Bu çalışmada, tablet ilaç numunesinde bulunan levadopa ve benserazid etken maddelerinin aynı anda miktar tayinlerine hiçbir ayırma işlemi uygulanmaksızın ultraviyole görünür bölge spektroskopisi ile tayinleri gerçekleştirilmiş elde edilen veriler yapay sinir ağları (ANN) kemometrik yöntemi değerlendirilmiştir. Çalışmanın sonunda kullanılan karşılaştırmak amacıyla kısmi en küçük kareler (PLS) uy...

Carbidopa and benserazide have been described as inhibitors of dopa decarboxylase and both have been used in the treatment of Parkinson's disease. Because of their chemical structure as polyphenols, these compounds can behave as substrates of tyrosinase and peroxidase. We demonstrate that these enzymes oxidize both substrates. Since o-quinones are unstable, a chronometric method for enzymatic i...

A 21 year old man was admitted to hospital presenting with low grade fever (37.7°C), slight meningeal irritation, headache, visual hallucinations, dysarthria, insomnia, gait and limb ataxia, and a postural tremor. There was no relevant history except for a fall into a river after a fight 2 weeks before admission. There were only a few superficial skin lesions, no medical attention was sought. T...

Descrevemos um método eletroquímico para a determinação voltamétrica seqüencial de benserazida e levodopa usando cloroanil (CA) como eletro-catalisador. Para investigar a adequação do CA como mediador na oxidação eletrocatalitica da benserazida e levodopa, em solução aquosa, foram usadas a voltametria cíclica, voltametria de pulso diferencial, cronoamperometria e espectroscopia de impedância el...

AIMS The aims were to provide proofs of mechanism and principle by establishing the ability of the amino acid L-tryptophan (Trp) combined with the kynureninase inhibitor benserazide (BSZ) to inhibit the liver mitochondrial low K(m) aldehyde dehydrogenase (ALDH) activity after administration and in vivo and to induce aversion to alcohol. METHODS Trp, BSZ or both were administered to male Wista...

The present investigation was conducted to document a role of L-threo-3,4-dihydroxyphenylserine (L-DOPS), precursor of L-norepinephrine (NE), in the functional recovery from beam-walking performance deficits in rats after unilateral sensorimotor cortex ablation. L-DOPS was administered simultaneously with benserazide (BSZ; a peripheral aromatic amino acid decarboxylase inhibitor), and the regio...

Background: The long-term intermittent Levodopa (L-dopa) stimulation contributes to an aberrant activation of D1 receptor (D1R) mediated extracellular signal-regulated kinases1/2 (ERK1/2) in the striatal medium spiny neurons, resulting in the occurrence of L-dopa induced dyskinesia (LID). Recently, a novel signaling pathway, D1R/Shp-2/ERK1/2, was proposed to be required for the occurrence of LI...