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Ibuprofen Protects from Cypermethrin-Induced Changes in the Striatal Dendritic Length and Spine Density.
Molecular Neurobiology 2018 March
Microgliosis and inflammation are major wrongdoers in cypermethrin-induced Parkinsonism along with oxidative stress, mitochondrial dysfunction and α-synuclein aggregation. Dopamine depletion could alter dendritic morphology, length and spine number in the striatum. Present study investigated the effect of ibuprofen on the dendritic morphology, length and spine density in cypermethrin PD model. Male pups were treated intraperitoneally with cypermethrin during postnatal days followed by adulthood to induce Parkinsonism using standard procedure along with controls. Subsets of animals were pre-treated with ibuprofen 2 h prior to cypermethrin treatment during adulthood. Standard methods were used to confirm Parkinsonism/neuroprotection. Striatal dendritic morphology, length, spine number and expression of synaptophysin and postsynaptic density protein-95 (PSD-95) along with the nigrostriatal pro-inflammatory and apoptotic proteins were measured. Cypermethrin induced Parkinsonian traits and attenuated the dendritic length, spine number and expression of synaptophysin and PSD-95. While cypermethrin increased the expression of interleukin-1β, interleukin-4, interferon-γ, inducible nitric oxide synthase, caspase-3, caspase-9 and B-cell lymphoma (Bcl)-xl proteins, it attenuated Bcl-2 expression. Ibuprofen normalized the changes in dendritic morphology, length, spine number and expression of synaptophysin, PSD-95, and pro-inflammatory and apoptotic proteins. Results demonstrate that cypermethrin induces inflammation and alters dendritic morphology, length and spine number, which are encountered by ibuprofen.
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