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The neuroprotective effect of carboxyfullerene, a water-soluble derivative of fullerene, on the transient focal ischemia-reperfusion injury was investigated in rat brain. A focal infarction in the cerebral cortex was consistently observed 24 h after a 60-min transient ischemia by occlusion of the right middle cerebral artery and bilateral common carotid(More)
Accumulation of transition metals has been suggested to be responsible for the deteriorated nigrostriatal dopaminergic system in Parkinson's patients. In the present study, the mechanism underlying the zinc-induced neurotoxicity was investigated in the nigrostriatal dopaminergic system in vivo. Our 6-methoxy-8-paratoluene sulfonamide quinoline fluorescence(More)
The mechanism that underlies the progressive degeneration of the dopaminergic neurons in Parkinson's disease (PD) is not clear. The Zn(2+) level in the substantia nigra of Parkinson's patients is increased. However, it is unknown whether Zn(2+) has a role in the degeneration of dopaminergic neurons. This study identifies an interaction between dopamine and(More)
The neuroprotective effect of intermittent hypoxia on ferrous citrate (iron)-induced oxidative stress was investigated in the nigrostriatal dopaminergic system of rat brain. Female Wistar rats were subjected to 380 mm Hg in an altitude chamber for 15 h/day for 7, 14, or 28 days. Iron was locally infused in the substantia nigra of anesthetized rats. Seven(More)
The antioxidative action of melatonin on iron-induced neurodegeneration in the nigrostriatal dopaminergic system was evaluated in vivo. Intranigral infusion of iron chronically degenerated the dopaminergic transmission of the nigrostriatal system. An increase in lipid peroxidation in the infused substantia nigra and reductions in dopamine levels and(More)
In the present study, the role of heme oxygenase (HO)-1 in sodium arsenite (arsenite)-induced neurotoxicity was investigated using primary cultured cortical neurons. Incubation with arsenite was found to cause cell death of primary cultured cortical neurons in concentration- and time-dependent manners. Furthermore, arsenite induced caspase 3 activation and(More)
In this study, the protective effect of melatonin on kainic acid (KA)-induced neurotoxicity involving autophagy and α-synuclein aggregation was investigated in the hippocampus of C57/BL6 mice. Our data showed that intraperitoneal injection of KA (20 mg/kg) increased LC3-II levels (a hallmark protein of autophagy) and reduced mitochondrial DNA content and(More)
Neurodegeneration in the locus coeruleus (LC) has been documented in several central nervous system (CNS) neurodegenerative diseases. In the present study, iron-induced oxidative injury in the LC was investigated in chloral-hydrate anesthetized rats. Three days after bilateral infusion of iron in the LC, both vertical and horizontal locomotor activities(More)
This study was undertaken to dynamically examine the effects of ethanol on the striatal dopaminergic transmission, in terms of N-methyl-D-aspartate (NMDA)-evoked dopamine release and dopamine uptake. In the striatum of urethane-anesthetized Sprague-Dawley rats, extracellular dopamine was measured using in vivo electrochemical detection coupled with a(More)
An involvement of dopamine uptake in the N-methyl-D-aspartate (NMDA)-modulated dopaminergic transmission in rat striatum was studied using the technique of in vivo electrochemical detection. Microinjection of potassium (K+) evoked dopamine overflows from the dopamine-containing nerve terminals in the striatum. While application of NMDA did not evoke any(More)