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Teismann T, Forkmann T, Glaesmer H, Alpers GW, Brakemeier EL, Brockmeyer T, Christiansen H, Fehm L, Glombiewski J, Heider J, Hermann A, Hoyer J, Kaiser T, Klucken T, Lincoln TM, Lutz W, Margraf J, Pedersen A, Renneberg B, Rubel J, Rudolph A, Schöttke H, Schwartz B, Stark R, Velten J, Willutzki U, Wilz G, In-Albon T. Prevalence of suicidal ideation in German psychotherapy outpatients: A large multicenter assessment. J Affect Disord 2024; 351:971-976. [PMID: 38346649 DOI: 10.1016/j.jad.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/30/2024] [Accepted: 02/07/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Suicidal ideation is a major concern in clinical practice. Yet, little is known about prevalence rates of suicidal ideation in patients undergoing outpatient psychotherapeutic treatment. Therefore, the aim of the current study is to assess the prevalence of suicidal ideation in a large sample of psychotherapy outpatients in Germany. The data analyzed in this study is taken from the KODAP-project on the coordination of data collection and analysis at German university-based research and training outpatient clinics for psychotherapy. METHODS A total of N = 10,357 adult outpatients (64.4 % female; age: M(SD) = 35.94 (13.54), range: 18-92 years of age) starting cognitive-behavioral therapy at one of 27 outpatient clinics in Germany were included in the current study. Prevalence of suicidal ideation was assessed with the Suicide Item (Item 9) of the Beck-Depression Inventory II. RESULTS Suicidal ideation was reported by 36.7 % (n = 3795) of the participants. Borderline Personality Disorder, Posttraumatic Stress Disorder, and recurrent Major Depression were the diagnoses most strongly associated with the presence and severity of suicidal ideation. LIMITATION Suicide ideation was assessed only with the respective item of the Beck Depression Inventory II. CONCLUSION Suicidal ideation is very common among adult patients who start psychotherapy in Germany. A well-founded knowledge of risk assessment in suicidal patients and suicide-specific treatment options is therefore highly relevant.
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Affiliation(s)
- T Teismann
- Mental Health Research and Treatment Center, Department of Psychology, Ruhr-Universität Bochum, Germany.
| | - T Forkmann
- Clinical Psychology and Psychotherapy, Universität Duisburg-Essen, Germany.
| | - H Glaesmer
- Medical Psychology and Medical Sociology, Universität Leipzig, Germany.
| | - G W Alpers
- Otto Selz Institute & Department of Psychology, School of Social Sciences, University of Mannheim, Germany.
| | - E L Brakemeier
- Clinical Psychology and Psychotherapy, Universität Greifswald, Germany.
| | - T Brockmeyer
- Clinical Psychology and Psychotherapy, University of Goettingen, Germany.
| | - H Christiansen
- Clinical Child and Adolescent Psychology, Philipps-Universität Marburg, Germany.
| | - L Fehm
- Institute for Psychology, Humboldt-Universität zu Berlin, Germany.
| | - J Glombiewski
- Clinical Psychology and Psychotherapy of Adulthood, University of Kaiserslautern-Landau, Germany.
| | - J Heider
- Clinical Psychology and Psychotherapy of Adulthood, University of Kaiserslautern-Landau, Germany.
| | - A Hermann
- Psychotherapy and Systems Neuroscience, Justus Liebig University Giessen, Germany.
| | - J Hoyer
- Faculty of Psychology, Technische Universität Dresden, Germany.
| | - T Kaiser
- Methods and Evaluation/Quality Assurance, Freie Universität Berlin, Germany.
| | - T Klucken
- Clinical Psychology and Psychotherapy, Universität Siegen, Germany.
| | - T M Lincoln
- Clinical Psychology and Psychotherapy, Universität Hamburg, Germany.
| | - W Lutz
- Clinical Psychology and Psychotherapy, Universität Trier, Germany.
| | - J Margraf
- Mental Health Research and Treatment Center, Department of Psychology, Ruhr-Universität Bochum, Germany
| | - A Pedersen
- Clinical Psychology and Psychotherapy, Kiel University, Germany.
| | - B Renneberg
- Clinical Psychology and Psychotherapy, Freie Universität Berlin, Germany.
| | - J Rubel
- Clinical Psychology and Psychotherapy of Adulthood, Universität Osnabrück, Germany.
| | - A Rudolph
- Clinical Psychology and Psychotherapy, Universität Leipzig, Germany.
| | - H Schöttke
- Clinical Psychology and Psychotherapy, Universität Osnabrück, Germany.
| | - B Schwartz
- Clinical Psychology and Psychotherapy, Universität Trier, Germany.
| | - R Stark
- Psychotherapy and Systems Neuroscience, Justus Liebig University Giessen, Germany.
| | - J Velten
- Mental Health Research and Treatment Center, Department of Psychology, Ruhr-Universität Bochum, Germany
| | - U Willutzki
- Clinical Psychology and Psychotherapy, Faculty of Health, University Witten/Herdecke, Germany.
| | - G Wilz
- Counseling and Clinical Intervention, Department of Psychology, Friedrich-Schiller Universität Jena.
| | - T In-Albon
- Clinical Child and Adolescent Psychology and Psychotherapy, University of Kaiserslautern-, Landau, Germany.
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Steinbach D, Ahrens PC, Schmidt M, Federbusch M, Heuft L, Lübbert C, Nauck M, Gründling M, Isermann B, Gibb S, Kaiser T. Applying Machine Learning to Blood Count Data Predicts Sepsis with ICU Admission. Clin Chem 2024; 70:506-515. [PMID: 38431275 DOI: 10.1093/clinchem/hvae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 11/16/2023] [Indexed: 03/05/2024]
Abstract
BACKGROUND Timely diagnosis is crucial for sepsis treatment. Current machine learning (ML) models suffer from high complexity and limited applicability. We therefore created an ML model using only complete blood count (CBC) diagnostics. METHODS We collected non-intensive care unit (non-ICU) data from a German tertiary care centre (January 2014 to December 2021). Using patient age, sex, and CBC parameters (haemoglobin, platelets, mean corpuscular volume, white and red blood cells), we trained a boosted random forest, which predicts sepsis with ICU admission. Two external validations were conducted using data from another German tertiary care centre and the Medical Information Mart for Intensive Care IV database (MIMIC-IV). Using the subset of laboratory orders also including procalcitonin (PCT), an analogous model was trained with PCT as an additional feature. RESULTS After exclusion, 1 381 358 laboratory requests (2016 from sepsis cases) were available. The CBC model shows an area under the receiver operating characteristic (AUROC) of 0.872 (95% CI, 0.857-0.887). External validations show AUROCs of 0.805 (95% CI, 0.787-0.824) for University Medicine Greifswald and 0.845 (95% CI, 0.837-0.852) for MIMIC-IV. The model including PCT revealed a significantly higher AUROC (0.857; 95% CI, 0.836-0.877) than PCT alone (0.790; 95% CI, 0.759-0.821; P < 0.001). CONCLUSIONS Our results demonstrate that routine CBC results could significantly improve diagnosis of sepsis when combined with ML. The CBC model can facilitate early sepsis prediction in non-ICU patients with high robustness in external validations. Its implementation in clinical decision support systems has strong potential to provide an essential time advantage and increase patient safety.
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Affiliation(s)
- Daniel Steinbach
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
| | - Paul C Ahrens
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
| | - Maria Schmidt
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
| | - Martin Federbusch
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
| | - Lara Heuft
- Institute of Human Genetics, Leipzig University Hospital, Leipzig, Germany
| | - Christoph Lübbert
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Interdisciplinary Center for Infectious Diseases, Leipzig University Hospital, Leipzig, Germany
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Gründling
- Anesthesiology and Intensive Care Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Berend Isermann
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
| | - Sebastian Gibb
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
- Anesthesiology and Intensive Care Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Thorsten Kaiser
- University Institute for Laboratory Medicine, OWL University Hospital of Bielefeld University, Detmold, Germany
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Schmidt M, Steinbach D, Federbusch M, Tönjes A, Isermann B, Kaiser T, Eckelt F. Evidence-based cutoffs for total and adjusted calcium: a major factor in detecting severe hypo- and hypercalcemia. Clin Chem Lab Med 2023; 0:cclm-2023-0805. [PMID: 38095218 DOI: 10.1515/cclm-2023-0805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
OBJECTIVES Severe hypo- and hypercalcemia are common and urgent treatment is recommended. Free calcium (fCa) is the gold standard but needs blood gas tests with challenging preanalytics. Total calcium (tCa) and calculated adjusted calcium (aCa) are readily available, but their interpretation is hampered by identical tCa and aCa cutoffs, laborious local aCa calculation and difficult comparability of calcium biomarkers. METHODS Laboratory results from University Medicine Leipzig were evaluated over a five-year period (236,274 patients). A local aCa equation was derived by linear least squares regression, the agreement between fCa, tCa and aCa assessed with Cohen's κ and decision thresholds derived by this indirect method. RESULTS The local aCa equation was created from data of 9,756 patients, each with one paired measurement of tCa, fCa and albumin. Derived aCa cutoffs (1.95/3.15 mmol/L) differ markedly from derived tCa cutoffs (1.6/2.9 mmol/L) and severe hypo- and hypercalcemia can be more accurately assessed by aCa (κ=0.489, 0.812) than by tCa (κ=0.445, 0.744). Comparing our approach to standard care (tCa, literature cutoff), a total 3,250 of 3,680 (88.3 %) misclassified measurements were correctly classified when using aCa with evidence-based cutoffs. CONCLUSIONS Optimized cutoffs for aCa and tCa hold great potential for improved patient care. Locally derived aCa equations differ mostly in the chosen mean normal calcium and provide minimal overall improvement, but entail a close examination of the used cutoffs before application.
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Affiliation(s)
- Maria Schmidt
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Leipzig Medical Center, Leipzig, Germany
| | - Daniel Steinbach
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Leipzig Medical Center, Leipzig, Germany
| | - Martin Federbusch
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Leipzig Medical Center, Leipzig, Germany
| | - Anke Tönjes
- Department of Endocrinology, Nephrology, Rheumatology, University Leipzig Medical Center, Leipzig, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Leipzig Medical Center, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Leipzig Medical Center, Leipzig, Germany
- Institute for Laboratory Medicine, Microbiology and Pathobiochemistry, University Hospital Ostwestfalen-Lippe (UK-OWL), Campus Klinikum Lippe, Lippe, Germany
| | - Felix Eckelt
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Leipzig Medical Center, Leipzig, Germany
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
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Gessner R, Gärtner C, Schmidt M, Eckelt F, Wirkner K, Löffler M, Uhe T, Isermann B, Laufs U, Kaiser T, Wachter R. Higher troponin T serum concentrations in hospital patients without diagnosed cardiac diseases compared to a population-based cohort. Clin Chem Lab Med 2023; 61:2046-2052. [PMID: 37272166 DOI: 10.1515/cclm-2023-0040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 05/19/2023] [Indexed: 06/06/2023]
Abstract
OBJECTIVES Upper reference limits of high-sensitivity cardiac troponin T (hs-cTnT) are derived from healthy, population-based cohorts, and are frequently exceeded in hospitalized patients. In this study we aim to systematically examine the differences between in-hospital patients with no diagnosed cardiac diseases and a population-based cohort. METHODS Retrospective analyses were performed in two independent cohorts. We included 5,652 participants of the prospective population-based LIFE cohort as well as 9,300 patients having been treated at our hospital between 2014 and 2021. In both cohorts, subjects with diagnosed or suspected cardiac diseases were excluded. We used Spearman's rank correlation for correlation analyses of hs-cTnT serum concentrations and age. Sex- and age-adjusted 99th percentiles for hs-cTnT in subjects with preserved renal function were obtained in both cohorts. RESULTS In both cohorts, hs-cTnT serum concentrations positively correlated with age. Male sex was associated with higher hs-cTnT serum concentrations. Persons treated in hospital showed significantly higher hs-cTnT concentrations in females and males aged above 50. While in the population-based cohort only 99th percentile hs-cTnT results of females aged above 70 and males aged above 60 years exceeded the assay's upper reference limit, the 99th percentiles of in-hospital females over 40 years and males of all age groups exceeded this threshold. CONCLUSIONS Besides age and sex, hospitalization per se is correlated with higher serum concentrations of hs-cTnT in most age groups. Our results indicate, that unconditionally applying current hs-cTnT cut-offs to inpatients might overestimate myocardial infarction and potentially lead to overdiagnosis.
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Affiliation(s)
- Romy Gessner
- Department of Cardiology, University of Leipzig Medical Center, Leipzig, Germany
| | - Christiane Gärtner
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, Leipzig, Germany
- Institute for Laboratory Medicine, Microbiology and Pathobiochemistry, University Hospital Ostwestfalen-Lippe (UK-OWL), Lippe, Germany
| | - Maria Schmidt
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, Leipzig, Germany
| | - Felix Eckelt
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, Leipzig, Germany
| | - Kerstin Wirkner
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
- Institute for Medical Informatics, Statistics, and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
| | - Markus Löffler
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
- Institute for Medical Informatics, Statistics, and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
| | - Tobias Uhe
- Department of Cardiology, University of Leipzig Medical Center, Leipzig, Germany
| | - Berend Isermann
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, Leipzig, Germany
| | - Ulrich Laufs
- Department of Cardiology, University of Leipzig Medical Center, Leipzig, Germany
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, Leipzig, Germany
- Institute for Laboratory Medicine, Microbiology and Pathobiochemistry, University Hospital Ostwestfalen-Lippe (UK-OWL), Lippe, Germany
| | - Rolf Wachter
- Department of Cardiology, University of Leipzig Medical Center, Leipzig, Germany
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Heuft L, Voigt J, Selig L, Schmidt M, Eckelt F, Steinbach D, Federbusch M, Stumvoll M, Schlögl H, Isermann B, Kaiser T. Development, Design and Utilization of a CDSS for Refeeding Syndrome in Real Life Inpatient Care-A Feasibility Study. Nutrients 2023; 15:3712. [PMID: 37686744 PMCID: PMC10490138 DOI: 10.3390/nu15173712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND The refeeding syndrome (RFS) is an oftentimes-unrecognized complication of reintroducing nutrition in malnourished patients that can lead to fatal cardiovascular failure. We hypothesized that a clinical decision support system (CDSS) can improve RFS recognition and management. METHODS We developed an algorithm from current diagnostic criteria for RFS detection, tested the algorithm on a retrospective dataset and combined the final algorithm with therapy and referral recommendations in a knowledge-based CDSS. The CDSS integration into clinical practice was prospectively investigated for six months. RESULTS The utilization of the RFS-CDSS lead to RFS diagnosis in 13 out of 21 detected cases (62%). It improved patient-related care and documentation, e.g., RFS-specific coding (E87.7), increased from once coded in 30 month in the retrospective cohort to four times in six months in the prospective cohort and doubled the rate of nutrition referrals in true positive patients (retrospective referrals in true positive patients 33% vs. prospective referrals in true positive patients 71%). CONCLUSION CDSS-facilitated RFS diagnosis is possible and improves RFS recognition. This effect and its impact on patient-related outcomes needs to be further investigated in a large randomized-controlled trial.
