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  1. Article ; Online: Severe symptomatic hyponatremia due to cerebral salt wasting syndrome in a patient with traumatic head injury and Dandy-Walker malformation of the brain.

    Liangos, Orfeas / Madias, Nicolaos E

    Clinical nephrology. Case studies

    2021  Volume 9, Page(s) 4–10

    Abstract: Cerebral salt wasting (CSW) is an uncommon cause of hyponatremia characterized by extracellular volume depletion, high urine sodium concentration and osmolality, and low serum uric acid concentration in association with central nervous system (CNS) ... ...

    Abstract Cerebral salt wasting (CSW) is an uncommon cause of hyponatremia characterized by extracellular volume depletion, high urine sodium concentration and osmolality, and low serum uric acid concentration in association with central nervous system (CNS) disease. Distinguishing CSW from the syndrome of inappropriate secretion of antidiuretic hormone (SIADH), a much more common form of hyponatremia in this setting, can be challenging because both present with identical laboratory features. However, treatment of CSW and SIADH differs, making a correct diagnosis important. Here we present a case of CSW in a 75-year-old man in whom severe hyponatremia and volume depletion were discovered in the setting of traumatic head injury and Dandy-Walker malformation of the brain, a rare congenital brain malformation. Treatment with intravenous normal saline and later oral salt supplementation and fludrocortisone was successful.
    Language English
    Publishing date 2021-02-19
    Publishing country Germany
    Document type Case Reports
    ISSN 2196-5293
    ISSN (online) 2196-5293
    DOI 10.5414/CNCS110146
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Hospital-acquired acute kidney injury: a proposed patient safety indicator.

    Liangos, Orfeas / Jaber, Bertrand L

    Hospital practice (1995)

    2021  Volume 49, Issue 4, Page(s) 252–254

    Abstract: Patient safety, which includes adverse event reporting and routine collection of outcome measures, has become an increasingly important aspect of inpatient care worldwide. In the United States, the National Quality Forum leads the effort in developing ... ...

    Abstract Patient safety, which includes adverse event reporting and routine collection of outcome measures, has become an increasingly important aspect of inpatient care worldwide. In the United States, the National Quality Forum leads the effort in developing such measures for use in payment and public reporting programs. However, choosing and prioritizing events to serve as patient safety indicators is difficult in a dynamically changing and complex healthcare environment. In this perspective, we propose that hospital-acquired acute kidney injury (HA-AKI), for example, contrast-induced and postoperative AKI, should be added to existing, more traditional measures, such as surgical site infections and patient falls. The article highlights the significance of HA-AKI as a common complication resulting from a multitude of diagnostic and therapeutic procedures, how it lends itself well to measuring patient safety, and how reporting of this complication can contribute to further improvement of patient safety and overall quality of care.
    MeSH term(s) Acute Kidney Injury/epidemiology ; Acute Kidney Injury/prevention & control ; Clinical Protocols ; Contrast Media/adverse effects ; Evaluation Studies as Topic ; Humans ; Iatrogenic Disease ; Patient Safety/standards ; Postoperative Complications/epidemiology ; Quality Indicators, Health Care/standards ; Risk Factors ; United States
    Chemical Substances Contrast Media
    Language English
    Publishing date 2021-06-14
    Publishing country England
    Document type Editorial
    ZDB-ID 2570453-9
    ISSN 2377-1003 ; 2154-8331 ; 8750-2836
    ISSN (online) 2377-1003
    ISSN 2154-8331 ; 8750-2836
    DOI 10.1080/21548331.2021.1935262
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Thesis: Autoradiographische Untersuchung zur pränantalen Entwicklung des Serotonintransporters im ZNS der Maus

    Liangos, Orfeas

    1996  

    Author's details vorgelegt von Orfeas Liangos
    Language German
    Size 50 S. : Ill.
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Berlin, Freie Univ., Diss., 1996
    HBZ-ID HT007485485
    Database Catalogue ZB MED Medicine, Health

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  4. Article ; Online: Bone Biopsy Results in Chronic Kidney Disease: a Single-Center Experience.

