Publications by authors named "Alexandrine Bertaud"

Decompression sickness (DCS) with neurological disorders is the leading cause of major diving accidents treated in hyperbaric chambers. Exposure to high levels of CO during diving is a safety concern for occupational groups at risk of DCS. However, the effects of prior exposure to CO have never been evaluated.

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Cardiac fibrosis constitutes irreversible necrosis of the heart muscle as a consequence of different acute (myocardial infarction) or chronic (diabetes, hypertension, …) diseases but also due to genetic alterations or aging. Currently, there is no curative treatment that is able to prevent or attenuate this phenomenon that leads to progressive cardiac dysfunction and life-threatening outcomes. This review summarizes the different targets identified and the new strategies proposed to fight cardiac fibrosis.

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Article Synopsis
  • The study investigates how mechanical loading affects the structure and mechanical properties of the Achilles tendon enthesis after deconditioning from hindlimb suspension in mice.
  • Key findings include a severe reduction in the non-calcified fibrocartilage surface area and collagen disorganization after 14 days of unloading, but reloading for 6 days improved these features and enhanced collagen II expression.
  • The research highlights that unloading decreased the stiffness of the enthesis and changed the failure site, but reloading restored the original function, which is important for countermeasure exercises in spaceflight contexts.
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Article Synopsis
  • - CD146 is an adhesion molecule found mainly in the vascular system and plays a crucial role in angiogenesis, with a soluble variant (sCD146) acting as an angiogenic factor present in blood.
  • - During pregnancy, CD146 is specifically expressed in the extravillous trophoblasts, where sCD146 regulates their migration and invasion, impacting placental development.
  • - The review highlights the importance of measuring sCD146 levels in pregnant women and IVF embryo supernatants to predict pregnancy complications, such as preeclampsia, and suggests its potential as a biomarker for placental health and therapeutic targets.
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Systemic sclerosis (SSc) is an autoimmune disorder characterized by vascular damage, excessive fibrosis and abnormal T cells immune-regulation. CD146 is an adhesion molecule essentially expressed in the vascular system, but also on TH17 lymphocytes. In view of the recently described role of CD146 in SSc, we hypothesized an involvement of CD146 positive TH17 cells in this disease.

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Cell-based therapies constitute a real hope for the treatment of ischaemic diseases. One of the sources of endothelial progenitors for autologous cell therapy is Endothelial Colony Forming Cells (ECFC) that can be isolated from peripheral blood. However, their use is limited by their low number in the bloodstream and the loss of their stem cell phenotype associated with the acquisition of a senescent phenotype in culture.

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Although progress was made in in vitro fertilization (IVF) techniques, the majority of embryos transferred fail to implant. Morphology embryo scoring is the standard procedure for most of IVF centres for choosing the best embryo, but remains limited since even the embryos classified as "top quality" may not implant. As it has been shown that i) CD146 is involved in embryo implantation and ii) membrane form is shed to generate soluble CD146 (sCD146), we propose that sCD146 in embryo supernatants may constitute a new biomarker of embryo selection.

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