New research shows that a high level of C-reactive protein (CRP), a marker for inflammation in the blood, is associated with brain changes that are linked to problems with executive thinking skills. The study is published in the March 30, 2010, issue of Neurology®, the medical journal of the American Academy of Neurology.
For the study, scientists examined 447 stroke and dementia-free people with an average age of 63.
Participants underwent MRI brain scans such as diffusion tensor imaging (DTI), a technique that measures water molecule movements in the brain. They also completed tests that measured verbal memory, word fluency and executive function, the process in the brain that allows for planning, decision making and selection of appropriate behavior.
>The study found that higher levels of CRP led to worse performance in executive function. Higher levels of the protein also affected the frontal lobe of the brain, where some motor functions take place. Motor skills, however, were not measured in the study. Other areas of cognition, such as memory and language skills, showed no association with CRP.