Cardiac force-frequency relationship and frequency-dependent acceleration of relaxation are impaired in LPS-treated rats.

Abstract:

INTRODUCTION:Frequency-dependent acceleration of relaxation (FDAR) ensures appropriate ventricular filling at high heart rates and results from accelerated sarcoplasmic/endoplasmic reticulum calcium ATPase (SERCA) activity independent of calcium removal from the cell. Because lipopolysaccharide (LPS) challenge may induce aberrations in calcium trafficking and protein phosphorylation, we tested whether LPS would abolish FDAR in rats. METHODS:Following LPS injection, changes in force-frequency relationship and FDAR were studied in cardiomyocytes, isolated hearts and in vivo by echocardiography. Calcium uptake and phosphatase activities were studied in sarcoplasmic reticulum (SR) vesicle preparations. Western blots of phospholamban and calcium/calmodulin-dependent protein kinase II, and serine/threonine phosphatase activity were studied in heart preparations. RESULTS:In cardiomyocytes and isolated heart preparations, reductions in time constant of relaxation (tau) and time to 50% relaxation at increasing rate of pacing were blunted in LPS-treated rats compared with controls. Early diastolic velocity of the mitral annulus (Ea), a relaxation parameter which correlates in vivo with tau, was reduced in LPS rats compared with control rats. LPS impaired SR calcium uptake, reduced phospholamban phosphorylation and increased serine/threonine protein phosphatase activity. In vivo inhibition of phosphatase activity partially restored FDAR, reduced phosphatase activity and prevented phospholamban dephosphorylation in LPS rat hearts. CONCLUSIONS:LPS impaired phospholamban phosphorylation, cardiac force-frequency relationship and FDAR. Disruption of frequency-dependent acceleration of LV relaxation, which normally participates in optimal heart cavity filling, may be detrimental in sepsis, which is typically associated with elevated heart rates and preload dependency.

journal_name

Crit Care

authors

Joulin O,Marechaux S,Hassoun S,Montaigne D,Lancel S,Neviere R

doi

10.1186/cc7712

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

R14

issue

1

eissn

1364-8535

issn

1466-609X

pii

cc7712

journal_volume

13

pub_type

杂志文章
  • Greening critical care.

    abstract::Climate change and environmental stewardship are phrases that have been defining the past few decades and promoting change in our societies. The sensitivities of intensive care as a specialty make the process of greening an intensive care unit a challenge, but not one that is insurmountable. This paper discusses oppor...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc9409

    authors: Chapman M,Chapman A

    更新日期:2011-01-01 00:00:00

  • Recombinant human activated protein C resets thrombin generation in patients with severe sepsis - a case control study.

    abstract:INTRODUCTION:Recombinant human activated protein C (rhAPC) is the first drug for which a reduction of mortality in severe sepsis has been demonstrated. However, the mechanism by which this reduction in mortality is achieved is still not clearly defined. The aim of the present study was to evaluate the dynamics of the a...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,多中心研究

    doi:10.1186/cc3774

    authors: de Pont AC,Bakhtiari K,Hutten BA,de Jonge E,Vroom MB,Meijers JC,Büller HR,Levi M

    更新日期:2005-10-05 00:00:00

  • Diagnostic and prognostic value of presepsin in the management of sepsis in the emergency department: a multicenter prospective study.

    abstract:INTRODUCTION:Sepsis, severe sepsis and septic shock are common conditions with high mortality. Their early diagnosis in the Emergency Department (ED) is one of the keys to improving survival. Procalcitonin (PCT) has been used as a biomarker in septic patients but has limited specificity and can be elevated in other sce...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,多中心研究

    doi:10.1186/cc12847

    authors: Ulla M,Pizzolato E,Lucchiari M,Loiacono M,Soardo F,Forno D,Morello F,Lupia E,Moiraghi C,Mengozzi G,Battista S

    更新日期:2013-07-30 00:00:00

  • Acute kidney injury subphenotypes based on creatinine trajectory identifies patients at increased risk of death.