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Affiliation(s)
- Lara Heuft
- Institute of Human Genetics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Jenny Voigt
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Lars Selig
- Department of Endocrinology, Nephrology and Rheumatology, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Maria Schmidt
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Felix Eckelt
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Daniel Steinbach
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Martin Federbusch
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Michael Stumvoll
- Department of Endocrinology, Nephrology and Rheumatology, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Haiko Schlögl
- Department of Endocrinology, Nephrology and Rheumatology, University Medical Center Leipzig, 04103 Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Berend Isermann
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, 04103 Leipzig, Germany
- Institute for Laboratory Medicine, Microbiology and Pathobiochemistry, Medical School and University Medical Center OWL, Hospital Lippe, Bielefeld University, 32756 Bielefeld, Germany
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Walter Costa MB, Gärtner C, Schmidt M, Berg T, Seehofer D, Kaiser T. Revising the MELD Score to Address Sex-Bias in Liver Transplant Prioritization for a German Cohort. J Pers Med 2023; 13:963. [PMID: 37373952 DOI: 10.3390/jpm13060963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
(1) Background: Prioritization of patients for liver transplantation in Germany relies on the MELD (model for end-stage liver disease) scoring system that does not consider the patient's sex. Many studies have shown that women are disadvantaged by the MELD score. Using a large patient cohort from a German liver transplant centre, we investigated options to reduce gender inequality in the patient prioritization for liver transplantation. (2) Methods: We calculated female-as-male MELD scores in our cohort by substituting the serum creatinine of a female patient with that of their male equivalent to test for the fairness of the scores. We investigated the effects of the female-as-male scores compared to the original MELD score of 1759 patients listed for liver transplantation. (3) Results: Serum creatinine sex correction (female-as-male) for MELD scores added up to 5.4 points in females, while the median changed by +1.6 points for females. We identified 72 females with an original MELD score < 20, for whom the adjusted female-as-male MELD score would be >20, thus giving them a better chance to receive a liver transplant. (4) Conclusions: Mathematical conversion of female to male creatinine concentrations identified disadvantages in liver transplantation prioritization for females and ascertained MELD 3.0 as having high potential to compensate for these inequalities.
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Affiliation(s)
- Maria Beatriz Walter Costa
- Clinical Chemistry and Molecular Diagnostics, Institute for Laboratory Medicine, Leipzig University Medical Center, Paul-List-Straße 13/15, D-04103 Leipzig, Germany
- Viral Ecology and Omics, Institute of Biodiversity, Faculty of Biological Sciences, Friedrich Schiller University Jena, Rosalind-Franklin Straße 1, D-07745 Jena, Germany
| | - Christiane Gärtner
- Viral Ecology and Omics, Institute of Biodiversity, Faculty of Biological Sciences, Friedrich Schiller University Jena, Rosalind-Franklin Straße 1, D-07745 Jena, Germany
- Academic Department of Laboratory Medicine, Microbiology and Pathobiochemistry, Medical School and University Medical Center East Westphalia-Lippe, Hospital Lippe, Bielefeld University, Röntgenstraße 18, D-32756 Detmold, Germany
| | - Maria Schmidt
- Clinical Chemistry and Molecular Diagnostics, Institute for Laboratory Medicine, Leipzig University Medical Center, Paul-List-Straße 13/15, D-04103 Leipzig, Germany
| | - Thomas Berg
- Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Liebigstraße 20, D-04103 Leipzig, Germany
| | - Daniel Seehofer
- Division of Hepatobiliary Surgery and Visceral Transplant Surgery, Department of Visceral, Transplant, Thoracic and Vascular Surgery, Leipzig University Medical Center, Liebigstraße 20, D-04103 Leipzig, Germany
| | - Thorsten Kaiser
- Clinical Chemistry and Molecular Diagnostics, Institute for Laboratory Medicine, Leipzig University Medical Center, Paul-List-Straße 13/15, D-04103 Leipzig, Germany
- Academic Department of Laboratory Medicine, Microbiology and Pathobiochemistry, Medical School and University Medical Center East Westphalia-Lippe, Hospital Lippe, Bielefeld University, Röntgenstraße 18, D-32756 Detmold, Germany
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7
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Gärtner C, Fallmann J, Stadler PF, Kaiser T, Berkemer SJ. Toward a Systematic Assessment of Sex Differences in Cystic Fibrosis. J Pers Med 2023; 13:924. [PMID: 37373913 DOI: 10.3390/jpm13060924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/26/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
(1) Background: Cystic fibrosis (CF) is a disease with well-documented clinical differences between female and male patients. However, this gender gap is very poorly studied at the molecular level. (2) Methods: Expression differences in whole blood transcriptomics between female and male CF patients are analyzed in order to determine the pathways related to sex-biased genes and assess their potential influence on sex-specific effects in CF patients. (3) Results: We identify sex-biased genes in female and male CF patients and provide explanations for some sex-specific differences at the molecular level. (4) Conclusion: Genes in key pathways associated with CF are differentially expressed between sexes, and thus may account for the gender gap in morbidity and mortality in CF.
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Affiliation(s)
- Christiane Gärtner
- Neuromorphic Information Processing, Institute of Computer Science, Leipzig University, Augustusplatz 10, D-04109 Leipzig, Germany
- Bioinformatics Group, Institute of Computer Science, Interdisciplinary Center of Bioinformatics, Leipzig University, Härtelstraße 16-18, D-04107 Leipzig, Germany
- Academic Department of Laboratory Medicine, Microbiology and Pathobiochemistry, Medical School and University Medical Center East Westphalia-Lippe, Hospital Lippe, Bielefeld University, Röntgenstraße 18, D-32756 Detmold, Germany
| | - Jörg Fallmann
- Bioinformatics Group, Institute of Computer Science, Interdisciplinary Center of Bioinformatics, Leipzig University, Härtelstraße 16-18, D-04107 Leipzig, Germany
| | - Peter F Stadler
- Bioinformatics Group, Institute of Computer Science, Interdisciplinary Center of Bioinformatics, Leipzig University, Härtelstraße 16-18, D-04107 Leipzig, Germany
| | - Thorsten Kaiser
- Academic Department of Laboratory Medicine, Microbiology and Pathobiochemistry, Medical School and University Medical Center East Westphalia-Lippe, Hospital Lippe, Bielefeld University, Röntgenstraße 18, D-32756 Detmold, Germany
| | - Sarah J Berkemer
- LIX CNRS UMR 7161, Ecole Polytechnique, Institut Polytechnique de Paris, 91120 Palaiseau, France
- Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1-I7E-318 Ookayama, Tokyo 152-8550, Japan
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8
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Sicker T, Federbusch M, Eckelt F, Isermann B, Fenske W, Fries C, Schmidt M, Kaiser T. Challenge in hyponatremic patients - the potential of a laboratory-based decision support system for hyponatremia to improve patient's safety. Clin Chem Lab Med 2023; 61:1025-1034. [PMID: 36593221 DOI: 10.1515/cclm-2022-0883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 12/12/2022] [Indexed: 01/04/2023]
Abstract
OBJECTIVES Hyponatremia is the most frequent electrolyte disorder in hospitalized patients with increased mortality and morbidity. In this study, we evaluated the follow-up diagnostic, the risk of inadequate fast correction and the outcome of patients with profound hyponatremia (pHN), defined as a blood sodium concentration below 120 mmol/L. The aim was to identify a promising approach for a laboratory-based clinical decision support system (CDSS). METHODS This retrospective study included 378,980 blood sodium measurements of 83,315 cases at a German tertiary care hospital. Hospitalized cases with pHN (n=211) were categorized into two groups by the time needed for a follow-up measurement to be performed (time to control, TTC) as either <12 h (group 1: "TTC≤12 h", n=118 cases) or >12 h (group 2: "TTC>12 h", n=93 cases). Length of hospital stay, sodium level at discharge, ward transfers, correction of hyponatremia, and risk of osmotic demyelination syndrome (ODS) due to inadequate fast correction were evaluated with regard to the TTC of sodium blood concentration. RESULTS pHN was detected in 1,050 measurements (0.3%) in 211 cases. Cases, in which follow-up diagnostics took longer (TTC>12 h), achieved a significantly lower sodium correction during their hospitalization (11.2 vs. 16.7 mmol/L, p<0.001), were discharged more frequently in hyponatremic states (<135 mmol/L; 58 (62.4%) vs. 43 (36.4%), p<0.001) and at lower sodium blood levels (131.2 vs. 135.0 mmol/L, p<0.001). Furthermore, for these patients there was a trend toward an increased length of hospital stay (13.1 vs. 8.5 days, p=0.089), as well as an increased risk of inadequate fast correction (p<0.001). CONCLUSIONS Our study shows that less frequent follow-up sodium measurements in pHN are associated with worse outcomes. Patients with a prolonged TTC are at risk of insufficient correction of hyponatremia, reduced sodium values at discharge, and possible overcorrection. Our results suggest that a CDSS that alerts treating physicians when a control time of >12 h is exceeded could improve patient care in the long term. We are initiating a prospective study to investigate the benefits of our self-invented CDSS (www.ampel.care) for patients with pHN.
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Affiliation(s)
- Tom Sicker
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Martin Federbusch
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Felix Eckelt
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Wiebke Fenske
- Department of Endocrinology, Diabetes, and Metabolism, University Hospital Bonn, Bonn, Germany
| | - Charlotte Fries
- Department of Endocrinology, Diabetes, and Metabolism, University Hospital Bonn, Bonn, Germany
| | - Maria Schmidt
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
- Institute for Laboratory Medicine, Microbiology and Pathobiochemistry, University Hospital Ostwestfalen-Lippe, Lippe, Germany
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9
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Hunold P, Fischer M, Olthoff C, Hildebrand PW, Kaiser T, Staritzbichler R. Detecting Pre-Analytically Delayed Blood Samples for Laboratory Diagnostics Using Raman Spectroscopy. Int J Mol Sci 2023; 24:ijms24097853. [PMID: 37175560 PMCID: PMC10178427 DOI: 10.3390/ijms24097853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 05/15/2023] Open
Abstract
In this proof-of-principle study, we systematically studied the potential of Raman spectroscopy for detecting pre-analytical delays in blood serum samples. Spectra from 330 samples from a liver cirrhosis cohort were acquired over the course of eight days, stored one day at room temperature, and stored subsequently at 4 °C. The spectra were then used to train Convolutional Neural Networks (CNN) to predict the delay to sample examination. We achieved 90% accuracy for binary classification of the serum samples in the groups "without delay" versus "delayed". Spectra recorded on the first day could be distinguished clearly from all subsequent measurements. Distinguishing between spectra taken in the range from the second to the last day seems to be possible as well, but currently, with an accuracy of approximately 70% only. Importantly, filtering out the fluorescent background significantly reduces the precision of detection.
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Affiliation(s)
- Pascal Hunold
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
| | - Markus Fischer
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
| | - Carsten Olthoff
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
| | - Peter W Hildebrand
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany
- University Institute for Laboratory Medicine, Microbiology and Clinical Pathobiochemistry, University Hospital OWL of Bielefeld University, Campus Klinikum Lippe, 32756 Detmold, Germany
| | - René Staritzbichler
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
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10
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Heuft L, Voigt J, Selig L, Stumvoll M, Schlögl H, Kaiser T. Refeeding Syndrome—Diagnostic Challenges and the Potential of Clinical Decision Support Systems. Dtsch Arztebl Int 2023; 120:107-114. [PMID: 36482748 PMCID: PMC10132284 DOI: 10.3238/arztebl.m2022.0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 05/31/2022] [Accepted: 11/15/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Refeeding syndrome (RFS) can occur in malnourished patients when normal, enteral, or parenteral feeding is resumed. The syndrome often goes unrecognized and may, in the most severe cases, result in death. The diagnosis of RFS can be crucially facilitated by the use of clinical decision support systems (CDSS). METHODS The literature in PubMed was searched for current treatment recommendations, randomized intervention studies, and publications on RFS and CDSS. We also took account of insights gained from the development and implementation of our own CDSS for the diagnosis of RFS. RESULTS The identification of high-risk patients and the recognition of manifest RFS is clinically challenging due to the syndrome's unspecific symptoms and physicians' lack of awareness of the risk of this condition. The literature shows that compared to patients without RFS, malnourished patients with RFS have significantly greater 6-month mortality (odds ratio 1.54, 95% confidence interval: [1.04; 2.28]) and an elevated risk of admission to intensive care (odds ratio 2.71 [1.01; 7.27]). In a prospective testing program, use of our own CDSS led to correct diagnosis in two thirds of cases. CONCLUSION RFS is difficult to detect and represents a high risk to the patients affected. Appropriate CDSS can identify such patients and ensure proper professional care.
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11
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Prenzel F, Treudler R, Lipek T, vom Hove M, Kage P, Kuhs S, Kaiser T, Bastl M, Bumberger J, Genuneit J, Hornick T, Klotz S, Zarnowski J, Boege M, Zebralla V, Simon JC, Dunker S. Invasive Growth of Ailanthus altissima Trees is Associated with a High Rate of Sensitization in Atopic Patients. J Asthma Allergy 2022; 15:1217-1226. [PMID: 36071746 PMCID: PMC9443999 DOI: 10.2147/jaa.s373177] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/15/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
- Freerk Prenzel
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Pediatrics, Leipzig, Germany
| | - Regina Treudler
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Dermatology, Venerology and Allergy, Leipzig, Germany
| | - Tobias Lipek
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Pediatrics, Leipzig, Germany
| | - Maike vom Hove
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Pediatrics, Leipzig, Germany
| | - Paula Kage
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Dermatology, Venerology and Allergy, Leipzig, Germany
| | - Simone Kuhs
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Leipzig, Germany
| | - Thorsten Kaiser
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Leipzig, Germany
| | - Maximilian Bastl
- Medical University of Vienna, Department of Otorhinolaryngology, Vienna, Austria
| | - Jan Bumberger
- Helmholtz-Centre for Environmental Research (UFZ), Department Monitoring and Exploration Technologies, Leipzig, Germany
- Helmholtz-Centre for Environmental Research (UFZ), Research Data Management, Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle, Jena, Leipzig, Germany
| | - Jon Genuneit
- Pediatric Epidemiology, Department of Pediatrics, Medical Faculty, Leipzig University, Leipzig, Germany
- German Center for Child and Youth Health, Leipzig/ Dresden, Dresden, Germany
| | - Thomas Hornick
- German Centre for Integrative Biodiversity Research (iDiv) Halle, Jena, Leipzig, Germany
- Helmholtz-Centre for Environmental Research (UFZ), Department Physiological Diversity, Leipzig, Germany
| | - Stefan Klotz
- German Centre for Integrative Biodiversity Research (iDiv) Halle, Jena, Leipzig, Germany
- Helmholtz-Centre for Environmental Research (UFZ), Department Community Ecology, Halle, Germany
| | - Julia Zarnowski
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Dermatology, Venerology and Allergy, Leipzig, Germany
| | - Maren Boege
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Otorhinolaryngology, Head and Neck Surgery, Leipzig, Germany
| | - Veit Zebralla
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Otorhinolaryngology, Head and Neck Surgery, Leipzig, Germany
| | - Jan-Christoph Simon
- Leipziger Interdisciplinary Center for Allergy (LICA), Comprehensive Allergy Center, Leipzig, Germany
- University of Leipzig, Medical Center, Department of Dermatology, Venerology and Allergy, Leipzig, Germany
| | - Susanne Dunker
- German Centre for Integrative Biodiversity Research (iDiv) Halle, Jena, Leipzig, Germany
- Helmholtz-Centre for Environmental Research (UFZ), Department Physiological Diversity, Leipzig, Germany
- Correspondence: Susanne Dunker, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany, Tel +49 341 9733170, Email
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12
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Engelmann C, Aehling NF, Schob S, Nonnenmacher I, Handmann L, Macnaughtan J, Herber A, Surov A, Kaiser T, Denecke T, Jalan R, Seehofer D, Moche M, Berg T. Body fat composition determines outcomes before and after liver transplantation in patients with cirrhosis. Hepatol Commun 2022; 6:2198-2209. [PMID: 35420246 PMCID: PMC9315113 DOI: 10.1002/hep4.1946] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/24/2022] [Accepted: 02/17/2022] [Indexed: 11/25/2022] Open
Abstract
Cachexia occurs in late stages of liver cirrhosis, and a low-fat mass is potentially associated with poor outcome. This study compared different computed tomography (CT)-derived fat parameters with respect to its prognostic impact on the development of complications and death before and after liver transplantation. Between 2001 and 2014, 612 patients with liver cirrhosis without hepatocellular carcinoma listed for liver transplantation met the inclusion criteria, including abdominal CT scan (±200 days to listing). A total of 109 patients without cirrhosis served as controls. The subcutaneous fat index (SCFI), the paraspinal muscle fat index, and the visceral fat index were assessed at L3/L4 level and normalized to the height (cm2 /m2 ). Data were collected and analyzed retrospectively. Low SCFI was associated with a higher rate of ascites and increased C-reactive protein levels (p < 0.001). In addition, multivariate Cox regression analysis adjusting for sex, age, body mass index (BMI), and Model for End-Stage Liver Disease showed that decreasing SCFI was also associated with an increased risk of cirrhosis-related complications (p = 0.003) and death on the transplant wait list (p = 0.013). Increased paraspinal and visceral fat were not only positively correlated with creatinine levels (p < 0.001), BMI, and metabolic comorbidities (all p < 0.001) before transplantation, but also predictive for 1-year mortality after transplantation. Conclusion: The distribution of body fat is a major determinant for complications and outcome in cirrhosis before and after liver transplantation.
