Learn More
Human alpha-synuclein is a 140-amino acid protein of unknown function abundantly expressed in the brain and found in Lewy bodies, a characteristic feature of Parkinson's disease. Alpha-synuclein is random in water under physiological conditions, but the first approximately 100 residues interact with SDS micelles or acidic phospholipid small unilamellar(More)
Dopaminergic human neuroblastoma SH-SY5Y cells were stably transformed to increase expression of alpha-synuclein, a Parkinson's disease-related protein. Transformed cells were more resistant to oxidative insults, showing a cytoprotective role of alpha-synuclein. The expression of redox chaperonins (DJ-1, HSP70, and 14-3-3) was evaluated by Western blotting.(More)
OBJECTIVE To assess the prevalence, nature, and associated phenotypes of ATP13A2 gene mutations among patients with juvenile parkinsonism (onset <21 years) or young onset (between 21 and 40 years) Parkinson disease (YOPD). METHODS We studied 46 patients, mostly from Italy or Brazil, including 11 with juvenile parkinsonism and 35 with YOPD. Thirty-three(More)
Nuclear Magnetic Relaxation field-cycling relaxometry is a technique, able to report on water mobility in tissues. By means of this technique, post-mortem specimens from both controls and idiopathic Parkinson's disease patients have been investigated. Results show different relaxometric behavior between the groups, which is consistent with protein(More)
The pigmentation of substantia nigra pars compacta dopaminergic neurons is due to the presence of neuromelanin, an irregular macro-molecular pigment belonging to the family of melanins. Depletion of neuromelanin in Parkinson's disease is typically indicated by loss of brown color in this area. Unlike that from controls, the pigment extracted from substantia(More)
The pigmentation of substantia nigra pars compacta dopaminergic neurons is due to the presence of neuromelanin, an irregular macromolecular pigment belonging to the family of melanins. Depletion of neuromelanin in Parkinson's disease is typically indicated by loss of brown color in this area. Unlike that from controls, the pigment extracted from substantia(More)
Pigmentation of neurons in substantia nigra is due to neuromelanin, a pigment that stores large amounts of iron. Human mesencephalic neuromelanin has been investigated by means of magnetic susceptibility measurements as a function of temperature. Magnetic measurements provide a physico-chemical characterization of the iron cluster buried in the organic(More)
Proteome analysis is a powerful methodology to investigate protein expression in tissues involved in diseases not linked to particular genetic defects. To date, this technique has a limited number of applications in the field of neurodegenerative disorders. We decided therefore to investigate by this approach autoptic mesencephalic tissues of patients with(More)
  • 1