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Title

Variations in brain DNA

AuthorsÁvila, Jesús ; Gómez Ramos, Alberto; Soriano, Eduardo
Issue Date25-Nov-2014
PublisherFrontiers Media
CitationFrontiers in Aging Neuroscience 6: 323 (2014)
AbstractIt is assumed that DNA sequences are conserved in the diverse cell types present in a multicellular organism like the human being. Thus, in order to compare the sequences in the genome of DNA from different individuals, nucleic acid is commonly isolated from a single tissue. In this regard, blood cells are widely used for this purpose because of their availability. Thus blood DNA has been used to study genetic familiar diseases that affect other tissues and organs, such as the liver, heart, and brain. While this approach is valid for the identification of familial diseases in which mutations are present in parental germinal cells and, therefore, in all the cells of a given organism, it is not suitable to identify sporadic diseases in which mutations might occur in specific somatic cells. This review addresses somatic DNA variations in different tissues or cells (mainly in the brain) of single individuals and discusses whether the dogma of DNA invariance between cell types is indeed correct. We will also discuss how single nucleotide somatic variations arise, focusing on the presence of specific DNA mutations in the brain.
Publisher version (URL)http://dx.doi.org/10.3389/fnagi.2014.00323
URIhttp://hdl.handle.net/10261/152788
DOI10.3389/fnagi.2014.00323
ISSN1663-4365
Appears in Collections:(CBM) Artículos
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