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The Journal of Alzheimer’s Disease is an international multidisciplinary journal to facilitate progress in understanding the etiology, pathogenesis, epidemiology, genetics, behavior, treatment and psychology of Alzheimer’s disease.
The journal publishes research reports, reviews, short communications, book reviews, and letters-to-the-editor. The journal is dedicated to providing an open forum for original research that will expedite our fundamental understanding of Alzheimer’s disease.
Authors: Bartzokis, George | Lu, Po H. | Tishler, Todd A. | Peters, Douglas G. | Kosenko, Anastasia | Barrall, Katherine A. | Finn, J. Paul | Villablanca, Pablo | Laub, Gerhard | Altshuler, Lori L. | Geschwind, Daniel H. | Mintz, Jim | Neely, Elizabeth | Connor, James R.
Article Type: Research Article
Abstract: Prevalent gene variants involved in iron metabolism [hemochromatosis (HFE) H63D and transferrin C2 (TfC2)] have been associated with higher risk and earlier age at onset of Alzheimer's disease (AD), especially in men. Brain iron increases with age, is higher in men, and is abnormally elevated in several neurodegenerative diseases, including AD and Parkinson's disease, where it has been reported to contribute to younger age at onset in men. The effects of the common genetic variants (HFE H63D and/or TfC2) on brain iron were studied across eight brain regions (caudate, putamen, globus pallidus, thalamus, hippocampus, white matter of frontal lobe, genu, …and splenium of corpus callosum) in 66 healthy adults (35 men, 31 women) aged 55 to 76. The iron content of ferritin molecules (ferritin iron) in the brain was measured with MRI utilizing the Field Dependent Relaxation Rate Increase (FDRI) method. 47% of the sample carried neither genetic variant (IRON-) and 53% carried one and/or the other (IRON+). IRON+ men had significantly higher FDRI compared to IRON- men (p = 0.013). This genotype effect was not observed in women who, as expected, had lower FDRI than men. This is the first published evidence that these highly prevalent genetic variants in iron metabolism genes can influence brain iron levels in men. Clinical phenomena such as differential gender-associated risks of developing neurodegenerative diseases and age at onset may be associated with interactions between iron genes and brain iron accumulation. Clarifying mechanisms of brain iron accumulation may help identify novel interventions for age-related neurodegenerative diseases. Show more
Keywords: Alpha synuclein, amyloid, basal ganglia, chelation, dementia, diet, free radicals, gene, gray matter, iron, Lewy body, metal, myelin, oligodendrocytes, prevention, risk, tau, treatment
Citation: Journal of Alzheimer's Disease, vol. 20, no. 1, pp. 333-341, 2010
Authors: Landhuis, Esther
Article Type: Editorial
Citation: Journal of Alzheimer's Disease, vol. 20, no. 1, pp. 343-349, 2010
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