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  1. Article ; Online: Recombinant Alpha-1-Microglobulin (RMC-035) to Prevent Acute Kidney Injury in Cardiac Surgery Patients

    Raphael Weiss / Melanie Meersch / Carola Wempe / Thilo von Groote / Tobias Agervald / Alexander Zarbock

    Kidney International Reports, Vol 8, Iss 5, Pp 980-

    Phase 1b Evaluation of Safety and Pharmacokinetics

    2023  Volume 988

    Abstract: Introduction: Acute kidney injury (AKI) is a common complication in cardiac surgery patients and prevention is needed to improve clinical outcomes. Alpha-1-microglobulin (A1M) is a physiological antioxidant with strong tissue-protective and cell- ... ...

    Abstract Introduction: Acute kidney injury (AKI) is a common complication in cardiac surgery patients and prevention is needed to improve clinical outcomes. Alpha-1-microglobulin (A1M) is a physiological antioxidant with strong tissue-protective and cell-protective properties that has demonstrated renoprotective effects. RMC-035, a recombinant variant of endogenous human A1M, is being developed for the prevention of AKI in cardiac surgery patients. Methods: In this phase 1b, randomized, double-blind, and parallel group clinical study, 12 cardiac surgery patients undergoing elective, open-chest, on-pump coronary artery bypass graft and/or valve surgery with additional predisposing AKI risk factors were enrolled to receive in total 5 intravenous doses of either RMC-035 or placebo. The primary objective was to evaluate the safety and tolerability of RMC-035. The secondary objective was to evaluate its pharmacokinetic properties. Results: RMC-035 was well tolerated. The nature and frequency of adverse events (AEs) were consistent with the expected background rates in the underlying patient population with no AEs reported as related to study drug. No clinically relevant changes were observed for vital signs or laboratory parameters except for renal biomarkers. Several established AKI urine biomarkers were reduced at 4 hours after first dose administration in the treatment group, indicating a reduced perioperative tubular cell injury following RMC-035 treatment. Conclusion: Multiple intravenous doses of RMC-035 were well tolerated in patients undergoing cardiac surgery. Observed RMC-035 plasma exposures were safe and in the range of expected pharmacological activity. Furthermore, urine biomarkers suggest reduced perioperative kidney cell injury, warranting further investigation of RMC-035 as a potential renoprotective treatment.
    Keywords acute kidney injury ; alpha-1-microglobulin ; cardiac surgery ; inflammation ; perioperative medicine ; prevention ; Diseases of the genitourinary system. Urology ; RC870-923
    Subject code 610 ; 616
    Language English
    Publishing date 2023-05-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Analysis of Leukocyte Recruitment in Continuous Veno-Venous Hemofiltration with Regional Citrate vs. Systemic Heparin Anticoagulation

    Andreas Margraf / Chang Liu / Mira Küllmar / Melanie Meersch / Jan Rossaint / Alexander Zarbock

    Cells, Vol 11, Iss 1815, p

    2022  Volume 1815

    Abstract: Acute kidney injury (AKI) is a frequent complication in critically ill patients. Supportive treatment of AKI patients is based on renal-replacement therapy, including continuous veno-venous hemofiltration (CVVH). To limit clotting events on ... ...

    Abstract Acute kidney injury (AKI) is a frequent complication in critically ill patients. Supportive treatment of AKI patients is based on renal-replacement therapy, including continuous veno-venous hemofiltration (CVVH). To limit clotting events on extracorporeal surfaces, anticoagulants are administered, including systemic heparin and local citrate. The differential and comparative effects of these anticoagulants on leukocyte function in acute kidney injury patients are, so far, insufficiently understood. In this bio-add-on-study, AKI patients were randomized as part of a parallel-group trial to either systemic heparin or regional citrate anticoagulation. Patient samples were collected upon inclusion, prior to CVVH initiation at day 0, day 1, day 3 and day 5, following CVVH initiation, and one day after cessation of CVVH, then immediately analyzed. Flow cytometric assessment of surface-receptor molecules was conducted. Whole-blood-perfused human microfluidic chambers were used for the analysis of neutrophil rolling and adhesion. Acute kidney injury was associated with significant changes in the surface expression of CD182 and CD16 throughout CVVH treatment, independent of the anticoagulation regime. AKI furthermore abrogated selectin-induced slow leukocyte rolling and diminished chemokine-induced leukocyte arrest. Subgroup analyses of citrate vs. heparin treatment showed no significant differences between groups, independent of the duration of CVVH treatment. CD182 and CD16 expression remained low in both groups throughout CVVH therapy. These data confirm that AKI impairs selectin-mediated leukocyte slow rolling and chemokine-induced leukocyte arrest in vitro. Systemic heparin or local citrate anticoagulation have no differential effect on the leukocyte recruitment steps examined in this study.
    Keywords acute kidney injury ; CVVH ; anticoagulation ; citrate ; heparin ; leukocytes ; Biology (General) ; QH301-705.5
    Subject code 616
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Remote ischemic preconditioning causes transient cell cycle arrest and renal protection by a NF-κB–dependent Sema5B pathway

