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Full-Face Mask Use during SCUBA Diving Counters Related Oxidative Stress and Endothelial Dysfunction
15 janvier 2022, Levenez, Morgan; LAMBRECHTS, Kate; Mrakic-Sposta, Simona; Vezzoli, Alessandra; Germonpré, Peter; Pique, Hadrien; Virgili, Fabi; Bosco, Gerardo; Lafere, Pierre; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Impaired flow mediated dilation (FMD), an index of vascular stress, is known after SCUBA diving. This is related to a dysfunction of nitric oxide (NO) availability and a disturbance of the redox status, possibly induced by hyperoxic/hyperbaric gas breathing. SCUBA diving is usually performed with a mask only covering "half face" (HF) and therefore forcing oral breathing. Nasal NO production is ...
Fluoxetine stimulates anti-inflammatory IL-10 cytokine production and attenuates sensory deficits in a rat model of decompression sickness
22 octobre 2015, Blatteau, Jean-Eric; De Maistre, Sébastien; LAMBRECHTS, Kate; Abraini, Jacques; Risso, Jean-Jacques; Vallée, Nicolas,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Despite "gold standard" hyperbaric oxygen treatment, 30% of patients suffering from neurological decompression sickness still exhibit incomplete recovery, including sensory impairments. Fluoxetine, a well-known antidepressant, is recognized as having anti-inflammatory effects in the setting of cerebral ischemia. In this study, we focused on the assessment of sensory neurological deficits and measurement ...
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 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: ...
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 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 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 ...
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 ...
Oxidative Stress Response Kinetics after 60 Minutes at Different (1.4 ATA and 2.5 ATA) Hyperbaric Hyperoxia Exposures
02 août 2023, Leveque, Clément; Mrakic-Sposta, Simona; THEUNISSEN, Sigrid; Germonpré, Peter; LAMBRECHTS, Kate; Vezzoli, Alessandra; Bosco, Gerardo; Levenez, Morgan; Lafère, Pierre; Guerrero, François; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Hyperbaric oxygen therapy (HBOT) is a therapeutical approach based on exposure to pure oxygen in an augmented atmospheric pressure. Although it has been used for years, the exact kinetics of the reactive oxygen species (ROS) between different pressures of hyperbaric oxygen exposure are still not clearly evidenced. In this study, the metabolic responses of hyperbaric hyperoxia exposures for 1 h at ...
Oxidative Stress Response Kinetics after 60 Minutes at Different Levels (10% or 15%) of Normobaric Hypoxia Exposure
15 juin 2023, Leveque, Clément; Mrakic-Sposta, Simona; THEUNISSEN, Sigrid; Germonpré, Peter; LAMBRECHTS, Kate; Vezzoli, Alessandra; Gussoni, Maristella; Levenez, Morgan; Lafère, Pierre; Guerrero, François; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
In this study, the metabolic responses of hypoxic breathing for 1 h to inspired fractions of 10% and 15% oxygen were investigated. To this end, 14 healthy nonsmoking subjects (6 females and 8 males, age: 32.2 ± 13.3 years old (mean ± SD), height: 169.1 ± 9.9 cm, and weight: 61.6 ± 16.2 kg) volunteered for the study. Blood samples were taken before, and at 30 min, 2 h, 8 h, 24 h, and 48 h after a 1 ...