ArticleFrontiers in pharmacology2026
Chronic inhibition of receptor protein tyrosine phosphatase β/ζ reduces amyloid plaque load and modulates pleiotrophin-expressing glial cells, glial-plaque interactions and genes related to amyloid beta clearance.
Article in Frontiers in pharmacology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Alzheimer's disease (AD) is the most common cause of dementia. Pleiotrophin (PTN) is a neurotrophic factor relevant for central nervous system repair, neuron differentiation and survival. It is upregulated in different neuroinflammatory conditions. PTN is an endogenous inhibitor of Receptor Protein Tyrosine Phosphatase (RPTP) β/ζ. In a previous study, we showed that a short treatment with the RPTPβ/ζ inhibitor MY10 reduced amyloid beta (Aβ) plaque formation and glial activation in old APP/PS1 mice. Nevertheless, these preliminary data required new studies to prove the disease-modifying potential of RPTPβ/ζ inhibition by using younger animals and a longer treatment with MY10. Thus, we have now treated for 3 months five- to seven-month-old wild type (WT) and APP/PS1 mice with MY10. This treatment decreased Aβ plaque formation and increased the number of microglial cells in the dorsal subiculum of APP/PS1 mice. In addition, MY10 reduced the number of GFAP+, not Iba1+, cells surrounding Aβ plaques. As expected, PTN expression was upregulated in the brain of APP/PS1 compared to WT mice and it was mainly found in Iba1+ and GFAP+ cells. Interestingly, treatment with MY10 significantly decreased the expression of PTN and the number of PTN-expressing Iba1+ and GFAP+ cells. MY10 induced a significant decrease of
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