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Healthy Children Of Alzheimer Patients Show Early Brain Changes

Date:
July 30, 2008
Source:
Medical College of Wisconsin
Summary:
Children of Alzheimer's patients who are carriers of a genetic risk factor for Alzheimer's disease have neurological changes that are detectable long before clinical symptoms may appear.

Medical College of Wisconsin researchers in Milwaukee have reported that children of Alzheimer's patients who are carriers of a genetic risk factor for Alzheimer's disease have neurological changes that are detectable long before clinical symptoms may appear.

Functional MRI brain imaging revealed that these symptomless carriers of the APOE-4 gene demonstrated significantly reduced functional brain connectivity between the hippocampus and the posterior cingulated cortex, two important brain structures for memory processing. These structures are relevant for information acquisition, filtering and sorting.

The study, conducted at Froedtert Hospital, was led by Shi Jiang Li, Ph.D., professor of biophysics, and was presented at the Alzheimer's Association International Conference on Alzheimer's disease in Chicago, July 29th. "Just as if cancer could be detected when there were only a few cells, decades before it was evident, the advantage of identifying those at great risk for having Alzheimer's would be of tremendous value in development of interventional therapies," says Dr. Li.

The researchers studied 28 neurologically-normal subjects, between ages 45 and 65. Twelve carried the APOE-4 gene and 16 did not. The two groups showed no significant difference in age, educational level, or neuropsychological performances. All subjects received fMRI scans. For each subject, functional connectivity between the two brain structures was measured in a resting state.

Results showed that functional connectivity in the non APOE-4 carriers was approximately 65 percent better than that of the carriers.

Other members of the research team were Piero Antuono, M.D., professor of neurology, and Zhilin Wu, Ph.D., Chunming Xie, Ph.D., and Jennifer L. Jones, M.S., research associates in the departments of biophysics and neurology.


Story Source:

The above story is based on materials provided by Medical College of Wisconsin. Note: Materials may be edited for content and length.


Cite This Page:

Medical College of Wisconsin. "Healthy Children Of Alzheimer Patients Show Early Brain Changes." ScienceDaily. ScienceDaily, 30 July 2008. <www.sciencedaily.com/releases/2008/07/080729074924.htm>.
Medical College of Wisconsin. (2008, July 30). Healthy Children Of Alzheimer Patients Show Early Brain Changes. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2008/07/080729074924.htm
Medical College of Wisconsin. "Healthy Children Of Alzheimer Patients Show Early Brain Changes." ScienceDaily. www.sciencedaily.com/releases/2008/07/080729074924.htm (accessed October 21, 2014).

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