    abstract:BACKGROUND:Acute kidney injury (AKI) is common among intensive care unit (ICU) patients. AKI is highly heterogeneous, with variable links to poor outcomes. Current approaches to classify AKI severity and identify patients at highest risk for poor outcomes focus on the maximum change in serum creatinine (SCr) values. Ho...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,多中心研究

    doi:10.1186/s13054-016-1546-4

    authors: Bhatraju PK,Mukherjee P,Robinson-Cohen C,O'Keefe GE,Frank AJ,Christie JD,Meyer NJ,Liu KD,Matthay MA,Calfee CS,Christiani DC,Himmelfarb J,Wurfel MM

    更新日期:2016-11-17 00:00:00

  • European legislation impedes critical care research and fails to protect patients' rights.

    abstract::The European Clinical Trials Directive requires an informed consent from the patient or a proxy in drug trials. Although informed consent is a valuable tool to protect patients' rights in clinical trials, this requirement largely impedes research in critical care settings, and if pursued in this context, it does not p...

    journal_title:Critical care (London, England)

    pub_type: 评论,杂志文章

    doi:10.1186/cc10113

    authors: Berg RM,Møller K,Rossel PJ

    更新日期:2011-01-01 00:00:00

  • Incidence and outcomes of acute respiratory distress syndrome in intensive care units of mainland China: a multicentre prospective longitudinal study.

    abstract:OBJECTIVES:To evaluate the incidence and mortality of acute respiratory distress syndrome (ARDS) in medical/respiratory intensive care units (MICUs/RICUs) to assess ventilation management and the use of adjunct therapy in routine clinical practice for patients fulfilling the Berlin definition of ARDS in mainland China....

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-020-03112-0

    authors: Huang X,Zhang R,Fan G,Wu D,Lu H,Wang D,Deng W,Sun T,Xing L,Liu S,Wang S,Cai Y,Tian Y,Zhang Y,Xia J,Zhan Q,CHARDSnet group.

    更新日期:2020-08-20 00:00:00

  • Value of arterial blood gas analysis in patients with acute dyspnea: an observational study.

    abstract:INTRODUCTION:The diagnostic and prognostic value of arterial blood gas analysis (ABGA) parameters in unselected patients presenting with acute dyspnea to the Emergency Department (ED) is largely unknown. METHODS:We performed a post-hoc analysis of two different prospective studies to investigate the diagnostic and pro...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc10268

    authors: Burri E,Potocki M,Drexler B,Schuetz P,Mebazaa A,Ahlfeld U,Balmelli C,Heinisch C,Noveanu M,Breidthardt T,Schaub N,Reichlin T,Mueller C

    更新日期:2011-01-01 00:00:00

  • Effect of glomerular filtration rate impairment on diagnostic performance of neutrophil gelatinase-associated lipocalin and B-type natriuretic peptide as markers of acute cardiac and renal failure in chronic kidney disease patients.

    abstract:INTRODUCTION:Cardio-renal syndromes are characterized by the impairment of cardiac and renal functions. Plasma and urinary neutrophil gelatinase-associated lipocalin (NGAL), and plasma B-type natriuretic peptide (BNP) are markers of acute kidney injury (AKI) and heart failure (HF), respectively. METHODS:GFR (99mTc-DTP...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc13752

    authors: Donadio C

    更新日期:2014-02-28 00:00:00

  • Influence of a strict glucose protocol on serum potassium and glucose concentrations and their association with mortality in intensive care patients.

    abstract:INTRODUCTION:Tight glucose control therapy (TGC) has been implemented to control hyperglycemia in ICU patients. TGC may also influence serum potassium concentrations. We therefore investigated the influence of TGC on both serum glucose and serum potassium concentrations and associated mortality. METHOD:We performed a ...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-015-0959-9

    authors: Uijtendaal EV,Zwart-van Rijkom JE,de Lange DW,Lalmohamed A,van Solinge WW,Egberts TC

    更新日期:2015-06-22 00:00:00

  • Uneven distribution of ventilation in acute respiratory distress syndrome.

