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- W2011041372 abstract "Parkinson's disease (PD) is a progressive neurological disorder characterized by a selective loss of dopamine (DA) neurons in the substantia nigra (SN). Although current therapy can control symptoms of this disorder, there is no effective therapy available to halt its progression. Recently, neuroinflammation has been recognized as an important contributor to the pathogenesis of PD, and nuclear factor-kappaB (NF-kappaB) plays a key role in regulating neuroinflammation. Hence, the modulation of NF-kappaB pathway may have therapeutic potential for PD. Activation of NF-kappaB depends on the phosphorylation of its inhibitor, IkappaB, by the specific IkappaB kinase (IKK) subunit IKK-beta. Compound A (7-[2-(cyclopropylmethoxy)-6-hydroxyphenyl]-5-[(3S)-3-piperidinyl]-1, 4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-2-one hydrochloride), a potent and selective inhibitor of IKK-beta, has recently been reported to provide cardioprotection through specific suppression of NF-kappaB signaling. The present study, for the first time, elucidates neuroprotective effects of compound A. Daily subcutaneous injection of compound A (1 mg/kg) for 7 days inhibited the activation of microglia induced by nigral stereotaxic injection of lipopolysaccharide (LPS) and significantly attenuated LPS-induced loss of DA neurons in the SN. In vitro mechanistic studies revealed that neuroprotective effects of compound A were mediated by 1) suppressing the activity of microglial NADPH oxidase and decreasing the production of reactive oxygen species, and 2) inhibiting NF-kappaB-mediated gene transcription of various proinflammatory mediators in microglia via IKK-beta suppression. These findings indicate that compound A afforded potent neuroprotection against LPS-induced neurodegeneration through selective inhibition of NF-kappaB activation and may be of potential benefit in the treatment of PD." @default.
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- W2011041372 date "2010-02-26" @default.
- W2011041372 modified "2023-10-18" @default.
- W2011041372 title "Inhibition of IκB Kinase-β Protects Dopamine Neurons Against Lipopolysaccharide-Induced Neurotoxicity" @default.
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- W2011041372 doi "https://doi.org/10.1124/jpet.110.165829" @default.
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