288 results on '"Doležalová, P."'
Search Results
2. Demographic, epidemiological and clinical characteristics of Ukrainian war refugees with HIV infection in the Slovak Republic
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Ricardo Massmann, Kristína Doležalová, Lubomír Soják, Olena Samsonová, Danica Valkovičová Staneková, Ondrej Zahornacký, Pavol Jarčuška, Mária Záriš Vachalíková, Diana Vološinová, Ľubica Piesecká, Veronika Vahalová, Katarína Šimeková, Terézia Smiešková, Alexandra Bražinová, Ivy Kigen, Marek Malý, and Ladislav Machala
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HIV ,AIDS ,Antiretroviral therapy ,Slovakia ,Refugees ,Ukraine ,Arctic medicine. Tropical medicine ,RC955-962 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Background: The Slovak Republic, an Eastern European country, borders Ukraine, which has one of the highest rates of HIV/AIDS in Europe. This study aims to inform readers about the demographic characteristics of Ukrainian war refugees with HIV/AIDS seeking temporary protection status in Slovakia due to the Russian invasion of February 24, 2022. It focuses on their epidemiology, immunological profiles, co-infections, and treatment. Design: Multicenter, retrospective study between March 1, 2022, and March 31, 2023. Methods: Data were collected from all Ukrainian patients with refugee status living with HIV or newly diagnosed, who presented to any of the five HIV/AIDS centers in Slovakia. Information was obtained through medical interviews, physical examinations, laboratory tests and medical reports from the Ukrainian Ministry of Health. Results: From March 1, 2022, to March 31, 2023, 141 Ukrainian refugees were included, mostly women (56.7 %, n = 80), with a median age of 41 years. The median CD4+ count was 680 cells/mL; 69.2 % (n = 97) had a viral load below 40 copies/mL. On arrival, 87.8 % (n = 123) were on ART, 90.2 % (n = 111) on dolutegravir. Coinfections included hepatitis C (31 %, n = 41), hepatitis B (12.5 %, n = 17), and tuberculosis (11.3 %, n = 16). Three died from AIDS complications. Conclusion: The study provides a detailed overview of the epidemiological, demographic, immunological, co-infection, and treatment characteristics of Ukrainian PLWHA displaced by the war to the Slovak republic. With the conflict ongoing, it is necessary to be prepared for more refugees in the coming months.
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- 2024
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3. Weak limit of homeomorphisms in $W^{1,n-1}$: invertibility and lower semicontinuity of energy
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Doležalová, Anna, Hencl, Stanislav, and Molchanova, Anastasia
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Mathematics - Functional Analysis - Abstract
Let $\Omega$, $\Omega'\subset\mathbb{R}^n$ be bounded domains and let $f_m\colon\Omega\to\Omega'$ be a sequence of homeomorphisms with positive Jacobians $J_{f_m} >0$ a.e. and prescribed Dirichlet boundary data. Let all $f_m$ satisfy the Lusin (N) condition and $\sup_m \int_{\Omega}(|Df_m|^{n-1}+A(|\text{cof} Df_m|)+\phi(J_f))<\infty$, where $A$ and $\varphi$ are positive convex functions. Let $f$ be a weak limit of $f_m$ in $W^{1,n-1}$. Provided certain growth behaviour of $A$ and $\varphi$, we show that $f$ satisfies the (INV) condition of Conti and De Lellis, the Lusin (N) condition, and polyconvex energies are lower semicontinuous.
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- 2022
4. Mappings of generalized finite distortion and continuity
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Doležalová, Anna, Kangasniemi, Ilmari, and Onninen, Jani
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Mathematics - Analysis of PDEs ,Mathematics - Complex Variables ,Mathematics - Functional Analysis ,30C65 (primary) 35R45 (secondary) - Abstract
We study continuity properties of Sobolev mappings $f \in W_{\mathrm{loc}}^{1,n} (\Omega, \mathbb{R}^n)$, $n \ge 2$, that satisfy the following generalized finite distortion inequality \[\lvert Df(x)\rvert^n \leq K(x) J_f(x) + \Sigma (x)\] for almost every $x \in \mathbb{R}^n$. Here $K \colon \Omega \to [1, \infty)$ and $\Sigma \colon \Omega \to [0, \infty)$ are measurable functions. Note that when $\Sigma \equiv 0$, we recover the class of mappings of finite distortion, which are always continuous. The continuity of arbitrary solutions, however, turns out to be an intricate question. We fully solve the continuity problem in the case of bounded distortion $K \in L^\infty (\Omega)$, where a sharp condition for continuity is that $\Sigma$ is in the Zygmund space $\Sigma \log^\mu(e + \Sigma) \in L^1_{\mathrm{loc}}(\Omega)$ for some $\mu > n-1$. We also show that one can slightly relax the boundedness assumption on $K$ to an exponential class $\exp(\lambda K) \in L^1_{\mathrm{loc}}(\Omega)$ with $\lambda > n+1$, and still obtain continuous solutions when $\Sigma \log^\mu(e + \Sigma) \in L^1_{\mathrm{loc}}(\Omega)$ with $\mu > \lambda$. On the other hand, for all $p, q \in [1, \infty]$ with $p^{-1} + q^{-1} = 1$, we construct a discontinuous solution with $K \in L^p_{\mathrm{loc}}(\Omega)$ and $\Sigma/K \in L^q_{\mathrm{loc}}(\Omega)$, including an example with $\Sigma \in L^\infty_{\mathrm{loc}}(\Omega)$ and $K \in L^1_{\mathrm{loc}}(\Omega)$., Comment: 37 pages, 2 figures
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- 2022