    Liangos, Orfeas / Kirchhoff, Silvia / Buchholz, Joachim / Ketteler, Markus

    Kidney & blood pressure research

    2018  Volume 43, Issue 4, Page(s) 1222–1230

    Abstract: Background/aims: Although bone histology remains the diagnostic standard in renal osteodystrophy (ROD), biomarkers are used more commonly. Data comparing bone biopsy results and biomarkers of bone metabolism remain sparse.: Methods: This is a single- ... ...

    Abstract Background/aims: Although bone histology remains the diagnostic standard in renal osteodystrophy (ROD), biomarkers are used more commonly. Data comparing bone biopsy results and biomarkers of bone metabolism remain sparse.
    Methods: This is a single-center retrospective analysis of bone biopsy results (105) stratified by renal function, compared with intact parathyroid hormone (iPTH), bone-specific alkaline phosphatase (BAP) and other biomarkers. We tested associations with high-turnover ostitis fibrosa (OF) and mixed uremic osteodystrophy (MUO), i.e. classes I and III according to Delling's classification.
    Results: 37% of patients had CKD stage 3-5 not on dialysis (CKD NOD) and 50% CKD stage 5 requiring haemodialysis (CKD 5D). iPTH was significantly higher in CKD 5D with high-turnover ROD, 26 (18) versus 8 (9) pmol/l (p< 0.001). BAP showed no association. In CKD NOD, high-turnover ROD was associated with elevated iPTH, 32 (44) versus 8 (11) pmol/l (p=0.001), and BAP, 39 (32) versus 16 (7) U/l (p=0.01). iPTH achieved receiver operator characteristic (ROC) areas under the curve (AUC) of 0.83 (P=0.003) and 0.91 (P=0.019) for high-turnover ROD among CKD 5D and CKD NOD patients, respectively. An iPTH cutoff of 12.8 (CKD 5D) and 13.5 pmol/l (CKD NOD) reached sensitivities and specificities of 0.83, 0.91 and 1.00, 0.91, respectively. In CKD NOD, BAP achieved an AUC of 0.93 (P=0.013) and with a cutoff at 19.8 U/l a sensitivity and specificity of 1.00, 0.91, respectively.
    Conclusion: In CKD 5D patients, high-turnover ROD was associated with elevated iPTH at a low cutoff but not with BAP. The same diagnosis in CKD NOD was associated both with iPTH and BAP.
    MeSH term(s) Aged ; Aged, 80 and over ; Alkaline Phosphatase/blood ; Biopsy ; Bone and Bones/pathology ; Chronic Kidney Disease-Mineral and Bone Disorder/blood ; Female ; Humans ; Male ; Middle Aged ; Parathyroid Hormone/blood ; Renal Dialysis ; Renal Insufficiency, Chronic/complications ; Renal Insufficiency, Chronic/therapy ; Retrospective Studies
    Chemical Substances Parathyroid Hormone ; Alkaline Phosphatase (EC 3.1.3.1)
    Language English
    Publishing date 2018-08-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1326018-2
    ISSN 1423-0143 ; 1420-4096
    ISSN (online) 1423-0143
    ISSN 1420-4096
    DOI 10.1159/000492249
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Treating hyperphosphatemia - current and advancing drugs.

    Ketteler, Markus / Liangos, Orfeas / Biggar, Patrick H

    Expert opinion on pharmacotherapy

    2016  Volume 17, Issue 14, Page(s) 1873–1879

    Abstract: Introduction: Hyperphosphatemia is a hallmark of advanced chronic kidney disease (CKD) and associated with adverse outcomes. Preclinical and epidemiological studies strongly support a causal relationship between hyperphosphatemia and mortality as well ... ...

