Management of Endotoxemia and Sepsis

A special issue of Journal of Clinical Medicine (ISSN 2077-0383). This special issue belongs to the section "Infectious Diseases".

Deadline for manuscript submissions: closed (30 May 2022) | Viewed by 14300

Special Issue Editor


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Guest Editor
Clinical Department of Anaesthesiology and Intensive Therapy, Wroclaw Medical University, Borowska Street 213, 50-556 Wroclaw, Poland
Interests: sepsis; septic shock endotoxemia; biomarkers; inflammation; blood purification; adsorption; coagulation disorders; multiorgan dysfunction syndrome
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Special Issue Information

Dear Colleagues,

Endotoxin is considered a key signaling molecule in the pathogenesis of shock—the higher the endotoxin level, the more severe the clinical symptoms. The dysfunction of vital organs and coagulation abnormalities often lead to the development of organ failure and death. Therefore, a therapy aimed at reducing the level of endotoxin may improve the clinical condition of patients and reduce mortality rates. In patients with sepsis, anti-endotoxin drug therapies have failed to show significant clinical benefits, and studies on the elimination of circulating endotoxins using extracorporeal methods such as adsorbent-based hemoperfusion or continuous renal replacement therapy have found inconsistent results. Therefore, studies on novel therapeutic strategies of neutralizing and eliminating endotoxins and accurate methods of endotoxin detection are vitally important for the future management of critically ill patients. In this Special Issue of the Journal of Clinical Medicine, we will discuss the etiology, clinical manifestations, diagnostic, and optimal strategies that can reduce endotoxemia and improve organ function. Preclinical research based on animal or human models as well as clinical studies including patients are welcome for submission.

Dr. Barbara Adamik
Guest Editor

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Keywords

  • endotoxin
  • lipopolysaccharide
  • shock
  • organ failure
  • renal replacement therapy
  • adsorption
  • microbiome
  • metabolic endotoxemia

Published Papers (4 papers)

