1,032 results match your criteria: "Institute of Medical and Chemical Laboratory Diagnostics[Affiliation]"

Osteocalcin, in its non-carboxylated form, has a positive effect on glucose metabolism. Additionally, osteocalcin levels are related to body composition, especially muscle mass. The relation to the distribution of different adipose tissue types, such as subcutaneous, intermuscular, and visceral adipose tissue, is unclear.

View Article and Find Full Text PDF

Background And Aims: Assessment of comprehensive lipoprotein subclass profiles in adolescents and their relation to vascular disease may enhance our understanding of the development of dyslipidemia in early life and inform early vascular prevention.

Methods: Nuclear magnetic resonance was used to measure lipoprotein profiles, including lipids (cholesterol, free cholesterol, triglycerides, phospholipids) and apolipoproteins (apoB-100, apoA1, apoA2) of 17 lipoprotein subclasses (from least dense to densest: VLDL-1 to -6, IDL, LDL-1 to -6, HDL-1 to -4) in n = 1776 14- to 19-year olds (56.6% female) and n = 3027 25- to 85-year olds (51.

View Article and Find Full Text PDF

Background: Little is known about the real-time cause-effect relations between IL-6 concentrations and SLE symptoms.

Methods: A 52-year-old woman with mild SLE activity collected her entire urine for the determination of IL-6/creatinine and protein/creatinine levels (ELISA, HPLC) for a period of 56 days in 12 h intervals (total: 112 measurements). Additionally, she answered questionnaires (VAS) on oral ulceration, facial rash, joint pain, fatigue and tiredness and measured her temperature orally twice a day.

View Article and Find Full Text PDF

Increased Kynurenine Indicates a Fatal Course of COVID-19.

Antioxidants (Basel)

December 2021

Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria.

: An inefficient immune response accompanied by an overwhelming inflammatory reaction is involved in severe courses of COVID-19. Kynurenine (KYN) has important immune-modulatory functions and may contribute to a failure in controlling SARS-CoV-2. The present study aims to explore biomarkers that hint at a fatal outcome of COVID-19 early on.

View Article and Find Full Text PDF

Sex-Specific Association of Serum Anti-Oxidative Capacity and Leukocyte Telomere Length.

Antioxidants (Basel)

November 2021

Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University Graz, 8036 Graz, Austria.

Article Synopsis
  • Telomeres play a vital role in maintaining genetic stability, and shorter telomeres are linked to heightened risks of diseases like cancer and heart issues.
  • The study measured the serum leukocyte telomere length (LTL), total antioxidant capacity (TAC), and lipid levels of 180 healthy athletes, finding a significant positive correlation between LTL and TAC in males, but not in females.
  • These initial findings suggest further research is necessary to explore how oxidative stress impacts telomere length and potential differences between sexes.
View Article and Find Full Text PDF

Assessment of tryptophan and kynurenine as prognostic markers in patients with SARS-CoV-2.

Clin Chim Acta

January 2022

Institute of Clinical Chemistry and Laboratory Medicine, General Hospital Hochsteiermark, Vordernberger Straße 42, 8700 Leoben, Austria; Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Auenbruggerplatz 15, 8036 Graz, Austria.

Background: Immune dysregulation and inflammation in patients with SARS-CoV-2 is associated with a poor clinical outcome. We investigated the value of the inflammatory markers tryptophan and kynurenine in predicting the survival outcome of patients with SARS-CoV-2.

Methods: The study included 252 inpatients with a SARS-CoV-2 infection hospitalized between August 2020 and April 2021.

View Article and Find Full Text PDF

Increased blood lipid levels are heritable risk factors of cardiovascular disease with varied prevalence worldwide owing to different dietary patterns and medication use. Despite advances in prevention and treatment, in particular through reducing low-density lipoprotein cholesterol levels, heart disease remains the leading cause of death worldwide. Genome-wideassociation studies (GWAS) of blood lipid levels have led to important biological and clinical insights, as well as new drug targets, for cardiovascular disease.