    Abstract Introduction: Hyperphosphatemia is a hallmark of advanced chronic kidney disease (CKD) and associated with adverse outcomes. Preclinical and epidemiological studies strongly support a causal relationship between hyperphosphatemia and mortality as well as cardiovascular complications, especially including vascular, valvular and soft-tissue calcifications. Thus, appropriate phosphate lowering is considered to play a major role in health and longevity of CKD patients. In this respect, phosphate binders are the most powerful therapeutic option, while dietary phosphate restriction and intensified dialysis are valuable supportive approaches.
    Areas covered: Pubmed was the primary research platform. This search focused on novel phosphate lowering compounds, including iron-containing binders and phosphate transport inhibitors, which have just become available or are in the approval process. Further, additional reports on effective strategies to counteract the adverse consequences of resistant hyperphosphatemia were also collected.
    Expert opinion: New iron-containing drugs may offer advantages, including iron supplementation, low pill burden and high efficacy. Phosphate transport inhibitors possess a high potential as add-on compounds in patients with insufficient phosphate binder therapy. One unsolved question remains at what CKD stage to start therapeutically counteracting phosphate retention.
    MeSH term(s) Chelating Agents/therapeutic use ; Humans ; Hyperphosphatemia/drug therapy ; Iron/therapeutic use ; Phosphates/metabolism ; Renal Dialysis ; Renal Insufficiency, Chronic/drug therapy
    Chemical Substances Chelating Agents ; Phosphates ; Iron (E1UOL152H7)
    Language English
    Publishing date 2016-10
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2001535-5
    ISSN 1744-7666 ; 1465-6566
    ISSN (online) 1744-7666
    ISSN 1465-6566
    DOI 10.1080/14656566.2016.1220538
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Vitamin K1 and progression of cardiovascular calcifications in hemodialysis patients: the VitaVasK randomized controlled trial.

    Saritas, Turgay / Reinartz, Sebastian / Krüger, Thilo / Ketteler, Markus / Liangos, Orfeas / Labriola, Laura / Stenvinkel, Peter / Kopp, Christoph / Westenfeld, Ralf / Evenepoel, Pieter / Siepmann, Robert / Wied, Stephanie / Hilgers, Ralf-Dieter / Schurgers, Leon / Floege, Jürgen

    Clinical kidney journal

    2022  Volume 15, Issue 12, Page(s) 2300–2311

    Abstract: Background: Cardiovascular calcifications are prevented by matrix Gla protein (MGP), a vitamin K-dependent protein. Haemodialysis patients exhibit marked vitamin K deficiency. The randomized, prospective, open-label, multicentre VitaVasK trial analysed ... ...

    Abstract Background: Cardiovascular calcifications are prevented by matrix Gla protein (MGP), a vitamin K-dependent protein. Haemodialysis patients exhibit marked vitamin K deficiency. The randomized, prospective, open-label, multicentre VitaVasK trial analysed whether vitamin K1 supplementation reduces progression of coronary artery calcifications (CACs) and thoracic aortic calcifications (TACs).
    Methods: Patients with pre-existing CACs were randomized to continue on standard care or to additionally receive 5 mg of vitamin K1 orally thrice weekly. Hierarchically ordered primary endpoints were progression of TAC and CAC in computed tomography scans at 18 months. Linear mixed effects models with repeated measures at baseline and 12 and 18 months assessed treatment effects after adjusting for study site.
    Results: Of 60 randomized patients, 20 dropped out for reasons unrelated to vitamin K1, resulting in 23 control and 17 vitamin K1 patients. The trial was stopped early due to slow recruitment. At 18 months, the average TAC progression was 56% lower in the vitamin K1 compared with the control group (p = .039). CAC significantly progressed within the control group, but not within the vitamin K1 group. Average progression at 18 months was 68% lower in the vitamin K1 compared to the control group (
    Conclusion: Vitamin K1 intervention is a potent, safe and cost-effective approach to correct vitamin K deficiency and to potentially reduce cardiovascular calcification in this high-risk population.
    Language English
    Publishing date 2022-08-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2655800-2
    ISSN 2048-8513 ; 2048-8505
    ISSN (online) 2048-8513
    ISSN 2048-8505
    DOI 10.1093/ckj/sfac184
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Bone Biopsy Results in Chronic Kidney Disease: a Single-Center Experience

    Liangos, Orfeas / Kirchhoff, Silvia / Buchholz, Joachim / Ketteler, Markus

    Kidney and Blood Pressure Research

    2018  Volume 43, Issue 4, Page(s) 1222–1230

    Abstract: Background/Aims: Although bone histology remains the diagnostic standard in renal osteodystrophy (ROD), biomarkers are used more commonly. Data comparing bone biopsy results and biomarkers of bone metabolism remain sparse. Methods: This is a single- ... ...

