Publications by authors named "Takacs A"

The palladium-catalyzed aminocarbonylation is one of the most effective methods for the synthesis of carboxamides having great importance. Replacing fossil-based organic solvents in this routinely used catalytic protocol with biomass-derived media is crucial for developing environmentally safe alternatives and towards sustainability considerations. In this study, the open-chain derivatives of bio-originated substance g-valerolactone i.

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Palladium-catalyzed carbonylation reactions of -phenylene dihalides were studied using aminoethanols as heterobifunctional ,-nucleophiles. The activity of aryl-iodide and -bromide as well as the chemoselective transformation of amine and hydroxyl functionalities were studied systematically under carbonylation conditions. Aminocarbonylation can be selectively realized under optimized conditions, enabling the formation of amide alcohols, and the challenging alkoxycarbonylation can also be proved feasible, enabling amide-ester production.

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This paper is a write-up of the ideas that were presented, developed and discussed at the fourth International Workshop on QCD Challenges from pp to AA, which took place in February 2023 in Padua, Italy. The goal of the workshop was to focus on some of the open questions in the field of high-energy heavy-ion physics and to stimulate the formulation of concrete suggestions for making progresses on both the experimental and theoretical sides. The paper gives a brief introduction to each topic and then summarizes the primary results.

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Functional movement disorders are amongst the most common and disabling neurological conditions, placing a significant burden on the healthcare system. Despite the frequency and importance of functional movement disorders, our understanding of the underlying pathophysiology is limited, hindering the development of causal treatment options. Traditionally, functional movement disorders were considered as a psychiatric condition, associated with involuntary movements triggered by psychological stressors.

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In 2019, random samples of growing as a weed were surveyed to uncover their virus infections at two locations in Hungary. This pilot study revealed infection with three viruses, two appearing for the first time in the country. As follow-up research, in the summer of 2021, we collected symptomatic leaves of several monocotyledonous plants in the same locations and determined their viromes using small RNA high-throughput sequencing (HTS).

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A library of C-3 functionalized flavones was successfully provided via palladium-catalyzed amino- and aryloxycarbonylation reactions of 3-iodoflavone (), under mild conditions. This methodology showed good functional group tolerance using a variety of amines and phenols, under an atmospheric pressure of carbon monoxide as a carbonyl source. While the flavone-3-carboxamides () were produced in 22-79%, the flavone-3-carboxylates () were obtained in excellent yields (up to 88%), under identical reaction conditions, just by switching -nucleophiles to -nucleophiles.

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Article Synopsis
  • Researchers studied the impact of fumonisin B mycotoxins on rabbits to see how well positron emission tomography-magnetic resonance (PET MR) imaging could detect liver damage.
  • The study involved administering mycotoxins in their diet for 14 days and measuring liver glucose uptake using an F-FDG radiotracer before and after treatment.
  • Findings showed increased liver glucose uptake and some correlation between tissue health markers, indicating mild liver toxicity can be sensitively detected with this imaging technique.
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Objective: This randomized clinical trial aimed to assess the feasibility of computer-assisted open exposure of palatally impacted canines.

Materials And Methods: Patients aged 11-30 years who required orthodontic eruption for the full palatal impaction of their canines were included in this study. Exclusion criteria were psychosocial and dental contraindications of orthodontic treatment, congenital craniofacial disorders, and trauma in the patient's history in the vicinity of the surgical site.

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Gilles de la Tourette syndrome (GTS) is a disorder characterised by motor and vocal tics, which may represent habitual actions as a result of enhanced learning of associations between stimuli and responses (S-R). In this study, we investigated how adults with GTS and healthy controls (HC) learn two types of regularities in a sequence: statistics (non-adjacent probabilities) and rules (predefined order). Participants completed a visuomotor sequence learning task while EEG was recorded.

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The effectiveness of hypnosis-based pain management is well-established. However, mechanisms of action and specific effective components are not well understood. The sociocognitive theory of hypnosis proposes that the effectiveness of hypnosis for pain management is determined by the nonspecific features of response expectancy and context.

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Gilles de la Tourette syndrome is a neurodevelopmental disorder characterized by motor and vocal tics. It is associated with enhanced processing of stimulus-response associations, including a higher propensity to learn probabilistic stimulus-response contingencies (i.e.

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Pancreatic adenocarcinoma is one of the tumours with the worst prognosis, with a 5-year survival rate of 5-10%. Our aim was to find and optimise peptide-based drug conjugates with daunorubicin (Dau) as the cytotoxic antitumour agent. When conjugated with targeting peptides, the side effect profile and pharmacokinetics of Dau can be improved.

