302 results match your criteria: "Department of Clinical Diagnostics[Affiliation]"

Purpose Of Review: The advent of checkpoint immunotherapy has dramatically changed the outcomes for patients with cancer. However, a considerable number of patients have little or no response to therapy. We review recent findings on the connection between the gut microbiota and the immune system, exploring whether this link could enhance the effectiveness of immunotherapy.

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Bioanalysis of protein-unbound prednisolone in serum using equilibrium dialysis followed by liquid chromatography-tandem mass spectrometry.

J Chromatogr B Analyt Technol Biomed Life Sci

December 2024

Department of Clinical Diagnostics, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands. Electronic address:

Introduction: High-dose systemic prednisolone is the cornerstone treatment of many autoimmune- and inflammatory diseases. Since prednisolone shows non-linear protein binding at higher serum concentrations, quantification of the unbound prednisolone concentration is important to understand prednisolone pharmacokinetics. We developed a liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay to quantify protein-unbound prednisolone in serum.

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The Impact of Physical Activity on Abdominal Aortic Aneurysm: A Scoping Review.

Ann Vasc Surg

December 2024

Department of Clinical Diagnostics, School of Health and Welfare, Jönköping University, Jönköping, Sweden.

Background: Abdominal aortic aneurysm (AAA), a condition primarily affecting older men, is often asymptomatic but becomes life-threatening if rupture occurs. While AAA risk factors such as age, gender, and smoking are well-studied, physical activity (PA) may also play a critical role in managing AAA progression, though this relationship remains understudied. This scoping review aims to synthesize current knowledge on the impact of PA on AAA, examining safety, physiological effects, and potential protective effects against AAA progression.

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The incidence of chronic enteropathies (CE), in particular food-responsive enteropathies (FRE) in dogs, is on the rise in veterinary practice. The symptoms of these digestive disorders cannot be alleviated with the use of commercial hypoallergenic feeds. The applicability of novel materials in hypoallergenic dog feeds is limited, and edible insects could pose a viable alternative.

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Complement Evasion Protects FCoV from Virus Clearance Within Prototypic FIP Lesions.

Viruses

October 2024

Section of Clinical and Comparative Neuropathology, Institute of Veterinary Pathology, Centre for Clinical Veterinary Medicine, LMU Munich, 80539 Munich, Germany.

Feline infectious peritonitis (FIP) is a fatal disease in cats caused by infection with feline coronavirus (FCoV). Despite severe inflammatory changes, defense mechanisms fail to achieve virus clearance. Some studies focused on various immune evasion mechanisms, but none of these studies elucidated the inefficacy of the complement system, which is one major player in FIP-associated immune pathogenesis.

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: Flow cytometry is a convenient tool in immunophenotyping for monitoring the status of immunological conditions and diseases. The aim of this study was to investigate the effect of isolation and cryopreservation by flow cytometric analysis on subpopulations of CD4 T helper (Th), T regulatory (Treg), CD8 T cytotoxic (Tc), CD56 NK, CD19 B and monocytes. Freshly isolated and cryopreserved peripheral blood mononuclear cells (PBMCs) were compared to fresh whole blood.

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Relationship between radiation dose and cerebral microbleed formation in dogs with intracranial tumors.

J Vet Intern Med

November 2024

Division of Radiation Oncology, Department for Small Animals, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.

Background: Cerebral microbleeds (CMBs) are a possible sequela in human brain tumor patients treated with radiation therapy (RT). No such association is reported in dogs.

Objectives: To investigate whether CMBs occur in dogs after radiotherapy, and if there is an association between number and dose, and an increase over time.

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Investigations on the Potential Role of Free-Ranging Wildlife as a Reservoir of SARS-CoV-2 in Switzerland.

Viruses

September 2024

Clinical Laboratory, Department of Clinical Diagnostics and Services, and Center for Clinical Studies, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland.

Amid the SARS-CoV-2 pandemic, concerns surfaced regarding the spread of the virus to wildlife. Switzerland lacked data concerning the exposure of free-ranging animals to SARS-CoV-2 during this period. This study aimed to investigate the potential exposure of Swiss free-ranging wildlife to SARS-CoV-2.

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The genus is represented by shrubs growing in a temperate climate that have been used for ages as traditional remedies in the treatment of digestive problems, in diabetes, renal stones or as antiseptics due to the presence of polyphenols (anthocyanins, flavonoids and tannins) in their fruits and leaves. Recent studies confirm their marked potential in the treatment of skin disorders and as skin care cosmetics. The aim of this review is to present the role of spp.

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Aging is an inevitable and irreversible biological process that gradually heightens the risks of various diseases and death. As a newly discovered endogenous gasotransmitter, hydrogen sulfide (H2S) has been identified to exert multiple beneficial impacts on the regulation of aging and age-related pathologies. This study was aimed at systematically exploring the relationship between asynchronous aging processes and H2S concentrations in various tissues of aging mice.

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Introduction: β-site amyloid precursor protein (APP) cleaving enzyme 2 (BACE2) cleaves APP which is ubiquitously expressed in a variety of cell types including cancer cells. BACE2 can process APP in several ways and appears to be involved in the pathogenesis of cancer. Our purpose was to assess the association of mRNA expression and genetic polymorphism of BACE2 in colorectal cancer (CRC) susceptibility and its association to clinicopathological factors in Swedish patients with CRC.