    Jan Rossaint / Melanie Meersch / Katharina Thomas / Sina Mersmann / Martin Lehmann / Jennifer Skupski / Tobias Tekath / Peter Rosenberger / John A. Kellum / Hermann Pavenstädt / Alexander Zarbock

    JCI Insight, Vol 7, Iss

    2022  Volume 14

    Abstract: Acute kidney injury increases morbidity and mortality, and previous studies have shown that remote ischemic preconditioning (RIPC) reduces the risk of acute kidney injury after cardiac surgery. RIPC increases urinary high mobility group box protein-1 ( ... ...

    Abstract Acute kidney injury increases morbidity and mortality, and previous studies have shown that remote ischemic preconditioning (RIPC) reduces the risk of acute kidney injury after cardiac surgery. RIPC increases urinary high mobility group box protein-1 (HMGB1) levels in patients, and this correlates with kidney protection. Here, we show that RIPC reduces renal ischemia-reperfusion injury and improves kidney function in mice. Mechanistically, RIPC increases HMGB1 levels in the plasma and urine, and HMGB1 binds to TLR4 on renal tubular epithelial cells, inducing transcriptomic modulation of renal tubular epithelial cells and providing renal protection, whereas TLR4 activation on nonrenal cells was shown to contribute to renal injury. This protection is mediated by activation of induction of AMPKα and NF-κB; this induction contributes to the upregulation of Sema5b, which triggers a transient, protective G1 cell cycle arrest. In cardiac surgery patients at high risk for postoperative acute kidney injury, increased HMGB1 and Sema5b levels after RIPC were associated with renal protection after surgery. The results may help to develop future clinical treatment options for acute kidney injury.
    Keywords Immunology ; Nephrology ; Medicine ; R
    Subject code 616 ; 610
    Language English
    Publishing date 2022-07-01T00:00:00Z
    Publisher American Society for Clinical investigation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Glutamine prevents acute kidney injury by modulating oxidative stress and apoptosis in tubular epithelial cells

    Katharina Thomas / Lisa Zondler / Nadine Ludwig / Marina Kardell / Corinna Lüneburg / Katharina Henke / Sina Mersmann / Andreas Margraf / Tilmann Spieker / Tobias Tekath / Ana Velic / Richard Holtmeier / Juliane Hermann / Vera Jankowski / Melanie Meersch / Dietmar Vestweber / Martin Westphal / Johannes Roth / Michael A. Schäfers /
    John A. Kellum / Clifford A. Lowell / Jan Rossaint / Alexander Zarbock

    JCI Insight, Vol 7, Iss

    2022  Volume 21

    Abstract: Acute kidney injury (AKI) represents a common complication in critically ill patients that is associated with increased morbidity and mortality. In a murine AKI model induced by ischemia/reperfusion injury (IRI), we show that glutamine significantly ... ...

    Abstract Acute kidney injury (AKI) represents a common complication in critically ill patients that is associated with increased morbidity and mortality. In a murine AKI model induced by ischemia/reperfusion injury (IRI), we show that glutamine significantly decreases kidney damage and improves kidney function. We demonstrate that glutamine causes transcriptomic and proteomic reprogramming in murine renal tubular epithelial cells (TECs), resulting in decreased epithelial apoptosis, decreased neutrophil recruitment, and improved mitochondrial functionality and respiration provoked by an ameliorated oxidative phosphorylation. We identify the proteins glutamine gamma glutamyltransferase 2 (Tgm2) and apoptosis signal-regulating kinase (Ask1) as the major targets of glutamine in apoptotic signaling. Furthermore, the direct modulation of the Tgm2-HSP70 signalosome and reduced Ask1 activation resulted in decreased JNK activation, leading to diminished mitochondrial intrinsic apoptosis in TECs. Glutamine administration attenuated kidney damage in vivo during AKI and TEC viability in vitro under inflammatory or hypoxic conditions.
    Keywords Immunology ; Nephrology ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher American Society for Clinical investigation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Urinary TIMP-2 and IGFBP7 as early biomarkers of acute kidney injury and renal recovery following cardiac surgery.

