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No association between butyrylcholinesterase K-variant and Alzheimer disease in Chinese.

Increased butyrylcholinesterase (BChE) activity has been reported to be associated with the formation of amyloid plaques and neurofibrillary tangles and may consequently be involved in the pathogenesis of Alzheimer disease (AD). Because the catalytic activity of BChE-K variant is reduced by one-third compared with non-variant, we speculated that BChE-K variant has a protective effect on AD. However, Lehmann et al. [1997] reported a synergistic effect between the genes for BChE-K variant and apolipoprotein E (ApoE) epsilon 4, which increases the risk for late onset AD. In the present study, we tested 89 Chinese AD patients and 101 Chinese controls and found no evidence of association between BCHE-K and AD of either early or late onset (age > 65 years). No evidence of a synergistic effect was found between the BCHE-K variant and APOE epsilon 4 in this study. Our data suggest that BChE-K variant has no modifying effect on the pathogenesis of AD. Am. J. Med. Genet. (Neuropsychiatr. Genet.) 96:167-169, 2000.[1]

References

  1. No association between butyrylcholinesterase K-variant and Alzheimer disease in Chinese. Lee, D.W., Liu, H.C., Liu, T.Y., Chi, C.W., Hong, C.J. Am. J. Med. Genet. (2000) [Pubmed]
 
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