18,453 results match your criteria: "Estonia; Tartu University Hospital[Affiliation]"

Levodopa Impairs Lysosomal Function in Sensory Neurons In Vitro.

Biology (Basel)

November 2024

Department of Pharmacology, Institute of Biomedicine and Translational Medicine, University of Tartu, 50411 Tartu, Estonia.

Parkinson's disease (PD) is the second-most common neurodegenerative disease worldwide. Patients are diagnosed based upon movement disorders, including bradykinesia, tremor and stiffness of movement. However, non-motor signs, including constipation, rapid eye movement sleep behavior disorder, smell deficits and pain are well recognized.

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miR-193b-5p and miR-374b-5p Are Aberrantly Expressed in Endometriosis and Suppress Endometrial Cell Migration In Vitro.

Biomolecules

November 2024

WHO Collaborating Centre, Division of Neonatology, Obstetrics, Gynecology, and Reproductive Health, Department of Women's and Children's Health, Karolinska University Hospital, Karolinska Institutet, SE 17176 Stockholm, Sweden.

(1) Background: Endometriosis is a highly prevalent gynecological disease affecting 10% of women of reproductive age worldwide. miRNAs may play a role in endometriosis, though their exact function remains unclear. This study aimed to identify differentially expressed miRNAs in endometriosis and study their functions in the disease.

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: There are strict demands on body weight and shape in highly trained adolescent female athletes, and they are in the highest risk group for the development of eating disorders. This study aims to compare the behavioural eating patterns between highly trained female adolescent athletes and untrained controls (UCs), and to describe the associations between behavioural eating patterns and different energy homeostasis hormones. : A total of 33 rhythmic gymnasts (RGs), 20 swimmers (SWs), and 20 UCs ( = 20) that were 14 to 18 years old participated in this investigation.

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Smart batteries, i.e., equipped with internal and external sensors, are emerging as promising solutions to enhance battery state of health and optimize operating conditions.

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  • The study investigates how the surrounding DNA sequence affects the repair of double-stranded breaks caused by CRISPR/Cas9, using various genetically modified mouse embryonic stem cell lines.
  • Researchers analyzed over 236,000 mutation outcomes from 2800 synthetic DNA sequences, discovering specific roles of DNA repair proteins like Prkdc and Polm in generating small insertions and deletions.
  • They developed predictive models for these mutational outcomes based on their findings, enhancing the understanding of DNA repair mechanisms and enabling more accurate control of CRISPR-induced mutations.
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  • - The study presents a comprehensive whole-genome dataset of 34 Armenian individuals, revealing their population structure and demographic history, showing that eastern, central, and western Armenians are genetically similar.
  • - The Sasun population, previously thought to have been heavily influenced by Assyrian genetics, was found to have a unique genetic profile resulting from a recent bottleneck event rather than direct Assyrian ancestry.
  • - Research also explores the origins of Armenians, finding no support for Herodotus’ claims of Balkan ancestry, but identifying connections to ancient Neolithic Levantine Farmers and documenting unique mutations related to common health disorders in the community.
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In recent years, integrated veterinary herd health management (VHHM), improving animal health, welfare, food safety, public health, farm management, and economics, has become ever-more important in the European Union due to structural and regulatory advancements. A mixed-methods study analyzed the current state and gaps in VHHM education and training across Europe. Data from 41 European veterinary institutions showed that 83% ( = 34/41) offered VHHM education, either as standalone courses and/or integrated into other subjects.

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European countries have included healthcare workers (HCWs) among priority groups for COVID-19 vaccination. We established a multi-country hospital network to measure the SARS-CoV-2 incidence and effectiveness of COVID-19 vaccines among HCWs against laboratory-confirmed SARS-CoV-2 infection. HCWs from 19 hospitals in 10 countries participated in a dynamic prospective cohort study, providing samples for SARS-CoV-2 testing at enrolment and during weekly/fortnightly follow-up.

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Structural, Mechanical, and Optical Properties of Laminate-Type Thin Film SWCNT/SiON Composites.

Nanomaterials (Basel)

November 2024

Department of Materials and Environmental Technology, School of Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.

The development of new encapsulating coatings for flexible solar cells (SCs) can help address the complex problem of the short lifespan of these devices, as well as optimize the technological process of their production. In this study, new laminate-type protective composite coatings were prepared using a silicon oxynitride thin-film matrix obtained by curing the pre-ceramic polymer perhydropolysilazane (PHPS) through two low-temperature methods: (i) thermal annealing at 180 °C and (ii) exposure to UV radiation at wavelengths of 185 and 254 nm. Single-walled carbon nanotubes (SWCNTs) were used as fillers via dry transfer, facilitating their horizontal orientation within the matrix.