    Melanie Meersch / Christoph Schmidt / Hugo Van Aken / Sven Martens / Jan Rossaint / Kai Singbartl / Dennis Görlich / John A Kellum / Alexander Zarbock

    PLoS ONE, Vol 9, Iss 3, p e

    2014  Volume 93460

    Abstract: BACKGROUND: Difficulties in prediction and early identification of (acute kidney injury) AKI have hindered the ability to develop preventive and therapeutic measures for this syndrome. We tested the hypothesis that a urine test measuring insulin-like ... ...

    Abstract BACKGROUND: Difficulties in prediction and early identification of (acute kidney injury) AKI have hindered the ability to develop preventive and therapeutic measures for this syndrome. We tested the hypothesis that a urine test measuring insulin-like growth factor-binding protein 7 (IGFBP7) and tissue inhibitor of metalloproteinases-2 (TIMP-2), both inducers of G1 cell cycle arrest, a key mechanism implicated in acute kidney injury (AKI), could predict AKI in cardiac surgery patients. METHODS: We studied 50 patients at high risk for AKI undergoing cardiac surgery with cardiopulmonary bypass (CPB). Serial urine samples were analyzed for [TIMP-2]*[IGFBP7] concentrations. The primary outcome measure was AKI as defined by international consensus criteria following surgery. Furthermore, we investigated whether urine [TIMP-2]*[IGFBP7] could predict renal recovery from AKI prior to hospital discharge. RESULTS: 26 patients (52%) developed AKI. Diagnosis based on serum creatinine and/or oliguria did not occur until 1-3 days after CPB. In contrast, urine concentration of [TIMP-2]*[IGFBP7] rose from a mean of 0.49 (SE 0.24) at baseline to 1.51 (SE 0.57) 4 h after CPB in patients who developed AKI. The maximum urinary [TIMP-2]*[IGFBP7] concentration achieved in the first 24 hours following surgery (composite time point) demonstrated an area under the receiver-operating characteristic curve of 0.84. Sensitivity was 0.92, and specificity was 0.81 for a cutoff value of 0.50. The decline in urinary [TIMP-2]*[IGFBP7] values was the strongest predictor for renal recovery. CONCLUSIONS: Urinary [TIMP-2]*[IGFBP7] serves as a sensitive and specific biomarker to predict AKI early after cardiac surgery and to predict renal recovery. CLINICAL TRIAL REGISTRATION INFORMATION: www.germanctr.de/, DRKS-ID: DRKS00005062.
    Keywords Medicine ; R ; Science ; Q
    Subject code 616 ; 610
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Validation of cell-cycle arrest biomarkers for acute kidney injury after pediatric cardiac surgery.

    Melanie Meersch / Christoph Schmidt / Hugo Van Aken / Jan Rossaint / Dennis Görlich / Dirk Stege / Edward Malec / Katarzyna Januszewska / Alexander Zarbock

    PLoS ONE, Vol 9, Iss 10, p e

    2014  Volume 110865

    Abstract: The lack of early biomarkers for acute kidney injury (AKI) seriously inhibits the initiation of preventive and therapeutic measures for this syndrome in a timely manner. We tested the hypothesis that insulin-like growth factor-binding protein 7 (IGFBP7) ... ...

    Abstract The lack of early biomarkers for acute kidney injury (AKI) seriously inhibits the initiation of preventive and therapeutic measures for this syndrome in a timely manner. We tested the hypothesis that insulin-like growth factor-binding protein 7 (IGFBP7) and tissue inhibitor of metalloproteinases-2 (TIMP-2), both inducers of G1 cell cycle arrest, function as early biomarkers for AKI after congenital heart surgery with cardiopulmonary bypass (CPB).We prospectively studied 51 children undergoing cardiac surgery with CPB. Serial urine samples were analyzed for [TIMP-2]•[IGFBP7]. The primary outcome measure was AKI defined by the pRIFLE criteria within 72 hours after surgery.12 children (24%) developed AKI within 1.67 (SE 0.3) days after surgery. Children who developed AKI after cardiac surgery had a significant higher urinary [TIMP-2]•[IGFBP7] as early as 4 h after the procedure, compared to children who did not develop AKI (mean of 1.93 ((ng/ml)²/1000) (SE 0.4) vs 0.47 ((ng/ml)²/1000) (SE 0.1), respectively; p<0.05). Urinary [TIMP-2]•[IGFBP7] 4 hours following surgery demonstrated an area under the receiver-operating characteristic curve of 0.85. Sensitivity was 0.83, and specificity was 0.77 for a cutoff value of 0.70 ((ng/ml)²/1000).Urinary [TIMP-2]•[IGFBP7] represent sensitive, specific, and highly predictive early biomarkers for AKI after surgery for congenital heart disease.www.germanctr.de/, DRKS00005062.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Liberal transfusion strategy to prevent mortality and anaemia-associated, ischaemic events in elderly non-cardiac surgical patients – the study design of the LIBERAL-Trial

