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      Call for Papers: Green Renal Replacement Therapy: Caring for the Environment

      Submit here before September 30, 2024

      About Blood Purification: 3.0 Impact Factor I 5.6 CiteScore I 0.83 Scimago Journal & Country Rank (SJR)

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      Kidney-lung crosstalk in the critically ill patient.

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      Publication date:
      Journal: Blood purification
      Keywords: Acute Kidney Injury, complications, epidemiology, mortality, physiopathology, Acute Lung Injury, Critical Illness, Humans, Kidney, Lung

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          Abstract

          Despite advances in renal replacement therapy, the mortality of acute kidney injury (AKI) has remained high, especially when associated with distant organ dysfunction such as acute lung injury (ALI). Mortality rates for combined AKI/ALI reach 80% in critically ill patients. While the clinical presentation of AKI-associated ALI is characterized by increased pulmonary edema, a defining feature of the syndrome, the AKI-induced lung effects extend beyond simple volume overload. Furthermore, ALI and associated mechanical ventilation frequently lead to a decline in renal hemodynamics, structure and function. New experimental data have emerged in recent years focusing on the interactive effects of kidney and lung dysfunction, and these studies have highlighted the pathophysiological importance of proinflammatory and proapoptotic pathways as well as the complex nature of interorgan crosstalk. This review will examine our current understanding of the deleterious kidney-lung crosstalk in the critically ill.

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          Acute kidney injury, mortality, length of stay, and costs in hospitalized patients.

          Glenn Chertow, Elisabeth Burdick, Melissa M Honour … (2005)
          The marginal effects of acute kidney injury on in-hospital mortality, length of stay (LOS), and costs have not been well described. A consecutive sample of 19,982 adults who were admitted to an urban academic medical center, including 9210 who had two or more serum creatinine (SCr) determinations, was evaluated. The presence and degree of acute kidney injury were assessed using absolute and relative increases from baseline to peak SCr concentration during hospitalization. Large increases in SCr concentration were relatively rare (e.g., >or=2.0 mg/dl in 105 [1%] patients), whereas more modest increases in SCr were common (e.g., >or=0.5 mg/dl in 1237 [13%] patients). Modest changes in SCr were significantly associated with mortality, LOS, and costs, even after adjustment for age, gender, admission International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis, severity of illness (diagnosis-related group weight), and chronic kidney disease. For example, an increase in SCr >or=0.5 mg/dl was associated with a 6.5-fold (95% confidence interval 5.0 to 8.5) increase in the odds of death, a 3.5-d increase in LOS, and nearly 7500 dollars in excess hospital costs. Acute kidney injury is associated with significantly increased mortality, LOS, and costs across a broad spectrum of conditions. Moreover, outcomes are related directly to the severity of acute kidney injury, whether characterized by nominal or percentage changes in serum creatinine.
          Article 0 comments Cited 954 times – based on 0 reviews     Review now
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            Carbon monoxide has anti-inflammatory effects involving the mitogen-activated protein kinase pathway.

            L Otterbein, F H Bach, J. Alam … (2000)
            The stress-inducible protein heme oxygenase-1 provides protection against oxidative stress. The anti-inflammatory properties of heme oxygenase-1 may serve as a basis for this cytoprotection. We demonstrate here that carbon monoxide, a by-product of heme catabolism by heme oxygenase, mediates potent anti-inflammatory effects. Both in vivo and in vitro, carbon monoxide at low concentrations differentially and selectively inhibited the expression of lipopolysaccharide-induced pro-inflammatory cytokines tumor necrosis factor-alpha, interleukin-1beta, and macrophage inflammatory protein-1beta and increased the lipopolysaccharide-induced expression of the anti-inflammatory cytokine interleukin-10. Carbon monoxide mediated these anti-inflammatory effects not through a guanylyl cyclase-cGMP or nitric oxide pathway, but instead through a pathway involving the mitogen-activated protein kinases. These data indicate the possibility that carbon monoxide may have an important protective function in inflammatory disease states and thus has potential therapeutic uses.
            Article 0 comments Cited 397 times – based on 0 reviews     Review now
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              Injurious mechanical ventilation and end-organ epithelial cell apoptosis and organ dysfunction in an experimental model of acute respiratory distress syndrome.

              Yumiko Imai, Jean Parodo, Osamu Kajikawa … (2015)
              Recent clinical trials have demonstrated a decrease in multiple organ dysfunction syndrome (MODS) and mortality in patients with acute respiratory distress syndrome (ARDS) treated with a protective ventilatory strategy. To examine the hypothesis that an injurious ventilatory strategy may lead to end-organ epithelial cell apoptosis and organ dysfunction. In vivo animals: 24 rabbits with acid-aspiration lung injury were ventilated with injurious or noninjurious ventilatory strategies. In vitro: rabbit epithelial cells were exposed to plasma from in vivo rabbit studies. In vivo human: plasma samples from patients included in a previous randomized controlled trial examining a lung protective strategy were analyzed (lung protection group, n = 9 and controls, n = 11). In vivo animals: biochemical markers of liver and renal dysfunction; apoptosis in end organs. In vitro: induction of apoptosis in LLC-RK1 renal tubular epithelial cells. In vivo human: correlation of plasma creatinine and soluble Fas ligand. The injurious ventilatory strategy led to increased rates of epithelial cell apoptosis in the kidney (mean [SE]: injurious, 10.9% [0.88%]; noninjurious, 1.86% [0.17%]; P<.001) and small intestine villi (injurious, 6.7% [0.66%]; noninjurious, 0.97% [0.14%]; P<.001), and led to the elevation of biochemical markers indicating renal dysfunction in vivo. Induction of apoptosis was increased in LLC-RK1 cells incubated with plasma from rabbits ventilated with injurious ventilatory strategy at 4 hours (P =.03) and 8 hours (P =.002). The Fas:Ig, a fusion protein that blocks soluble Fas ligand, attenuated induction of apoptosis in vitro. There was a significant correlation between changes in soluble Fas ligand and changes in creatinine in patients with ARDS (R = 0.64, P =.002). Mechanical ventilation can lead to epithelial cell apoptosis in the kidney and small intestine, accompanied by biochemical evidence of organ dysfunction. This may partially explain the high rate of MODS observed in patients with ARDS and the decrease in morbidity and mortality in patients treated with a lung protective strategy.
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                Author and article information

                Journal
                PubMed ID:: 19439927
                PMC ID:: 2914422
                DOI:: 10.1159/000218087

                ScienceOpen disciplines: Chemistry
                Keywords: Acute Kidney Injury,complications,epidemiology,mortality,physiopathology,Acute Lung Injury,Critical Illness,Humans,Kidney,Lung
                Data availability:
                ScienceOpen disciplines: Chemistry
                Keywords: Acute Kidney Injury, complications, epidemiology, mortality, physiopathology, Acute Lung Injury, Critical Illness, Humans, Kidney, Lung

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