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Affiliation(s)
- Cornelius Engelmann
- Division of HepatologyDepartment of Medicine IILeipzig University Medical CenterLeipzigGermany.,Liver Failure GroupInstitute for Liver and Digestive HealthUniversity College LondonRoyal Free CampusLondonUK.,Department of Hepatology and GastroenterologyCampus Virchow-KlinikumCharité-Universitaetsmedizin BerlinBerlinGermany.,522475Berlin Institute of HealthBerlinGermany
| | - Niklas F Aehling
- Division of HepatologyDepartment of Medicine IILeipzig University Medical CenterLeipzigGermany
| | - Stefan Schob
- Department for NeuroradiologyUniversity Hospital LeipzigLeipzigGermany
| | - Ines Nonnenmacher
- Division of HepatologyDepartment of Medicine IILeipzig University Medical CenterLeipzigGermany
| | - Luise Handmann
- Division of HepatologyDepartment of Medicine IILeipzig University Medical CenterLeipzigGermany
| | - Jane Macnaughtan
- Liver Failure GroupInstitute for Liver and Digestive HealthUniversity College LondonRoyal Free CampusLondonUK
| | - Adam Herber
- Division of HepatologyDepartment of Medicine IILeipzig University Medical CenterLeipzigGermany
| | - Alexey Surov
- Department of Diagnostic and Interventional RadiologyUniversity Hospital LeipzigLeipzigGermany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular DiagnosticsUniversity Hospital LeipzigLeipzigGermany
| | - Timm Denecke
- Department of Diagnostic and Interventional RadiologyUniversity Hospital LeipzigLeipzigGermany
| | - Rajiv Jalan
- Liver Failure GroupInstitute for Liver and Digestive HealthUniversity College LondonRoyal Free CampusLondonUK
| | - Daniel Seehofer
- Department of VisceralVascularThoracic and Transplant SurgeryUniversity Hospital LeipzigLeipzigGermany
| | - Michael Moche
- Department of Diagnostic and Interventional RadiologyUniversity Hospital LeipzigLeipzigGermany.,Diagnostic and Interventional RadiologyPark Hospital LeipzigLeipzigGermany
| | - Thomas Berg
- Division of HepatologyDepartment of Medicine IILeipzig University Medical CenterLeipzigGermany
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13
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Kaiser T, Liebscher K, Scholz U, Pfrepper C, Netto J, Drogies T, Tiebel O, Knöfler R, Krause M. Influencing factors and differences in Born aggregometry in specialized hemostaseological centers – results of a multi-center laboratory comparison. TH Open 2022; 6:e213-e220. [PMID: 36046201 PMCID: PMC9395241 DOI: 10.1055/a-1827-7025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/14/2022] [Indexed: 12/02/2022] Open
Abstract
Introduction
Light transmission aggregometry (LTA) is regarded as the gold standard in platelet function diagnostics. However, there is a relevant degree of interlaboratory variability in practical applications.
Objective
The aim of the present study was to develop a practicable laboratory comparison on LTA and to analyze differences and influencing factors in regard to standardization in five specialized hemostaseological centers.
Methods
The study was performed on 30 patients in total. Each center performed LTA on blood samples from six healthy volunteers (three men and three women) using the inductors collagen (Col), adenosine diphosphate (ADP), arachidonic acid (ARA), and ristocetin. The LTA was performed three times using different methods as follows: (1) International Society on Thrombosis and Haemostasis recommendations with identical reagents, (2) in-house protocols and the identical reagents; and (3) in-house protocols and in-house reagents.
Results
A total of 396 measurements of 30 probands were performed. Even after standardization of the protocol and using identical reagents, there were significant differences between the centers regarding the final and maximum aggregation (
p
= 0.002 and <0.001) and further significant differences in the maximum and final aggregation according to the wavelength of the device used to measure the LTA (PAP-8: 430 nm, APACT 4004: 740 nm [
p
< 0.001 each]). Using identical reagents but individual inductor concentrations and laboratory protocols also resulted in different maximum and final aggregation. The largest differences were seen with Col and ristocetin; there were significant influences from the reagents' manufacturers in the results of aggregometry for the inductor Col (
p
< 0.01) but not for ADP, ARA, and ristocetin.
Conclusion
In this study, we proved that there are significant influences from the used aggregometers, inductors concentrations, and manufacturers. These results illustrate the challenges and importance of standardization of LTA.
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Affiliation(s)
- Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany, Leipzig, Germany
| | - Karin Liebscher
- Institute of Transfusion Medicine and Clinical Hemostaseology, Klinikum St. Georg gGmbH, Leipzig, Germany
| | | | | | - Jeffrey Netto
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany, Leipzig, Germany
| | - Tim Drogies
- Medical Central Laboratory Altenburg, Altenburg, Germany
| | - Oliver Tiebel
- Institute of Clinical Chemistry and Laboratory Medicine, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - Ralf Knöfler
- 10. Department of Pediatric Hemostaseology, Univ. Children Hospital, Dresden, Germany
| | - Michael Krause
- MVZ Laboratory Reising-Ackermann MD and Colleagues, Leipzig, Germany
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14
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Kannenberg J, Schnurra C, Reiners N, Henschler R, Buhmann R, Kaiser T, Biemann R, Hönemann M, Ackermann G, Trawinski H, Jassoy C. Sensitivity of SARS-CoV-2 antibody tests with late convalescent sera. J Clin Virol Plus 2022; 1:100038. [PMID: 35262021 PMCID: PMC8372433 DOI: 10.1016/j.jcvp.2021.100038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/23/2021] [Accepted: 08/16/2021] [Indexed: 10/24/2022] Open
Abstract
SARS-CoV-2-specific IgM antibodies wane during the first three months after infection and IgG antibody levels decline. This may limit the ability of antibody tests to identify previous SARS-CoV-2 infection at later time points. To examine if the diagnostic sensitivity of antibody tests falls off, we compared the sensitivity of two nucleoprotein-based antibody tests, the Roche Elecsis II Anti-SARS-CoV-2 and the Abbott SARS-CoV-2 IgG assay and three glycoprotein-based tests, the Abbott SARS-CoV-2 IgG II Quant, Siemens Atellica IM COV2T and Euroimmun SARS-CoV-2 assay with 53 sera obtained 6 months after SARS-CoV-2 infection. The sensitivity of the Roche, Abbott SARS-CoV-2 IgG II Quant and Siemens antibody assays was 94.3% (95% confidence interval (CI) 84.3-98.8%), 98.1 % (95% CI: 89.9-100%) and 100 % (95% CI: 93.3-100%). The sensitivity of the N-based Abbott SARS-CoV-2 IgG and the glycoprotein-based Euroimmun ELISA was 45.3 % (95% CI: 31.6-59.6%) and 83.3% (95% CI: 70.2-91.9%). The nucleoprotein-based Roche and the glycoprotein-based Abbott receptor binding domain (RBD) and Siemens tests were more sensitive than the N-based Abbott and the Euroimmun antibody tests (p = 0.0001 to p = 0.039). The N-based Abbott antibody test was less sensitive 6 months than 4-10 weeks after SARS-CoV-2 infection (p = 0.0001). The findings show that most SARS-CoV-2 antibody assays correctly identified previous infection 6 months after infection. The sensitivity of pan-Ig antibody tests was not reduced at 6 months when IgM antibodies have usually disappeared. However, one of the nucleoprotein-based antibody tests significantly lost diagnostic sensitivity over time.
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Affiliation(s)
- Judith Kannenberg
- Institute for Medical Microbiology and Virology, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Carolin Schnurra
- Institute for Medical Microbiology and Virology, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Nina Reiners
- Institute for Medical Microbiology and Virology, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Reinhard Henschler
- Institute of Transfusion Medicine, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Raymund Buhmann
- Institute of Transfusion Medicine, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Ronald Biemann
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital and Medical Faculty, University of Leipzig Germany
| | - Mario Hönemann
- Institute for Medical Microbiology and Virology, University Hospital and Medical Faculty, University of Leipzig Germany
| | | | - Henning Trawinski
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine II, Interdisciplinary Center for Infectious Diseases, Leipzig University Hospital, Leipzig, Germany
| | - Christian Jassoy
- Institute for Medical Microbiology and Virology, University Hospital and Medical Faculty, University of Leipzig Germany
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15
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Kotzerke D, Costa MW, Voigt J, Kleinhempel A, Schmidt M, Söhnlein T, Kaiser T, Henschler R. Novelle QLL 2020 – welche Auswirkungen haben die neu empfohlenen Hämoglobin-Transfusionstrigger auf die klinische Versorgung? Transfusionsmedizin 2022. [DOI: 10.1055/a-1669-3918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
ZusammenfassungIn der Gesamtnovelle der Querschnittsleitlinie (QLL) Hämotherapie der Bundesärztekammer (BÄK) 2020 wurde der Hämoglobin-Transfusionstrigger (Hb-Transfusionstrigger) bei akutem Blutverlust
ohne zusätzliche Risikofaktoren aufgrund einer Neubewertung der internationalen Evidenz von 3,7 mmol/l (6 g/dl) auf 4,3 mmol/l (7 g/dl) angepasst. Ziel der vorliegenden Studie ist die
retrospektive Analyse des Transfusionsverhaltens von EK bezüglich der Maßgaben der QLL. Zu diesem Zweck analysierten wir individuelle Prä- und Posttransfusions-Hb-Werte von
Erythrozytenkonzentraten (EK), die im 4. Quartal 2019 (4946 EKs, 129 560 Hb-Werte) und 2020 (5502 EKs, 134 404 Hb-Werte) am Universitätsklinikum Leipzig (UKL) transfundiert wurden. Der
mediane Hb-Wert vor der Transfusion betrug 4,3 mmol/l (7 g/dl) (680 medizinische Fälle, die 2724 EK in 1801 Transfusionen im Jahr 2019 erhielten). Von allen Transfusionen im Jahr 2019
zeigten 899 (49,9%) Transfusionen Hb-Werte < 4,3 mmol/l (7 g/dl) vor der Transfusion, während 152 (8,4%) Hb-Werte < 3,7 mmol/l (6 g/dl) aufwiesen. 2020 wurden jeweils vergleichbare
Ergebnisse ermittelt. Wir zeigen, dass der mediane Hb-Anstieg nach der Transfusion eines EK 0,6 mmol/l (1 g/dl) betrug. 34,7% aller Transfusionen erreichten den erwarteten Anstieg von
0,6 mmol/l (1 g/dl) pro EK. Der absolute Anstieg nahm bei Transfusionen mit mehreren EK im Vergleich zu Transfusionen mit einem EK nicht linear zu. Der Grad der Hb-Erhöhung korrelierte
invers mit dem Hb-Wert vor Transfusion. Der Hb-Wert nach der Transfusion wurde bei 96,3% der Fälle innerhalb von 24 Stunden nach Hämotherapie kontrolliert. Zusammenfassend spiegelt das
Transfusionsverhalten generell die Empfehlungen der Leitlinie. Um ein optimiertes, individualisiertes und dennoch restriktives Transfusionsverhalten bei EK zu erreichen, schlagen wir die
Implementierung eines klinischen Entscheidungsunterstützungssystems (CDSS) bei Verschreibung jeder einzelnen EK-Transfusion vor, welches Ärzte bei der Einhaltung der Transfusionsleitlinie
unterstützt und über Abweichungen informiert.
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Affiliation(s)
- David Kotzerke
- Institut für Laboratoriumsmedizin, Klinische Chemie und Molekulare Diagnostik, Universitätsklinikum Leipzig, Leipzig, Deutschland
- Klinik und Poliklinik für Anästhesiologie und Intensivtherapie, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Maria Walter Costa
- Institut für Laboratoriumsmedizin, Klinische Chemie und Molekulare Diagnostik, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Jenny Voigt
- Institut für Laboratoriumsmedizin, Klinische Chemie und Molekulare Diagnostik, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Alisa Kleinhempel
- Institut für Transfusionsmedizin, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Maria Schmidt
- Institut für Laboratoriumsmedizin, Klinische Chemie und Molekulare Diagnostik, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Tim Söhnlein
- Institut für Transfusionsmedizin, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Thorsten Kaiser
- Institut für Laboratoriumsmedizin, Klinische Chemie und Molekulare Diagnostik, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Reinhard Henschler
- Institut für Transfusionsmedizin, Universitätsklinikum Leipzig, Leipzig, Deutschland
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16
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Gärtner C, Langhammer R, Schmidt M, Federbusch M, Wirkner K, Löffler M, Isermann B, Laufs U, Wachter R, Kaiser T. Revisited Upper Reference Limits for Highly Sensitive Cardiac Troponin T in Relation to Age, Sex, and Renal Function. J Clin Med 2021; 10:5508. [PMID: 34884210 PMCID: PMC8658212 DOI: 10.3390/jcm10235508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/15/2021] [Accepted: 11/13/2021] [Indexed: 12/03/2022] Open
Abstract
(1) Background: Highly sensitive cardiac troponin T (hs-cTnT) plays an essential role in the diagnosis of myocardial injury. The upper reference limit of the respective assay is generally applied, irrespective of age, renal function, or sex. We aimed to identify age-adjusted and sex-adjusted upper reference limits in relation to renal function in a large population-based cohort without cardiac diseases. (2) Methods: We included 5428 subjects of the population-based LIFE-Adult cohort, free of diagnosed cardiac diseases. Sex-adjusted and age-adjusted 99th percentiles for hs-cTnT in subjects with preserved renal function were obtained. (3) Results: The hs-cTnT values were higher in men of all age groups. In both sexes, an increasing age positively correlated with higher hs-cTnT values. Hs-cTnT weakly correlated with serum creatinine. The three-dimensional analysis of age, creatinine, and hs-cTnT showed no relevant additional effect of creatinine on hs-cTnT. In men aged above 60 and women above 70, the calculated 99th percentiles clearly exceeded the commonly applied thresholds. (4) Conclusion: Age and sex have a major impact on the serum concentration of hs-cTnT, while renal function does not. We propose to consider age-adjusted and sex-adjusted reference values.
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Affiliation(s)
- Christiane Gärtner
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, 04109 Leipzig, Germany; (C.G.); (M.S.); (M.F.); (B.I.)
| | - Romy Langhammer
- Clinic and Polyclinic for Cardiology, University of Leipzig Medical Center, 04103 Leipzig, Germany; (R.L.); (U.L.); (R.W.)
| | - Maria Schmidt
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, 04109 Leipzig, Germany; (C.G.); (M.S.); (M.F.); (B.I.)
| | - Martin Federbusch
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, 04109 Leipzig, Germany; (C.G.); (M.S.); (M.F.); (B.I.)
| | - Kerstin Wirkner
- LIFE—Leipzig Research Center for Civilization Diseases, University of Leipzig, 04109 Leipzig, Germany; (K.W.); (M.L.)