View Article and Find Full Text PDF
Article Synopsis
  • * A large study investigated blood-based DNA methylation patterns in relation to kidney function and found 69 DNA sites linked to estimated glomerular filtration rate and 7 to urinary albumin-to-creatinine ratio, pointing to potential genetic markers for CKD.
  • * Further validation in kidney tissue highlighted specific genes associated with kidney function and suggested that certain DNA methylation changes could have causal effects, implicating pathways in blood cell migration and immune response related to kidney health.
View Article and Find Full Text PDF
Article Synopsis
  • * The study identified 100 significant CpG sites that account for 11.6% of serum urate variance, particularly noting five CpGs associated with SLC2A9, a major gene influencing serum urate levels.
  • * Additionally, some of these CpGs also appear to mediate effects of genetic variants related to serum urate and are linked to metabolic syndrome, suggesting a potential blood DNA methylation signature for assessing cardiometabolic risk factors.
View Article and Find Full Text PDF

Introduction: Vascular access is required for hemodialysis treatment. An effect of activated protein C resistance on access thrombosis rates has not yet been investigated. The aim of this study is to determine whether an activated protein C resistance is correlated with the patency of polytetrafluoroethylene arteriovenous grafts.

View Article and Find Full Text PDF

Hypercortisolism in patients with cholestasis is associated with disease severity.

BMC Gastroenterol

December 2021

Division of Gastroenterology and Hepatology, Department of Internal Medicine, Medical University of Graz, University Hospital Graz, Graz, Austria.

Background: Cholestasis might lead to an impairment of adrenal function as suggested by in vitro and in vivo data as well as by clinical findings. Bile acid and adrenal steroid metabolism not only share the receptors farnesoid X receptor (FXR) and the G protein-coupled bile acid receptor 1 (TGR5), but supraphysiological bile acid levels were found to stimulate steroidogenesis independent of FXR and TGR5. Our previous experimental findings revealed that mice fed bile acids or subjected to common bile duct ligation develop hypercortisolemia.

View Article and Find Full Text PDF

Purpose: Retinal vein occlusion (RVO) risk factors largely coincide with cardiovascular risk factors. Endothelin-1 (ET-1), the most potent vasoconstrictor with proinflammatory properties, is a known cardiovascular risk factor. In this study, we explore the role of serum ET-1 as a potential risk factor for RVO.

View Article and Find Full Text PDF

Evaluation of five widely used serologic assays for antibodies to SARS-CoV-2.

Diagn Microbiol Infect Dis

February 2022

SYNLAB Academy, Mannheim, Germany; Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz; Medical Clinic V, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. Electronic address:

Reliable diagnostic technologies are pivotal to the fight against COVID-19. While real-time reverse transcription-polymerase chain reaction (rRT-PCR) remains the gold standard, commercial assays for antibodies against (SARS-CoV-2) have emerged. We sought to examine 5 widely used commercial methods.

View Article and Find Full Text PDF

Obesity and metabolic syndrome (MetS) are associated with hypoadiponectinemia. On the contrary, studies revealed correlations between the amount of subcutaneous adipose tissue (SAT) and higher serum adiponectin levels. Furthermore, independent association of intermuscular adipose tissue (IMAT) deposit in the thigh with cardiometabolic risk factors (including total blood cholesterol, low-density lipoprotein (LDL), and triglycerides), and decreased insulin sensitivity, as MetS components, are sufficiently described.

View Article and Find Full Text PDF

Romosozumab is a newly available treatment for osteoporosis acting by sclerostin inhibition. Its cardiovascular safety has been questioned after finding excess cardiovascular disease (CVD)-related events in a pivotal phase 3 trial. Previous studies of relationships between circulating sclerostin levels and CVD and associated risk factors have yielded conflicting findings, likely reflecting small numbers and selected patient groups.

View Article and Find Full Text PDF

Objectives: In-house developed liquid-chromatography mass spectrometry (LC-MS/MS) methods are used more and more frequently for the simultaneous quantification of vitamin D metabolites. Among these, 24,25-dihydroxyvitamin D3 (24,25(OH)D) is of clinical interest. This study assessed the agreement of this metabolite in two validated in-house LC-MS/MS methods.

