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Items from 1 to 20 out of 14,131 results

article

Facile synthesis of boronic acid-functionalized magnetic nanoparticles for efficient dopamine extraction

Jeong Keun Kook, Viet-Duc Phung, Do-Yeong Koh, Sang-Wha Lee

Nano Convergence > 2019 > 6 > 1 > 1-8

Because dopamine (DA) is one of the most critical neurotransmitters that influence a wide variety of motivated human behaviors, it is necessary to develop a facile diagnostic tool that can quantify the physiological level. In this study, core–shell magnetic silica nanoparticles (Fe₃O₄@SiO₂) were prepared using a modified sol–gel reaction. The Fe₃O₄@SiO₂ were functionalized using 3-aminophenylboronic...

article

Troubles moteurs tardifs induits par antipsychotiques : mise au point

Hélène Denizot, Benjamin Rolland, Caroline Nijhout, Thomas Charpeaud, more

Annales M�dico-psychologiques, revue psychiatrique > 2017 > 175 > 5 > 474-479

Antipsychotic-induced tardive movement disorders (ATMDs) constitute a set of late-onset involuntary movements, resulting from the blocking of dopamine receptors. ATMDs are generally underscreened by health professionals, though they may also occur with new generation antipsychotics. ATMDs encompass several specific clinical types: tardive dyskinesia, tardive dystonia, tardive akathisia, tardive tremor,...

article

Proposition pour une physiologie de la jouissance

Ariane Bazan, Sandrine Detandt, Sarah Askari

L'�volution Psychiatrique > 2016 > 81 > 4 > 777-787

(1) This article aims to articulate the Lacanian concept of jouissance in view of applying this definition to the physiological sphere. (2) It aims to develop a proposal for an instantiation of jouissance in the physiological sphere.(1) Distinction is made, with reference to Freudian and Lacanian texts, of four different aspects of the concept: for the body (a) drive, (b) the experience of satisfaction,...

article

Conduites d’alcoolisation

Jean-Jacques Chavagnat, Diane Lévy-Chavagnat

Actualites pharmaceutiques > 2015 > 54 > 543 > 16-21

Les conduites d’alcoolisation concernent l’ensemble de la population, avec des spécificités liées notamment à l’âge du consommateur. Avec le temps, des modifications dans l’homéostasie de certains circuits neuronaux centraux, lentement réversibles lorsque l’intoxication cesse, expliquent l’appétence pour l’alcool par la conjonction de plusieurs phénomènes étroitement intriqués impliquant notamment...

article

Nano-perovskite carbon paste composite electrode for the simultaneous determination of dopamine, ascorbic acid and uric acid

Nada F. Atta, Shimaa M. Ali, Ekram H. El-Ads, A. Galal, more

Electrochimica Acta > 2014 > 128 > Complete > 16-24

A perovskite, SrPdO ₃ , of the type ABO ₃ was used in the form of a composite with carbon paste as an electrode (CpE/SrPdO ₃ ) for the electrochemical sensing of dopamine (DA) in biological fluids. The CpE/SrPdO ₃ electrode showed a unique long term stability and low detection limit for (DA) determination. The structural characteristics of the modifier (SrPdO ₃...

article

Dazed and confused: A molecular genetic approach to everyday cognitive failure

Sebastian Markett, Christian Montag, Corinna Diekmann, Martin Reuter, more

Neuroscience Letters > 2014 > 566 > Complete > 216-220

An individual's susceptibility to everyday cognitive failure constitutes a risk factor for physical and mental health. Different factors such as inefficiency of executive functioning and high trait impulsivity have been shown to affect this susceptibility. Furthermore, twin studies indicate a high heritability of failure susceptibility revealing genetic variables as an important biological influence...

article

Dynamic changes in dopamine neuron function after DNSP-11 treatment: Effects in vivo and increased ERK 1/2 phosphorylation in vitro

Joshua L. Fuqua, Ofelia M. Littrell, Martin Lundblad, Jadwiga Turchan-Cholewo, more

Peptides > 2014 > 54 > Complete > 1-8

Glial cell-line derived neurotrophic factor (GDNF) has demonstrated robust effects on dopamine (DA) neuron function and survival. A post-translational processing model of the human GDNF proprotein theorizes the formation of smaller, amidated peptide(s) from the proregion that exhibit neurobiological function, including an 11-amino-acid peptide named dopamine neuron stimulating peptide-11 (DNSP-11)...

article

Modulation of human α-synuclein aggregation by a combined effect of calcium and dopamine