- Institute for Medical Informatics, Statistics, and Epidemiology (IMISE), University of Leipzig, 04109 Leipzig, Germany
| | - Markus Löffler
- LIFE—Leipzig Research Center for Civilization Diseases, University of Leipzig, 04109 Leipzig, Germany; (K.W.); (M.L.)
- Institute for Medical Informatics, Statistics, and Epidemiology (IMISE), University of Leipzig, 04109 Leipzig, Germany
| | - Berend Isermann
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, 04109 Leipzig, Germany; (C.G.); (M.S.); (M.F.); (B.I.)
| | - Ulrich Laufs
- Clinic and Polyclinic for Cardiology, University of Leipzig Medical Center, 04103 Leipzig, Germany; (R.L.); (U.L.); (R.W.)
| | - Rolf Wachter
- Clinic and Polyclinic for Cardiology, University of Leipzig Medical Center, 04103 Leipzig, Germany; (R.L.); (U.L.); (R.W.)
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center and Medical Faculty, 04109 Leipzig, Germany; (C.G.); (M.S.); (M.F.); (B.I.)
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17
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Staritzbichler R, Hunold P, Estrela-Lopis I, Hildebrand PW, Isermann B, Kaiser T. Raman spectroscopy on blood serum samples of patients with end-stage liver disease. PLoS One 2021; 16:e0256045. [PMID: 34492024 PMCID: PMC8423274 DOI: 10.1371/journal.pone.0256045] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/28/2021] [Indexed: 12/05/2022] Open
Abstract
Raman spectroscopy has shown to be a promising method for the examination of biomedical samples. However, until now, its efficacy has not been established in clinical diagnostics. In this study, Raman spectroscopy’s potential application in medical laboratories is evaluated for a large variety (38) of biomarkers. Given 234 serum samples from a cohort of patients with different stages of liver disease, we performed Raman spectroscopy at 780nm excitation wavelength. The Raman spectra were analyzed in combination with the results of routine diagnostics using specifically developed complex mathematical algorithms, including fluorescence filtering, frequency subset selection and several overfitting circumventing strategies, such as independent validation. With the results of this cohort, which were validated in 328 independent samples, a significant proof-of-concept study was completed. This study highlights the need to prevent overfitting and to use independent data for validation. The results reveal that Raman spectroscopy has high potential for use in medical laboratory diagnostics to simultaneously quantify multiple biomarkers.
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Affiliation(s)
- René Staritzbichler
- Institute for Medical Physics and Biophysics, Leipzig University, Leipzig, Germany
- * E-mail: (RS); (TK)
| | - Pascal Hunold
- Institute for Medical Physics and Biophysics, Leipzig University, Leipzig, Germany
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Irina Estrela-Lopis
- Institute for Medical Physics and Biophysics, Leipzig University, Leipzig, Germany
| | | | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
- * E-mail: (RS); (TK)
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18
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Kister TS, Remmler J, Schmidt M, Federbusch M, Eckelt F, Isermann B, Richter H, Wehner M, Krause U, Halbritter J, Cundius C, Voigt M, Kehrer A, Telle JM, Kaiser T. Acute kidney injury and its progression in hospitalized patients-Results from a retrospective multicentre cohort study with a digital decision support system. PLoS One 2021; 16:e0254608. [PMID: 34252151 PMCID: PMC8274880 DOI: 10.1371/journal.pone.0254608] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/29/2021] [Indexed: 01/20/2023] Open
Abstract
In this retrospective multicentric cohort study, we evaluate the potential benefits of a clinical decision support system (CDSS) for the automated detection of Acute kidney injury (AKI). A total of 80,389 cases, hospitalized from 2017 to 2019 at a tertiary care hospital (University of Leipzig Medical Center (ULMC)) and two primary care hospitals (Muldentalkliniken (MTL)) in Germany, were enrolled. AKI was defined and staged according to the Kidney disease: improving global outcomes (KDIGO) guidelines. Clinical and laboratory data was automatically collected from electronic patient records using the frameworks of the CDSS. In our cohort, we found an overall AKI incidence proportion of 12.1%. We identified 6,393/1,703/1,604 cases as AKI stage 1/2/3 (8.0%/2.1%/2.0%, respectively). Administrative coding with N17 (ICD-10-GM) was missing in 55.8% of all AKI cases with the potential for additional diagnosis related groups (DRG) reimbursement of 1,204,200 € in our study. AKI was associated with higher hospital mortality, increased length of hospitalisation and more frequent need of renal replacement therapy. A total of 19.1% of AKI cases (n = 1,848) showed progression to higher AKI stages (progressive AKI) during hospitalization. These cases presented with considerably longer hospitalization, higher rates of renal replacement therapy and increased mortality (p<0.001, respectively). Furthermore, progressive AKI was significantly associated with sepsis, shock, liver cirrhosis, myocardial infarction, and cardiac insufficiency. AKI, and especially its progression during hospitalization, is strongly associated with adverse outcomes. Our automated CDSS enables timely detection and bears potential to improve AKI outcomes, notably in cases of progressive AKI.
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Affiliation(s)
- Thea Sophie Kister
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
| | - Johannes Remmler
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
| | - Maria Schmidt
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
| | - Martin Federbusch
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
| | - Felix Eckelt
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
| | - Heike Richter
- Muldentalkliniken GmbH Non-Profit Company, Hospital Grimma and Wurzen, Grimma, Germany
| | - Markus Wehner
- Muldentalkliniken GmbH Non-Profit Company, Hospital Grimma and Wurzen, Grimma, Germany
| | - Uwe Krause
- Muldentalkliniken GmbH Non-Profit Company, Hospital Grimma and Wurzen, Grimma, Germany
| | - Jan Halbritter
- Medical Department III, Division of Nephrology, University of Leipzig Medical Center, Leipzig, Germany
| | - Carina Cundius
- Bereich 1 –Informationsmanagement, University of Leipzig Medical Center, Leipzig, Germany
| | - Markus Voigt
- Bereich 1 –Informationsmanagement, University of Leipzig Medical Center, Leipzig, Germany
| | | | | | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University of Leipzig Medical Center, Leipzig, Germany
- * E-mail:
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19
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van der Ven JPG, Sadighy Z, Valsangiacomo Buechel ER, Sarikouch S, Robbers-Visser D, Kellenberger CJ, Kaiser T, Beerbaum P, Boersma E, Helbing WA. Multicentre reference values for cardiac magnetic resonance imaging derived ventricular size and function for children aged 0-18 years. Eur Heart J Cardiovasc Imaging 2021; 21:102-113. [PMID: 31280290 PMCID: PMC6923680 DOI: 10.1093/ehjci/jez164] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 02/25/2019] [Accepted: 06/03/2019] [Indexed: 11/17/2022] Open
Abstract
Aims Cardiovascular magnetic resonance (CMR) imaging is an important tool in the assessment of paediatric cardiac disease. Reported reference values of ventricular volumes and masses in the paediatric population are based on small cohorts and several methodologic differences between studies exist. We sought to create steady-state free precession (SSFP) CMR reference values for biventricular volumes and mass by combining data of previously published studies and re-analysing these data in a standardized manner. Methods and results A total of 141 healthy children (68 boys) from three European centres underwent cine-SSFP CMR imaging. Cardiac structures were manually contoured for end-diastolic and end-systolic phases in the short-axis orientation according to current standardized CMR post-processing guidelines. Volumes and masses were derived from these contours. Age-related reference curves were constructed using the lambda mu sigma method. Median age was 12.7 years (range 0.6–18.5). We report biventricular volumes and masses, unindexed and indexed for body surface area, stratified by age groups. In general, boys had approximately 15% higher biventricular volumes and masses compared with girls. Only in children aged <6 years old no gender differences could be observed. Left ventricle ejection fraction was slightly higher in boys in this study population (median 67% vs. 65%, P = 0.016). Age-related reference curves showed non-linear relations between age and cardiac parameters. Conclusion We report volumetric SSFP CMR imaging reference values for children aged 0–18 years old in a relatively large multi-centre cohort. These references can be used in the follow-up of paediatric cardiac disease and for research purposes.
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Affiliation(s)
- J P G van der Ven
- Department of Pediatrics, Division of Cardiology, Erasmus University Medical Center-Sophia Children's Hospital, Doctor Molewaterplein 40, GD, Rotterdam, The Netherlands.,Netherlands Heart Institute, Moreelsepark 1, EP, Utrecht, The Netherlands
| | - Z Sadighy
- Department of Pediatrics, Division of Cardiology, Erasmus University Medical Center-Sophia Children's Hospital, Doctor Molewaterplein 40, GD, Rotterdam, The Netherlands
| | | | - S Sarikouch
- Department of Heart, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Carl Neuberg-Strasse 1, Hannover, Germany
| | - D Robbers-Visser
- Department of Cardiology, Amsterdam Medical Center, Postbus 22660, 1100 DD, Amsterdam, The Netherlands
| | - C J Kellenberger
- Department of Diagnostic Imaging, University Children's Hospital, Steinwiesstrasse 75, Zurich, Switzerland
| | - T Kaiser
- Pediatric Heart Centre, University Children's Hospital, Steinwiesstrasse 75, Zurich, Switzerland
| | - P Beerbaum
- Department of Pediatric Cardiology and Intensive Care, Hannover Medical School, Carl Neuberg-Strasse 1, Hannover, Germany
| | - E Boersma
- Department of Cardiology, Erasmus University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - W A Helbing
- Department of Pediatrics, Division of Cardiology, Erasmus University Medical Center-Sophia Children's Hospital, Doctor Molewaterplein 40, GD, Rotterdam, The Netherlands.,Department of Radiology, Erasmus University Medical Center, Sophia Children's Hospital, Doctor Molewaterplein 40, GD, Rotterdam, The Netherlands
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20
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Walter Costa MB, Wernsdorfer M, Kehrer A, Voigt M, Cundius C, Federbusch M, Eckelt F, Remmler J, Schmidt M, Pehnke S, Gärtner C, Wehner M, Isermann B, Richter H, Telle J, Kaiser T. The Clinical Decision Support System AMPEL for Laboratory Diagnostics: Implementation and Technical Evaluation. JMIR Med Inform 2021; 9:e20407. [PMID: 34081013 PMCID: PMC8212627 DOI: 10.2196/20407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/28/2020] [Accepted: 11/20/2020] [Indexed: 12/21/2022] Open
Abstract
Background Laboratory results are of central importance for clinical decision making. The time span between availability and review of results by clinicians is crucial to patient care. Clinical decision support systems (CDSS) are computational tools that can identify critical values automatically and help decrease treatment delay. Objective With this work, we aimed to implement and evaluate a CDSS that supports health care professionals and improves patient safety. In addition to our experiences, we also describe its main components in a general manner to make it applicable to a wide range of medical institutions and to empower colleagues to implement a similar system in their facilities. Methods Technical requirements must be taken into account before implementing a CDSS that performs laboratory diagnostics (labCDSS). These can be planned within the functional components of a reactive software agent, a computational framework for such a CDSS. Results We present AMPEL (Analysis and Reporting System for the Improvement of Patient Safety through Real-Time Integration of Laboratory Findings), a labCDSS that notifies health care professionals if a life-threatening medical condition is detected. We developed and implemented AMPEL at a university hospital and regional hospitals in Germany (University of Leipzig Medical Center and the Muldental Clinics in Grimma and Wurzen). It currently runs 5 different algorithms in parallel: hypokalemia, hypercalcemia, hyponatremia, hyperlactatemia, and acute kidney injury. Conclusions AMPEL enables continuous surveillance of patients. The system is constantly being evaluated and extended and has the capacity for many more algorithms. We hope to encourage colleagues from other institutions to design and implement similar CDSS using the theory, specifications, and experiences described in this work.
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Affiliation(s)
- Maria Beatriz Walter Costa
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany.,Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Mark Wernsdorfer
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany.,Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | | | - Markus Voigt
- Information Management, University of Leipzig Medical Center, Leipzig, Germany
| | - Carina Cundius
- Information Management, University of Leipzig Medical Center, Leipzig, Germany
| | - Martin Federbusch
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Felix Eckelt
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Johannes Remmler
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Maria Schmidt
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany.,Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Sarah Pehnke
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Christiane Gärtner
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany.,Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Markus Wehner
- Muldental Clinics GmbH Non-Profit Company, Hospital Grimma and Wurzen, Grimma, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
| | - Heike Richter
- Muldental Clinics GmbH Non-Profit Company, Hospital Grimma and Wurzen, Grimma, Germany
| | | | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry und Molecular Diagnostics, University of Leipzig Medical Center, Leipzig, Germany
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21
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Schuff-Werner P, Pönisch W, Berg T, Kaiser T. Transient Howell-Jolly-body-like cytoplasmic inclusions in neutrophils after severe intoxication with alpha-lipoic acid. Scand J Clin Lab Invest 2020; 81:8-11. [PMID: 33345642 DOI: 10.1080/00365513.2020.1855468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
After intravenous supplementation of an unintentionally high dose of the antioxidant alpha-lipoic acid (ALA), a 53-year-old female complained of myalgia, chills and nausea, and showed signs of haemorrhagic diathesis. The laboratory findings were excessive hyperferritinemia, leukoerythroblastosis, severe thrombocytopenia, elevated liver enzymes and impaired coagulation. The toxicological tests resulted in an ALA serum concentration of 10 280 µg/L. The peripheral blood film of the patient showed some neutrophil dysplasia with unusual small dark-blue stained round cytoplasmic inclusions resembling 'Howell-Jolly-body-like' (HJBL) cytoplasmic inclusions, aptly named due to the morphologic similarity to their erythrocytic counterparts. Such HJBL inclusions are occasionally associated with acquired immunodeficiency, or immunosuppressive or cytostatic treatment. An association with ALA intoxication has not been described before. There are only a few reports on unintentional, harmful and lethal intoxications with ALA. The underlying molecular background of its toxicity on liver function or haematopoiesis is not yet known in detail, but ALA seems to interact with enzyme functions, e.g. with mitochondrial enzyme-complexes, possibly due to its pro-oxidant potential at high doses.
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Affiliation(s)
- Peter Schuff-Werner
- Medical Laboratory Osnabrueck, Georgsmarienhuette, Germany.,Institute of Clinical Chemistry and Laboratory Medicine, Rostock University Medical Center, Rostock, Germany
| | - Wolfram Pönisch
- Clinic of Internal Medicine I, University Clinics Leipzig, Leipzig, Germany
| | - Thomas Berg
- Department of Internal Medicine, Neurology and Dermatology, Clinic and Policlinic of Gastroenterology, Hepatology Section, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Leipzig, Germany
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22
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Wolf J, Kaiser T, Pehnke S, Nickel O, Lübbert C, Kalbitz S, Arnold B, Ermisch J, Berger L, Schroth S, Isermann B, Borte S, Biemann R. Differences of SARS-CoV-2 serological test performance between hospitalized and outpatient COVID-19 cases. Clin Chim Acta 2020; 511:352-359. [PMID: 33159952 PMCID: PMC7642750 DOI: 10.1016/j.cca.2020.10.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/08/2020] [Accepted: 10/26/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Serological severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibody assays differ in the target antigen specificity, e.g. of antibodies directed against the viral spike or the nucleocapsid protein, and in the spectrum of detected immunoglobulins. The aim of the study was to evaluate the performance of two different routinely used immunoassays in hospitalized and outpatient COVID-19 cases. METHODS The test characteristics of commercially available spike1 protein-based serological assays (Euroimmun, EI-assays), determining IgA or IgG and nucleocapsid-based assays (Virotech, VT-assays) determining IgA, IgM or IgG were compared in 139 controls and 116 hospitalized and outpatient COVID-19 cases. RESULTS Hospitalized COVID-19 patients (n = 51; 115 samples) showed significantly higher concentrations of antibodies against SARS-CoV-2 and differed from outpatient cases (n = 65) by higher age, higher disease severity scores and earlier follow up blood sampling. Sensitivity of the two IgG assays was comparable in hospitalized patients tested ≥ 14 days (EI-assay: 88%, CI95% 67.6-99.9; VT-assay: 96%, CI95% 77.7-99.8). In outpatient COVID-19 cases sensitivity was significantly lower in the VT-assay (86.2%, CI95% 74.8-93.1) compared with the EI-assay (98.5%, CI95% 90.6-99.9). Assays for IgA and IgM demonstrated a lack of specificity or sensitivity. CONCLUSIONS Our results indicate that SARS-CoV-2 serological assays may need to be optimized to produce reliable results in outpatient COVID-19 cases who are low or even asymptomatic. Assays for IgA and IgM have limited diagnostic performance and do not prove an additional value for population-based screening approaches.
