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Sökning: WFRF:(Annane Djillali)

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1.
  • Bergquist, Maria (författare)
  • Glucocorticoid receptors in severe inflammation : Experimental and clinical studies
  • 2014
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Septic shock is one of the most common causes of mortality in intensive care, in spite of antibiotic treatment. Glucocorticoid treatment can be used to blunt an overwhelming immune response in severe inflammation. The varying effects of glucocorticoid treatment in sepsis are poorly understood, with consequences for the clinical guidelines for treatment. Glucocorticoids are potent anti-inflammatory mediators which exert their effects through the glucocorticoid receptor (GR). Deeper understanding about the mechanisms of GR signalling may help to guide and improve glucocorticoid treatment. The aim of this thesis was to analyse GR expression and binding capacity in experimental and human septic shock and severe inflammation with cellular specificity using flow cytometry. In the late phase of a murine sepsis model, we observed decreased GR expression in leukocytes. In a murine model of early endotoxic shock, we observed decreased GR binding capacity in spite of an increased expression, in neutrophils. Glucocorticoid treatment was beneficial only when administered early in both models. Compared to healthy subjects, GR expression was increased in leukocytes from patients during the initial sepsis phase, while GR binding capacity was only increased in lymphocytes and monocytes. In contrast, neutrophils and other leukocyte subsets displayed decreased GR binding capacity. Neutrophil numbers were increased in all patients with sepsis compared to healthy subjects. We also studied patients with burn injury after admission before any infectious event had likely occurred, and on day 7 post admission, when several of the patients had been diagnosed with sepsis. GR expression and binding capacity was increased in leukocytes on admission as compared to healthy subjects, and patients diagnosed with sepsis on day 7 had a further increased GR expression in T lymphocytes. GR binding capacity was decreased in proportion to the extent of the burn injury on day 14 post admission. In conclusion, sepsis and severe inflammation have significant impact on the expression and function of GR, likely to influence the efficiency of glucocorticoid treatment. In addition, glucocorticoid treatment is beneficial only when given early in these models of experimental sepsis.
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2.
  • Scheeren, Thomas W. L., et al. (författare)
  • Current use of inotropes in circulatory shock
  • 2021
  • Ingår i: Annals of Intensive Care. - : Springer. - 2110-5820. ; 11:1
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundTreatment decisions on critically ill patients with circulatory shock lack consensus. In an international survey, we aimed to evaluate the indications, current practice, and therapeutic goals of inotrope therapy in the treatment of patients with circulatory shock.MethodsFrom November 2016 to April 2017, an anonymous web-based survey on the use of cardiovascular drugs was accessible to members of the European Society of Intensive Care Medicine (ESICM). A total of 14 questions focused on the profile of respondents, the triggering factors, first-line choice, dosing, timing, targets, additional treatment strategy, and suggested effect of inotropes. In addition, a group of 42 international ESICM experts was asked to formulate recommendations for the use of inotropes based on 11 questions.ResultsA total of 839 physicians from 82 countries responded. Dobutamine was the first-line inotrope in critically ill patients with acute heart failure for 84% of respondents. Two-thirds of respondents (66%) stated to use inotropes when there were persistent clinical signs of hypoperfusion or persistent hyperlactatemia despite a supposed adequate use of fluids and vasopressors, with (44%) or without (22%) the context of low left ventricular ejection fraction. Nearly half (44%) of respondents stated an adequate cardiac output as target for inotropic treatment. The experts agreed on 11 strong recommendations, all of which were based on excellent (> 90%) or good (81–90%) agreement. Recommendations include the indications for inotropes (septic and cardiogenic shock), the choice of drugs (dobutamine, not dopamine), the triggers (low cardiac output and clinical signs of hypoperfusion) and targets (adequate cardiac output) and stopping criteria (adverse effects and clinical improvement).ConclusionInotrope use in critically ill patients is quite heterogeneous as self-reported by individual caregivers. Eleven strong recommendations on the indications, choice, triggers and targets for the use of inotropes are given by international experts. Future studies should focus on consistent indications for inotrope use and implementation into a guideline for circulatory shock that encompasses individualized targets and outcomes.
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