    abstract:INTRODUCTION:The aim of this study was to assess the volume of gas being poorly ventilated or non-ventilated within the lungs of patients treated with mechanical ventilation and suffering from acute respiratory distress syndrome (ARDS). METHODS:A prospective, descriptive study was performed of 25 sedated and paralysed...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc3058

    authors: Rylander C,Tylén U,Rossi-Norrlund R,Herrmann P,Quintel M,Bake B

    更新日期:2005-04-01 00:00:00

  • Marked regional endothelial dysfunction in mottled skin area in patients with severe infections.

    abstract:BACKGROUND:Mottling around the knee, reflecting a reduced skin blood flow, is predictive of mortality in patients with septic shock. However, the causative pathophysiology of mottling remains unknown. We hypothesized that the cutaneous hypoperfusion observed in the mottled area is related to regional endothelial dysfun...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-017-1742-x

    authors: Bourcier S,Joffre J,Dubée V,Preda G,Baudel JL,Bigé N,Leblanc G,Levy BI,Guidet B,Maury E,Ait-Oufella H

    更新日期:2017-06-23 00:00:00

  • Impact of antibacterials on subsequent resistance and clinical outcomes in adult patients with viral pneumonia: an opportunity for stewardship.

    abstract:INTRODUCTION:Respiratory viruses are increasingly recognized as significant etiologies of pneumonia among hospitalized patients. Advanced technologies using multiplex molecular assays and polymerase-chain reaction increase the ability to identify viral pathogens and may ultimately impact antibacterial use. METHOD:This...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-015-1120-5

    authors: Crotty MP,Meyers S,Hampton N,Bledsoe S,Ritchie DJ,Buller RS,Storch GA,Kollef MH,Micek ST

    更新日期:2015-11-18 00:00:00

  • Beyond volutrauma in ARDS: the critical role of lung tissue deformation.

    abstract::Ventilator-induced lung injury (VILI) consists of tissue damage and a biological response resulting from the application of inappropriate mechanical forces to the lung parenchyma. The current paradigm attributes VILI to overstretching due to very high-volume ventilation (volutrauma) and cyclic changes in aeration due ...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,评审

    doi:10.1186/cc10052

    authors: Albaiceta GM,Blanch L

    更新日期:2011-04-07 00:00:00

  • Dynamic hyperinflation and intrinsic positive end-expiratory pressure in ARDS patients.

    abstract:BACKGROUND:In ARDS patients, changes in respiratory mechanical properties and ventilatory settings can cause incomplete lung deflation at end-expiration. Both can promote dynamic hyperinflation and intrinsic positive end-expiratory pressure (PEEP). The aim of this study was to investigate, in a large population of ARDS...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-019-2611-6

    authors: Coppola S,Caccioppola A,Froio S,Ferrari E,Gotti M,Formenti P,Chiumello D

    更新日期:2019-11-27 00:00:00

  • Clinical use of [TIMP-2]•[IGFBP7] biomarker testing to assess risk of acute kidney injury in critical care: guidance from an expert panel.

    abstract:BACKGROUND:The first FDA-approved test to assess risk for acute kidney injury (AKI), [TIMP-2]•[IGFBP7], is clinically available in many parts of the world, including the USA and Europe. We sought to understand how the test is currently being used clinically. METHODS:We invited a group of experts knowledgeable on the u...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-019-2504-8

    authors: Guzzi LM,Bergler T,Binnall B,Engelman DT,Forni L,Germain MJ,Gluck E,Göcze I,Joannidis M,Koyner JL,Reddy VS,Rimmelé T,Ronco C,Textoris J,Zarbock A,Kellum JA

    更新日期:2019-06-20 00:00:00

  • Potential confounders for the effect of high-flow nasal cannula oxygen therapy.

    abstract:: ...

    journal_title:Critical care (London, England)

    pub_type: 评论,信件

    doi:10.1186/s13054-019-2310-3

    authors: Yamaga S,Ohshimo S,Shime N

    更新日期:2019-01-17 00:00:00

  • Impact of a computerized decision support tool deployed in two intensive care units on acute kidney injury progression and guideline compliance: a prospective observational study.

