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A ternary model of decompression sickness in rats
01 décembre 2014, Buzzacott, Peter; LAMBRECHTS, Kate; Mazur, Aleksandra; Wang, Qiong; Papadopoulou, Virginie; Theron, Michaël; BALESTRA, Costantino; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Background: Decompression sickness (DCS) in rats is commonly modelled as a binary outcome. The present study aimed to develop a ternary model of predicting probability of DCS in rats, (as no-DCS, survivable-DCS or death), based upon the compression/decompression profile and physiological characteristics of each rat.
Methods: A literature search identified dive profiles with outcomes no-DCS, ...
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 ...
Colonic Fermentation Promotes Decompression sickness in Rats
08 février 2016, Demaistre, Sébastien; Vallée, Nicolas; Gempp, Emmanuel; LAMBRECHTS, Kate; Louge, Pierre; Duchamp, Claude; Blatteau, Jean-Eric,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Massive bubble formation after diving can lead to decompression sickness (DCS). During dives with hydrogen as a diluent for oxygen, decreasing the body's H2 burden by inoculating hydrogen-metabolizing microbes into the gut reduces the risk of DCS. So we set out to investigate if colonic fermentation leading to endogenous hydrogen production promotes DCS in fasting rats. Four hours before an experimental ...
Effect of a single, open-sea, air scuba dive on human micro- and macrovascular function
15 août 2013, LAMBRECHTS, Kate; Pontier, Jean-Michel; BALESTRA, Costantino; Mazur, Aleksandra; Wang, Qiong; Buzzacott, Peter; Theron, Michaël; Mansourati, Jacques; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: Previous studies have shown that bubble formation induced endothelial damage on conduit arteries. We aim to evaluate the effect of diving on microvascular and macrovascular function.
Methods: Nine divers took part in a SCUBA dive at 30 msw (400 kPa), for 30 min of bottom time. Pre- and post-dive, they underwent an assessment of endothelial-dependent (acetylcholine) and endothelial-independent ...
Effect of decompression-induced bubble formation on highly trained divers microvascular function
07 novembre 2013, LAMBRECHTS, Kate; Pontier, Jean-Michel; Mazur, Aleksandra; Pontier, Jean-Michel; Buzzacott, Peter; Morin, Jean; Wang, Qiong; Theron, Michaël; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
We previously showed microvascular alteration of both endothelium-dependent and -independent reactivity after a single SCUBA dive. We aimed to study mechanisms involved in this postdive vascular dysfunction. Ten divers each completed three protocols: (1) a SCUBA dive at 400 kPa for 30 min; (2) a 41-min duration of seawater surface head immersed finning exercise to determine the effect of immersion ...
Effect of oxygen-breathing during a decompression-stop on bubble-induced platelet activation after an open-sea air dive: oxygen-stop decompression
29 septembre 2013, Pontier, Jean-Michel; LAMBRECHTS, Kate,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: We highlighted a relationship between decompression-induced bubble formation and platelet micro-particle (PMP) release after a scuba air-dive. It is known that decompression protocol using oxygen-stop accelerates the washout of nitrogen loaded in tissues. The aim was to study the effect of oxygen deco-stop on bubble formation and cell-derived MP release.
Methods: Healthy experienced ...
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: ...
Effect of splenectomy on platelet activation and decompression sickness outcome in a rat model of decompression
01 septembre 2014, LAMBRECHTS, Kate; Pontier, Jean-Michel; Mazur, Aleksandra; Buzzacott, Peter; Goanvec, Christel; Wang, Qiong; Theron, Michaël; Belhomme, Marc; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Introduction: Splenic platelets have been recognized to have a greater prothrombotic potential than others platelets. We studied whether platelets released by splenic contraction could influence the severity and outcome of decompression sickness (DCS) and bubble-induced platelet activation.
Methods: Sixteen, male Sprague-Dawley rats were randomly assigned to either a control or a splenectomized ...
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 ...
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 ...