Search results for "D2"
showing 10 items of 2418 documents
Growth and differentiation factor 11 (GDF11): Functions in the regulation of erythropoiesis and cardiac regeneration
2015
International audience; Members of the TGF-β superfamily transduce their signals through type I and II receptor serine/threonine kinases. The binding of activins to activin type IIA (ActRIIA) or type IIB (ActRIIB) receptors induces the recruitment and phosphorylation of an activin type I receptor (ALK4 and/or ALK7), which then phosphorylates the Smad2 and Smad3 intracellular signaling proteins. The regulation of members of the TGF-β family is known to be complex, because many proteins able to bind the ligands and inhibit their activities have been identified. Growth and differentiation factor 11 (Gdf11) belongs to the TGF-β family. GDF11, like other members of the TGF-β superfamily, is prod…
Cerebral protection against ischemia by locomotor activity in gerbils. Underlying mechanisms.
1995
Background and Purpose A previous communication of this laboratory demonstrated reduced mortality and neuronal damage by spontaneous locomotor activity preceding forebrain ischemia in Mongolian gerbils. The present experiments seek to elucidate potential mechanisms of protection by measurement of cerebral blood flow, cerebral tissue conductance as an indicator of ischemic cell swelling, and the cerebral release of eicosanoids. Methods Gerbils were maintained either in conventional cages (nonrunners) or with free access to running wheels (runners) for 2 weeks preceding 15 minutes of forebrain ischemia. During ischemia and 2.5 hours of reperfusion, cerebral tissue conductance was determined …
Alteration of dopamine D2/D3 receptor binding in patients with juvenile myoclonic epilepsy
2010
Summary Purpose: To quantify extrastriatal and striatal D2/D3 receptor binding in patients with juvenile myoclonic epilepsy (JME) using the high-affinity dopamine D2/D3 receptor positron emission tomography (PET) ligand 18F-Fallypride ([18F]FP). Methods: Twelve patients with JME and 21 age-matched control subjects were studied. Dynamic images (180 min) were acquired after injection of [18F]FP. Patients had been seizure-free of all seizure types for at least 10 days before scanning. Parametric images of binding potential (BP) were created using the simplified reference tissue model. The images were stereotactically normalized using a ligand-specific template. We performed a voxel-based ana…
Dopamine agonists in schizophrenia: a review.
1995
Although it is unlikely that the different types of course and severity of schizophrenia are caused by one neurochemical abnormality alone, indirect pharmacological evidence still suggests a relative excess of dopaminergic activity being implicated in the pathogenesis of most of the schizophrenic symptoms, e.g. positive symptomatology. Synthesis and release of dopamine as well as firing rates of dopaminergic neurons are controlled by stimulation of autoreceptors via a negative feedback regulation. Investigations on therapeutic effects of autoreceptor-nonselective dopamine agonists in schizophrenia have yielded inconsistent results. Dopamine autoreceptor agonists like pramipexole, roxindole,…
Induction of dendritic cell maturation and modulation of dendritic cell-induced immune responses by prostaglandins
2000
Dendritic cells (DC) are the most potent antigen-presenting cells of the immune system. In this study we investigated the effects of various prostaglandins (PG) on the stimulatory capacity of DC. DC were generated from peripheral progenitor cells in the presence of IL-4 and GM-CSF and stimulated with IL-1, IL-6 and TNF-alpha on day 7. Simultaneously, PG (PGD(2), PGE(1), PGE(2), PGF(2 alpha), PGI(2)) were added at various concentrations (10(-5) to 10(-9) M) on day 7. In all experiments, PGE(2) had the most potent influence on the maturation of the DC, followed by other PG in the order PGE(1) > PGD(2) > PGF(2 alpha) > PGI(2). In addition, the expression of the surface molecules CD40, CD54, CD…
Characterization of the synthetic cannabinoid MDMB-CHMCZCA
2016
The synthetic cannabinoid MDMB-CHMCZCA was characterized by various spectroscopic techniques including NMR spectroscopy and tandem mass spectrometry. The synthetic sample was found to be of S-configuration by VCD spectroscopy and comparison of the data with DFT calculations, while ECD spectroscopy was found to be inconclusive in this case. The enantiomeric purity of samples from test purchases and police seizures was assessed by a self-developed chiral HPLC method.
Encapsulation of Vitamins A and E as Spray-Dried Additives for the Feed Industry
2020
Encapsulated fat-soluble powders containing vitamin A (VA) and E (VE) were prepared as a feasible additive for extruded feed products. The effect of the encapsulating agents (Capsul-CAP®
Cannabidiol Treatment Might Promote Resilience to Cocaine and Methamphetamine Use Disorders: A Review of Possible Mechanisms
2019
Currently, there are no approved pharmacotherapies for addiction to cocaine and other psychostimulant drugs. Several studies have proposed that cannabidiol (CBD) could be a promising treatment for substance use disorders. In the present work, the authors describe the scarce preclinical and human research about the actions of CBD on the effects of stimulant drugs, mainly cocaine and methamphetamine (METH). Additionally, the possible mechanisms underlying the therapeutic potential of CBD on stimulant use disorders are reviewed. CBD has reversed toxicity and seizures induced by cocaine, behavioural sensitization induced by amphetamines, motivation to self-administer cocaine and METH, context- …
Les vicissituds de la traducció al castellà d’elements heroics i medievals del Canigó, de Jacint Verdaguer. El cas de «La Maladeta»
2014
Resum: En aquest article s’estudien les dificultats de traduir «La Maladeta», un passatge de Canigó, de Jacint Verdaguer. Creiem que aquest fragment és prou representatiu de la temàtica del poema èpic verdaguerià, ja que ha estat un dels més traduïts a totes les llengües i, a més, conté elements heroics i medievals del poema. És per això que hem cregut oportú de fer l’anlàlisi de la traducció dels fragments, per poder treure’n unes conclusions que ens serveixin per avaluar la qualitat de cada versió.Paraules clau: Verdaguer, Canigó, medieval, traducció. Abstract: In this article we study the translation’s difficulties of «La Maladeta», an extract of Canigó by Jacint Verdaguer. We think that…
Josefa Verride y Martina de los Ángeles. El difícil camino hacia la santidad.
2016
Resumen: A través de la información que nos proporcionan las vidas de Josefa Verride, tercera de la orden dominica en Huesca y Martina de los Ángeles, religiosa de la misma orden, fundadora del convento de san Pedro de Benabarre, pretendo aportar nuevas ideas acerca del proceso de adquisición de la fama de santidad de algunas mujeres en la Edad Moderna española. Las órdenes religiosas debieron idear estrategias que ayudasen a legitimar y consolidar la fama de santidad de estas mujeres. Una de estas estrategias fue la vinculación de las religiosas con otras mujeres con fama de santidad, creando genealogías femeninas que les permitiesen perpetuar su memoria y prestigio a lo largo del tiempo. …