Search results for "Gide"

Characterization of 5-Hydroxytryptamine receptors in goat cerebral arteries

1995

1. In isolated goat middle cerebral artery segments, 5-hydroxytryptamine (5-HT, 10(-8)-3 x 10(-5) M) elicited concentration-dependent contractions with EC50 = 2.1 (1.9-2.5) x 10(-7) M and Emax = 64 +/- 2% of 50 mM KCl-induced contraction. 2. Several 5-HT receptor agonists were used: (a) the agonist of 5-HT2 receptors alpha-methyl-5-hydroxy-tryptamine (10(-7)-3 x 10(-4) M) induced strong contraction (51 +/- 6%); (b) the selective agonists of 5-HT1 receptors sumatriptan (10(-8)-10(-5) M) and 5-carboxamidotryptamine (10(-9)-10(-4) M) and the agonist of 5-HT1A receptors 8-hydroxy-2-(di-n-propylamino)tetralin (10(-7)-3 x 10(-5) M) induced weak contractions (8, 18 and 14%, respectively); and (c) …

Electrophysiological and microiontophoretic analysis of the habenulo-hippocampal circuit.

1991

In the cat, the effects of lateral habenula stimulation, at different ranges of frequency, on hippocampal units were studied. Habenular stimulation at low frequency excited, while at high frequency inhibited the greater part of hippocampal units. Moreover, in order to clarify the possible pathway involved in the habenulo-hippocampal circuit, the effects of iontophoretic acetylcholine and serotonin on hippocampal units were compared with those of habenular stimulation. Iontophoretic acetylcholine induced both excitatory and inhibitory responses while serotonin induced only inhibitory responses. Iontophoretic atropine blocked the effects of acetylcholine ejection but did not antagonize stimul…

Sublimazione e repressione: la crisi delle scienze europee e la musica barocca

2009

Dopo la Controriforma continua l'espansione e la sublimazione dell'eros, tipica del Rinascimento: fino al 1683 circa; quindi predomina la repressione dell'eros e lo sfruttamento delle energie vitali per la produzione industriale. Alla fluidità sonora della musica rinascimentale e barocca subentra improvvisamente la rigidezza sonora della musica dell'illuminismo e del rococò.

Contre l'autonomie et la clôture du texte : formes et ambiguïtés de la fiction moderniste européenne : (1910-1939)

2014

Although it has been a key concept of literary criticism in the English-speaking world for more than a half-century, modernism remains a relatively misunderstood notion in France, owing to its proximity to somewhat close concepts such as modernity and avant-garde, which it only partially overlaps. The concept is relevant to experimentation in all literary genres, but this study focuses on the novel, with texts by James Joyce, André Gide, Ramón Gómez de la Serna and Virginia Woolf. Those have often been mischaracterized by literary critics as either mimetic novels — though more realistic than realist novels — or more frequently as emblematic of the self-referential text, as defined by the do…

Rudolf Kassner et l'art de l'essai à Vienne (1900-1906)

2017

International audience; Rudolf Kassner (1873-1959) fréquente à la fin des années 1890 les milieux artistiques et intellectuels tant à Vienne qu'à Londres ou à Paris. Il noue alors des contacts avec de nombreux écrivains et artistes de son époque comme Hofmannsthal, Gide ou plus tard Rilke. Il décide d'écrire "sur la culture" et publie plusieurs ouvrages ainsi qu'une série d'essais consacrés la littérature, à l'esthétique ou à la philosophie. Influencé par ses lectures variées et cosmopolites, et porté par son admiration pour Nietzsche ou Kierkegaard, Kassner s'est imposé comme un commentateur attentif et clairvoyant des courants artistiques de son époque, en particulier de toutes les tendan…

Le culte des Lagides en Asie Mineure

2012

SURFACE AND MECHANISTIC PROPERTIES OF RECYCLED BITUMINOUS MIXTURES

2019

EXECUTIVE SUMMARY Problem Often, when the characteristics of a bituminous mixture are analised, there are major differences between in-lab and in-situ results. This is due to the fact that the procedures and techniques implemented during the design phase (in lab) may be different from those used on site. Then, is very important to be able to predict the main properties of a mixture particularly when innovative materials are used. For example, when crumb rubber is used, phisical and volumetric properties of mixes may change over time, in particular due to the swelling phenomenon that it alters different properties of the mixture (e.g., viscosity). This study aims to investigate the main aspe…

Spasmolytic Effects of Aphanizomenon Flos Aquae (AFA) Extract on the Human Colon Contractility.

2021

The blue-green algae Aphanizomenon flos aquae (AFA), rich in beneficial nutrients, exerts various beneficial effects, acting in different organs including the gut. Klamin® is an AFA extract particularly rich in β-PEA, a trace-amine considered a neuromodulator in the central nervous system. To date, it is not clear if β-PEA exerts a role in the enteric nervous system. The aims of the present study were to investigate the effects induced by Klamin® on the human distal colon mechanical activity, to analyze the mechanism of action, and to verify a β-PEA involvement. The organ bath technique, RT-PCR, and immunohistochemistry (IHC) were used. Klamin® reduced, in a concentration-dependent manner, …

Lateral habenula and hippocampus: A complex interaction raphe cells-mediated

1997

The study has shown an excitatory influence exerted by lateral habenula (LH) on hippocampal pyramidal cells. The modulatory influence is paradoxically serotonine-mediated; in fact all LH stimulation effects were abolished by intrahippocampal iontophoretic methysergide application. The data suggest the involvement of dorsal raphe nucleus. In fact, the dorsal raphe nucleus stimulation caused on hippocampus an expected inhibitory effect antagonized by intrahippocampal iontophoretic methysergide application. In the context of this neural structure we have highlighted a disinhibitory relation between two types of cells: slow serotonergic efferent neurones and fast GABAergic interneurones. The di…

Lateral habenula and hippocampal units: electrophysiological and iontophoretic study

1995

In previous works we studied, on cats, the effects of lateral habenula (LH) stimulation on hippocampal units. In particular, the results showed an excitation or an inhibition in relation to the stimulation frequency (0.5-3.0 Hz or 5.0-20 Hz, respectively). All the LH stimulation effects were antagonised by iontophoretic intrahippocampal application of methysergide (MS). In this series of experiments it was possible to demonstrate, on rats, that LH stimulation causes an excitatory effect in a major number of hippocampal units in relation to the frequency increase. The inhibitory effect by iontophoretic serotonine application and the reversible blockade of habenular modulation after iontophor…