    Institution Department of Nephrology, Klinikum Coburg, Coburg, Germany
    Faculty of Medicine, University of Wuerzburg, Wuerzburg, Germany
    Professor of Medicine, University of Split Medical School, Split, Croatia
    Abstract Background/Aims: Although bone histology remains the diagnostic standard in renal osteodystrophy (ROD), biomarkers are used more commonly. Data comparing bone biopsy results and biomarkers of bone metabolism remain sparse. Methods: This is a single-center retrospective analysis of bone biopsy results (105) stratified by renal function, compared with intact parathyroid hormone (iPTH), bone-specific alkaline phosphatase (BAP) and other biomarkers. We tested associations with high-turnover ostitis fibrosa (OF) and mixed uremic osteodystrophy (MUO), i.e. classes I and III according to Delling’s classification. Results: 37% of patients had CKD stage 3-5 not on dialysis (CKD NOD) and 50% CKD stage 5 requiring haemodialysis (CKD 5D). iPTH was significantly higher in CKD 5D with high-turnover ROD, 26 (18) versus 8 (9) pmol/l (p< 0.001). BAP showed no association. In CKD NOD, high-turnover ROD was associated with elevated iPTH, 32 (44) versus 8 (11) pmol/l (p=0.001), and BAP, 39 (32) versus 16 (7) U/l (p=0.01). iPTH achieved receiver operator characteristic (ROC) areas under the curve (AUC) of 0.83 (P=0.003) and 0.91 (P=0.019) for high-turnover ROD among CKD 5D and CKD NOD patients, respectively. An iPTH cutoff of 12.8 (CKD 5D) and 13.5 pmol/l (CKD NOD) reached sensitivities and specificities of 0.83, 0.91 and 1.00, 0.91, respectively. In CKD NOD, BAP achieved an AUC of 0.93 (P=0.013) and with a cutoff at 19.8 U/l a sensitivity and specificity of 1.00, 0.91, respectively. Conclusion: In CKD 5D patients, high-turnover ROD was associated with elevated iPTH at a low cutoff but not with BAP. The same diagnosis in CKD NOD was associated both with iPTH and BAP.
    Keywords CKD-MBD ; Biomarkers ; Renal osteodystrophy ; Chronic renal failure ; Hyperparathyroidism
    Language English
    Publishing date 2018-08-02
    Publisher S. Karger AG
    Publishing place Basel, Switzerland
    Document type Article
    Note Original Paper ; This article is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
    ZDB-ID 1326018-2
    ISSN 1423-0143 ; 1420-4096
    ISSN (online) 1423-0143
    ISSN 1420-4096
    DOI 10.1159/000492249
    Database Karger publisher's database

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  8. Article: Atypical case of AL amyloidosis with urinary erythrocyte casts.

    Liangos, Orfeas / Buettner-Herold, Maike / Ketteler, Markus / Madias, Nicolaos E

    Clinical nephrology. Case studies

    2015  Volume 3, Page(s) 19–24

    Abstract: We present the case of a 73-year-old man who developed an acute, severe febrile illness with multiorgan dysfunction, featuring renal failure, nephrotic-range proteinuria, microhematuria, and a skin rash. Numerous erythrocyte casts were found on urine ... ...

    Abstract We present the case of a 73-year-old man who developed an acute, severe febrile illness with multiorgan dysfunction, featuring renal failure, nephrotic-range proteinuria, microhematuria, and a skin rash. Numerous erythrocyte casts were found on urine microscopy. Typically, the finding of urinary erythrocyte casts indicates the presence of an underlying glomerular inflammatory disease. However, on renal biopsy, only amyloid light-chain (AL) amyloidosis and tubular injury were the predominant findings with no signs of glomerular or vascular inflammation. Photomicrographs of urinary sediment as well as renal biopsy histopathology of the presented case are shown. The unusual combination of findings, is then discussed in light of the existing literature on renal amyloidosis as well as erythrocyte casts in conditions other than glomerulonephritis.
    Language English
    Publishing date 2015-09-23
    Publishing country Germany
    Document type Case Reports
    ISSN 2196-5293
    ISSN 2196-5293
    DOI 10.5414/CNCS108640
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: FGF23 antagonism: the thin line between adaptation and maladaptation in chronic kidney disease.

