People with Parkinson’s disease or rheumatoid arthritis are invited to take part in research at Charles Sturt University (CSU) to investigate the role of red blood cells in neutralising free radicals, chemicals derived from breaking down oxygen in the blood that can damage the body. CSU PhD student with the School of Community Health, Ms Di Hughes, is looking at the shape and biochemistry of red blood cells which are critical for delivering oxygen to the body. “Cell shape is affected by oxidative stress, which is the balance between free radicals and antioxidants which neutralise free radicals. We want to study the levels of antioxidants, free radicals and resulting inflammation in people with these diseases,” Ms Hughes said. “Ultimately, this research could help understand the role of oxidative stress and antioxidants in Parkinson's disease and rheumatoid arthritis.” After an initial discussion with Ms Hughes, which includes a medical questionnaire, accepted participants can attend the Health Skills ward at Thurgoona to give blood and urine samples which will be analysed for free radicals, antioxidants and the shape of red blood cells.