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Research

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13 pages, 1174 KiB  
Article
Compartment-Specific Differences in the Activation of Monocyte Subpopulations Are Not Affected by Nitric Oxide and Glucocorticoid Treatment in a Model of Resuscitated Porcine Endotoxemic Shock
by Tomasz Skirecki, Barbara Adamik, Claes Frostell, Urszula Pasławska, Stanisław Zieliński, Natalia Glatzel-Plucińska, Mateusz Olbromski, Piotr Dzięgiel and Waldemar Gozdzik
J. Clin. Med. 2022, 11(9), 2641; https://doi.org/10.3390/jcm11092641 - 8 May 2022
Cited by 2 | Viewed by 1317
Abstract
Inhaled nitric oxide (iNO) remains one of the treatment modalities in shock, and in addition to its vasoactive properties, iNO exerts immunomodulatory effects. We used a porcine model of endotoxemia with shock resuscitation (control) and additional treatment with iNO and a steroid (treatment [...] Read more.
Inhaled nitric oxide (iNO) remains one of the treatment modalities in shock, and in addition to its vasoactive properties, iNO exerts immunomodulatory effects. We used a porcine model of endotoxemia with shock resuscitation (control) and additional treatment with iNO and a steroid (treatment group). After 20 h, bone marrow (BM), peripheral blood (PB), and bronchoalveolar lavage fluid (BALF) were collected to analyze the immunophenotype and mitochondrial membrane potential (Δφ) in three subsets of monocytes. In both groups, SLA-DR expression decreased twofold on the circulating CD14+CD163+ and CD14CD163+ monocytes, while it did not change on the CD14+CD163+. Δφ increased only in the CD14CD163+ subpopulation (0.8 vs. 2.0, p < 0.001). The analysis of compartment-specific alterations showed that nearly 100% of BALF CD14+CD163+ and CD14CD163+ monocytes expressed SLA-DR, and it was higher compared to PB (32% and 20%, p < 0.0001) and BM (93% and 67%, p < 0.001, respectively) counterparts. BALF CD14+CD163+ had a threefold higher Δφ than PB and BM monocytes, while the Δφ of the other subsets was highest in PB monocytes. We confirmed the compartmentalization of the monocyte response during endotoxemic shock, which highlights the importance of studying tissue-resident cells in addition to their circulating counterparts. The iNO/steroid treatment did not further impair monocyte fitness. Full article
(This article belongs to the Special Issue Management of Endotoxemia and Sepsis)
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13 pages, 810 KiB  
Article
Soluble Urokinase-Type Plasminogen Activator Receptor Levels as a Predictor of Kidney Replacement Therapy in Septic Patients with Acute Kidney Injury: An Observational Study
by Tomasz Skalec, Barbara Adamik, Katarzyna Kobylinska and Waldemar Gozdzik
J. Clin. Med. 2022, 11(6), 1717; https://doi.org/10.3390/jcm11061717 - 19 Mar 2022
Cited by 4 | Viewed by 2042
Abstract
The soluble urokinase-type plasminogen activator receptor (suPAR) is involved in the pathogenesis of acute kidney injury (AKI). Our goal was to establish the optimal suPAR cut-off point for predicting the need for kidney replacement therapy (KRT) use in sepsis patients and to analyze [...] Read more.
The soluble urokinase-type plasminogen activator receptor (suPAR) is involved in the pathogenesis of acute kidney injury (AKI). Our goal was to establish the optimal suPAR cut-off point for predicting the need for kidney replacement therapy (KRT) use in sepsis patients and to analyze survival rates based on the suPAR level, AKI diagnosis, and the requirement for KRT. In total, 51 septic patients were included (82% septic shock; 96% mechanically ventilated, 35% KRT). Patients were stratified according to the AKI diagnosis and the need for KRT into three groups: AKI(+)/KRT(+), AKI(+)/KRT(−), and AKI(−)/KRT(−). A control group (N = 20) without sepsis and kidney failure was included. Sepsis patients had higher levels of the suPAR than control (13.01 vs. 4.05 ng/mL, p < 0.001). On ICU admission, the suPAR level was significantly higher in the AKI(+)/KRT(+) group than in the AKI(+)/KRT(−) and AKI(−)/KRT(−) groups (18.5 vs. 10.6 and 9.5 ng/mL, respectively; p = 0.001). The optimal suPAR cut-off point for predicting the need for KRT was established at 10.422 ng/mL (area under the curve 0.801, sensitivity 0.889, specificity 0.636). Moreover, patients AKI(+)/KRT(+) had the lowest probability of survival compared to patients AKI(+)/KRT(−) and AKI(−)/KRT(−) (p = 0.0003). The results indicate that the suPAR measurements may constitute an important element in the diagnosis of a patient with sepsis. Full article
(This article belongs to the Special Issue Management of Endotoxemia and Sepsis)
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14 pages, 2364 KiB  
Review
