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- W2079916076 abstract "Abstract Multiple sclerosis (MS) is an immune‐mediated disabling neurological disorder involving inflammation, demyelination, axonal damage, and neurodegeneration. Poly(ADP‐ribose)polymerase‐1 (PARP‐1), a nuclear enzyme linked to DNA repair, has been shown to regulate the cellular inflammatory response through interactions with nuclear factor‐κB. Extensive PARP‐1 activation can, by separate mechanisms, also cause cell death. PARP‐1 activation in brain occurs in several settings associated with oxidative stress and DNA damage, and PARP‐1 inhibition has been shown to attenuate inflammation and improve neuronal survival in these settings. Here we studied the pattern of PARP‐1 activation in a nonhuman primate model of MS, marmoset ( Callithrix jacchus ) experimental allergic encephalomyelitis (EAE). Characteristic of this model is relapsing and remitting focal demyelination typical of human MS. Immunostaining for poly(ADP‐ribose), the enzymatic product of PARP‐1, showed PARP‐1 activation specifically in plaque areas of EAE brains. Robust immunostaining was found in astrocytes surrounding demyelinated EAE plaques and in scattered nearby microglia, oligodendrocytes, and neurons. The immunostaining also suggested PARP‐1 activation in occasional endothelial cells surrounded by microglia or infiltrating peripheral blood cells. Given the importance of PARP‐1 in both inflammation and cell death processes, these findings suggest that PARP‐1 activation may be a significant factor in the pathogenesis of MS. © 2005 Wiley‐Liss, Inc." @default.
- W2079916076 created "2016-06-24" @default.
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- W2079916076 date "2005-06-01" @default.
- W2079916076 modified "2023-10-17" @default.
- W2079916076 title "Poly(ADP-ribose) polymerase-1 activation in a primate model of multiple sclerosis" @default.
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- W2079916076 doi "https://doi.org/10.1002/jnr.20525" @default.
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