Abstract
Trace metallic elements in human cells play important roles in various cell functions as metalloprotein, metalloenzyme or metallic ions. Diffuse neurofibrillary tangles with calcification (DNTC) is an atypical dementia and is characterized pathologically by diffuse neurofibrillary tangles without senile plaques. In this study, X-ray fluorescence (XRF) spectroscopy using synchrotron radiation (SR) was applied to determine the distribution and density of the ultra-trace elements in the brain tissues from DTNC patients. This method made it possible to determine trace metallic elements non-destructively. The trace metallic elements (such as Ca, Fe, Zn, and Pb) in the brain tissues were examined. Two-dimension imaging of the elements and relative quantification of the elements in the brains were performed. The lead concentrations were observed in the calcified blood vessel in the brains with DNTC.
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