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  • The LANDMARK trial compared the balloon-expandable Myval transcatheter heart valve (THV) series to the SAPIEN and Evolut THV series in 768 patients to evaluate safety and effectiveness.
  • Results showed that Myval achieved non-inferiority to SAPIEN (24.7% vs 24.1%) and Evolut (24.7% vs 30.0%) regarding a primary composite safety endpoint.
  • Additionally, while Myval had better pressure gradient metrics compared to SAPIEN, Evolut showed slightly higher rates of prosthetic valve regurgitation compared to Myval but no significant difference between Myval and SAPIEN.
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We present a magneto-optical Kerr effect (MOKE) spectrometer based on a modified Martin-Puplett interferometer, utilizing continuous wave sub-THz low-power radiation in a broad frequency range. This spectrometer is capable of measuring the frequency dependence of the MOKE response function, both the Kerr rotation and ellipticity, simultaneously, with accuracy limited by a sub-milliradian threshold, without the need for a reference measurement. The instrument's versatility allows it to be coupled to a cryostat with optical windows, enabling studies of a variety of quantum materials such as unconventional superconductors, two-dimensional electron gas systems, quantum magnets, and other systems showing optical Hall response at sub-Kelvin temperatures and in high magnetic fields.

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  • Patchy data on litter decomposition in wetlands limits understanding of carbon storage, prompting a global study involving over 180 wetlands across multiple countries and climates.
  • The study found that freshwater wetlands and tidal marshes had more organic matter remaining after decay, indicating better potential for carbon preservation in these areas.
  • Elevated temperatures positively affect the decomposition of resistant organic matter, with projections suggesting an increase in decay rates by 2050; however, the impact varies by ecosystem type and highlights the need to recognize both local and global factors influencing carbon storage.
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Wheat field earthworms under divergent farming systems across a European climate gradient.

Ecol Appl

January 2025

Section for Soil Science and Agricultural Chemistry, Department of Plant Biology and Soil Science, Universidade de Vigo, Ourense, Spain.

Earthworms are a key faunal group in agricultural soils, but little is known on how farming systems affect their communities across wide climatic gradients and how farming system choice might mediate earthworms' exposure to climate conditions. Here, we studied arable soil earthworm communities on wheat fields across a European climatic gradient, covering nine pedo-climatic zones, from Mediterranean to Boreal (S to N) and from Lusitanian to Pannonian (W to E). In each zone, 20-25 wheat fields under conventional or organic farming were sampled.

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Accurately predicting air quality concentrations is a challenging task due to the complex interactions of pollutants and their reliance on nonlinear processes. This study introduces an innovative approach in environmental engineering, employing artificial intelligence techniques to forecast air quality in Semnan, Iran. Comprehensive data on seven different pollutants was initially collected and analyzed.

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During 1881-1895, a small number of male patients-18 in total-were diagnosed with hysteria at the University of Tartu Psychiatric Hospital. Rather than constituting an obscure psychiatric institution on the margins of European medical traditions, Tartu during these years witnessed the arrival of several influential psychiatrists: Hermann Emminghaus (1845-1904), Emil Kraepelin (1856-1926), and Vladimir Chizh (1855-1922). Yet, when comparing patient case records of male hysteria written by doctors who also published journal articles and medical textbooks on the topic, one can detect a clear inconsistency between the theory and practice of psychiatry at an important moment of its formation.

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Background And Aims: A limited number of randomized controlled trials (RCTs) have examined the use of lipid emulsions (LEs) of different compositions in home parenteral nutrition (HPN), and there are very few data on the long-term use of omega-3 (n-3) polyunsaturated fatty acids (PUFAs). The study's objective was to assess safety and tolerability of an n-3 PUFA-enriched LE in adult patients suffering from chronic intestinal failure (CIF) requiring long-term HPN.

Methods: In this prospective, randomized, controlled, double-blind, multicentre, international clinical trial, which was conducted at eleven sites, adult patients in need of HPN including lipids received either the investigational product, an n-3 PUFA-enriched medium/long-chain triglyceride (MCT/LCT) LE, or the reference product, a standard MCT/LCT LE, for an average duration of eight weeks.

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  • The study investigates the relationship between IL-6 signaling, particularly through the SNP rs2228145, and the risk of developing tuberculosis (TB), considering that inhibitors of IL-6 signaling might increase TB progression risk.
  • The researchers conducted a meta-analysis of various genome-wide association studies (GWAS) to analyze genetic data and extract effect estimates related to the C allele of rs2228145, which is associated with reduced IL-6 signaling.
  • Preliminary findings include data from 17 GWAS, covering a substantial sample of individuals with tuberculosis and a large control population, aiming to understand how genetic factors might influence TB susceptibility.
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Elocalcitol mitigates high-fat diet-induced microglial senescence via miR-146a modulation.

