Publications by authors named "I Malissin"

Article Synopsis
  • Doctors found tiny brain bleeds in some patients who were very sick from poison, but they don't know exactly why it happened.
  • Out of 2986 severely poisoned patients, 3 had these brain bleeds, mostly in a part of the brain called the corpus callosum.
  • The patients were very unwell and needed help breathing, and it's important for doctors to know about this possible problem, even if they don't know if it was caused by the poison.
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  • A study involving 20 COVID-19 cases identified cerebral microangiopathy in six patients, marked by changes in white matter and small artery diseases as seen on MRI.
  • The condition featured perivascular alterations such as vacuolization, macrophage clusters, and large axonal swellings, suggesting blood-brain barrier disruption without evidence of direct viral presence in the brain.
  • Detection of the SARS-CoV-2 spike protein in brain endothelial cells, particularly within the Golgi apparatus, indicates a unique interaction that might affect vascular permeability and contribute to long-term neurological effects of COVID-19.
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Metabolomics in clinical toxicology aim at reliably identifying and semi-quantifying a broad array of endogenous and exogenous metabolites using dedicated analytical methods. Here, we developed a three-step-based workflow to investigate the metabolic impact of the antidepressant drug venlafaxine in a poisoned patient who developed life-threatening cardiac failure managed with extracorporeal membrane oxygenation. Both targeted quantitative and untargeted semi-quantitative metabolomic analyses using liquid chromatography hyphenated to high-resolution tandem mass spectrometry were performed to determine the plasma kinetics of venlafaxine, -desmethyl-venlafaxine, and -desmethyl-venlafaxine and to identify sixteen different venlafaxine-derived metabolites including one unknown (, venlafaxine conjugated to a hexosyl-radical), respectively.

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Methadone and buprenorphine are the two maintenance treatments in opiate addicts authorised in France since the end of the 1990's. More recently, some African countries such as Senegal have implemented a new health policy focused on reducing the risks by encouraging the use of methadone as maintenance treatment. The objectives of maintenance therapy are to reduce morbidity and mortality related to the consumption of heroin and other street opioids, to promote the integration of drug users into the healthcare system, and more generally, to improve their social integration.

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Article Synopsis
  • ECLS (Extracorporeal Life Support) can enhance circulation in severe cases of cardiac dysfunction or arrest, particularly in patients poisoned by cardiotoxic substances.
  • The review focused on specific drugs, especially antiarrhythmics and aluminium phosphide, analyzing literature from the past 30 years and finding mostly single case reports with limited controlled studies.
  • While ECLS showed better survival rates in refractory cardiovascular failure (about 80%) compared to cardiac arrest (25%-66%), clearer selection criteria for its use in poisoned patients are needed due to the low-to-moderate evidence quality.
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