    abstract:BACKGROUND:Acute kidney injury (AKI) affects a large proportion of the critically ill and is associated with worse patient outcomes. Early identification of AKI can lead to earlier initiation of supportive therapy and better management. In this study, we evaluate the impact of computerized AKI decision support tool int...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-020-03343-1

    authors: Bourdeaux C,Ghosh E,Atallah L,Palanisamy K,Patel P,Thomas M,Gould T,Warburton J,Rivers J,Hadfield J

    更新日期:2020-11-23 00:00:00

  • Noninvasive ventilation and the upper airway: should we pay more attention?

    abstract::In an effort to reduce the complications related to invasive ventilation, the use of noninvasive ventilation (NIV) has increased over the last years in patients with acute respiratory failure. However, failure rates for NIV remain high in specific patient categories. Several studies have identified factors that contri...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,评审

    doi:10.1186/cc13141

    authors: Oppersma E,Doorduin J,van der Heijden EH,van der Hoeven JG,Heunks LM

    更新日期:2013-12-05 00:00:00

  • Targeting the programmed cell death 1: programmed cell death ligand 1 pathway reverses T cell exhaustion in patients with sepsis.

    abstract:INTRODUCTION:A major pathophysiologic mechanism in sepsis is impaired host immunity which results in failure to eradicate invading pathogens and increased susceptibility to secondary infections. Although many immunosuppressive mechanisms exist, increased expression of the inhibitory receptor programmed cell death 1 (PD...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc13176

    authors: Chang K,Svabek C,Vazquez-Guillamet C,Sato B,Rasche D,Wilson S,Robbins P,Ulbrandt N,Suzich J,Green J,Patera AC,Blair W,Krishnan S,Hotchkiss R

    更新日期:2014-01-04 00:00:00

  • Tight glycemic control: what do we really know, and what should we expect?

    abstract::Tight glycemic control has engendered large numbers of investigations, with conflicting results. The world has largely embraced intensive insulin as a practice, but applies this therapy with great variability in the manner of glucose control and measurement. The present commentary reviews what we actually know with ce...

    journal_title:Critical care (London, England)

    pub_type: 评论,杂志文章,评审

    doi:10.1186/cc9236

    authors: Nasraway SA Jr,Rattan R

    更新日期:2010-01-01 00:00:00

  • Bench-to-bedside review: High-mobility group box 1 and critical illness.

    abstract::High-mobility group box 1 (HMGB1) is a DNA-binding protein that also exhibits proinflammatory cytokine-like activity. HMGB1 is passively released by necrotic cells and also is actively secreted by immunostimulated macrophages, dendritic cells, and enterocytes. Although circulating HMGB1 levels are increased relative t...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc6088

    authors: Fink MP

    更新日期:2007-01-01 00:00:00

  • Moving beyond tight glucose control to safe effective glucose control.

    abstract::The impressive benefits related to the use of tight glucose control by intensive insulin therapy have not been reproduced until now in multicenter large-scale prospective randomized trials. Although the reasons for these failures are not entirely clear, we suggest the use of a stepwise approach - Safe, Effective Gluco...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc6889

    authors: Krinsley JS,Preiser JC

    更新日期:2008-01-01 00:00:00

  • Bench-to-bedside review: Beta-adrenergic modulation in sepsis.

    abstract::Sepsis, despite recent therapeutic progress, still carries unacceptably high mortality rates. The adrenergic system, a key modulator of organ function and cardiovascular homeostasis, could be an interesting new therapeutic target for septic shock. Beta-adrenergic regulation of the immune function in sepsis is complex ...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,评审

    doi:10.1186/cc8026

    authors: de Montmollin E,Aboab J,Mansart A,Annane D

    更新日期:2009-01-01 00:00:00

  • Measuring the anticoagulant effect of low molecular weight heparins in the critically ill.

    abstract::Antithrombotic prophylaxis in critically ill patients frequently fails. Venous thromboembolism is associated with adverse clinical outcomes, including a prolonged intensive care unit stay and death. A potential mechanism by which critically ill patients may be predisposed to antithrombotic failure is the inability to ...

