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Fluoxetine Protection in Decompression Sickness in Mice is Enhanced by Blocking TREK-1 Potassium Channel with the "spadin" Antidepressant
16 février 2016, Vallée, Nicolas; LAMBRECHTS, Kate; De Maistre, Sébastien; Royal, Perrine; Mazella, Jean; Borsotto, Marc; Heurteaux, Catherine; Abraini, Jacques; RIsso, Jean-Jacques; Blatteau, Jean-Eric,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
In mice, disseminated coagulation, inflammation, and ischemia induce neurological damage that can lead to death. These symptoms result from circulating bubbles generated by a pathogenic decompression. Acute fluoxetine treatment or the presence of the TREK-1 potassium channel increases the survival rate when mice are subjected to an experimental dive/decompression protocol. This is a paradox because ...
Age, weight and decompression sickness in rats
16 mars 2016, Buzzacott, Peter; Theron, Michaël; Mazur, Aleksandra; Wang, Qiong; LAMBRECHTS, Kate; Eftedal, Ingrid; Berenji, Simin,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Objective: The aim of this study was to determine if, after controlling for weight, age is associated with decompression sickness (DCS) in rats. Methods: Following compression-decompression, male rats aged 11 weeks were observed for DCS. After two weeks recovery, surviving rats were re-dived using the same compression-decompression profile. Results: In this experiment, there was a clear difference ...
Effect of simulated air dive and decompression sickness on the plasma proteome of rats
12 avril 2016, Lautridou, Jacky; Pichereau, Vianney; Artigaud, Sébastien; Buzzacott, Peter; Wang, Qiong; Bernay, Benoit; Driad, Sabrina; Mazur, Aleksandra; LAMBRECHTS, Kate; Theron, Michaël; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: Decompression sickness (DCS) is a poorly understood systemic disease caused by inadequate desaturation following a reduction in ambient pressure. Although recent studies highlight the importance of circulating factors, the available data are still puzzling. In this study, we aimed to identify proteins and biological pathways involved in the development of DCS in rats.
Experimental design: ...
Venous gas emboli are involved in post-dive macro, but not microvascular dysfunction
21 janvier 2017, LAMBRECHTS, Kate; BALESTRA, Costantino; Theron, Michaël; Henckes, Anne; Galinat, Hubert; Mignant, Fanny; Belhomme, Marc; Pontier, Jean-Michel; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: Previous studies have shown vascular dysfunction of main conductance arteries and microvessels after diving. We aim to evaluate the impact of bubble formation on vascular function and haemostasis. To achieve this, we used a vibration preconditioning to influence bubble levels without changing any other parameters linked to the dive.
Methods: Twentty-six divers were randomly assigned to ...
Tirofiban, a Glycoprotein IIb/IIIa Antagonist, Has a Protective Effect on Decompression Sickness in Rats: Is the Crosstalk Between Platelet and Leukocytes Essential?
11 juillet 2018, LAMBRECHTS, Kate; Demaistre, Sébastien; Blatteau, Jean-Eric; Risso, Jean-Jacques; Vallée, Nicolas,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
In its severest forms, decompression sickness (DCS) may extend systemically and/or induce severe neurological deficits, including paralysis or even death. It seems that the sterile and ischemic inflammatory phenomena are consecutive to the reaction of the bubbles with the organism and that the blood platelet activation plays a determinant role in the development of DCS. According to the hypotheses ...
Simulated air dives induce superoxide, nitric oxide, peroxynitrite, and Ca 2+ alterations in endothelial cells
03 avril 2019, Wang, Qiong; Guerrero, François; LAMBRECHTS, Kate; Theron, Michaël,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Human diving is known to induce endothelial dysfunction. The aim of this study was to decipher the mechanism of ROS production during diving through the measure of mitochondrial calcium concentration, peroxynitrite, NO°, and superoxide towards better understanding of dive-induced endothelial dysfunction. Air diving simulation using bovine arterial endothelial cells (compression rate 101 kPa/min to ...
Factors influencing the severity of long-term sequelae in fishermen-divers with neurological decompression sickness
31 mars 2020, Blatteau, Jean-Eric; LAMBRECHTS, Kate; Ruffez, Jean,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Introduction: Numerous studies have been conducted to identify the factors influencing the short-term prognosis for neurological decompression sickness (DCS). However, the long-term sequelae are rarely assessed. The purpose of this study to investigate the factors likely to influence the long-term prognosis.
Methods: Twenty-seven Vietnamese fishermen-divers who on average 9 (SD 6) years beforehand ...
Endothelial function may be enhanced in the cutaneous microcirculation after a single air dive
30 septembre 2020, Guerrero, François; LAMBRECHTS, Kate; Wang, Qiong; Mazur, Aleksandra; Marroni, Alessandro,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Introduction: The effects of scuba diving on the vessel wall have been studied mainly at the level of large conduit arteries. Data regarding the microcirculation are scarce and indicate that these two vascular beds are affected differently by diving.
Methods: We assessed the changes in cutaneous microcirculation before an air scuba dive, then 30 min and 24 h after surfacing. Endothelium-dependent ...
Increasing Oxygen Partial Pressures Induce a Distinct Transcriptional Response in Human PBMC: A Pilot Study on the “Normobaric Oxygen Paradox”
05 janvier 2021, Fratantonio, Deborah; Virgili, Fabio; Zucchi, Alessandro; LAMBRECHTS, Kate; Latronico, Tiziana; Lafère, Pierre; Germonpré, Pierre; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
The term "normobaric oxygen paradox" (NOP), describes the response to the return to normoxia after a hyperoxic event, sensed by tissues as oxygen shortage, and resulting in up-regulation of the Hypoxia-inducible factor 1alpha (HIF-1alpha) transcription factor activity. The molecular characteristics of this response have not been yet fully characterized. Herein, we report the activation time trend ...
Heart Rate Variability During a Standard Dive: A Role for Inspired Oxygen Pressure?
13 août 2021, Lafère, Pierre; LAMBRECHTS, Kate; GERMONPRÉ, Peter; Balestra, Ambre; Germonpré, Faye-Lisa; Marroni, Alessandro; Cialoni, Danilo; Bosco, Gerardo; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Introduction: Heart rate variability (HRV) during underwater diving has been infrequently investigated because of environment limitations and technical challenges. This study aims to analyze HRV changes while diving at variable hyperoxia when using open circuit (OC) air diving apparatus or at constant hyperoxia using a closed-circuit rebreather (CCR). We used HRV analysis in time and frequency domain ...