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Lu et al. Molecular Neurodegeneration 2014, 9:17 NPY Y2 receptor Agonist MedChemExpress molecularneurodegeneration/content/9/1/RESEARCH ARTICLEOpen AccessThe Parkinsonian mimetic, 6-OHDA, impairs axonal transport in dopaminergic axonsXi Lu1, Jeong Sook Kim-Han2, Steve Harmon2, Shelly E Sakiyama-Elbert1 and Karen L O’MalleyAbstract6-hydroxydopamine (6-OHDA) is one of the most frequently applied toxins for modeling degeneration of dopaminergic (DA) neurons in Parkinson’s illness. 6-OHDA also causes axonal degeneration, a method that appears to precede the death of DA neurons. To know the processes involved in 6-OHDA-mediated axonal degeneration, a microdevice created to isolate axons fluidically from cell bodies was used in conjunction with green fluorescent protein (GFP)-labeled DA neurons. Benefits showed that 6-OHDA immediately induced mitochondrial transport dysfunction in both DA and non-DA axons. This appeared to be a general impact on transport function considering that 6-OHDA also disrupted transport of synaptophysin-tagged vesicles. The effects of 6-OHDA on mitochondrial transport have been blocked by the addition of the SOD1-mimetic, Mn(III)tetrakis(4-benzoic acid)porphyrin chloride (MnTBAP), as well because the anti-oxidant N-acetyl-cysteine (NAC) suggesting that totally free radical species played a part in this approach. Temporally, microtubule disruption and autophagy occurred just after transport dysfunction yet prior to DA cell death following 6-OHDA treatment. The outcomes in the study recommend that ROS-mediated transport dysfunction happens early and plays a important function in inducing axonal degeneration in response to 6-OHDA therapy. Keywords and phrases: Neurodegeneration, Mitochondria, Microtubule, Parkinson’s disease, Microfluidic devicesBackground Genetic, imaging and environmental research of Parkinson’s disease (PD) have revealed early troubles in synaptic function and connectivity, suggesting that axonal impairmen.