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Background And Aims: Preeclampsia poses a heightened risk for women, particularly in the development of hemolysis, elevated liver enzymes, and low platelets (HELLP) syndrome, leading to adverse outcomes for both mothers and newborns. The incidence of HELLP syndrome tends to be notably higher among women with preeclampsia compared with those with normotensive pregnancies. However, there is a dearth of research on the frequency of HELLP syndrome within the context of preeclampsia specifically in Ghana.

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In the past, feline infectious peritonitis (FIP) caused by feline coronavirus (FCoV) was considered fatal. Today, highly efficient drugs, such as GS-441524, can lead to complete remission. The currently recommended treatment duration in the veterinary literature is 84 days.

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Background: It is doubtful that any of the treatments proposed for feline leukaemia virus (FeLV) infection are effective, despite the entity being described 60 years ago.

Methods: Eighteen pet cats with progressive FeLV infections were recruited in Australia. One or more antiviral drugs were trialled in 16 cats, while two FeLV-infected cats were not handleable and served as untreated controls.

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Comparison of the Influence of Bisphenol A and Bisphenol S on the Enteric Nervous System of the Mouse Jejunum.

Int J Mol Sci

June 2024

Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-957 Olsztyn, Poland.

Bisphenols are dangerous endocrine disruptors that pollute the environment. Due to their chemical properties, they are globally used to produce plastics. Structural similarities to oestrogen allow bisphenols to bind to oestrogen receptors and affect internal body systems.

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Vladislav Dzerzhinsky (1881-1942).

Neurol Sci

September 2024

Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland.

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Introduction: Benzophenones (BPs) are used in various branches of industry as ultraviolet radiation filters, but they pollute the natural environment, penetrate living organisms, and disrupt endocrine balance. Knowledge of the exposure of domestic animals to these substances is extremely scant. The aim of the study was to investigate long-term exposure of companion dogs to BPs and relate this to environmental factors.

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Considerations for reporting variants in novel candidate genes identified during clinical genomic testing.

Genet Med

October 2024

Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA; Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA.

Article Synopsis
  • - The advent of exome and genome sequencing has transformed genomic testing for rare Mendelian diseases, leading to more precise genetic diagnoses but often missing novel candidate genes.
  • - Clinical laboratories face challenges in balancing efficiency, regulatory demands, and the need for genomic research participation, making it difficult to share new findings on potentially pathogenic variants.
  • - Establishing clear guidelines for identifying, sharing, and reporting novel candidate genes could significantly benefit patients, clinicians, and researchers by improving diagnosis and fostering collaboration.
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In this final part, the models of drug concentration in blood developed in Part 3 are validated on dogs. Both slow-release gastroretentive fibrous and immediate-release particulate dosage forms containing 200 mg nilotinib were tested. After administering, the fibrous dosage form expanded linearly with time in the stomach, to about 1.

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Objective And Results Description: The study objective was to investigate the potential of quantitative measures of pulmonary inflammation by [18 F]Fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) as a surrogate marker of inflammation in COPD. Patients treated with anti-inflammatory Liraglutide were compared to placebo and correlated with inflammatory markers. 27 COPD-patients (14 receiving Liraglutide treatment and 13 receiving placebo) underwent 4D-respiratory-gated FDG-PET/CT before and after treatment.

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Canine Cerebrospinal Fluid Analysis Using Two New Automated Techniques: The Sysmex XN-V Body Fluid Mode and an Artificial-Intelligence-Based Algorithm.

Animals (Basel)

May 2024

Clinical Laboratory, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland.

Cerebrospinal fluid analysis is an important diagnostic test when assessing a neurological canine patient. For this analysis, the total nucleated cell count and differential cell counts are routinely taken, but both involve time-consuming manual methods. To investigate faster automated methods, in this study, the Sysmex XN-V body fluid mode and the deep-learning-based algorithm generated by the Olympus VS200 slide scanner were compared with the manual methods in 161 canine cerebrospinal fluid samples for the total nucleated cell count and in 65 samples with pleocytosis for the differential counts.

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Article Synopsis
  • Intra-operative hypotension is a frequent issue during surgery using general anesthesia in both dogs and humans, prompting the development of a computer-controlled infusion system for norepinephrine (NE) to stabilize blood pressure.
  • The study involved a closed-loop infusion system that administered NE while monitoring mean arterial pressure (MAP) in six Beagle dogs undergoing anesthesia with isoflurane, adjusting dosages every 2 seconds.
  • Results showed that when the system was active, it effectively maintained the MAP within the target range of 55-65 mmHg for 96% of the time during the latter half of a 30-minute period, demonstrating its efficacy in preventing hypotension.
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Background: Sarcoptic mange is rare in cats. The main symptoms reported in cases of feline sarcoptic mange include crusty lesions and pruritus, although these may vary in severity among individuals.

Objectives: This report describes three cats infested with Sarcoptes scabiei, all presenting with pruritus and excoriation.

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Until recently, the diagnosis of feline infectious peritonitis (FIP) in cats usually led to euthanasia, but recent research has revealed that antiviral drugs, including the nucleoside analog GS-441524, have the potential to effectively cure FIP. Alpha-1-acid glycoprotein (AGP) has been suggested as a diagnostic marker for FIP. However, AGP quantification methods are not easily accessible.

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