2015, Number 1
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Arch Neurocien 2015; 20 (1)
Molecular advances in Down syndrome and their possible application in neurology
Ramos-Kuri M, Salgado-Sánchez E
Language: Spanish
References: 66
Page: 65-78
PDF size: 369.76 Kb.
ABSTRACT
This review examines recent advances in knowledge about Down’s Syndrome (DS), with emphasis on molecular
therapy and its potential in the treatment of other disorders related with DS such as Alzheimer’s Disease (AD) and
cognitive impairment. The close relationship between DS and early onset AD is well-known. DS, for which there is no
specific treatment yet, is the main cause of mental disability worldwide and is caused by full or partial trisomy of
chromosome 21. Over-expression of genes located in this chromosome is the main cause of DS, some of them are
critical for the disease. For example, DYRK1A, a dual-specificity tyrosine phosphorylation-regulated kinase, has
been strongly correlated with learning impairment associated with DS and the early onset AD. The pathogenesis of
DYRK1A is by hyperphosprorylation of the amyloid precursor protein (APP) and the tubulin associated unit (Tau)
directly related with the AD in non SD patients. Another potential application is that DS patients have a low risk of
developing solid tumors, due to suppression of angiogenesis resulting from inhibition of the vascular endothelial
growth factor (VEGF) via the inhibition of calcineurin pathway by DSCR-1 protein, that is over-expressed in the 21st
chromosome. Molecular therapy for DS using two vasoactive intestinal peptides (NAP and SAL) is still at experimental
level and has been tried only in murine models, but has shown considerable potential in the treatment of developmental
delay and learning deficits in DS and other neurological disease.
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