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Affiliation(s)
- Johannes Wolf
- Department of Laboratory Medicine, Hospital St. Georg, Leipzig, Germany,ImmunoDeficiencyCenter Leipzig (IDCL) at Hospital St. Georg Leipzig, Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiency Diseases, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | - Sarah Pehnke
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | - Olaf Nickel
- Department of Laboratory Medicine, Hospital St. Georg, Leipzig, Germany
| | - Christoph Lübbert
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany,Interdisciplinary Center for Infectious Diseases, Leipzig University Hospital, Leipzig, Germany,Division of Infectious Diseases and Tropical Medicine, Department of Medicine II, Leipzig University Hospital, Leipzig, Germany
| | - Sven Kalbitz
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany
| | - Benjamin Arnold
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany
| | - Jörg Ermisch
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany
| | - Luisa Berger
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany
| | - Stefanie Schroth
- Department of Infectious Diseases/Tropical Medicine, Nephrology and Rheumatology, Hospital St. Georg, Leipzig, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | - Stephan Borte
- Department of Laboratory Medicine, Hospital St. Georg, Leipzig, Germany,ImmunoDeficiencyCenter Leipzig (IDCL) at Hospital St. Georg Leipzig, Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiency Diseases, Leipzig, Germany,Department of Laboratory Medicine, Division of Clinical Immunology, Karolinska Institute at Karolinska University Hospital, Huddinge, Sweden
| | - Ronald Biemann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany,Corresponding author at: Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital Leipzig, Paul List Straße 16-18, 04103 Leipzig, Germany
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23
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Weidhase L, de Fallois J, Haußig E, Kaiser T, Mende M, Petros S. Myoglobin clearance with continuous veno-venous hemodialysis using high cutoff dialyzer versus continuous veno-venous hemodiafiltration using high-flux dialyzer: a prospective randomized controlled trial. Crit Care 2020; 24:644. [PMID: 33176824 PMCID: PMC7659077 DOI: 10.1186/s13054-020-03366-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023]
Abstract
Background Myoglobin clearance in acute kidney injury requiring renal replacement therapy is important because myoglobin has direct renal toxic effects. Clinical data comparing different modalities of renal replacement therapy addressing myoglobin clearance are limited. This study aimed to compare two renal replacement modalities regarding myoglobin clearance. Methods In this prospective, randomized, single-blinded, single-center trial, 70 critically ill patients requiring renal replacement therapy were randomized 1:1 into an intervention arm using continuous veno-venous hemodialysis with high cutoff dialyzer and a control arm using continuous veno-venous hemodiafiltration postdilution with high-flux dialyzer. Regional citrate anticoagulation was used in both groups to maintain the extracorporeal circuit. The concentrations of myoglobin, urea, creatinine, β2-microglobulin, interleukin-6 and albumin were measured before and after the dialyzer at 1 h, 6 h, 12 h, 24 h and 48 h after initiating continuous renal replacement therapy. Results Thirty-three patients were allocated to the control arm (CVVHDF with high-flux dialyzer) and 35 patients to the intervention arm (CVVHD with high cutoff dialyzer). Myoglobin clearance, as a primary endpoint, was significantly better in the intervention arm than in the control arm throughout the whole study period. The clearance values for urea and creatinine were higher in the control arm. There was no measurable albumin clearance in both arms. The clearance data for β2-microglobulin and interleukin-6 were non-inferior in the intervention arm compared to those for the control arm. Dialyzer lifespan was 57.0 [38.0, 72.0] hours in the control arm and 70.0 [56.75, 72.0] hours in the intervention arm (p = 0.029). Conclusions Myoglobin clearance using continuous veno-venous hemodialysis with high cutoff dialyzer and regional citrate anticoagulation is better than that with continuous veno-venous hemodiafiltration with regional citrate anticoagulation. Trial registration German Clinical Trials Registry (DRKS00012407); date of registration 23/05/2017. https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00012407.
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Affiliation(s)
- Lorenz Weidhase
- Medical Intensive Care Unit, University Hospital Leipzig, Leipzig, Saxony, Germany.
| | - Jonathan de Fallois
- Division of Nephrology, Medical Department III, University Hospital Leipzig, Leipzig, Saxony, Germany
| | - Elena Haußig
- Medical Intensive Care Unit, University Hospital Leipzig, Leipzig, Saxony, Germany
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Saxony, Germany
| | - Meinhard Mende
- Institute for Medical Informatics, Statistics and Epidemiology, University Leipzig, Leipzig, Saxony, Germany
| | - Sirak Petros
- Medical Intensive Care Unit, University Hospital Leipzig, Leipzig, Saxony, Germany
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24
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Kaiser T, Kaminski S, Jupke A. Bite the bullet: Stabilization of formic acid favors CO
2
‐based production but negatively influences the esterification reaction. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- T. Kaiser
- RWTH Aachen University Fluid Process Engineering (AVT. FVT) Forckenbeckstr. 51 52074 Aachen Germany
| | - S. Kaminski
- RWTH Aachen University Fluid Process Engineering (AVT. FVT) Forckenbeckstr. 51 52074 Aachen Germany
| | - A. Jupke
- RWTH Aachen University Fluid Process Engineering (AVT. FVT) Forckenbeckstr. 51 52074 Aachen Germany
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25
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Heinemann ML, Elsing L, Kaiser T, Boettcher M, Herber A, Seehofer D, Berg T, Ceglarek U. Challenges of LC-MS/MS ethyl glucuronide analysis in abstinence monitoring of liver transplant candidates. Clin Chem Lab Med 2020; 58:1265-1270. [PMID: 32112697 DOI: 10.1515/cclm-2019-1302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 01/31/2020] [Indexed: 01/16/2023]
Abstract
Background Urinary ethyl glucuronide (EtG) has emerged as the biomarker of choice for alcohol abstinence monitoring in forensic toxicology and is now used in the listing decision process for liver transplantations (LTs) in the German transplant program. However, EtG analysis in this patient group is challenging due to severely impaired liver function, renal failure, co-morbidities and multidrug regimens. The aim of our study was to evaluate liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based EtG analysis for a precise abstinence monitoring in transplant candidates. Methods EtG and ethyl sulfate (EtS) were analyzed by a commercial LC-MS/MS assay in 1787 spot urine samples of 807 patients (>85% from the Department of Hepatology) using a combination of quantifier and two qualifier mass transitions for each analyte. Influences of bacterial contamination, kidney and liver function were investigated. Results Two hundred and sixty-four urine samples had elevated (≥0.5 mg/L) EtG concentrations when only analyzing one quantifier mass transition. Eleven results (4.2%) were found to be false positive after combining three mass transitions for EtG quantification and verification with parallel analysis of EtS. Decreased kidney function was associated with a significantly higher rate of positive EtG samples. One of the false positive results was caused by bacterial metabolism. Conclusions Multimorbid pre-transplant patients have a high risk of individual analytical disturbances of EtG results obtained by LC-MS/MS. Therefore, EtG and EtS should always be measured by a combination of one quantifier and two qualifiers each and evaluated together.
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Affiliation(s)
- Mitja L Heinemann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Liebigstr. 27, 04103 Leipzig, Germany, Phone: +493419722200, Fax: +493419722209
| | - Louis Elsing
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | | | - Adam Herber
- Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Clinic and Policlinic of Visceral-, Transplant-, Thoracic- and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
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Schnurra C, Reiners N, Biemann R, Kaiser T, Trawinski H, Jassoy C. Comparison of the diagnostic sensitivity of SARS-CoV-2 nucleoprotein and glycoprotein-based antibody tests. J Clin Virol 2020; 129:104544. [PMID: 32663788 PMCID: PMC7836838 DOI: 10.1016/j.jcv.2020.104544] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 07/06/2020] [Indexed: 01/28/2023]
Abstract
The sensitivity of commercial SARS CoV-2 IgG antibody tests was 64.4–93.2 %. Positivity rate was higher with sera obtained 4 weeks than 2−3 weeks after RNA testing. Antibody tests based on nucleoprotein and glycoprotein showed similar sensitivity. Nucleoprotein- and glycoprotein-based antibody tests reacted with different sera.
The emergence of the severe acute respiratory syndrome coronavirus-2 (SARS CoV-2) has been followed by the rapid development of antibody tests. To assess the utility of the tests for clinical use and seroepidemiologic studies, we examined the sensitivity of commercial antibody tests from Roche, Abbott, Novatec, Virotech Siemens, Euroimmun, and Mediagnost in a prospective diagnostic study. The tests were evaluated with 73 sera from SARS CoV-2 RNA positive individuals with mild to moderate disease or asymptomatic infection. Sera were obtained at 2−3 weeks (N = 25) or > 4 weeks (N = 48) after symptom onset and viral RNA test. The overall sensitivity of the tests ranged from 64.4–93.2%. The most sensitive assays recognized 95.8–100 % of the sera obtained after 4 weeks or later. Sera drawn at 2−3 weeks were recognized with lower sensitivity indicating that the optimal time point for serologic testing is later than 3 weeks after onset of the disease. Nucleoprotein- and glycoproteinbased assays had similar sensitivity indicating that tests with both antigens are suitable for serological diagnostics. Breakdown of the test results showed that nucleoprotein- and glycoprotein-based tests of comparable sensitivity reacted with different sets of sera. The observation indicates that a combination of nucleoprotein- and glycoprotein-based tests would increase the percentage of positive results.
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Affiliation(s)
- Carolin Schnurra
- Institute for Virology, University Clinics and Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Nina Reiners
- Institute for Virology, University Clinics and Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Ronald Biemann
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Clinics and Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Clinics and Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Henning Trawinski
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, University Clinics and Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Christian Jassoy
- Institute for Virology, University Clinics and Medical Faculty, University of Leipzig, Leipzig, Germany.
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Bucher JN, Hollenbach M, Strocka S, Gaebelein G, Moche M, Kaiser T, Bartels M, Hoffmeister A. Segmental intrahepatic cholestasis as a technical complication of the transjugular intrahepatic porto-systemic shunt. World J Gastroenterol 2019; 25:6430-6439. [PMID: 31798279 PMCID: PMC6881513 DOI: 10.3748/wjg.v25.i43.6430] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/25/2019] [Accepted: 11/07/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Segmental intrahepatic cholestasis caused by transjugular intrahepatic portosystemic shunt (TIPS) (SIC-T), is a rare complication of this technique and only referred by case reports. Thus, we conducted a systematic, retrospective analysis to provide evidence regarding prevalence and consequences of this TIPS-induced bile duct compression.
AIM To assess prevalence and outcome of SIC-T in a large TIPS-cohort.
METHODS In this retrospective cohort study, we screened the institutional databases for all consecutive patients that were treated by TIPS-placement or TIPS-revision between January 2005 and August 2013. We analyzed radiologic images for signs of biliary congestion. Cases that were indicative of SIC-T were reviewed by two independent radiologists and additional patient data was collected. Descriptive statistics of patient demographics, indications for TIPS and procedural details were registered. Logistic regression analysis was performed to identify predictors for the development of SIC-T.
RESULTS We analyzed 135 cirrhotic patients who underwent TIPS (mean age 55 years, 79% male gender). Etiology of cirrhosis was alcohol in most cases and indications for TIPS were mainly refractory ascites and recurrent variceal bleeding. TIPS revision was necessary in 31 patients. We identified 4 cases (2.9%) of SIC-T in direct proximity of the TIPS-stent. Diagnosis was confirmed by CT-scan, MRI or endoscopic retrograde cholangio pancreaticography (ERCP). In two patients TIPS was implanted via the right and in one through the medial hepatic vein. One patient received TIPS-prolongation by multiple revisions. Most patients were asymptomatic but one cholangitic abscess necessitated a transhepatic drain. Logistic regression analysis identified TIPS-placement other than from medial hepatic vein to right portal vein as risk factor (OR 21.0) for SIC-T.
CONCLUSION SIC-T ads to (mostly late) complications in the interventional treatment of cirrhotic portal hypertensions and can lead to cholangitic abscesses. Patients, particularly with multiple interventions, should be screened for SIC-T.
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Affiliation(s)
- Julian Nikolaus Bucher
- Department of Surgery, Munich University Hospital at Großhadern, Bavaria, Munich 81377, Germany
| | - Marcus Hollenbach
- Medical Department II–Gastroenterology, Hepatology, Infectious Diseases, Pulmonology, University of Leipzig Medical Center, Saxony, Leipzig 04103, Germany
| | - Steffen Strocka
- Department of Diagnostic and Interventional Radiology, University of Leipzig Medical Center, Saxony, Leipzig 04103, Germany
| | - Gereon Gaebelein
- Department of General, Visceral, Vascular and Pediatric Surgery, University of Saarland, Saarland, Homburg 66421, Germany
| | - Michael Moche
- Department of Diagnostic and Interventional Radiology, Bavaria, Nuernberg 90411, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center, Saxony, Leipzig 04310, Germany
| | - Michael Bartels
- Department for General and Visceral Surgery, Helios Park-Klinikum Leipzig, Saxony, Leipzig 04289, Germany
| | - Albrecht Hoffmeister
- Medical Department II–Gastroenterology, Hepatology, Infectious Diseases, Pulmonology, University of Leipzig Medical Center, Leipzig 04103, Saxony, Germany
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Schneider C, Remmler J, Netto J, Seehofer D, Engelmann C, Berg T, Thiery J, Kaiser T. Copeptin – a biomarker of short-term mortality risk (7 days) in patients with end-stage liver disease. ACTA ACUST UNITED AC 2019; 57:1897-1905. [DOI: 10.1515/cclm-2019-0023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/09/2019] [Indexed: 12/29/2022]
Abstract
Abstract
Background
For many patients with end-stage liver disease, liver transplantation represents the only curative therapy. Transplant recipients are scored and ranked using the model for end-stage liver disease (MELD/MELD-Na). Circulatory impairment is known to deteriorate outcomes; however, it is not incorporated into the current allocation system’s score. The aim of our study is to analyze the predictive value of copeptin as a biomarker of circulatory impairment and increased short-term mortality risk in patients with end-stage liver disease.
Methods
We conducted a retrospective observational study of 615 patients with end-stage liver disease. Patients were recruited using assessments performed during the evaluation process for liver transplantation. Copeptin values were analyzed in comparison to MELD-Na, interleukin 6 (IL-6), and C-reactive protein (CRP).
Results
Elevated levels of copeptin, IL-6 and CRP, as well as high MELD-Na scores, were significantly correlated with mortality. In a comparison of copeptin-tertiles, patients in group T3 (16.3 pmol/L or more) showed a significantly higher mortality risk (hazard ratio 11.2, p < 0.001). After adjusting for MELD-Na, copeptin remains an independent predictor of mortality. It shows its greatest prognostic strength in short-term mortality, where it performs comparable to MELD-Na (AUROC for 7 day-mortality, 0.941/0.939; p = 0.981) and shows an additional predictive value to MELD-Na for short-term mortality (7 days, p: 0.046; 30 days, p: 0.006).