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Palladium-catalyzed aminocarbonylation of 3-iodochromone was studied in the presence of primary and secondary amines using atmospheric pressure of carbon monoxide as a carbonyl source. This procedure successfully provided a library of chromone-3-carboxamides and 3-substituted chroman-2,4-diones in 40 to 92% isolated yields. The reaction proceeded via highly chemoselective aminocarbonylation (up to 100%) in the presence of secondary amines by using monodentate or bidentate phosphine ligands.

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Article Synopsis
  • Cardiovascular diseases (CVDs) are the top cause of death in older adults, and levels of PCSK9, a cholesterol regulator, increase with age.
  • In research on humans and rats, higher PCSK9 levels were linked to age-related cardiovascular issues and liver fat degeneration.
  • The study found that targeting PCSK9 with alirocumab slowed CVD progression, highlighting its significant role in cardiovascular health as we age.
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The existing plant trait databases' applicability is limited for studies dealing with the flora and vegetation of the eastern and central part of Europe and for large-scale comparisons across regions, mostly because their geographical data coverage is limited and they incorporate records from several different sources, often from regions with markedly different climatic conditions. These problems motivated the compilation of a regional dataset for the flora of the Pannonian region (Eastern Central Europe). PADAPT, the Pannonian Dataset of Plant Traits relies on regional data sources and collates data on 54 traits and attributes of the plant species of the Pannonian region.

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Objectives: This meta-analysis aimed to determine the accuracy of currently available computer-assisted implant surgery (CAIS) modalities under in vitro conditions and investigate whether these novel techniques can achieve clinically acceptable accuracy.

Data: In vitro studies comparing the postoperative implant position with the preoperative plan were included. Risk of bias was assessed using the Quality Assessment Tool For In Vitro Studies (QUIN Tool) and a sensitivity analysis was conducted using funnel plots.

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L. is a climbing shrub and a pioneer plant in abandoned orchards or vineyards that are widespread in temperate climate zones. In past years, several viruses infecting the species have been identified, including different ilarviruses.

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Background: The purpose of this in vitro study was to compare the accuracy of implant placement in model surgeries according to the design of the drills (straight drills or step drills) used to finalize the implant bed during pilot-guided static computer-assisted implant surgery (sCAIS).

Methods: Model surgeries were carried out on resin models randomly assigned to three study groups. Virtual planning software (coDiagnostiX 10.

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  • Tonsillopharyngitis, common in children, is often treated with antibiotics despite most cases being viral, which leads to antibiotic resistance.
  • A study used machine learning to create a decision tree that can distinguish between EBV/CMV-related tonsillopharyngitis and other infections, utilizing clinical symptoms and blood test data from 242 children.
  • The decision tree demonstrated high accuracy, reducing unnecessary antibiotic prescriptions by about 67%, suggesting it could be an effective tool in clinical settings to prevent over-treatment.
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Background: Although functional neurological movement disorders (FMD) are characterized by motor symptoms, sensory processing has also been shown to be disturbed. However, how the integration of perception and motor processes, essential for the control of goal-directed behavior, is altered in patients with FMD is less clear. A detailed investigation of these processes is crucial to foster a better understanding of the pathophysiology of FMD and can systematically be achieved in the framework of the theory of event coding (TEC).

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Age-related macular degeneration (AMD) is associated with formation of drusen, clusters of lipids, and oxidized lipid products under the retinal pigment epithelium (RPE). 7-Ketocholesterol (7KC) is a form of oxidized cholesterol present in drusen and is hypothesized to play a role in AMD pathogenesis. The association of 7KC with cellular toxicity and inflammation, key elements of AMD pathology, has been demonstrated.

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SH2 domains are key mediators of phosphotyrosine-based signalling, and therapeutic targets for diverse, mostly oncological, disease indications. They have a highly conserved structure with a central beta sheet that divides the binding surface of the protein into two main pockets, responsible for phosphotyrosine binding (pY pocket) and substrate specificity (pY + 3 pocket). In recent years, structural databases have proven to be invaluable resources for the drug discovery community, as they contain highly relevant and up-to-date information on important protein classes.

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One of the most important and most easily measurable physical characteristics of plant seeds is their weight, which influences and indicates crucial ecological processes. Seed weight affects spatial and temporal dispersibility, and can also influence seed predation and the germination, growth and survival of seedlings. Providing trait data for species missing from international databases is key to promote studies that advance our understanding of the functioning of plant communities and ecosystems, which is an essential issue in the face of the global climate change and biodiversity loss.

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Palladium-catalyzed amino- and alkoxycarbonylation reactions of aryl iodides were investigated in the presence of aliphatic heterobifunctional N,O-nucleophiles. Selective synthesis of amide alcohols and amide esters was realized, controlled by the base and substrate ratio. The effect of iodobenzene substituents was also studied with surprising results in terms of product selectivity.

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