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Damian M Herz et al.
Annals of neurology, 75(6), 829-836 (2014-06-04)
In Parkinson disease (PD), long-term treatment with the dopamine precursor levodopa gradually induces involuntary "dyskinesia" movements. The neural mechanisms underlying the emergence of levodopa-induced dyskinesias in vivo are still poorly understood. Here, we applied functional magnetic resonance imaging (fMRI) to
Gonzalo Pérez-Mitta et al.
Journal of the American Chemical Society, 137(18), 6011-6017 (2015-04-17)
The ability to modulate the surface chemical characteristics of solid-state nanopores is of great interest as it provides the means to control the macroscopic response of nanofluidic devices. For instance, controlling surface charge and polarity of the pore walls is
Keun Hong Park et al.
Journal of neuroscience research, 92(12), 1746-1756 (2014-07-22)
Multiple treatments with L-3,4-dihydroxyphenylalanine (L-DOPA; 20 µM) induce neurite-like outgrowth and reduce dopamine biosynthesis in rat adrenal pheochromocytoma (PC) 12 cells. We therefore investigated the effects of multiple treatments with L-DOPA (MT-LD) on cell survival and death over a duration
Ping Chen et al.
Gene, 567(2), 138-145 (2015-05-11)
In insects, pigment patterns are formed by melanin, ommochromes, and pteridines. Here, the effects of pteridine synthesis on melanin formation were studied using 4th instar larvae of a wild-type silkworm strain, dazao (Bombyx mori), with normal color and markings. Results
Ezekiel J Maier et al.
Genome research, 25(5), 690-700 (2015-02-04)
Key steps in understanding a biological process include identifying genes that are involved and determining how they are regulated. We developed a novel method for identifying transcription factors (TFs) involved in a specific process and used it to map regulation
Hansy Haberkorn et al.
Aquatic toxicology (Amsterdam, Netherlands), 147, 158-167 (2014-01-15)
Effects of simultaneous exposure of Pacific oyster, Crassostrea gigas, to both a harmful dinoflagellate that produces Paralytic Shellfish Toxins (PST), Alexandrium minutum, and cadmium (Cd) and copper (Cu), were assessed. Oysters were exposed to a mix of Cd-Cu with two
Yanping Li et al.
Molecular pharmaceutics, 11(9), 3174-3185 (2014-07-30)
Parkinson's disease (PD) has become one of the most deadly diseases due to a lack of effective treatment. Herein, N-3,4-bis(pivaloyloxy)dopamine-3-(dimethylamino)propanamide (PDDP), a brain-specific derivative of dopamine, was designed and synthesized, which consists of a brain targeted ligand, N,N-dimethyl amino group
Hye-Yeon Park et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 34(35), 11744-11753 (2014-08-29)
The dopamine precursor L-3,4-dihydroxyphenylalanine (L-DOPA) is widely used as a therapeutic choice for the treatment of patients with Parkinson's disease. However, the long-term use of L-DOPA leads to the development of debilitating involuntary movements, called L-DOPA-induced dyskinesia (LID). The cAMP/protein
M A Raskind et al.
Biological psychiatry, 46(6), 756-765 (1999-09-24)
High cerebrospinal fluid (CSF) norepinephrine (NE) concentrations in aging and Alzheimer's disease (AD) could reflect decreased NE clearance from central nervous system (CNS) extracellular fluid or increased release of NE into CNS extracellular fluid. Measuring CSF concentrations of the intraneuronal
K Cichewicz et al.
Genes, brain, and behavior, 16(3), 394-403 (2016-10-21)
Dopamine (DA) is a neurotransmitter with conserved behavioral roles between invertebrate and vertebrate animals. In addition to its neural functions, in insects DA is a critical substrate for cuticle pigmentation and hardening. Drosophila tyrosine hydroxylase (DTH) is the rate limiting
M O Kristensen et al.
Acta neurologica Scandinavica, 87(6), 475-481 (1993-06-01)
The cobalamin status was evaluated in Alzheimer dementia (n = 26), other dementias (n = 24), various gerontopsychiatric disorders (n = 25), and in neuro-psychiatrically healthy controls (n = 20). Supplementing serum cobalamin we measured methylmalonic acid (MMA), a metabolite
Weilian Yang et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 88, 69-73 (2014-02-04)
The present study was undertaken to evaluate the effects of l-DOPA pre-loading on the uptake of BPA using the F98 rat glioma and the murine B16 melanoma models. In vitro pretreatments of F98 glioma and B16 melanoma cells with l-DOPA
Molly J Crockett et al.
Current biology : CB, 25(14), 1852-1859 (2015-07-07)
An aversion to harming others is a core component of human morality and is disturbed in antisocial behavior. Deficient harm aversion may underlie instrumental and reactive aggression, which both feature in psychopathy. Past work has highlighted monoaminergic influences on aggression
Caroline Moreau et al.
Brain : a journal of neurology, 138(Pt 5), 1271-1283 (2015-03-26)
After more than 50 years of treating Parkinson's disease with l-DOPA, there are still no guidelines on setting the optimal dose for a given patient. The dopamine transporter type 1, now known as solute carrier family 6 (neurotransmitter transporter), member
Fabiana As Brandão et al.
Virulence, 6(6), 618-630 (2015-06-24)
Cryptococcus neoformans undergoes phenotypical changes during host infection in order to promote persistence and survival. Studies have demonstrated that such adaptations require alterations in gene transcription networks by distinct mechanisms. Drugs such as the histone deacetylases inhibitors (HDACi) Sodium Butyrate
Ahmed A Othman et al.