    Patrick Meybohm / Simone Lindau / Sascha Treskatsch / Roland Francis / Claudia Spies / Markus Velten / Maria Wittmann / Erdem Gueresir / Christian Stoppe / Ana Kowark / Mark Coburn / Sixten Selleng / Marcel Baschin / Gregor Jenichen / Melanie Meersch / Thomas Ermert / Alexander Zarbock / Peter Kranke / Markus Kredel /
    Antonia Helf / Rita Laufenberg-Feldmann / Marion Ferner / Eva Wittenmeier / Karl-Heinz Gürtler / Peter Kienbaum / Marcel Gama de Abreu / Michael Sander / Michael Bauer / Timo Seyfried / Matthias Gruenewald / Suma Choorapoikayil / Markus M. Mueller / Erhard Seifried / Oana Brosteanu / Holger Bogatsch / Dirk Hasenclever / Kai Zacharowski / LIBERAL Collaboration Group

    Trials, Vol 20, Iss 1, Pp 1-

    2019  Volume 10

    Abstract: Abstract Background Perioperative anaemia leads to impaired oxygen supply with a risk of vital organ ischaemia. In healthy and fit individuals, anaemia can be compensated by several mechanisms. Elderly patients, however, have less compensatory mechanisms ...

    Abstract Abstract Background Perioperative anaemia leads to impaired oxygen supply with a risk of vital organ ischaemia. In healthy and fit individuals, anaemia can be compensated by several mechanisms. Elderly patients, however, have less compensatory mechanisms because of multiple co-morbidities and age-related decline of functional reserves. The purpose of the study is to evaluate whether elderly surgical patients may benefit from a liberal red blood cell (RBC) transfusion strategy compared to a restrictive transfusion strategy. Methods The LIBERAL Trial is a prospective, randomized, multicentre, controlled clinical phase IV trial randomising 2470 elderly (≥ 70 years) patients undergoing intermediate- or high-risk non-cardiac surgery. Registered patients will be randomised only if Haemoglobin (Hb) reaches ≤9 g/dl during surgery or within 3 days after surgery either to the LIBERAL group (transfusion of a single RBC unit when Hb ≤ 9 g/dl with a target range for the post-transfusion Hb level of 9–10.5 g/dl) or the RESTRICTIVE group (transfusion of a single RBC unit when Hb ≤ 7.5 g/dl with a target range for the post-transfusion Hb level of 7.5–9 g/dl). The intervention per patient will be followed until hospital discharge or up to 30 days after surgery, whichever occurs first. The primary efficacy outcome is defined as a composite of all-cause mortality, acute myocardial infarction, acute ischaemic stroke, acute kidney injury (stage III), acute mesenteric ischaemia and acute peripheral vascular ischaemia within 90 days after surgery. Infections requiring iv antibiotics with re-hospitalisation are assessed as important secondary endpoint. The primary endpoint will be analysed by logistic regression adjusting for age, cancer surgery (y/n), type of surgery (intermediate- or high-risk), and incorporating centres as random effect. Discussion The LIBERAL-Trial will evaluate whether a liberal transfusion strategy reduces the occurrence of major adverse events after non-cardiac surgery in the geriatric population compared to a restrictive strategy within 90 days after surgery. Trial registration ClinicalTrials.gov (identifier: NCT03369210).
    Keywords Red blood cell transfusion ; anaemia ; surgery ; elderly patients ; Medicine (General) ; R5-920
    Subject code 610 ; 616
    Language English
    Publishing date 2019-02-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Biomarker-guided intervention to prevent acute kidney injury after major surgery (BigpAK-2 trial)

