Publications by authors named "Beatrice Ludwig-Kraus"

Article Synopsis
  • Preservation of function is crucial when surgically treating cochleovestibular schwannomas, and this study highlights successful outcomes in a specific case.
  • A 61-year-old male with a history of left-sided deafness and vertigo undergoes total tumor removal, which also includes complete cochlectomy, but his vestibular function remains intact and vertigo symptoms resolve.
  • The findings suggest that vestibular function can be preserved even after complete cochlear removal, supporting surgical approaches for transmodiolar schwannomas with limited extension.
View Article and Find Full Text PDF
Article Synopsis
  • Systemic glucocorticoids, like prednisolone and dexamethasone, are often used to treat idiopathic sudden sensorineural hearing loss (ISSNHL), but it's unclear if higher doses are more effective or riskier than lower doses.
  • In a study with 325 patients, groups were given different regimens: high-dose intravenous prednisolone, high-dose oral dexamethasone, or lower-dose oral prednisolone.
  • Results showed that while there were improvements in hearing, high-dose therapies (HD-Pred and HD-Dex) did not outperform lower-dose treatment (Pred-Control) and were associated with more adverse side effects.
View Article and Find Full Text PDF

The thromboxane A receptor (TP) has been shown to play a role in angiotensin II (Ang II)-mediated hypertension and pathological vascular remodeling. To assess the impact of vascular TP on Ang II-induced hypertension, atherogenesis, and pathological aortic alterations, i.e.

View Article and Find Full Text PDF

Nucleocapsid gene-positive, envelope gene-negative (N2+/E-) SARS-CoV-2 PCR results obtained with the Cepheid Xpert Xpress SARS-CoV-2 assay are an infrequent phenomenon. We assessed the validity of the N2+/E- cases with an indirect approach by analyzing their occurrence in relation to overall positive PCR rates and absolute number of PCR tests (24,909 samples, collected June 2021 to July 2022). Additionally, 3022 samples were analyzed with the Xpert Xpress CoV-2-plus assay in August/September 2022.

View Article and Find Full Text PDF

Vitamin D, besides its classical effect on mineral homeostasis and bone remodeling, can also modulate apoptosis. A special form of apoptosis termed eryptosis appears in erythrocytes. Eryptosis is characterized by cell shrinkage, membrane blebbing, and cell membrane phospholipid disorganization and associated with diseases such as sepsis, malaria or iron deficiency, and impaired microcirculation.

View Article and Find Full Text PDF

In order to elucidate mechanisms for severe acute respiratory syndrome coronavirus 2 vaccination success in hematological neoplasia, we, herein, provide a comprehensive characterization of the spike-specific T-cell and serological immunity induced in 130 patients in comparison with 91 healthy controls. We studied 121 distinct T-cell subpopulations and the vaccination schemes as putative response predictors. In patients with lymphoid malignancies an insufficient immunoglobulin G (IgG) response was accompanied by a healthy CD4+ T-cell function.

View Article and Find Full Text PDF
Article Synopsis
  • Systemic glucocorticosteroids are commonly used for treating idiopathic sudden sensorineural hearing loss (ISSHL), despite guidelines being based on retrospective studies rather than randomized controlled trials (RCTs).
  • This multicenter RCT aims to evaluate the effectiveness and safety of high-dose steroids compared to standard doses in 312 adult patients with unilateral ISSHL.
  • By analyzing changes in hearing and potential side effects, particularly hyperglycemia, the study seeks to fill the gap in understanding the optimal treatment strategy for ISSHL.
View Article and Find Full Text PDF

