Search results for "pines"

Actions of two GABAA receptor benzodiazepine-site ligands that are mediated via non-γ2-dependent modulation.

2011

The potent sedative-hypnotic zolpidem and the convulsant methyl-6,7-dimethoxy-4-ethyl-β-carboline-3-carboxylate (DMCM) act primarily by binding to the benzodiazepine site of the main inhibitory neurotransmitter receptor, the pentameric γ-aminobutyric acid type A receptor (GABA(A)). This binding depends critically on the wild-type F77 residue of the GABA(A) receptor γ2 subunit. Mice with γ2 subunit F77I point mutation (γ2I77 mouse line) lose the high-affinity nanomolar binding of these ligands as well as their most robust behavioral actions at low doses. Interestingly, the γ2I77 mice offer a tool to study the actions of these substances mediated via other possible binding sites of the GABA(A…

Modulation by fenoldopam (SKF 82526) and bromocriptine of the electrically evoked release of vasopressin from the rat neurohypophysis. Effects of dop…

1986

1. Single neurointermediate lobes were fixed by their stalks to a platinum wire electrode and incubated in Krebs-bicarbonate solution. Vasopressin release into the medium was determined by a radioimmunoassay. Vasopressin secretion was increased by electrical stimulation (15 Hz, 10 s trains with 10 s intervals for 10 min). 2. Fenoldopam (SKF 82526) had a dual effect on vasopressin release, 30 nM decreasing (by 30%) and 3 μM increasing (by 32%) the evoked vasopressin secretion. The facilitatory effect of fenoldopam was antagonized in a concentration-dependent manner by flupenthixol but not by sulpiride. Sulpiride (1 μM) prevented the inhibitory effect of fenoldopam (30 μM). 3. After pretreatm…

A preliminary study on the stability of benzodiazepines in blood and plasma stored at 4 degrees C.

1997

An approach to determine the stability of benzodiazepines and some of their metabolites (n = 13) by means of a routinely applied gas chromatographic method using electron capture detection was made in this preliminary study. Validation data of the method are given. Spiked blood and plasma samples were stored at 4 degrees C and analysed at selected times up to 240 days. The concentrations of all analytes had decreased to at least 60% of the original levels at the end of the observation period. A clear pattern of breakdown could not be established. The data obtained suggest that results from long-term stored samples should be interpreted cautiously. Further investigations concerning the stabi…

La medición de la felicidad en el trabajo y sus antecedentes : un estudio empírico en el area de alergología de los hospitales públicos españoles

2014

La búsqueda de la felicidad en el trabajo es un objetivo de enorme importancia para muchas personas y organizaciones. Sin embargo, existe una carencia importante la investigación acerca de cómo aumentarla (Chivato Pérez et al., 2011), así como una amplia dispersión de medidas relacionadas (Hackman, 2009). No se conoce ninguna medida que recoja con la suficiente amplitud la medición de la felicidad en el trabajo (Fisher, 2010), por lo que en este estudio proponemos un modelo integrativo que nos aporte la medida de este nuevo constructo. Proponemos que la felicidad en el trabajo se compone de tres constructos ya consolidados en la literatura. La primera hipótesis de esta investigación es que …

Sleep Apnea, Sleepiness, and Driving Risk

2019

Obstructive sleep apnea is associated with excessive daytime sleepiness in about 50% of cases, and with increased risk of driving accidents. Treatment with continuous positive airway pressure effectively decreases such risk, but compliance with continuous positive airway pressure treatment is often suboptimal. According to the European Union Directive on driving risk, retention of a driving license in patients with obstructive sleep apnea requires assessment of sleepiness and adherence to continuous positive airway pressure treatment, but there remains uncertainty on the optimal methods to assess sleepiness on a large scale.

Mordaza de gerga, a blasfemias de paño

Signat ala fi per Fr. Iuan Cortès Ossorio, aunque Uriarte indica que no es obra seva Sign.: A4

Vitamin C blocks inflammatory platelet-activating factor mimetics created by cigarette smoking.

1997

Cigarette smoking within minutes induces leukocyte adhesion to the vascular wall and formation of intravascular leukocyte-platelet aggregates. We find this is inhibited by platelet-activating factor (PAF) receptor antagonists, and correlates with the accumulation of PAF-like mediators in the blood of cigarette smoke-exposed hamsters. These mediators were PAF-like lipids, formed by nonenzymatic oxidative modification of existing phospholipids, that were distinct from biosynthetic PAF. These PAF-like lipids induced isolated human monocytes and platelets to aggregate, which greatly increased their secretion of IL-8 and macrophage inflammatory protein-1alpha. Both events were blocked by a PAF r…

Well-being and tourist experiences : a state of the art review of positive psychology studies

2017

Currently, well-being concerns individuals but also businesses and even countries. This article thus provides a synthesis of psychological researches on well-being and of those bringing closer well-being and tourism, this activity maintaining obvious links with well-being. The aim is to better understand their relationships and to offer, in particular to tourist operators, marketing recommendations suggested by the reviewed studies.

Standard additions-dilution method for absolute quantification in voltammetry of microparticles. Application for determining psychoactive 1,4-benzodi…

2013

A standard additions-dilution solid-state electrochemical method for the determination of psychoactive 1,4-benzodiazepine and antidepressants drugs used as adulterants in commercial slimming herbal formulations is described and compared with conventional standard addition method. The proposed method, based on the voltammetry of microparticles approach, permits quantify, via standard additions methodology, 1,4-benzodiazepine and antidepressants drugs in phytotherapeutic formulations with no need of sample dissolution using dilution with a reference electroactive compound. The method was used to measure 1,4-benzobenzodiazepines (clonazepam, flurazepam, alprazolam, midazolam, bromazepam, chlor…

Elucidating the constructs happiness and wellbeing: A mixed-methods approach

2015

International audience; In this study we examine the constructs "happiness" and "wellbeing" in a sample of Canadian women and men in mid-adulthood. Through a sequential mixed-methods approach, we utilize Sen and Nussbaum's conceptualizations of capabilities to inform the themes generated from semi-structured interviews. We find that participants understand happiness and wellbeing as two distinct constructs that are illuminated in the metaphors happiness as balance and the gears of wellbeing. Second, we corroborate these constructs through a principal component analysis of questionnaire data. We conclude that happiness and wellbeing are not static entities, but rather iterative processes tha…