    Joachim Gerss / Javier Ripollés-Melchor / Emmanuel Futier / Melanie Meersch / Carola Wempe / Detlef Kindgen-Milles / Alexander Zarbock / Markus W Hollmann / Sigismond Lasocki / Thomas Rimmele / Tim Rahmel / Michael Adamzik / Hartmuth Nowak / Ingeborg Welters / Brian Johnston / Ane Abad-motos / Alfredo Abad-gurumeta / Marc Moritz Berger / Davide Ricci /
    Maurizio Cecconi / Gudrun Kunst / Christian Stoppe / Christian Putensen / Marlies Ostermann / Sascha Ott / Brijesh Patel / Gabriele Baldini / Antoine Lamblin / Karen Williams / Elena Mancini / Christian Arndt / Hinnerk Wulf / Marc Irqsusi / Wim Vandenberghe / John Kellum / Raphael Weiss / Jackie Donovan / Lui G Forni / Giacomo Monti / Céline Monard / Markus A Weigand / Thorsten Brenner / Ulrich Jaschinski / Carlos Lopez / Maxime Leger / Emmanuel Rineau / Philipp Simon / María Gómez-Rojo / Lars Bergmann / Alicia Waite / Savino Spadaro / Alexander Wolf / Andrew Spence / Simon Dubler / Alexander PJ Vlaar / Patrick Schober / Ben C Creagh-Brown / Nandor Marczin / Emilio Maseda / Christian Strauss / Stefano Romagnoli / Christian Nusshag / Ulrich Gobel / Ángel Candela-Toha / Jon Silversides / Nuttha Lumlertgul / Khaschayar Saadat-Gilani / Vincent Legros / Timo Brandenburger / Thomas Dimski / Laura Huthmann / Claude Pelletier / Manon Schleß / Peter Rosenberger / Helene Häberle / Jan Gerrit Haaker / Matthias Gründel / Lucia Cattin / Laura Villarino Villa / Juan Victor Lorente / Christine Martin / Jan Larmann / Wolfgang Bauer / Giovanni Borghi / Benjamin O’Brien / Thilo von Groote / Antoine Guillaume Schneider / Silvia De Rosa / Diego Parise / Alice Bernard / Paula Fernández-Valdes-Bango / Irene Romero Bhathal / A Suarez-de-la-Rica / Gianluca Villa / Raquel García-Álvarez / Antonio Siniscalchi / Richard Ellerkmann / Florian Espeter / Christian Porschen / Mahan Sadjadi / Michael Storck / Tobias Brix / Dana Meschede / Wida Amini / Carina Stenger / Julius Freytag / Jens Brands / Matthias Unterberg / Britta Marko / Fabian Dusse / Wolfgang A Wetsch / Sandra E Stoll / Hendrik Drinhaus / Bernd W Böttiger / Onnen Mörer / Lars-Olav Harnisch / Roswitha Lubjuhn / Daniel Heise / Christian Bode / Andrea Sauer / Konrad Peukert / Lennart Wild / Philippe Kruse / Jan Menzenbach / Valbona Mirakaj / Sabine Hermann / Stefanie Decker / Mona Jung-König / Tobias Hölle / Sarah Dehne / Jörg Reutershan / Thomas Prüfer / Stefan Pielmeier / Indra Wimmelmeier / Michaela Scholz / Andrea Paris / Isabel Christina Gallego Zapata / Holger Pohl / Nirmeen Fayed / Kai Dielmann / Evelyn Martin / Tilo Koch / Alexander Mück / Philipp Deetjen / Ngoc Bich Mehlmann / Peter M Spieth / Andreas Güldner / Axel Rand / Maximillian Ragaller / Martin Mirus / Rebecca Bockholt / Marc Herzog / Maren Kleine-Brüggeney / Ant Isabelle Cristiani / Marion Ohl / Monica Vieira Da Silva / Gilda Filipe de Castro Reblo / Matthias Hilty / Katharina Spanaus / Benedetta Mura / Eleonora Terreni / Francesco Magiotti / Lorenzo Turi / Cristiana Laici / Chiara Capozzi / Andrea Castelli / Massimiliano Greco / Antonio Messina / Gianluca Castellani / Romina Aceto / Vinicio Danzi / Alessandro Rigobello / Massimo De Cal / Monica Zanella / Gaetano Scaramuzzo / Riccardo La Rosa / Paolo Priani / Alberto Volta Carlo / Stefano Turi / Martina Baiardo Redaelli / Marilena Marmiere / Kittisak Weerapolchai / Shelley Lorah / Fabiola D’Amato / Aneta Bociek / Rosario Lim / Benjie Cendreda / Reynaldo Dela Cuesta / Eirini Kosifidou / Zoka Milan / Juliana Fernanda / Emma Clarey / Daveena Meeks / Nicholas J Lees / Marco Scaramuzzi / Orinta Kviatkovske / Adam Glass / Christine Turley / Charlotte Quinn / Syeda Haider / Adam Rossiter / Syed Nasser / Ned Gilbert-Kawai / Tatjana Besse-Hammer / Eric Hoste / Hannah Schaubroeck / Jan De Waele / Jenni Breel / Eline de Klerk / Harm-Jan de Grooth / Lothar Schwarte / Alexander Loer / Alicia Ruiz-Escobar / Diana Fernández-García / Nerea Gómez-Pérez / Pascual Crespo-Aliseda / Cristina Cerro-Zaballos / Cristina Fernández-Martín / Eduardo Martín-Montero / Alejandro Suarez de la Rica / Héctor Berges Gutiérrez / Maria del Pino Heredia Pérez / Maria de los Reyes Bellido Fernández / Liena Izquierdo López / Javier Valiente Lourtau / Ma Angeles Ferre Colomer / Ma Azucena Pajares Moncho / Maria Jesús Montero Hernández / Esther Pérez Sancho / Silvia Polo Matínez / Pedro Rivera Soria / Maider Puyada Jáuregui / Hugo Rivera Ramos / Marta Antelo Adrán / Ramón Adalia Bartolomé / Patricia Galán Menéndez / Laura Llinares Espin / Yuri Santiago Loaiza Aldean / Víctor MoralesAriza / Rosalía Navarro-Perez / Luis Santé-Serna / Pedro de la Calle-Elguezabal / Rubén Sánchez-Martín / Inés De Soto / Pau Vallhonrat Alcántara / Laura Perelló Cerdà / Gal·la Rouras Hurtado / Paula Rodriguez Nieto / John Narros Sicluna / Angel Molero Molinero / Juan Pablo Nocete / Elena Murcia Sánchez / Stanislas Abrard / Marie-Luce Parrouffe / Frank Bidar / Lucie Aupetitgendre / Ugo Schiff / Bertille Paquette / Gaëlle Sellier / Nathalie Borgnetta / Benjamin Brochet / Thierry Floch / Julien Coffinet / Marion Leclercq-Rouget