    journal_title:Critical care (London, England)

    pub_type: 评论,杂志文章,评审

    doi:10.1186/cc4978

    authors: Crowther M,Lim W

    更新日期:2006-01-01 00:00:00

  • Plasma colloid osmotic pressure in healthy infants.

    abstract:BACKGROUND:The plasma colloid osmotic pressure (COP) plays a major role in transcapillary fluid balance. There is no information on plasma COP of healthy infants beyond the first post-natal week. The normal COP in healthy adult subjects (25 mmHg) is currently also applied as a reference value for healthy infants. This ...

    journal_title:Critical care (London, England)

    pub_type: 临床试验,杂志文章

    doi:10.1186/cc1043

    authors: Sussmane JB,de Soto M,Torbati D

    更新日期:2001-10-01 00:00:00

  • N-terminal pro-brain natriuretic peptide as an early prognostic factor in cancer patients developing septic shock.

    abstract:INTRODUCTION:The overall prognosis of critically ill patients with cancer has improved during the past decade. The aim of this study was to identify early prognostic factors of intensive care unit (ICU) mortality in patients with cancer. METHODS:We designed a prospective, consecutive, observational study over a one-ye...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/cc5721

    authors: Mokart D,Sannini A,Brun JP,Faucher M,Blaise D,Blache JL,Faucher C

    更新日期:2007-01-01 00:00:00

  • Prehospital identification of trauma patients with early acute coagulopathy and massive bleeding: results of a prospective non-interventional clinical trial evaluating the Trauma Induced Coagulopathy Clinical Score (TICCS).

    abstract:INTRODUCTION:Identifying patients who need damage control resuscitation (DCR) early after trauma is pivotal for adequate management of their critical condition. Several trauma-scoring systems have been developed to identify such patients, but most of them are not simple enough to be used in prehospital settings in the ...

    journal_title:Critical care (London, England)

    pub_type: 临床试验,杂志文章

    doi:10.1186/s13054-014-0648-0

    authors: Tonglet ML,Minon JM,Seidel L,Poplavsky JL,Vergnion M

    更新日期:2014-11-26 00:00:00

  • Drotrecogin alfa (activated): does current evidence support treatment for any patients with severe sepsis?

    abstract::Two international multicentre randomised controlled trials of drotrecogin alfa (activated) (DrotAA), the Recombinant Human Activated Protein C Worldwide Evaluation of Severe Sepsis (PROWESS) and Administration of Drotrecogin Alfa (Activated) in Early Stage Severe Sepsis (ADDRESS) trials, have produced inconsistent res...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章,评审

    doi:10.1186/cc4947

    authors: Friedrich JO,Adhikari NK,Meade MO

    更新日期:2006-01-01 00:00:00

  • Effects of a swallowing and oral care intervention for patients following endotracheal extubation: a pre- and post-intervention study.

    abstract:BACKGROUND:For patients who survive a critical illness and have their oral endotracheal tube removed, dysphagia is highly prevalent, and without intervention, it may persist far beyond hospital discharge. This pre- and post-intervention study with historical controls tested the effects of a swallowing and oral care (SO...

    journal_title:Critical care (London, England)

    pub_type: 杂志文章

    doi:10.1186/s13054-019-2623-2

    authors: Wu CP,Xu YJ,Wang TG,Ku SC,Chan DC,Lee JJ,Wei YC,Hsiao TY,Chen CC

    更新日期:2019-11-09 00:00:00

  • Endotoxemia-induced inflammation and the effect on the human brain.

    abstract:INTRODUCTION:Effects of systemic inflammation on cerebral function are not clear, as both inflammation-induced encephalopathy as well as stress-hormone mediated alertness have been described. METHODS:Experimental endotoxemia (2 ng/kg Escherichia coli lipopolysaccharide [LPS]) was induced in 15 subjects, whereas 10 ser...

    journal_title:Critical care (London, England)

    pub_type: 临床试验,杂志文章

    doi:10.1186/cc9001

    authors: van den Boogaard M,Ramakers BP,van Alfen N,van der Werf SP,Fick WF,Hoedemaekers CW,Verbeek MM,Schoonhoven L,van der Hoeven JG,Pickkers P

    更新日期:2010-01-01 00:00:00