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Pharmacological modulation of amphetamine-induced dyskinesia in transplanted hemi-parkinsonian rats

Foetal cell transplantation in patients with Parkinson's disease can induce motor complications independent of L-DOPA administration, known as graft-induced dyskinesia. In the 6-OHDA lesioned rat model of Parkinson's disease, post-transplantation abnormal movements can develop in response to an amphetamine challenge, a behaviour which is used to model graft-induced dyskinesia. Although L-DOPA-indu

Tyrosine residues as redox cofactors in human hemoglobin : implications for engineering nontoxic blood substitutes

Respiratory proteins such as myoglobin and hemoglobin can, under oxidative conditions, form ferryl heme iron and protein-based free radicals. Ferryl myoglobin can safely be returned to the ferric oxidation state by electron donation from exogenous reductants via a mechanism that involves two distinct pathways. In addition to direct transfer between the electron donor and ferryl heme edge, there is

Role of dihydrolipoamide dehydrogenase in regulation of raffinose transport in Streptococcus pneumoniae

Streptococcus pneumoniae strains lacking the enzyme dihydrolipoamide dehydrogenase (DLDH) show markedly reduced ability to grow on raffinose and stachyose as sole carbon sources. Import of these sugars occurs through the previously characterized raffinose ATP-binding cassette (ABC) transport system, encoded by the raf operon, that lacks the necessary ATP-binding protein. In this study, we identifi