Parcourir par auteur "Wang, Qiong"
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Age, weight and decompression sickness in rats
16 mars 2016, HE Bruxelles BrabantArticle scientifiqueObjective: 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 a single, open-sea, air scuba dive on human micro- and macrovascular function
15 août 2013, ; Pontier, Jean-Michel; BALESTRA, Costantino
; Mazur, Aleksandra; Wang, Qiong; Buzzacott, Peter; Theron, Michaël; Mansourati, Jacques; Guerrero, François, HE Bruxelles Brabant
Article scientifiquePurpose: 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, HE Bruxelles BrabantArticle scientifiqueWe 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 simulated air dive and decompression sickness on the plasma proteome of rats
12 avril 2016, HE Bruxelles BrabantArticle scientifiquePurpose: 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, HE Bruxelles BrabantArticle scientifiqueIntroduction: 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, HE Bruxelles BrabantArticle scientifiqueIntroduction: 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 ... -
Influence of decompression sickness on vasocontraction of isolated rat vessels
18 février 2015, HE Bruxelles BrabantArticle scientifiqueStudies conducted in divers indicate that endothelium function is impaired following a dive even without decompression sickness (DCS). Our previous experiment conducted on rat isolated vessels showed no differences in endothelium-dependent vasodilation after a simulated dive even in the presence of DCS, while contractile response to phenylephrine was progressively impaired with increased decompression ... -
Mechanism of action of antiplatelet drugs on decompression sickness in rats: a protective effect of anti-GPIIbIIIa therapy
15 mai 2015, HE Bruxelles BrabantArticle scientifiqueLiterature highlights the involvement of disseminated thrombosis in the pathophysiology of decompression sickness (DCS). We examined the effect of several antithrombotic treatments targeting various pathways on DCS outcome: acetyl salicylate, prasugrel, abciximab, and enoxaparin. Rats were randomly assigned to six groups. Groups 1 and 2 were a control nondiving group (C; n = 10) and a control diving ... -
Simulated air dives induce superoxide, nitric oxide, peroxynitrite, and Ca 2+ alterations in endothelial cells
03 avril 2019, HE Bruxelles BrabantArticle scientifiqueHuman 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 ... -
A ternary model of decompression sickness in rats
01 décembre 2014, Buzzacott, Peter; ; Mazur, Aleksandra; Wang, Qiong; Papadopoulou, Virginie; Theron, Michaël; BALESTRA, Costantino; Guerrero, François, HE Bruxelles Brabant
Article scientifiqueBackground: 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, ...