Immun Ageing

November 2024

Department of Pharmacology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia.

Article Synopsis
  • miR-146a regulates inflammation and is involved in high-fat diet-induced hypothalamic senescence, but its role has not been fully explored.
  • Wild-type mice on a high-fat diet showed increased body weight, cognitive decline, and senescence markers in the brain, while knocking out miR-146a exacerbated these effects.
  • Treatment with elocalcitol improved health outcomes in HFD WT mice by upregulating miR-146a and mitigating senescence effects, highlighting its therapeutic potential, which was not effective in miR-146a knockout mice.
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The first search for soft unclustered energy patterns (SUEPs) is performed using an integrated luminosity of 138  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV, collected in 2016-2018 by the CMS detector at the LHC. Such SUEPs are predicted by hidden valley models with a new, confining force with a large 't Hooft coupling. In events with boosted topologies, selected by high-threshold hadronic triggers, the multiplicity and sphericity of clustered tracks are used to reject the background from standard model quantum chromodynamics.

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Methylocystis borbori sp.nov., a novel methanotrophic bacterium from the sludge of a freshwater lake and its metabolic properties.

Antonie Van Leeuwenhoek

November 2024

Federal Research Center «Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki, 5, Pushchino, Moscow Region, Russia, 142290.

Article Synopsis
  • A novel methanotrophic strain named 9N was discovered in freshwater lake sludge, characterized as aerobic, Gram-negative, non-motile, and capable of utilizing methane or methanol for growth under specific temperature and pH conditions.
  • Genetic analysis placed strain 9N closely with the genus Methylocystis, with significant genomic data revealing its potential for detoxifying harmful substances and promoting plant growth.
  • The strain has been proposed as a new species, Methylocystis borbori sp. nov., with its type strain cataloged as 9N (= VKM B-3616 = KCTC 92566).
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A Cyclic Peptide Targets Glioblastoma by Binding to Aberrantly Exposed SNAP25.

Mol Pharm

January 2025

Laboratory of Precision and Nanomedicine, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 14b, Tartu 50411, Estonia.

Article Synopsis
  • The study identifies a cyclic peptide called CES that selectively targets glioblastoma tumors, offering insights into disease-specific changes and potential diagnostic markers.* -
  • Researchers found that CES homed in on the tumor vasculature and bound to a protein called SNAP25, which could serve as a receptor for targeting therapies.* -
  • CES was shown to enhance drug delivery and selectively kill glioblastoma cells, indicating SNAP25’s role as both a therapeutic target and a possible marker for glioblastoma detection.*
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  • Dilated cardiomyopathy (DCM) is a major cause of heart failure, and this study analyzes genetic factors by examining 14,256 DCM cases and 36,203 participants from the UK Biobank for related traits.
  • Researchers discovered 80 genomic risk loci and pinpointed 62 potential effector genes tied to DCM, including some linked to rare variants.
  • The study uses advanced transcriptomics to explore how cellular functions contribute to DCM, showing that polygenic scores can help predict the disease in the general population and emphasize the importance of genetic testing and development of precise treatments.
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Automated extrusion-based dispensing: Personalized dosing and quality control of clopidogrel tablets for pediatric care.

Eur J Pharm Sci

January 2025

Pharmaceutical Sciences Laboratory, Science and Engineering, Åbo Akademi University, BioCity, Tykistökatu 6A, Turku FI-20520, Finland; CurifyLabs Oy, Salmisaarenaukio 1, Helsinki FI-00180, Finland.

The exploration of three-dimensional (3D) printing inspired technologies in pharmaceutical compounding reveals a promising frontier in personalized medicine manufacture. This study focuses on the development of clopidogrel bisulphate tablets, with doses ranging from 2 mg to 20 mg per tablet, suitable for pediatric use. The study explored a semi-solid extrusion-based deposition technology already being used in compounding pharmacies across several European locations.

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Background: The knowledge and proficiency of primary care practitioners (PCPs) in diagnosing and managing irritable bowel syndrome (IBS) remain generally low and variable internationally. This variability is partly due to a lack of familiarity with the Rome Foundation diagnostic criteria and treatment guidelines for this condition.

Methods: We conducted an electronic survey of PCPs in the United States and nine European countries to assess their understanding of IBS pathophysiology; the use of Rome IV criteria in diagnosis, knowledge of and frequency in prescribing various recommended treatments; and the likelihood of referring patients with suspected IBS to subspecialists.

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