Balanced Crystalloids versus Normal Saline in Adults with Sepsis: A Comprehensive Systematic Review and Meta-Analysis
by Azizullah Beran, Nehaya Altorok, Omar Srour, Saif-Eddin Malhas, Waleed Khokher, Mohammed Mhanna, Hazem Ayesh, Nameer Aladamat, Ziad Abuhelwa, Khaled Srour, Asif Mahmood, Nezam Altorok, Mohammad Taleb and Ragheb Assaly
J. Clin. Med. 2022, 11(7), 1971; https://doi.org/10.3390/jcm11071971 - 1 Apr 2022
Cited by 20 | Viewed by 6385
Abstract
The crystalloid fluid of choice in sepsis remains debatable. We aimed to perform a comprehensive meta-analysis to compare the effect of balanced crystalloids (BC) vs. normal saline (NS) in adults with sepsis. A systematic search of PubMed, EMBASE, and Web of Sciences databases [...] Read more.
The crystalloid fluid of choice in sepsis remains debatable. We aimed to perform a comprehensive meta-analysis to compare the effect of balanced crystalloids (BC) vs. normal saline (NS) in adults with sepsis. A systematic search of PubMed, EMBASE, and Web of Sciences databases through 22 January 2022, was performed for studies that compared BC vs. NS in adults with sepsis. Our outcomes included mortality and acute kidney injury (AKI), need for renal replacement therapy (RRT), and ICU length of stay (LOS). Pooled risk ratio (RR) and mean difference (MD) with the corresponding 95% confidence intervals (CIs) were obtained using a random-effect model. Fifteen studies involving 20,329 patients were included. Overall, BC showed a significant reduction in the overall mortality (RR 0.88, 95% CI 0.81–0.96), 28/30-day mortality (RR 0.87, 95% CI 0.79–0.95), and AKI (RR 0.85, 95% CI 0.77–0.93) but similar 90-day mortality (RR 0.96, 95% CI 0.90–1.03), need for RRT (RR 0.91, 95% CI 0.76–1.08), and ICU LOS (MD −0.25 days, 95% CI −3.44, 2.95), were observed between the two groups. However, subgroup analysis of randomized controlled trials (RCTs) showed no statistically significant differences in overall mortality (RR 0.92, 95% CI 0.82–1.02), AKI (RR 0.71, 95% CI 0.47–1.06), and need for RRT (RR 0.71, 95% CI 0.36–1.41). Our meta-analysis demonstrates that overall BC was associated with reduced mortality and AKI in sepsis compared to NS among patients with sepsis. However, subgroup analysis of RCTs showed no significant differences in both overall mortality and AKI between the groups. There was no significant difference in the need for RRT or ICU LOS between BC and NS. Pending further data, our study supports using BC over NS for fluid resuscitation in adults with sepsis. Further large-scale RCTs are necessary to validate our findings. Full article
(This article belongs to the Special Issue Management of Endotoxemia and Sepsis)
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13 pages, 651 KiB  
Review
The Rationale and Current Status of Endotoxin Adsorption in the Treatment of Septic Shock
by Jakub Śmiechowicz
J. Clin. Med. 2022, 11(3), 619; https://doi.org/10.3390/jcm11030619 - 26 Jan 2022
Cited by 12 | Viewed by 3844
Abstract
Lipopolysaccharide, the main component of the outer membrane of Gram-negative bacteria is a highly potent endotoxin responsible for organ dysfunction in sepsis. It is present in the blood stream not only in Gram-negative infections, but also in Gram-positive and fungal infections, presumably due [...] Read more.
Lipopolysaccharide, the main component of the outer membrane of Gram-negative bacteria is a highly potent endotoxin responsible for organ dysfunction in sepsis. It is present in the blood stream not only in Gram-negative infections, but also in Gram-positive and fungal infections, presumably due to sepsis-related disruption of the intestinal barrier. Various pathways, both extra- and intracellular, are involved in sensing endotoxin and non-canonical activation of caspase-mediated pyroptosis is considered to have a major role in sepsis pathophysiology. Endotoxin induces specific pathological alterations in several organs, which contributes to poor outcomes. The adverse consequences of endotoxin in the circulation support the use of anti-endotoxin therapies, yet more than 30 years of experience with endotoxin adsorption therapies have not provided clear evidence in favor of this treatment modality. The results of small studies support timely endotoxin removal guided by measuring the levels of endotoxin; unfortunately, this has not been proven in large, randomized studies. The presence of endotoxemia can be demonstrated in the majority of patients with COVID-19, yet only case reports and case series describing the effects of endotoxin removal in these patients have been published to date. The place of blood purification therapies in the treatment of septic shock has not yet been determined. Full article
(This article belongs to the Special Issue Management of Endotoxemia and Sepsis)
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