    Ketteler, Markus / Biggar, Patrick H / Liangos, Orfeas

    Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association

    2013  Volume 28, Issue 4, Page(s) 821–825

    Abstract: For more than 10 years, we have been convinced by overwhelming epidemiological evidence with a high biological plausibility that hyperphosphataemia imposes one of the most sustained cardiovascular and mortality risks on patients suffering from chronic ... ...

    Abstract For more than 10 years, we have been convinced by overwhelming epidemiological evidence with a high biological plausibility that hyperphosphataemia imposes one of the most sustained cardiovascular and mortality risks on patients suffering from chronic kidney disease (CKD). With the discovery of the fibroblast growth factor-23 (FGF23)/klotho axis, we not only gained a new and mechanistic understanding of phosphate handling of the body, we also felt that novel therapeutic strategies may arise counteracting the deleterious consequences of phosphate retention, dysregulation and maldistribution. Two recent experimental studies shed additional and important light on what we can expect from such new insights. Faul et al. showed us that FGF23 excess may directly induce left ventricular hypertrophy (LVH) and that FGF-receptor antagonism ameliorates CKD-induced LVH in rats. Shalhoub et al. demonstrated that FGF23 antibodies successfully ameliorated the development and progression of most features of secondary hyperparathyroidism in a rat model of CKD, however, at the expense of hyperphosphataemia, progressive vascular calcification and death. Such studies not only help to continuously improve our understanding, but also especially sharpen our perception of how thin the line may be between adaptation and maladaptation in chronic disease scenarios.
    MeSH term(s) Animals ; Cardiovascular Diseases/etiology ; Cardiovascular Diseases/metabolism ; Cardiovascular Diseases/prevention & control ; Fibroblast Growth Factors/antagonists & inhibitors ; Fibroblast Growth Factors/metabolism ; Humans ; Rats ; Renal Insufficiency, Chronic/complications
    Chemical Substances fibroblast growth factor 23 ; Fibroblast Growth Factors (62031-54-3)
    Language English
    Publishing date 2013-04
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 90594-x
    ISSN 1460-2385 ; 0931-0509
    ISSN (online) 1460-2385
    ISSN 0931-0509
    DOI 10.1093/ndt/gfs557
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Multiple organ dysfunction syndrome in children with sepsis: role of genetic factors.

    Liangos, Orfeas / Jaber, Bertrand L

    Seminars in nephrology

    2008  Volume 28, Issue 5, Page(s) 499–509

    Abstract: This review summarizes current knowledge on the impact of genetic markers on susceptibility, severity, and outcome of acute inflammatory disorders in children, with a special focus on systemic infections. A 14-year-old child with Neisseria meningitides ... ...

    Abstract This review summarizes current knowledge on the impact of genetic markers on susceptibility, severity, and outcome of acute inflammatory disorders in children, with a special focus on systemic infections. A 14-year-old child with Neisseria meningitides bacteremia, complicated by septic shock and multiple organ dysfunction, is discussed as an exemplary case, and linked to the application of genetic epidemiology and the study of common disorders in children. The current pertinent literature is comprehensively reviewed and limitations and future directions are discussed.
    MeSH term(s) Biomarkers/metabolism ; Child ; Genetic Predisposition to Disease ; Humans ; Multiple Organ Failure/etiology ; Multiple Organ Failure/genetics ; Multiple Organ Failure/metabolism ; Polymorphism, Genetic ; Prognosis ; Sepsis/complications ; Sepsis/metabolism
    Chemical Substances Biomarkers
    Language English
    Publishing date 2008-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 604652-6
    ISSN 1558-4488 ; 0270-9295
    ISSN (online) 1558-4488
    ISSN 0270-9295
    DOI 10.1016/j.semnephrol.2008.05.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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