    BMJ Open, Vol 13, Iss

    study protocol for an international, prospective, randomised controlled multicentre trial

    2023  Volume 3

    Abstract: Introduction Previous studies demonstrated that the implementation of the Kidney Disease Improving Global Outcomes (KDIGO) guideline-based bundle, consisting of different supportive measures in patients at high risk for acute kidney injury (AKI), might ... ...

    Abstract Introduction Previous studies demonstrated that the implementation of the Kidney Disease Improving Global Outcomes (KDIGO) guideline-based bundle, consisting of different supportive measures in patients at high risk for acute kidney injury (AKI), might reduce rate and severity of AKI after surgery. However, the effects of the care bundle in broader population of patients undergoing surgery require confirmation.Methods and analysis The BigpAK-2 trial is an international, randomised, controlled, multicentre trial. The trial aims to enrol 1302 patients undergoing major surgery who are subsequently admitted to the intensive care or high dependency unit and are at high-risk for postoperative AKI as identified by urinary biomarkers (tissue inhibitor of metalloproteinases 2*insulin like growth factor binding protein 7 (TIMP-2)*IGFBP7)). Eligible patients will be randomised to receive either standard of care (control) or a KDIGO-based AKI care bundle (intervention). The primary endpoint is the incidence of moderate or severe AKI (stage 2 or 3) within 72 hours after surgery, according to the KDIGO 2012 criteria. Secondary endpoints include adherence to the KDIGO care bundle, occurrence and severity of any stage of AKI, change in biomarker values during 12 hours after initial measurement of (TIMP-2)*(IGFBP7), number of free days of mechanical ventilation and vasopressors, need for renal replacement therapy (RRT), duration of RRT, renal recovery, 30-day and 60-day mortality, intensive care unit length-of-stay and hospital length-of-stay and major adverse kidney events. An add-on study will investigate blood and urine samples from recruited patients for immunological functions and kidney damage.Ethics and dissemination The BigpAK-2 trial was approved by the Ethics Committee of the Medical Faculty of the University of Münster and subsequently by the corresponding Ethics Committee of the participating sites. A study amendment was approved subsequently. In the UK, the trial was adopted as an NIHR portfolio study. Results will ...
    Keywords Medicine ; R
    Subject code 616 ; 610
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher BMJ Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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