Conclusions
Copeptin presents a valuable individual biomarker in detecting patients at risk for short-term mortality. Further studies should be performed to confirm our findings.
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Affiliation(s)
- Christoph Schneider
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics , University Hospital Leipzig , Leipzig , Germany
| | - Johannes Remmler
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics , University Hospital Leipzig , Leipzig , Germany
| | - Jeffrey Netto
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics , University Hospital Leipzig , Leipzig , Germany
| | - Daniel Seehofer
- Department of Visceral, Transplant, Thoracic and Vascular, Surgery , University Hospital Leipzig , Leipzig , Germany
| | - Cornelius Engelmann
- Section of Hepatology, Clinic for Gastroenterology , University Clinic Leipzig , Leipzig , Germany
| | - Thomas Berg
- Section of Hepatology, Clinic for Gastroenterology , University Clinic Leipzig , Leipzig , Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics , University Hospital Leipzig , Leipzig , Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics , University Hospital Leipzig , Leipzig , Germany
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Van Der Ven JPG, Valsangiacomo Buechel ER, Sarikouch S, Robbers-Visser D, Sadighy Z, Kellenberger CJ, Kaiser T, Beerbaum P, Helbing WA. P422Evaluation of semi-automated threshold-based CMR post-processing of ventricular size and function in a large healthy pediatric cohort. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez118.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | - S Sarikouch
- Hannover Medical School, Department of Heart, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - D Robbers-Visser
- Academic Medical Center of Amsterdam, Cardiology, Amsterdam, Netherlands (The)
| | - Z Sadighy
- Erasmus Medical Center, Paediatrics, Rotterdam, Netherlands (The)
| | - C J Kellenberger
- University Hospital Zurich, Diagnostic Imaging, Zurich, Switzerland
| | - T Kaiser
- University Hospital Zurich, Pediatric Heart Centre, Zurich, Switzerland
| | - P Beerbaum
- Hannover Medical School, Paediatric Cardiology and Intensive Care, Hannover, Germany
| | - W A Helbing
- Erasmus Medical Center, Paediatrics and Radiology, Rotterdam, Netherlands (The)
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Netto J, Jansen-Winkeln B, Thieme R, Eckardt J, Ju Bae Y, Willenberg A, Huppert S, Lyros O, Niebisch S, Allecke F, Kreuser N, Kratzsch J, Kaiser T, Ceglarek U, Thiery J, Gockel I. Stress biomarkers in minimally invasive and conventional colorectal resections. Acta Chir Belg 2019; 119:152-161. [PMID: 29911494 DOI: 10.1080/00015458.2018.1482698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Any surgical procedure develops a stress situation for the patient, which can modulate the individual outcome. At present, there is only limited information about stress response in colorectal resections by laparoscopic compared to conventional surgery. Therefore, our objectives were the feasibility and the investigation of stress biomarkers including copeptin and steroid hormones before, during and after colorectal surgery. METHODS Eleven patients underwent minimally invasive and ten patients conventionally open colorectal surgery. Blood samples were collected before, during and 24 h after surgery and copeptin, NT-proBNP, cortisol, cortisone, interleukin-6 and glucose were analyzed. RESULTS Both, minimally invasive and conventional-open colorectal surgery caused a fast but heterogeneous response of stress biomarkers. However, the postoperative decrease of cortisol, cortisone and glucose differed between both groups. The stress biomarkers decreased faster down to baseline after minimally invasive surgery, while in open surgery cortisol, cortisone and glucose did not return to baseline within 24 h after operation. CONCLUSIONS We show in this feasibility study for the first time an increase of copeptin in combination with glucocorticoids as stress biomarkers by open surgery compared to minimally invasive procedures in patients undergoing colorectal surgery. Exceeding an individual threshold of 'stress burden' may have unfavorable effects on the long-time clinical outcome.
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Affiliation(s)
- Jeffrey Netto
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Boris Jansen-Winkeln
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - René Thieme
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Jan Eckardt
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Yoon Ju Bae
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Anja Willenberg
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Sabine Huppert
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Orestes Lyros
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Stefan Niebisch
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Friederike Allecke
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Nicole Kreuser
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
| | - Jürgen Kratzsch
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Medical Center Leipzig, Leipzig, Germany
| | - Ines Gockel
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
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Schmidt J, Krohn S, Buenger L, Zeller K, Schneider H, Treuheit M, Kaiser T, Ziebolz D, Berg T, Haak R. Molecular characterization of intact cell-derived and cell-free bacterial DNA from carious dentine samples. J Microbiol Methods 2019; 158:33-43. [DOI: 10.1016/j.mimet.2019.01.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/17/2019] [Accepted: 01/18/2019] [Indexed: 01/22/2023]
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Weidhase L, Wellhöfer D, Schulze G, Kaiser T, Drogies T, Wurst U, Petros S. Is Interleukin-6 a better predictor of successful antibiotic therapy than procalcitonin and C-reactive protein? A single center study in critically ill adults. BMC Infect Dis 2019; 19:150. [PMID: 30760225 PMCID: PMC6375140 DOI: 10.1186/s12879-019-3800-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 02/08/2019] [Indexed: 12/29/2022] Open
Abstract
Background The aim of this study was to evaluate whether Interleukin-6 (IL-6) could be a faster indicator of treatment success in adults with severe sepsis and septic shock compared to procalcitonin (PCT) and C-reactive protein (CRP). Methods Data from adult patients with severe sepsis and septic shock managed at the medical intensive care unit (ICU) of the University Hospital Leipzig between September 2009 and January 2012 were analyzed retrospectively. Values for CRP, PCT and IL-6 on admission as well as after 24 and 48–72 h were collected. Antibiotic therapy was defined as clinically successful if the patient survived ICU stay. Results A total of 328 patients with severe sepsis and septic shock with adequate data quality were included. After 48–72 h, the median IL-6 was significantly lower in survivors than in non-survivors (114.2 pg/ml vs. 746.6 pg/ml; p < 0.001), while there was no significant difference for PCT (5.6 vs. 4.9 ng/ml; p = 0.586) and CRP (158.5 mg/l vs. 172.4 mg/l; p = 0.988). Conclusions The results of this study suggest that IL-6 is better than PCT and CRP in predicting the treatment success in predominantly non-surgical sepsis in the first 48–72 h.
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Affiliation(s)
- Lorenz Weidhase
- Medical Intensive Care Unit, University Hospital of Leipzig, Liebigstraße 20, 04103, Leipzig, Germany.
| | - Daniel Wellhöfer
- Carl-von-Basedow-Klinikum Merseburg, Medical Clinic I, Weiße Mauer 52, 06217, Merseburg, Germany
| | - Gero Schulze
- Department of Internal Medicine, Helios Hospital Schkeuditz, Leipziger Straße 45, 04435, Schkeuditz, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Paul-List-Straße 13/15, 04103, Leipzig, Germany
| | - Tim Drogies
- Medical central laboratory Altenburg, Am Waldessaum 8, 04600, Altenburg, Germany
| | - Ulrike Wurst
- University Hospital of Leipzig, Center for Pediatric Research Leipzig, University Hospital for Children &Adolescents, Liebigstraße 20, 04103, Leipzig, Germany
| | - Sirak Petros
- Medical Intensive Care Unit, University Hospital of Leipzig, Liebigstraße 20, 04103, Leipzig, Germany
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Engelmann C, Schob S, Nonnenmacher I, Werlich L, Aehling N, Ullrich S, Kaiser T, Krohn S, Herber A, Sucher R, Bartels M, Surov A, Hasenclever D, Kahn T, Seehofer D, Moche M, Berg T. Loss of paraspinal muscle mass is a gender-specific consequence of cirrhosis that predicts complications and death. Aliment Pharmacol Ther 2018; 48:1271-1281. [PMID: 30417398 DOI: 10.1111/apt.15026] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/19/2018] [Accepted: 09/28/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Loss of skeletal muscle mass is a recognised complication with a prognostic impact in patients with cirrhosis. AIM To explore in a retrospective analysis which muscle compartment most reliably predicts the occurrence of cirrhosis-associated complications and if there are gender-related differences. METHODS 795 patients with cirrhosis listed for liver transplantation between 2001 and 2014 met the inclusion and exclusion criteria including an abdominal CT scan (±200). Controls were 109 patients who underwent a CT scan after polytrauma. The paraspinal muscles index (PSMI), the abdominal wall muscles index (AWMI) and its combination skeletal muscle index (SMI) were assessed at L3/L4, normalised to the height (cm2 /m2 ). RESULTS 62.0% of patients with cirrhosis had alcoholic liver disease, and 70.6% were male. As compared to controls, a reduction in PSMI and SMI but not AWMI was associated with high model of end-stage liver disease (MELD) score, high Child-Pugh class, and the presence or history of cirrhosis-associated complications in males but not females. PSMI independently predicted the occurrence of bacterial infections (HR 0.932), spontaneous bacterial peritonitis (HR 0.901), hepatic encephalopathy (HR 0.961), and hepatorenal syndrome (HR 0.946) by multivariate Cox regression analysis in a gender-independent manner. Post-transplant survival was not associated with the PSMI; neither AWMI nor SMI predicted any clinical endpoints. CONCLUSIONS This study links muscle wasting in patients with cirrhosis predominantly to males. However, the presence of a low PSMI mass is a gender-independent predictor of developing cirrhosis-associated complications and death. Scores combining the MELD with muscle parameters should be re-validated by utilizing the PSMI.
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Affiliation(s)
- Cornelius Engelmann
- Section Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany.,Institute for Liver and Digestive Health, University College London, London, UK
| | - Stefan Schob
- Department for Neuroradiology, University Hospital Leipzig, Leipzig, Germany
| | - Ines Nonnenmacher
- Section Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Luise Werlich
- Department for Neuroradiology, University Hospital Leipzig, Leipzig, Germany
| | - Niklas Aehling
- Section Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Sebastian Ullrich
- Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Sandra Krohn
- Section Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Adam Herber
- Section Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Robert Sucher
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Michael Bartels
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany.,HELIOS Park Hospital Leipzig, General-, Visceral- and Vascular Surgery, Leipzig, Germany
| | - Alexey Surov
- Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Leipzig, Germany
| | - Dirk Hasenclever
- IMISE - Institute for Medical Informatics, Statistics and Epidemiology, University Leipzig, Leipzig, Germany
| | - Thomas Kahn
- Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Michael Moche
- Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Leipzig, Germany.,Diagnostic and Interventional Radiology, Nuernberg, Germany
| | - Thomas Berg
- Section Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
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Affiliation(s)
- T Kaiser
- Institute for Quality and Efficiency in Health Care (IQWiG), Drug Assessment, Cologne, Germany.
| | - M Köhler
- Institute for Quality and Efficiency in Health Care (IQWiG), Drug Assessment, Cologne, Germany
| | - B Wieseler
- Institute for Quality and Efficiency in Health Care (IQWiG), Drug Assessment, Cologne, Germany
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Krohn S, Zeller K, Böhm S, Chatzinotas A, Harms H, Hartmann J, Heidtmann A, Herber A, Kaiser T, Treuheit M, Hoffmeister A, Berg T, Engelmann C. Molecular quantification and differentiation of Candida species in biological specimens of patients with liver cirrhosis. PLoS One 2018; 13:e0197319. [PMID: 29897895 PMCID: PMC5999271 DOI: 10.1371/journal.pone.0197319] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 04/29/2018] [Indexed: 12/26/2022] Open
Abstract
Patients with liver cirrhosis are susceptible to fungal infections. Due to low sensitivity of culture-based methods, we applied a real-time PCR assay targeting the 18S rRNA gene in combination with direct sequencing and terminal-restriction fragment length polymorphism (T-RFLP) in order to establish a novel tool to detect fungal DNA and to quantify and differentiate Candida DNA, also in polyfungal specimens. In total, 281 samples (blood n = 135, ascites n = 92, duodenal fluid n = 54) from 135 patients with liver cirrhosis and 52 samples (blood n = 26, duodenal fluid n = 26) from 26 control patients were collected prospectively. Candida DNA was quantified in all samples. Standard microbiological culture was performed for comparison. Blood and ascites samples, irrespective of the patient cohort, showed a method-independent low fungal detection rate of approximately 1%, and the Candida DNA content level did not exceed 3.0x101 copies ml-1 in any sample. In contrast, in duodenal fluid of patients with liver cirrhosis high fungal detection rates were discovered by using both PCR- and culture-based techniques (81.5% vs. 66.7%; p = 0.123) and the median level of Candida DNA was 3.8x105 copies ml-1 (2.3x102-6.3x109). In cirrhosis and controls, fungal positive culture results were confirmed by PCR in 96% and an additional amount of 44% of culture negative duodenal samples were PCR positive. Using T-RFLP analysis in duodenal samples, overall 85% of results from microbial culture were confirmed and in 75% of culture-negative but PCR-positive samples additional Candida species could be identified. In conclusion, PCR-based methods and subsequent differentiation of Candida DNA might offer a quick approach to identifying Candida species without prior cultivation.
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Affiliation(s)
- Sandra Krohn
- University Hospital Leipzig, Section of Hepatology, Clinic of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
- Helmholtz Centre for Environmental Research—UFZ, Department of Environmental Microbiology, Leipzig, Germany
- * E-mail:
| | - Katharina Zeller
- University Hospital Leipzig, Section of Hepatology, Clinic of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Stephan Böhm
- Ludwig Maximilians-University, Max von Pettenkofer-Institute for Hygiene and Clinical Microbiology, Munich, Germany
| | - Antonis Chatzinotas
- Helmholtz Centre for Environmental Research—UFZ, Department of Environmental Microbiology, Leipzig, Germany
| | - Hauke Harms
- Helmholtz Centre for Environmental Research—UFZ, Department of Environmental Microbiology, Leipzig, Germany
| | - Jan Hartmann
- Department of Gastroenterology and Hepatology, Hospital and Outpatient Clinic for Internal Medicine A, Ernst Moritz Arndt University of Greifswald, Greifswald, Germany
| | - Anett Heidtmann
- Helmholtz Centre for Environmental Research—UFZ, Department of Environmental Microbiology, Leipzig, Germany
| | - Adam Herber
- University Hospital Leipzig, Section of Hepatology, Clinic of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Maud Treuheit
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Albrecht Hoffmeister
- Interdisciplinary Endoscopy Unit, Clinic of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- University Hospital Leipzig, Section of Hepatology, Clinic of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Cornelius Engelmann
- University Hospital Leipzig, Section of Hepatology, Clinic of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
- University College London, Institute for Liver and Digestive Health, Royal Free Campus, London, United Kingdom
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Remmler J, Schneider C, Treuner-Kaueroff T, Bartels M, Seehofer D, Scholz M, Berg T, Kaiser T. Increased Level of Interleukin 6 Associates With Increased 90-Day and 1-Year Mortality in Patients With End-Stage Liver Disease. Clin Gastroenterol Hepatol 2018; 16:730-737. [PMID: 28919544 DOI: 10.1016/j.cgh.2017.09.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 08/24/2017] [Accepted: 09/08/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Organ allocation for liver transplantation is based on prognosis, using the model for end-stage liver disease (MELD) or MELD including serum sodium (MELD-Na) score. These scores do not consider systemic inflammation and septic complications. Blood level of C-reactive protein (CRP), in addition to the MELD score, associates with mortality in patients with end-stage liver disease, whereas levels of interleukin 6 (IL6) have not been systematically studied. METHODS We performed a retrospective observational cohort study of 474 patients with end-stage liver disease (63.5% male; median age, 56.9 years), evaluated for liver transplantation in Germany, with at least 1 year of follow up. Data were collected on blood levels of CRP, IL6, and white blood cell count (WBC). Findings were analyzed in relation to mortality and compared with patients' MELD scores and MELD-Na scores. For survival analysis, the cohort was divided into quartiles of IL6, CRP, and WBC levels, as well as MELD scores. Log-rank test and the Cox proportional hazards regression model were used to compare the groups, and area under the receiver operating characteristic (AUROC) values were calculated. RESULTS Blood levels of IL6 and MELD scores associated with mortality: none of the patients with levels of IL6 below the first quartile (below 5.3 pg/mL) died within 1 year. In contrast, 67.7% of the patients in the highest quartile of IL6 level (37.0 pg/mL or more) died within 1 year. MELD score also correlated with mortality: among patients with MELD scores below 8.7, 0.9% died within 1 year, whereas in patients with MELD scores of 18.0 or more, 67.4% died within 1 year. The predictive value of level of IL6 (AUROC, 0.940) was higher than level of CRP (AUROC, 0.866) (P = .009) or WBC (AUROC, 0.773) (P < .001) for 90-day mortality. MELD scores associated with 90-day mortality (AUROC, 0.933) (P = .756) as did MELD-Na score (AUROC, 0.946) (P = .771). Level of IL6 associated with 1-year mortality (AUROC, 0.916) to a greater extent than liver synthesis or detoxification markers international normalized ratio (AUROC, 0.839) (P = .007) or bilirubin (AUROC 0.846) (P = .007). Level of IL6 was an independent, significant risk factor for mortality after adjustment for MELD score, MELD-Na score, level of CRP, or WBC. CONCLUSIONS In a retrospective analysis, we found high blood levels of IL6 to associate with 90-day and 1-year mortality in patients with end-stage liver disease; its predictive value was comparable to that of MELD or MELD-Na score, and was higher than that of level of CRP or WBC. Further studies should be performed to confirm the results in different cohorts.