Manish Kumar Jain, Rajiv Bhat, M.K. Jain, R. Bhat

Neurobiology of Disease > 2014 > 63 > Complete > 115-128

Parkinson's disease is characterized by the deposition of aggregated α-syn and its familial mutants into Lewy bodies leading to death of dopaminergic neurons. α-syn is involved in Ca(II) and dopamine (DA) signaling and their adequate balance inside neuronal cytoplasm is essential for maintaining healthy dopaminergic neurons. We have probed the binding energetics of Ca(II) and DA to human α-syn and...

article

Deep and beautiful. The reward prediction error hypothesis of dopamine

Matteo Colombo, M. Colombo

Studies in History and Philosophy of Biol & Biomed Sci > 2014 > 45 > Complete > 57-67

According to the reward-prediction error hypothesis (RPEH) of dopamine, the phasic activity of dopaminergic neurons in the midbrain signals a discrepancy between the predicted and currently experienced reward of a particular event. It can be claimed that this hypothesis is deep, elegant and beautiful, representing one of the largest successes of computational neuroscience. This paper examines this...

article

Apport des neurosciences dans la compréhension de la sexualité humaine

P. Njomnang Soh, E. Huyghe

Sexologies > 2013 > 22 > 4 > 143-149

Depuis la préhistoire, l’homme s’est intéressé à la structure et au fonctionnement du cerveau. Cependant, la neuroanatomie est de compréhension récente, et la neurophysiologie conserve beaucoup de zones d’ombre. Concernant l’apport des neurosciences à la sexologie, nous avons réalisé une lecture critique de la littérature en écartant tous les travaux sujets à controverse. Les zones cérébrales du cerveau...

article

Association between dopaminergic medications and nocturnal sleep in early-stage Parkinson's disease

Lama M. Chahine, Joseph Daley, Stacy Horn, John E. Duda, more

Parkinsonism and Related Disorders > 2013 > 19 > 10 > 859-863

Poor nocturnal sleep is common in Parkinson's disease (PD) and negatively impacts quality of life. There is little data on how dopaminergic drugs influence nocturnal sleep in PD, particularly in relation to medication timing. We examined the association between dopaminergic medications and subjective and objective nocturnal sleep in PD.Individuals with PD were recruited from the outpatient clinic...

article

Anti-aggressive effect elicited by coca-paste in isolation-induced aggression of male rats: Influence of accumbal dopamine and cortical serotonin

María Noel Meikle, José Pedro Prieto, Jessika Urbanavicius, Ximena López, more

Pharmacology, Biochemistry and Behavior > 2013 > 110 > Complete > 216-223

Coca-paste (CP), an illicit drug of abuse, has been frequently associated with aggressive and impulsive behaviors in humans. However, preclinical studies have not been carried out in order to characterize CP effects on aggression. The acute effect of CP, cocaine and caffeine (the main adulterant present in seized samples) on aggression was assessed using the isolation-induced aggression paradigm in...

article

Early manipulation of juvenile hormone has sexually dimorphic effects on mature adult behavior in Drosophila melanogaster

Kathryn J. Argue, Amber J. Yun, Wendi S. Neckameyer, K.J. Argue, more

Hormones and Behavior > 2013 > 64 > 4 > 589-597

Hormones are critical for the development, maturation, and maintenance of physiological systems; therefore, understanding their involvement during maturation of the brain is important for the elucidation of mechanisms by which adults become behaviorally competent. Changes in exogenous and endogenous factors encountered during sexual maturation can have long lasting effects in mature adults. In this...

article

Nutritional Controls of Food Reward

Maria F. Fernandes, Sandeep Sharma, Cecile Hryhorczuk, Stephanie Auguste, more

Canadian Journal of Diabetes > 2013 > 37 > 4 > 260-268

The propensity to select and consume palatable nutrients is strongly influenced by the rewarding effects of food. Neural processes integrating reward, emotional states and decision-making can supersede satiety signals to promote excessive caloric intake and weight gain. While nutritional habits are influenced by reward-based neural mechanisms, nutrition and its impact on energy metabolism, in turn,...

article

General preparation of novel core–shell heme protein–Au–polydopamine–Fe3O4 magnetic bionanoparticles for direct electrochemistry

Hua-Ping Peng, Ru-Ping Liang, Li Zhang, Jian-Ding Qiu, more

Journal of Electroanalytical Chemistry > 2013 > 700 > Complete > 70-76

Inspired by adhesive proteins secreted by mussels, a general biomolecule immobilization approach has been proposed to the synthesis of multifunctional core–shell heme protein–Au–polydopamine–Fe ₃ O ₄ magnetic bionanoparticles (heme protein–Au–PDA–Fe ₃ O ₄ MBNPs) using one-pot chemical polymerization. Scanning electron microscope, energy dispersive X-ray spectrometer,...

article

Dopaminergic dysfunction in abstinent dexamphetamine users: Results from a pharmacological fMRI study using a reward anticipation task and a methylphenidate challenge

