalgia, with women four-to-nine times more likely than men to be diagnosed.

Fibromyalgia is a chronic condition that causes widespread pain throughout the body. People with fibromyalgia may also suffer from increased sensitivity to pain, fatigue, depression, and muscle stiffness.

Fibromyalgia can occur after a traumatic event such as surgery, physical trauma, or significant psychological stress. It can also occur gradually over time with no single event triggering the onset.

This contributes to the difficulties of diagnosing the disease and challenges in treating it as well. There is no cure for fibromyalgia.

Treatment includes a variety of medications, including antidepressants and opioids (strong and addictive painkillers) which can help control symptoms. Lifestyle interventions such as relaxation, stress reduction, and exercise can also help. There is evidence that opioids often cause fibromyalgia to get worse rather than helping patients to feel better. With approximately 40% of patients in pain clinics on opioids who meet the criteria for fibromyalgia, this is of concern.

Three in four people with fibromyalgia are misdiagnosed

Approximately three in four people with fibromyalgia are misdiagnosed. Previous studies indicate that people with fibromyalgia wait, on average, five years between the onset of symptoms and an accurate diagnosis. A fibromyalgia blood test that could provide a reliable and fast diagnosis is an important discovery for patients who suffer from this frequently misdiagnosed or underdiagnosed disease.

Misdiagnosis or underdiagnosis of fibromyalgia can leave patients without proper care to manage their chronic pain and fatigue. Current diagnosis of fibromyalgia relies on patient-reported information on symptoms and a physical evaluation of the patient’s pain. There is no easy-to-use or clear-cut tool available to rapidly diagnose a patient.

Developing a faster method to diagnose fibromyalgia

Researchers at Ohio State University in the United States recently conducted a study to develop a rapid biomarker-based method to diagnose fibromyalgia.

They used vibrational spectroscopy to differentiate patients with fibromyalgia from patients with related diseases including rheumatoid arthritis, osteoarthritis, and systemic lupus erythematosus based on metabolites found to be associated with each disease.

Their findings were published in the Journal of Biological Chemistry.

The study included 50 participants who had been diagnosed with fibromyalgia, 29 with rheumatoid arthritis, 19 with osteoarthritis, and 23 with lupus. Blood samples from each participant were analyzed using vibrational spectroscopy. This technique measures the energy level of molecules in a sample.

A baseline pattern for diagnosing each disease was developed by analyzing blood samples from the participants of whom researchers knew the disease status. Using these patterns, the researchers then evaluated the remaining blood samples of participants who did not know the diagnosis.

Clear patterns from blood samples set fibromyalgia patients apart from other diseases

The results showed that the blind analysis of every participant whose disease status was unknown by the researchers was accurately determined based on the molecular signature observed in their blood samples.

There were clear patterns that consistently set blood samples from fibromyalgia patients apart from the other diseases. The researchers found evidence that this technique could also potentially determine the severity of fibromyalgia for each patient.

Given the reproducibility of the metabolic patterns observed, this study brings scientists a step closer to developing a fibromyalgia blood test for the fast and simple diagnosis of the disease. As described by the researchers, this “metabolic fingerprint” of fibromyalgia could also help with the development and discovery of targeted treatments.

Researchers aim to have the blood test available within five years

This is an exciting turning point for the care of fibromyalgia patients. It has the potential to help with disease recognition by confirming that a patient’s symptoms are real, ruling out other diseases, and helping guide doctors to provide the appropriate treatment.

This is important since there are still some skeptics of fibromyalgia, although most physicians do not question its existence.

Large-scale clinical trials are required to validate these results and show the research is replicable in a more diverse population. The goal of the researchers is to have this test available for use within five years. Rapid diagnosis using a fibromyalgia blood test could mean a better quality of life for people living with this chronic disease.

References:

  1. Hackshaw KV, Aykas DP, Sigurdson GT, Plans M, Madiai F, Yu L, Buffington CAT, Giusti MM, Rodriguez-Saona L. Metabolic fingerprinting for diagnosis of fibromyalgia and other rheumatologic disorders. J Biol Chem. 2019 Feb15;294(7):2555-2568. doi: 10.1074/jbc.RA118.005816. Epub 2018 Dec 6.
  2. Experimental blood test accurately spots fibromyalgia. EurekAlert website https://www.eurekalert.org/pub_releases/2019-03/osu-ebt031519.php. Accessed April 4, 2019.
Lacey Hizartzidis PhD
Lacey Hizartzidis PhD
Lacey has a Ph.D. in Medicinal Chemistry from the University of Newcastle in Australia. Her research investigated the use of flow chemistry to synthesize potential anti-cancer agents. Having authored a number of articles published in international journals, she has developed a love for writing. Coupled with her passion for science and health, Lacey truly enjoys writing for Medical News Bulletin and helping people to understand the important and exciting scientific research being conducted around the world. With an adventurous spirit, Lacey also enjoys travelling the world, living a healthy life and helping others to do so as well.
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