Publications by authors named "Alexandre Gauthier"

S-metolachlor and atrazine are among the most used and detected pesticides in surface freshwaters worldwide. Our objective was to test the effects of light intensity (100, 200, and 400 μmol photons m s), plant density (25 and 60 % coverage), herbicide concentration (20 and 200 μg L for S-metolachlor or 15 and 150 μg L for atrazine), and their interactions on the growth, physiology, and phytoremediation capacity of S. polyrhiza (duckweed).

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Hostility toward women is frequently examined as a risk factor for violence against women, but research on its antecedents is sparse. The aim of this study was to explore the developmental and psychological antecedents associated with hostility toward women in a Canadian sample of sexual aggressors of women. Drawing on Malamuth's confluence model of sexual aggression, we developed a multifactorial model of hostility toward women, using structural equation modeling.

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Several researchers have found that men who have committed sexual aggression have inadequate coping strategies (e.g., paraphilic sexual fantasies, substance abuse).

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Individuals who commit sexual offenses against children have been shown to be distinctive from adult offenders across both individual and crime characteristics. However, an examination of the literature shows that there are gaps in the research related to whether sadism manifests differently between those who target child compared to adult victims. The current study therefore aimed to explore the differences in the characteristics, crime-commission process, and the dimensions of sadism between sadistic crimes of children ( = 101) compared to those of adults ( = 433).

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Background: Although sadistic child sexual abuse (SCSA) is rare, existing typologies of child sexual abuse have identified the existence of sadistic subtypes in child molestation, as well in the sexual homicide of children. Nonetheless, no study has sought to determine whether there is heterogeneity in the manifestation of sexual sadism between sadistic child abusers.

Objective: The present study seeks to examine how SCSA manifests differently between offenders, and whether these differences are associated with specific victim, offender, and offense characteristics.

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In photoelectron spectroscopy, the measured electron momentum range is intrinsically related to the excitation photon energy. Low photon energies <10 eV are commonly encountered in laser-based photoemission and lead to a momentum range that is smaller than the Brillouin zones of most materials. This can become a limiting factor when studying condensed matter with laser-based photoemission.

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Purpose: Patients with acute severe asthma (ASA) may in rare cases require invasive mechanical ventilation (IMV). However, recent data on this issue are lacking.

Materials And Methods: In this retrospective and bicentric study conducted on a 10 year period, we investigate the in-hospital mortality in patients with ASA requiring IMV.

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Background: Along with pharmacological and mechanical recanalization, improving cerebral perfusion through the recruitment of collateral vessels during the acute phase of ischaemic stroke (IS) is a clinical challenge. Our objective was to assess the effectiveness and safety of Trendelenburg positioning (TP), a procedure intended to increase cerebral blood flow, on the outcome of IS.

Methods: Two cohorts of patients with an acute supratentorial IS related to a large artery occlusion were compared.

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We describe two serious Trametes polyzona pulmonary infections, which occurred in Réunion Island, in critically ill patients. The identification was performed using sequencing of the internal transcribed spacer region of ribosomal DNA and D1/D2 region of 28S rDNA. In one case, the significance of T.

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Uncontrolled proteolysis by neutrophil serine proteases (NSPs) in lung secretions is a hallmark of cystic fibrosis (CF). We have shown that the active neutrophil elastase, protease 3, and cathepsin G in CF sputum resist inhibition in part by exogenous protease inhibitors. This resistance may be due to their binding to neutrophil extracellular traps (NETs) secreted by the activated neutrophils in CF sputum and to genomic DNA released from senescent and dead neutrophils.

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Proteinase 3 (Pr3), the main target of anti-neutrophil cytoplasmic antibodies, is a neutrophil serine protease that may be constitutively expressed at the surface of quiescent circulating neutrophils. This raises the question of the simultaneous presence in the circulation of constitutive membrane-bound Pr3 (mPr3) and its plasma inhibitor alpha1-protease inhibitor (alpha1-Pi). We have looked at the fate of constitutive mPr3 at the surface of circulating blood neutrophils and of induced mPr3 on triggered neutrophils.

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EPI-hNE4 (depelstat) is a potent inhibitor of human neutrophil elastase derived from human inter-alpha-trypsin inhibitor and designed to control the excess proteolytic activity in the sputum of cystic fibrosis patients. We analyzed its resistance to the proteolysis it is likely to encounter at inflammatory sites in vivo. EPI-hNE4 resisted hydrolysis by neutrophil matrix metalloproteases (MMPs) and serine proteases that are released from activated neutrophils in inflammatory lung secretions, including MMP-8 and MMP-9, and the elastase-related protease 3 and cathepsin G.

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