The F2-isoprostane 8-iso-PGF (also known as 15-F-isoprostane, iPF-III, 8-epi PGF, 15(S)-8-iso-PGF, or 8-Isoprostane), a thromboxane A receptor (TP) agonist, stable biomarker of oxidative stress, and risk marker of cardiovascular disease, has been proposed to aggravate atherogenesis in genetic mouse models of atherosclerotic vascular disease. Moreover, the TP plays an eminent role in the pathophysiology of endothelial dysfunction, atherogenesis, and cardiovascular disease. Yet it is unknown, how the TP expressed by vascular cells affects atherogenesis or 8-iso-PGF-related effects in mouse models of atherosclerosis.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the immune responses of patients with blood cancers receiving checkpoint-inhibitors after vaccination against SARS-CoV-2, comparing their outcomes with those of healthy controls.
  • Results showed that while initial seroconversion (antibody response) was lower in patients (68%) compared to controls (98%), there was a significant improvement by day 120 across all patient groups, particularly for those on checkpoint-inhibitors.
  • The research highlights that despite some patients showing T-cell responses, there was no clear link between antibody levels and T-cell responses, suggesting that evaluating both immune responses is important for understanding patient immunity and guiding public health vaccination strategies.
View Article and Find Full Text PDF

Background: Blood-Gas Analyzers (BGAs) are commonly used in parallel with central laboratory analyzers (CLAs). Given the often-divergent results between BGAs and CLAs this study aims to: 1. Determine whether the measurements of potassium (K), sodium (Na), glucose (Glu), lactate (Lact) and total hemoglobin (ctHb) on BGAs and CLAs are interchangeable; 2.

View Article and Find Full Text PDF

Climate change is expected to increase the frequency of extreme weather events, such as extended heat waves and droughts in the northern hemisphere. Besides affecting ecosystems worldwide, these changes in climate patterns will also affect the environmental health of human populations. While the medical community is mostly concerned with the negative impact of climate change, there might also be some beneficial effects.

View Article and Find Full Text PDF

Aims: Single measurements of higher levels of soluble tumor necrosis factor receptor I (sTNF-R1) have been shown to be associated with increased risk of mortality. However, up to date, little is known about the underlying temporal dynamics of sTNF-R1 concentrations and their relation with mortality. We aimed to characterize the effect of changes in sTNFR-1 levels on all-cause and cardiovascular mortality, independent from other established risk factors for mortality, including other inflammatory markers.

View Article and Find Full Text PDF

Introduction: The measurement of β-hydroxybutyrate (βOHB) concentrations is a corner stone of the diagnosis of diabetic ketoacidosis and other ketonic states. The aim of this study was to perform a validation of a peripheral blood βOHB assay (Randox) on a Roche cobas c502 analyser and to establish a βOHB reference range for the validated assay.

Materials And Methods: Precision, linearity and limit of detection and blank (LoD, LoB) were determined according to Clinical and Laboratory Standards Institute (CLSI) EP05-A3, EP 06-A and EP17-A2 guidelines, using commercial control material and residual patient sample pools.

View Article and Find Full Text PDF

Objectives: Characterization of an in vitro diagnostic zinc assay (LT-SYS) on a Roche cobas c502 analyzer and evaluation of the influence of pre-analytic factors on zinc concentration measurements.

Design And Methods: Imprecision, bias, linearity, limit of blank (LoB), and limit of detection (LoD) were established and method comparisons were performed based on the respective CLSI guidelines. The influence of time elapsed until analysis, the usage of a pneumatic tube delivery system (PTDS) and of special trace element sample tubes was evaluated as well.

View Article and Find Full Text PDF

Background: Laboratory quantification of IgG subclasses (IgGSc) is a well-established second-line tool for differential diagnosis of immune deficiencies. However, so far there is still no internationally approved standard available for IgGSc, and different assays are prone to produce divergent results. In this study, we evaluated the comparability and equivalence of two commercially available IgGSc assays, one being the Siemens IgGSc assay on a BN ProSpec analyzer and the other being The Binding Site (TBS) IgGSc assay on a Roche cobas c502 analyzer.

View Article and Find Full Text PDF

Objective: Validation of the LT-SYS quantitative in vitro copper assay on a Roche Cobas 8000 c502 analyzer and comparison with a BIOMED assay on a Roche Cobas Mira analyzer.

Methods: Imprecision and bias were quantified at different concentration levels (serum and plasma) over a 20-day period. Linearity was assessed covering a range from 4.

View Article and Find Full Text PDF