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Affiliation(s)
- Johannes Remmler
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Christoph Schneider
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Theresa Treuner-Kaueroff
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Michael Bartels
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Markus Scholz
- Institute for Medical Informatics, Statistics and Epidemiology, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany.
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Berg T, Seehofer D, Kaiser T. Reply. Clin Gastroenterol Hepatol 2018; 16:783-784. [PMID: 29678239 DOI: 10.1016/j.cgh.2018.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 02/07/2023]
Affiliation(s)
- Thomas Berg
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Germany
| | - Daniel Seehofer
- Department of Visceral, Transplant, Thoracic and Vascular, Surgery, University Hospital Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Germany
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Abstract
BACKGROUND Increased serum myoglobin levels following bariatric surgery can predict rhabdomyolysis, a severe postoperative complication, which can induce acute kidney injury (AKI). The aim of this study is to evaluate clinical factors to predict increased postoperative serum myoglobin levels following bariatric surgery. MATERIALS AND METHODS Serum myoglobin levels were studied in 281obese patients undergoing bariatric surgery in the University Hospital Leipzig, Germany between May 2012 and June 2015. A linear regression model using stepwise model selection and hence a nomogram for postoperative serum myoglobin levels after bariatric surgery with statistically significant covariates were derived and verified using bootstrap sampling. RESULTS Increased serum myoglobin levels were detected firstly 4 h directly after bariatric surgery (median 124 ng/ml, range 25-22,064 ng/ml). On multivariable analysis, age, body mass index (BMI), presence of Diabetes Mellitus (DM) type II, duration of bariatric surgery, and preoperative serum myoglobin levels were significant predictors for increased serum myoglobin levels postoperatively. Furthermore, the patients were classified according to bariatric surgery duration and BMI into groups. Patients with BMI ≥ 60 kg/m2 and operating time (OP-Time) ≥ 160 min demonstrated the highest postoperative serum myoglobin levels (32% with values ≥ 3000 ng/ml) and had significantly higher postoperative morbidity including rhabdomyolysis, AKI, and compartment syndrome. CONCLUSION We provide a clinical nomogram for prediction of serum myoglobin levels following bariatric surgery, which may improve clinicians' abilities to stratify bariatric patients in risk of developing rhabdomyolysis during the postoperative course, but requires further validation.
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Affiliation(s)
- Yusef Moulla
- Division of Bariatric Surgery, Clinic of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital, Liebigstr. 20, D-4015 Leipzig, Germany.
| | - Orestis Lyros
- Division of Bariatric Surgery, Clinic of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital, Liebigstr. 20, D-4015 Leipzig, Germany
| | | | - Thorsten Kaiser
- Laboratory Institute, University of Leipzig, Leipzig, Germany
| | - Arne Dietrich
- Division of Bariatric Surgery, Clinic of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital, Liebigstr. 20, D-4015 Leipzig, Germany
- Integrated Research and Treatment Center (IFB) Adiposity Diseases, Leipzig, Germany
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Kaiser T, Finstermeier K, Häntzsch M, Faucheux S, Kaase M, Eckmanns T, Bercker S, Kaisers UX, Lippmann N, Rodloff AC, Thiery J, Lübbert C. Stalking a lethal superbug by whole-genome sequencing and phylogenetics: Influence on unraveling a major hospital outbreak of carbapenem-resistant Klebsiella pneumoniae. Am J Infect Control 2018; 46:54-59. [PMID: 28935481 DOI: 10.1016/j.ajic.2017.07.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 07/24/2017] [Accepted: 07/24/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND From July 2010-April 2013, Leipzig University Hospital experienced the largest outbreak of a Klebsiella pneumoniae carbapenemase 2 (KPC-2)-producing Klebsiella pneumoniae (KPC-2-Kp) strain observed in Germany to date. After termination of the outbreak, we aimed to reconstruct transmission pathways by phylogenetics based on whole-genome sequencing (WGS). METHODS One hundred seventeen KPC-2-Kp isolates from 89 outbreak patients, 5 environmental KPC-2-Kp isolates, and 24 K pneumoniae strains not linked to the outbreak underwent WGS. Phylogenetic analysis was performed blinded to clinical data and based on the genomic reads. RESULTS A patient from Greece was confirmed as the source of the outbreak. Transmission pathways for 11 out of 89 patients (12.4%) were plausibly explained by descriptive epidemiology, applying strict definitions. Five of these and an additional 15 (ie, 20 out of 89 patients [22.5%]) were confirmed by phylogenetics. The rate of phylogenetically confirmed transmissions increased significantly from 8 out of 66 (12.1% for the time period before) to 12 out of 23 patients (52.2% for the time period after; P <.001) after implementation of systematic screening for KPC-2-Kp (33,623 screening investigations within 11 months). Using descriptive epidemiology, systematic screening showed no significant effect (7 out of 66 [10.6%] vs 4 out of 23 [17.4%] patients; P = .465). The phylogenetic analysis supported the assumption that a contaminated positioning pillow served as a reservoir for the persistence of KPC-2-Kp. CONCLUSIONS Effective phylogenetic identification of transmissions requires systematic microbiologic screening. Extensive screening and phylogenetic analysis based on WGS should be started as soon as possible in a bacterial outbreak situation.
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Wolf J, Haendel N, Remmler J, Kutzner CE, Kaiser T, Mothes T. Hemolysis and IgA-antibodies against tissue transglutaminase: When are antibody test results no longer reliable? J Clin Lab Anal 2017; 32:e22360. [PMID: 29168584 DOI: 10.1002/jcla.22360] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/23/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Antibodies against tissue transglutaminase (TTG) of isotype IgA (IgA-aTTG) represent reliable diagnostic markers to confirm or exclude celiac disease (CD). Hemolysis (HL) is an important pre-analytical factor. HL can be quantified as HL index (HI) correlating with the concentration of free hemoglobin. TTG is abundant in erythrocytes and released upon HL. In immunoassays, the released TTG may interfere with binding of IgA-aTTG to the coated TTG. METHODS We selected 17 HL-free sera from children with biopsy-confirmed CD: 7 with low-positive (1-5 multiples of upper limit of normal [×ULN]), 5 with intermediate (5-10 × ULN) and 5 with high IgA-aTTG (10-15 × ULN). Sera were spiked with hemolysates resulting in HIs ranging from 12.5 to 800 (12.5-800 mg/dL free hemoglobin). RESULTS IgA-aTTG values were significantly decreased (>10%) after addition of hemolysates even if HL was invisible (HI <50). This effect is diagnosis-relevant if IgA-aTTG values are measured just below the cut-offs: (i) 0.4-1 × ULN at HI ≥25 (CD not excludable) and (ii) 8.5-10 × ULN at HI ≥200 (diagnosis of CD without biopsy not possible). Antibodies against deamidated gliadin were not influenced by HL. CONCLUSIONS IgA-aTTG results in sera with HI ≥25 can yield inconclusive results. Therefore, those antibody results should be assessed only under consideration of the HI.
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Affiliation(s)
- Johannes Wolf
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | | | - Johannes Remmler
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | - Carl Elias Kutzner
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
| | - Thomas Mothes
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Medical Faculty of the University and University Hospital, Leipzig, Germany
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Levitsky J, Formica RN, Bloom RD, Charlton M, Curry M, Friedewald J, Friedman J, Goldberg D, Hall S, Ison M, Kaiser T, Klassen D, Klintmalm G, Kobashigawa J, Liapakis A, O'Conner K, Reese P, Stewart D, Terrault N, Theodoropoulos N, Trotter J, Verna E, Volk M. The American Society of Transplantation Consensus Conference on the Use of Hepatitis C Viremic Donors in Solid Organ Transplantation. Am J Transplant 2017; 17:2790-2802. [PMID: 28556422 DOI: 10.1111/ajt.14381] [Citation(s) in RCA: 236] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/12/2017] [Accepted: 05/18/2017] [Indexed: 01/25/2023]
Abstract
The availability of direct-acting antiviral agents for the treatment of hepatitis C virus (HCV) infection has resulted in a profound shift in the approach to the management of this infection. These changes have affected the practice of solid organ transplantation by altering the framework by which patients with end-stage organ disease are managed and receive organ transplants. The high level of safety and efficacy of these medications in patients with chronic HCV infection provides the opportunity to explore their use in the setting of transplanting organs from HCV-viremic patients into non-HCV-viremic recipients. Because these organs are frequently discarded and typically come from younger donors, this approach has the potential to save lives on the solid organ transplant waitlist. Therefore, an urgent need exists for prospective research protocols that study the risk versus benefit of using organs for hepatitis C-infected donors. In response to this rapidly changing practice and the need for scientific study and consensus, the American Society of Transplantation convened a meeting of experts to review current data and develop the framework for the study of using HCV viremic organs in solid organ transplantation.
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Affiliation(s)
| | | | - R D Bloom
- University of Pennsylvania, Philadelphia, PA
| | - M Charlton
- Intermountain Medical Center, Salt Lake City, UT
| | - M Curry
- Beth Israel Deaconess Medical Center, Boston, MA
| | | | - J Friedman
- Optum Population Health Solutions, Minneapolis, MN
| | - D Goldberg
- University of Pennsylvania, Philadelphia, PA
| | - S Hall
- Baylor University Medical Center, Dallas, TX
| | - M Ison
- Northwestern University, Chicago, IL
| | - T Kaiser
- University of Cincinnati, Cincinnati, OH
| | - D Klassen
- United Network of Organ Sharing, Richmond, VA
| | - G Klintmalm
- Baylor University Medical Center, Dallas, TX
| | | | | | | | - P Reese
- University of Pennsylvania, Philadelphia, PA
| | - D Stewart
- United Network of Organ Sharing, Richmond, VA
| | - N Terrault
- University of California San Francisco, San Francisco, CA
| | | | - J Trotter
- Baylor University Medical Center, Dallas, TX
| | - E Verna
- Columbia University, New York, NY
| | - M Volk
- Loma Linda University, San Diego, CA
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Kaiser T, Kinny-Köster B, Gnewuch C, Karailieva D, Kiehntopf M, Kessler A, Ritter-Sket C, Schmidt M, Brand K, Thiery J, Lichtinghagen R. Limited comparability of creatinine assays in patients with liver cirrhosis and their impact on the MELD score. Pract Lab Med 2017; 8:41-48. [PMID: 28856226 PMCID: PMC5575426 DOI: 10.1016/j.plabm.2017.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND & AIM Patients with end-stage liver disease require valid estimations of mortality for organ allocation and risk stratification. The model of end-stage liver disease (MELD) score is used for this purpose in most countries and incorporates bilirubin, International Normalized ratio, and creatinine. The aim of this study was to evaluate the comparability of creatinine results from different routine assays in the serum samples of patients with liver cirrhosis. METHODS Residual material from 60 serum samples was available from patients in different stages of liver cirrhosis. Four centers participated; each center analyzed the samples with Jaffé-based and enzymatic routine assays in parallel. In addition, an accredited calibration laboratory certified the panel of samples by an internationally accepted reference measurement procedure (RMP) based on isotope dilution mass spectrometry (ID-MS). This method served as the independent reference. RESULTS All routine methods displayed a high correlation to the RMP (r ≥0.937, p<0.001). Two enzymatic and two Jaffé-based methods provided results that were all within a ±20% range of the RMP. The other methods showed deviations >20% in up to 27% of the samples. The enzymatic methods were systematically lower, whereas the Jaffé-based methods were systematically higher (p<0.001). The resulting MELD scores differed from 0 to 4 points. CONCLUSIONS There are systematic deviations from the RMP. Jaffé-based assays gave higher results, whereas the enzymatic-based assays gave lower results compared to the results of the RMP. The comparability of results is limited and could be disadvantageous to patients listed for liver transplantation.
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Affiliation(s)
- Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany
| | - Benedict Kinny-Köster
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany
| | - Carsten Gnewuch
- Institute for Clinical Chemistry and Laboratory Medicine, Regensburg University Medical Center, Regensburg, Germany
| | - Diana Karailieva
- Institute for Clinical Chemistry and Laboratory Medicine, Jena University Hospital, Jena, Germany
| | - Michael Kiehntopf
- Institute for Clinical Chemistry and Laboratory Medicine, Jena University Hospital, Jena, Germany
| | - Anja Kessler
- Reference Institute for Bioanalytics, Bonn, Germany
| | | | | | - Korbinian Brand
- Hannover Medical University, Institute of Clinical Chemistry, Hannover Medical School, Hannover, Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany
| | - Ralf Lichtinghagen
- Hannover Medical University, Institute of Clinical Chemistry, Hannover Medical School, Hannover, Germany
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Schlegel V, Treuner-Kaueroff T, Seehofer D, Berg T, Becker S, Ceglarek U, Thiery J, Kaiser T. Low PCSK9 levels are correlated with mortality in patients with end-stage liver disease. PLoS One 2017; 12:e0181540. [PMID: 28727814 PMCID: PMC5519179 DOI: 10.1371/journal.pone.0181540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 07/03/2017] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Proprotein convertase subtilisin/kexin type 9 (PCSK9) plays a key role in the cholesterol metabolism and is synthesized by the liver. It interacts with the LDL-receptor to promote its degradation. The model of end-stage liver disease (MELD) score is a well-established tool to estimate the risk of mortality in patients with end-stage chronic liver disease. The study aims to assess the associations between PCSK9, hypocholesterinemia, liver synthesis, cholestasis, MELD score and mortality in patients with end-stage liver disease. METHODS Serum samples were obtained from 74 patients with severe liver disease. The study participants were aged between 23 and 70 y (mean: 55.8 y; 47 males [63.5%], 27 females [36.5%]). Samples were selected from those with a wide range of MELD scores (7 to 40). Patients that underwent liver transplantation (17 / 74) were censored at the time of transplantation for mortality analysis. RESULTS PCSK9 values ranged from 31.47 ng/mL to 261.64 ng/mL. The median value was 106.39 ng/ml. PCSK9 was negatively correlated with markers of liver function and cholestasis (INR, bilirubin). Over a 90-d follow-up, 15 of 57 (26,3%) patients died within the 90-d follow-up without receiving liver transplantation. Thirteen of 31 (42%) patients with PCSK9 levels below the median died compared to 2/26 (8%) patients with higher PCSK9 levels (p = 0.006). In this cohort, there were no significant correlations between PCSK9, cholesterol, its precursors and several phytosterols. CONCLUSIONS Low PCSK9 serum concentrations were associated with higher mortality in patients with end-stage liver disease. The mean PCSK9 levels in the study population were much lower than those found in normal or healthy populations. Further studies are required to acquire a more detailed understanding of the role of PCSK9 in liver-related mortality.