View Article and Find Full Text PDF

Rising data suggest that COVID-19 affects vascular endothelium while the underlying mechanisms promoting COVID-19-associated endothelial dysfunction and inflammatory vasculopathy are largely unknown. The aim was to evaluate the contribution of COVID-19 to persisting vascular injury and to identify parameters linked to COVID-19-associated endothelial dysfunction and inflammatory vasculopathy. In a cross-sectional design, flow-mediated dilation (FMD), nitroglycerine-related dilation (NMD), pulse-wave velocity (PWV), augmentation index, intima-media thickness (IMT), compounds of the arginine and kynurenine metabolism, homocysteine, von Willebrand factor (vWF), endothelial microparticles (EMP), antiendothelial cell antibodies, inflammatory, and immunological parameters, as well as nailfold capillary morphology were measured in post-COVID-19 patients, patients with atherosclerotic cardiovascular diseases (ASCVD) and healthy controls without prior or recent SARS-CoV-2 infection.

View Article and Find Full Text PDF

Understanding immune reactivity against SARS-CoV-2 is essential for coping with the COVID-19 pandemic. Herein, we discuss experiences and open questions about the complex immune responses to SARS-CoV-2. Some people react excellently without experiencing any clinical symptoms, they do not get sick, and they do not pass the virus on to anyone else ("sterilizing" immunity).

View Article and Find Full Text PDF

Telomeres and Age-Related Diseases.

Biomedicines

September 2021

Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria.

Telomeres are at the non-coding ends of linear chromosomes. Through a complex 3-dimensional structure, they protect the coding DNA and ensure appropriate separation of chromosomes. Aging is characterized by a progressive shortening of telomeres, which compromises their structure and function.

View Article and Find Full Text PDF

Diagnosis rates of familial hypercholesterolemia (FH) remain low. We implemented FH ALERT to assess whether alerting physicians for the possibility of FH impacted additional diagnostic activity. The study was conducted from SYNLAB laboratory Weiden (Bavaria).

View Article and Find Full Text PDF

Background And Aims: Animal and cell models indicated that vitamin D modulates inflammatory activity, which is considered relevant in the pathogenesis of arterial hypertension and cardiovascular diseases. We therefore aimed to investigate the effect of vitamin D supplementation on systemic markers of inflammation in a cohort of hypertensive patients.

Methods And Results: The Styrian Vitamin D Hypertension Trial is a single-centre, double-blind, placebo-controlled study conducted from 2011 to 2014 in Austria.

View Article and Find Full Text PDF

Meta-GWAS of PCSK9 levels detects two novel loci at APOB and TM6SF2.

Hum Mol Genet

March 2022

Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, Leipzig, Germany.

Article Synopsis
  • PCSK9 is important in lipid metabolism as it reduces LDL receptors, influencing cholesterol levels, and this study aimed to uncover new genetic factors affecting PCSK9 levels and their connection to coronary artery disease (CAD) risk.!* -
  • A genome-wide analysis of over 12,000 European samples and 300 African Americans found three new genetic loci linked to PCSK9, with significant variants for both populations and a heritability estimate around 12.6% among untreated patients.!* -
  • The research indicates that while PCSK9 significantly affects LDL cholesterol levels, which then contributes to CAD risk (67% mediated by LDL-C), it also has an independent effect on CAD itself.*
View Article and Find Full Text PDF
Article Synopsis
  • - The study investigated the levels of two vitamin D metabolites, 25-hydroxy vitamin D3 and 24,25-dihydroxy vitamin D, in both serum and cerebrospinal fluid (CSF) to understand their transport across the brain-CSF barrier (BCB) in different individuals.
  • - Findings showed that CSF concentrations of these metabolites were a small percentage of serum levels and that lower serum vitamin D correlated with better transport efficiency across the BCB.
  • - In patients with BCB dysfunction, the study found higher concentrations of vitamin D metabolites in CSF, suggesting that impaired BCB may lead to increased passive diffusion of these substances into the fluid.
View Article and Find Full Text PDF