High blood pressure, evidence of arterial disease and markers of inflammation in the blood in middle age appear more common in individuals whose parents have Alzheimer's disease than in individuals without a parental history of the condition, according to a report in the November issue of Archives of General Psychiatry, one of the JAMA/Archives journals.
Previous twin studies estimate that as much as 60 percent of the risk for Alzheimer's disease is under genetic control, according to background information in the article. Other research has identified several vascular and inflammatory risk factors in midlife that may be associated with the later transition into cognitive decline related to Alzheimer's disease.
Eric van Exel, M.D., Ph.D., of VU University Medical Center, Amsterdam, and colleagues compared some of these vascular and inflammatory factors, such as high blood pressure and levels of pro-inflammatory proteins known as cytokines in the blood, between 206 offspring of 92 families with a history of Alzheimer's disease and 200 offspring of 97 families without a parental history. Researchers measured blood pressure; obtained blood samples to assess genetic characteristics and levels of cholesterol, along with cytokines and other inflammation-related substances; and collected sociodemographic characteristics, medical history and information about diet, exercise and stress levels.