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Affiliation(s)
- Valentin Schlegel
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Theresa Treuner-Kaueroff
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Department of Visceral, Vascular, Thoracic, and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Susen Becker
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
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Ratsch U, Kaiser T, Stepan H, Jank A. Evaluation of bone marrow function with immature platelet fraction in normal pregnancy. Pregnancy Hypertens 2017; 10:70-73. [PMID: 29153694 DOI: 10.1016/j.preghy.2017.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 05/10/2017] [Accepted: 06/13/2017] [Indexed: 11/18/2022]
Abstract
BACKGROUND Bone marrow function in pregnancy is influencing blood cell concentration of platelets. The steady state of consumption, recovery and production of platelets is essential for coagulation and bleeding prevention. Reticulated platelets are an intermediate form of thrombocytes during thrombopoiesis representing platelet production. The immature platelet fraction (IPF) represents these platelets as percentage of all thrombocytes. Until now, there is little knowledge on IPF during pregnancy. MATERIAL AND METHODS 69 healthy pregnant women were included in this monocentric study. Serial blood samples of 27 women (study group 1) and single blood samples of 42 women (study group 2) were taken between 20 and 40weeks of gestation. IPF levels and thrombocytes were quantified by a routine clinical hematology analyzer. Both two study groups were analyzed separately. RESULTS IPF levels increased between 20 and 40weeks of gestation in both study groups. Median absolute values of IPF increased from 8.1/nl to 13.6/nl in study group 1 and remained constant in study group 2. Values in percent rose from 3.63% to 6.06% in study group 1 and from 4.9% to 6.01% in study group 2. Most values stayed below 20/nl or 7-7.5%. Highest IPF levels were measured near term. In contrast, thrombocyte counts decrease slightly during this period. CONCLUSION Bone marrow function is mirrored by IPF levels, which increase with gestational age in healthy pregnant women. Most IPF values remain below 20/nl or 7%. More studies are needed to improve understanding of thrombocyte turnover in pregnancy.
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Affiliation(s)
- Ulrike Ratsch
- Department of Obstetrics, University Hospital of Leipzig, Germany
| | - Thorsten Kaiser
- Department of Obstetrics, University Hospital of Leipzig, Germany; Institute of Clinical Chemistry and Laboratory Medicine, University Hospital of Leipzig, Germany
| | - Holger Stepan
- Department of Obstetrics, University Hospital of Leipzig, Germany
| | - Alexander Jank
- Department of Obstetrics, University Hospital of Leipzig, Germany.
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Kaiser T, Kinny-Köster B, Bartels M, Berg T, Scholz M, Engelmann C, Seehofer D, Becker S, Ceglarek U, Thiery J. Cholesterol esterification in plasma as a biomarker for liver function and prediction of mortality. BMC Gastroenterol 2017; 17:57. [PMID: 28427335 PMCID: PMC5397767 DOI: 10.1186/s12876-017-0614-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 04/13/2017] [Indexed: 12/12/2022] Open
Abstract
Background Advanced stages of liver cirrhosis lead to a dramatically increased mortality. For valid identification of these patients suitable biomarkers are essential. The most important biomarkers for liver function are bilirubin and prothrombin time expressed as International Normalized Ratio (INR). However, the influence of several anticoagulants on the prothrombin time limits its diagnostic value. Aim of this study was the evaluation of cholesterol esterification (CE) fraction (esterified cholesterol vs. total cholesterol) as an alternative biomarker for liver synthesis and mortality prediction. Under physiological conditions the CE fraction in blood is closely regulated by lecithin-cholesterol acyltransferase (LCAT) which is produced in the liver. Methods One hundred forty-two patients with liver disease clinically considered for orthotopic liver transplant for different indications were enrolled in the study. One patient was excluded because of the intake of a direct oral factor Xa inhibitor which has a strong impact on prothrombin time. Results Results of CE fraction were in good agreement with INR (R2 = 0.73; p < 0.001). In patients who died or survived within three months mean CE fraction was 56% vs. 74% (p < 0.001) and mean INR was 2.0 vs. 1.3 (p < 0.001), respectively. The predictive value of CE fraction for three-month mortality risk was higher compared to INR (p = 0.04). Results for one-year mortality were comparable. Conclusions The cholesterol esterification fraction is a valid biomarker for liver synthesis and allows reliable prediction of mortality. In contrast to INR, it is independent of anticoagulation and other analytical limitations of coagulation tests. Electronic supplementary material The online version of this article (doi:10.1186/s12876-017-0614-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Paul-List-Str. 13-15, 04103, Leipzig, Germany.
| | - Benedict Kinny-Köster
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Paul-List-Str. 13-15, 04103, Leipzig, Germany
| | - Michael Bartels
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Markus Scholz
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University Hospital Leipzig, Leipzig, Germany
| | - Cornelius Engelmann
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Susen Becker
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Paul-List-Str. 13-15, 04103, Leipzig, Germany.,LIFE - Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Paul-List-Str. 13-15, 04103, Leipzig, Germany.,LIFE - Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Paul-List-Str. 13-15, 04103, Leipzig, Germany.,LIFE - Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
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Becker S, Kinny-Köster B, Bartels M, Scholz M, Seehofer D, Berg T, Engelmann C, Thiery J, Ceglarek U, Kaiser T. Low sphingosine-1-phosphate plasma levels are predictive for increased mortality in patients with liver cirrhosis. PLoS One 2017; 12:e0174424. [PMID: 28334008 PMCID: PMC5363961 DOI: 10.1371/journal.pone.0174424] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/08/2017] [Indexed: 12/24/2022] Open
Abstract
Background & aim The association of circulating sphingosine-1-phosphate (S1P), a bioactive lipid involved in various cellular processes, and related metabolites such as sphinganine-1-phosphate (SA1P) and sphingosine (SPH) with mortality in patients with end-stage liver disease is investigated in the presented study. S1P as a bioactive lipid mediator, is involved in several cellular processes, however, in end-stage liver disease its role is not understood. Methods The study cohort consisted of 95 patients with end-stage liver disease and available information on one-year outcome. The median MELD (Model for end-stage liver disease) score was 12.41 (Range 6.43–39.63). The quantification of sphingolipids in citrated plasma specimen was performed after methanolic protein precipitation followed by hydrophilic interaction liquid chromatography and tandem mass spectrometric detection. Results S1P and SA1P displayed significant correlations with the MELD score. Patients with circulating S1P levels below the lowest tertile (110.68 ng/ml) showed the poorest one-year survival rate of only 57.1%, whereas one-year survival rate in patients with S1P plasma levels above 165.67 ng/ml was 93.8%. In a multivariate cox regression analysis including platelet counts, concentrations of hemoglobin and MELD score, S1P remained a significant predictor for three-month and one-year mortality. Conclusions Low plasma S1P concentrations are highly significantly associated with prognosis in end-stage liver disease. This association is independent of the stage of liver disease. Further studies should be performed to investigate S1P, its role in the pathophysiology of liver diseases and its potential for therapeutic interventions.
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Affiliation(s)
- Susen Becker
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnosis, University Hospital Leipzig, Leipzig, Germany
| | - Benedict Kinny-Köster
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnosis, University Hospital Leipzig, Leipzig, Germany
| | - Michael Bartels
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Markus Scholz
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- Department of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Cornelius Engelmann
- Department of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnosis, University Hospital Leipzig, Leipzig, Germany
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnosis, University Hospital Leipzig, Leipzig, Germany
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnosis, University Hospital Leipzig, Leipzig, Germany
- * E-mail:
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Kharabian Masouleh S, Herzig S, Klose L, Roggenhofer E, Tenckhoff H, Kaiser T, Thöne-Otto A, Wiese M, Berg T, Schroeter ML, Margulies DS, Villringer A. Functional connectivity alterations in patients with chronic hepatitis C virus infection: A multimodal MRI study. J Viral Hepat 2017; 24:216-225. [PMID: 27813284 DOI: 10.1111/jvh.12634] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 10/05/2016] [Indexed: 12/13/2022]
Abstract
Chronic hepatitis C virus (HCV) infection is associated with fatigue and depression. Cognitive impairments are also reported in a smaller number of HCV-positive patients. Recent studies linked HCV to low-grade inflammation in brain. Here, we test the hypothesis that chronic HCV is associated with 3T-neuroimaging-derived grey matter volume (GMV) and functional connectivity alterations in a sample of chronic HCV (1b), without severe liver disease. Regional GMV and resting-state fMRI-derived eigenvector centrality (EC) were compared between 19 HCV-positive patients and 23 healthy controls (all females, 50-69 and 52-64 years, respectively), controlling for white matter hyperintensities and age. Standard tests were used to assess fatigue, depression and cognitive performance. Also, liver fibrosis stage and viral load were quantified among patients. In comparison with controls, HCV-positive patients had higher scores in fatigue and depression, and worse alertness scores. The groups performed similarly in other cognitive domains. We report higher EC in a cluster in the right anterior superior parietal lobule in patients, while no differences are found in GMV. Post hoc functional connectivity analysis showed increased connectivity of this cluster with primary and secondary somatosensory cortex, and temporal and occipital lobes in patients. Higher mean EC in the superior parietal cluster, adjusted for mean framewise displacement, was associated with better memory and attention performance, but not with fatigue, depression, viral load or level of liver fibrosis, among patients. These results suggest a compensatory mechanism in chronic hepatitis C and explain equivocal results in the literature about cognitive deficits in infected persons. Further studies should define the relation of these connectivity changes to the brain's inflammatory activity.
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Affiliation(s)
- S Kharabian Masouleh
- Department of Neurology, Max Planck Institute for Cognitive and Brain Sciences, Leipzig, Germany
| | - S Herzig
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
| | - L Klose
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
| | - E Roggenhofer
- Department of Neurology, Max Planck Institute for Cognitive and Brain Sciences, Leipzig, Germany.,LREN, Department for Clinical Neurosciences, CHUV, University of Lausanne, Lausanne, Switzerland
| | - H Tenckhoff
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital, Leipzig, Germany
| | - T Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - A Thöne-Otto
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
| | - M Wiese
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital, Leipzig, Germany
| | - T Berg
- Section of Hepatology, Department of Gastroenterology and Rheumatology, University Hospital, Leipzig, Germany
| | - M L Schroeter
- Department of Neurology, Max Planck Institute for Cognitive and Brain Sciences, Leipzig, Germany.,Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
| | - D S Margulies
- Max Planck Research Group for Neuroanatomy and Connectivity, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - A Villringer
- Department of Neurology, Max Planck Institute for Cognitive and Brain Sciences, Leipzig, Germany.,Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
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Kinny-Köster B, Bartels M, Becker S, Scholz M, Thiery J, Ceglarek U, Kaiser T. Plasma Amino Acid Concentrations Predict Mortality in Patients with End-Stage Liver Disease. PLoS One 2016; 11:e0159205. [PMID: 27410482 PMCID: PMC4943589 DOI: 10.1371/journal.pone.0159205] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 06/28/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The liver plays a key role in amino acid metabolism. In former studies, a ratio between branched-chain and aromatic amino acids (Fischer's ratio) revealed associations with hepatic encephalopathy. Furthermore, low concentrations of branched-chain amino acids were linked to sarcopenia in literature. Encephalopathy and sarcopenia are known to dramatically worsen the prognosis. Aim of this study was to investigate a complex panel of plasma amino acids in the context of mortality in patients with end-stage liver disease. METHODS 166 patients evaluated for orthotopic liver transplantation were included. 19 amino acids were measured from citrated plasma samples using mass spectrometry. We performed survival analysis for plasma amino acid constellations and examined the relationship to established mortality predictors. RESULTS 33/166 (19.9%) patients died during follow-up. Lower values of valine (p<0.001), Fischer's ratio (p<0.001) and valine to phenylalanine ratio (p<0.001) and higher values of phenylalanine (p<0.05) and tyrosine (p<0.05) were significantly associated with mortality. When divided in three groups, the tertiles discriminated cumulative survival for valine (p = 0.016), phenylalanine (p = 0.024) and in particular for valine to phenylalanine ratio (p = 0.003) and Fischer's ratio (p = 0.005). Parameters were also significantly correlated with MELD and MELD-Na score. CONCLUSIONS Amino acids in plasma are valuable biomarkers to determine increased risk of mortality in patients with end-stage liver disease. In particular, valine concentrations and constellations composed of branched-chain and aromatic amino acids were strongly associated with prognosis. Due to their pathophysiological importance, the identified amino acids could be used to examine individual dietary recommendations to serve as potential therapeutic targets.
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Affiliation(s)
- Benedict Kinny-Köster
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Michael Bartels
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Susen Becker
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Markus Scholz
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
| | - Joachim Thiery
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
- LIFE – Leipzig Research Center for Civilization Diseases, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
- * E-mail:
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50
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Weise D, Tiepolt S, Awissus C, Hoffmann KT, Lobsien D, Kaiser T, Barthel H, Sabri O, Gertz HJ. Critical Comparison of Different Biomarkers for Alzheimer's Disease in a Clinical Setting. J Alzheimers Dis 2016; 48:425-32. [PMID: 26402006 DOI: 10.3233/jad-150229] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Biomarkers of neuronal injury and amyloid pathology play a pivotal role in the diagnosis of Alzheimer's disease (AD). The degree of AD biomarker congruence is still unclear in clinical practice. OBJECTIVE Diagnosis of AD with regard to the congruence of the clinical diagnosis and different biomarkers. METHODS In this prospective cross-sectional observational study, 54 patients with mild cognitive impairment or dementia due to AD or not due to AD were investigated. Biomarkers of neuronal injury were medial temporal lobe atrophy (MTA) on magnetic resonance imaging (MRI) and tau concentration in the cerebrospinal fluid (CSF). CSF Aβ(1-42) and amyloid-targeting positron emission tomography (PET) were considered as biomarkers of amyloid pathology. RESULTS Forty cases were diagnosed as AD and 14 cases were diagnosed as non-AD based on clinical and routine MRI assessment. AD cases had higher MTA scores, higher levels of CSF tau and lower levels of CSF Aβ(1- 42), and higher amyloid load on PET compared to the non-AD group. In the AD group, completely consistently pathological biomarkers were found in 32.5% , non-pathological in 5% . In 62.5% the findings were inconsistent. Congruence of biomarkers was 67.5% for neuronal injury and for amyloid dysfunction, respectively. In two patients, clinical diagnosis switched to non-AD due to completely consistent non-pathological biomarker findings. The criteria of the international working group were met in 75.0% . CONCLUSION Surprisingly, the number of completely congruent biomarkers was relatively low. Interpretation of AD biomarkers is complicated by multiple biomarker constellations. However, the level of biomarker consistency required to reliably diagnose AD remains uncertain.
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Affiliation(s)
- David Weise
- Department of Psychiatry, University of Leipzig, Leipzig, Germany.,Department of Neurology, University of Leipzig, Leipzig, Germany
| | - Solveig Tiepolt
- Department of Nuclear Medicine, University of Leipzig, Leipzig, Germany
| | - Carolin Awissus
- Department of Psychiatry, University of Leipzig, Leipzig, Germany
| | | | - Donald Lobsien
- Department of Neuroradiology, University of Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Henryk Barthel
- Department of Nuclear Medicine, University of Leipzig, Leipzig, Germany
| | - Osama Sabri
- Department of Nuclear Medicine, University of Leipzig, Leipzig, Germany
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