Clinical pharmacokinetics, 54(9), 975-984 (2015-04-16)
Oral levodopa-carbidopa (LC-oral) treatment in advanced Parkinson's disease (PD) is associated with motor complications due to large fluctuations in levodopa plasma concentrations. Levodopa-carbidopa intestinal gel (LCIG) provides individualized continuous levodopa-carbidopa delivery through intrajejunal infusion. This study evaluated the pharmacokinetics, safety
R Scott Obach et al.
Drug metabolism and disposition: the biological fate of chemicals, 36(7), 1385-1405 (2008-04-23)
We present herein a compilation and trend analysis of human i.v. pharmacokinetic data on 670 drugs representing, to our knowledge, the largest publicly available set of human clinical pharmacokinetic data. This data set provides the drug metabolism scientist with a
Shutao Guo et al.
ACS nano, 8(5), 4996-5009 (2014-04-12)
The tumor microenvironment plays an important role in the tumor's progression and metastasis. Therefore, successful alteration of this delicate setting against the tumor's favor can open a window for therapeutic efficacy. We have developed a modality to bring about treatment-induced
Lisa F Potts et al.
Annals of neurology, 77(6), 930-941 (2015-03-31)
Effective medical management of levodopa-induced dyskinesia (LID) remains an unmet need for patients with Parkinson disease (PD). Changes in opioid transmission in the basal ganglia associated with LID suggest a therapeutic opportunity. Here we determined the impact of modulating both
Amit Naskar et al.
Journal of pineal research, 58(3), 262-274 (2015-01-30)
L-3,4-dihydroxyphenylalanine (L-DOPA) reduces symptoms of Parkinson's disease (PD), but suffers from serious side effects on long-term use. Melatonin (10-30 mg/kg, 6 doses at 10 hr intervals) was investigated to potentiate L-DOPA therapeutic effects in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonism in mice. Striatal
David S Goldstein et al.
The Journal of pharmacology and experimental therapeutics, 305(3), 800-811 (2003-03-22)
Human plasma contains several catechols, including the catecholamines norepinephrine, epinephrine, and dopamine, their precursor, L-3,4-dihydroxyphenylalanine (L-DOPA), and their deaminated metabolites, dihydroxyphenylglycol, the main neuronal metabolite of norepinephrine, and dihydroxyphenylacetic acid, a deaminated metabolite of dopamine. Products of metabolism of catechols
Seppo Parkkila et al.
Bioorganic & medicinal chemistry letters, 16(15), 3955-3959 (2006-05-30)
The first activation study of isoform XIII of carbonic anhydrase (CA, EC 4.2.1.1) is reported. A series of amino acids and amines incorporating protonatable moieties of the primary/heterocyclic amine type were included in the study. As for CA I and
Ihsan Ullah et al.
Journal of microbiology (Seoul, Korea), 53(2), 127-133 (2015-01-30)
The Photorhabdus temperata M1021 secretes toxic compounds that kill their insect hosts by arresting immune responses. Present study was aimed to purify the insecticidal and antimicrobial compound(s) from the culture extract of P. temperata M1021 through bioassay guided fractionation. An
Alan J. Sinclair, John E. Morley, Bruno Vellas
Pathy's Principles and Practice of Geriatric Medicine (2012)
Oscar Solís et al.
Neurobiology of disease, 73, 49-59 (2014-10-05)
Nitric oxide (NO), a gaseous messenger molecule synthesized by nitric oxide synthase (NOS), plays a pivotal role in integrating dopamine transmission in the basal ganglia and has been implicated in the pathogenesis of Parkinson disease (PD). To study the role
Alice-Georgia Vassiliou et al.
Neurochemical research, 30(5), 641-649 (2005-09-24)
An endogenous inhibitor of L-Dopa decarboxylase was identified and purified from human serum. In Triton X-114 partitioning experiments, the inhibitor was recovered in the detergent enriched phase, suggesting a hydrophobic nature. Purification was achieved by means of proteinase K digestion
Hyo Jung Kim et al.
International journal of molecular sciences, 16(4), 8772-8788 (2015-04-24)
The melanin-inducing properties of cirsimaritin were investigated in murine B16F10 cells. Cirsimaritin is an active flavone with methoxy groups, which is isolated from the branches of Lithocarpus dealbatus. Tyrosinase activity and melanin content in murine B16F10 melanoma cells were increased
K Tada et al.
Acta medica Okayama, 45(5), 333-338 (1991-10-01)
L-Dopa and three catecholamines in the amniotic fluid before and after labor were measured to confirm the amniotic fluid catecholamine levels at the end of gestation. L-Dopa values were higher than those of three catecholamines, and dopamine which was the
Morteza Malakoutikhah et al.
Journal of medicinal chemistry, 51(16), 4881-4889 (2008-08-01)
Several peptide families containing N-methylated amino acids were designed and synthesized using solid-phase peptide synthesis (SPPS). The permeability and phospholipophilicity of these compounds were studied by parallel artificial membrane permeability assay (PAMPA) and immobilized artificial membrane chromatography (IAMC) to select
H U Shetty et al.
Clinical chemistry, 42(2), 298-302 (1996-02-01)
Previous studies suggest the presence of increased concentrations of cerebral myo-inositol in Alzheimer disease (AD). To characterize this abnormality further, we quantified myo-inositol and several other polyols in cerebrospinal fluid (CSF) and plasma from 10 AD subjects and 10 healthy
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