M.L.J. Schouw, M.B. De Ruiter, A.M. Kaag, W. van den Brink, more

Drug and Alcohol Dependence > 2013 > 130 > 1-3 > 52-60

Dopamine (DA) is involved in systems governing motor actions, motivational processes and cognitive functions. Preclinical studies have shown that even relatively low doses of d-amphetamine (dAMPH) (equivalent to doses used in clinical Practice) can lead to DA neurotoxicity in rodents and non-human primates (Ricaurte et al., 2005).Therefore, we investigated the DAergic function in eight male recreational...

article

Alteration of dopaminergic innervation and voluntary movements after long period of thirst in a semi-desert rodent, Meriones shawi: Behavioral and immunohistochemical studies

Abdeljalil Elgot, Omar El Hiba, Halima Gamrani

Comptes rendus - Biologies > 2012 > 335 > 7 > 463-471

Dehydration is a powerful stimulus causing disequilibrium in homeostasis of water and electrolytes resulting from depletion in total body water. Most studies have focused on domestic and laboratory animals; however, the study of desert animals allows improved understanding about water balance and resistance to dehydration and associated behavioral changes, including those related to voluntary movements...

article

Sucres, addiction et obésité

S. H. Ahmed

Obésité > 2012 > 7 > 1 > 3-9

Résumé Après une analyse approfondie du concept médical d’addiction, cette revue décrit les recherches récentes sur l’addiction à la nourriture et aux sucres raffinés (ex. saccharose, fructose) et son rôle dans l’étiologie de l’obésité. Les recherches cliniques ont établi l’existence de cette forme d’addiction dont la prévalence est particulièrement élevée chez certaines personnes obèses. L’addiction...

article

Troubles des conduites alimentaires et addiction

B. Waysfeld

Obésité > 2012 > 7 > 1 > 36-41

Résumé Les troubles des conduites alimentaires peuvent être considérés comme un passage à l’acte qui court-circuite la représentation et la mentalisation. Ce passage à l’acte a ceci de particulier qu’il vise le corps propre et non l’environnement comme dans les formes psychopathiques classiques. Dans sa genèse, le processus est clairement lié au style de la relation mère-enfant au cours des premiers...

article

Implications anesthésiques du syndrome des jambes sans repos : observations cliniques et recommandations pratiques

E.G. Karroum, M. Raux, B. Riou, I. Arnulf

Annales francaises d'anesthesie et de reanimation > 2010 > 29 > 12 > 920-924

Le syndrome des jambes sans repos, ou syndrome d’Ekbom, est une affection neurologique sensitivomotrice fréquente, encore insuffisamment connue et probablement d’origine génétique. Les personnes affectées éprouvent un besoin impérieux de bouger les jambes au repos (assis ou allongé), parfois accompagné de paresthésies voire de douleurs des jambes, survenant le soir ou la nuit, et transitoirement calmé...

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Search results

Facile synthesis of boronic acid-functionalized magnetic nanoparticles for efficient dopamine extraction

Troubles moteurs tardifs induits par antipsychotiques : mise au point

Proposition pour une physiologie de la jouissance

Conduites d’alcoolisation

Nano-perovskite carbon paste composite electrode for the simultaneous determination of dopamine, ascorbic acid and uric acid

Dazed and confused: A molecular genetic approach to everyday cognitive failure

Dynamic changes in dopamine neuron function after DNSP-11 treatment: Effects in vivo and increased ERK 1/2 phosphorylation in vitro

Modulation of human α-synuclein aggregation by a combined effect of calcium and dopamine

Deep and beautiful. The reward prediction error hypothesis of dopamine

Apport des neurosciences dans la compréhension de la sexualité humaine

Association between dopaminergic medications and nocturnal sleep in early-stage Parkinson's disease

Anti-aggressive effect elicited by coca-paste in isolation-induced aggression of male rats: Influence of accumbal dopamine and cortical serotonin

Early manipulation of juvenile hormone has sexually dimorphic effects on mature adult behavior in Drosophila melanogaster

Nutritional Controls of Food Reward

General preparation of novel core–shell heme protein–Au–polydopamine–Fe3O4 magnetic bionanoparticles for direct electrochemistry

Dopaminergic dysfunction in abstinent dexamphetamine users: Results from a pharmacological fMRI study using a reward anticipation task and a methylphenidate challenge

Alteration of dopaminergic innervation and voluntary movements after long period of thirst in a semi-desert rodent, Meriones shawi: Behavioral and immunohistochemical studies

Sucres, addiction et obésité

Troubles des conduites alimentaires et addiction

Implications anesthésiques du syndrome des jambes sans repos : observations cliniques et recommandations pratiques

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