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5. Striking variation in chromosome structure within Musa acuminata subspecies, diploid cultivars, and F1 diploid hybrids
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Denisa Beránková, Jana Čížková, Gabriela Majzlíková, Alžběta Doležalová, Hassan Mduma, Allan Brown, Rony Swennen, and Eva Hřibová
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oligo painting FISH ,chromosome translocation ,comparative cytogenetics ,Musa acuminata ,F1 hybrids ,Plant culture ,SB1-1110 - Abstract
The majority of cultivated bananas originated from inter- and intra(sub)specific crosses between two wild diploid species, Musa acuminata and Musa balbisiana. Hybridization and polyploidization events during the evolution of bananas led to the formation of clonally propagated cultivars characterized by a high level of genome heterozygosity and reduced fertility. The combination of low fertility in edible clones and differences in the chromosome structure among M. acuminata subspecies greatly hampers the breeding of improved banana cultivars. Using comparative oligo-painting, we investigated large chromosomal rearrangements in a set of wild M. acuminata subspecies and cultivars that originated from natural and human-made crosses. Additionally, we analyzed the chromosome structure of F1 progeny that resulted from crosses between Mchare bananas and the wild M. acuminata ‘Calcutta 4’ genotype. Analysis of chromosome structure within M. acuminata revealed the presence of a large number of chromosomal rearrangements showing a correlation with banana speciation. Chromosome painting of F1 hybrids was complemented by Illumina resequencing to identify the contribution of parental subgenomes to the diploid hybrid clones. The balanced presence of both parental genomes was revealed in all F1 hybrids, with the exception of one clone, which contained only Mchare-specific SNPs and thus most probably originated from an unreduced diploid gamete of Mchare.
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- 2024
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6. Eslicarbazepine‐induced hyponatremia: A retrospective single‐center real clinical practice study
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Ondřej Strýček, Vít Všianský, Irena Doležalová, Jitka Kočvarová, Martin Pail, and Milan Brázdil
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eslicarbazepine ,hyponatremia ,risk factor ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Hyponatremia is a typical side effect of antiseizure drugs from the dibenzazepine family. The study investigated the prevalence of hyponatremia in patients with epilepsy who were treated with eslicarbazepine. We aimed to determine the prevalence of hyponatremia, reveal the factors leading to the discontinuation of treatment, and identify possible risk factors for the development of hyponatremia including the dose dependency. The medical records of 164 patients with epilepsy taking eslicarbazepine in our center were analyzed. The overall prevalence of hyponatremia was 30.5%. The prevalence of mild hyponatremia, seen in 14%–20% of patients, was not dose dependent. The prevalence of moderate and severe hyponatremia was significantly dose dependent. The severity of hyponatremia was significantly dose dependent. Severe hyponatremia was found in 6.1% of patients. Hyponatremia was asymptomatic in the majority of cases, and in 48% did not require any management. Hyponatremia was the reason for discontinuation in 6.2% of patients. The major risk factor for developing hyponatremia was older age. The study shows that eslicarbazepine‐induced hyponatremia is usually mild and asymptomatic. It usually does not require any management and seldom leads to treatment discontinuation. Hyponatremia is dose dependent. Another major risk for developing hyponatremia (besides dose) is older age.
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- 2024
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7. A differential scanning calorimetry (DSC) approach for assessing the quality of polyethylene terephthalate (PET) waste for physical recycling: a proof-of-concept study
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Šudomová, Lucie, Doležalová Weissmannová, Helena, Steinmetz, Zacharias, Řezáčová, Veronika, and Kučerík, Jiří
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- 2023
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8. The Influence of Interaction with Nature in Childhood on Future Pro-environmental Behavior
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Krepelkova, Šárka Doležalová, Krajhanzl, Jan, and Kroufek, Roman
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Pro-environmental behavior is a key to environmental sustainability. It is important to know which variables influence the development of pro-environmental behavior and how important direct interaction with nature is for future environmental engagement. The aim of the research was to examine the correlation between childhood interaction with nature and pro-environmental behavior as an adult and the mediators influencing this correlation. The respondents (N = 370) were selected by the snowball method and completed an on-line questionnaire. Bivariate correlation and parallel mediation analysis were done. Previous research studies focused mainly on one type of influence, and this research brought a comparison of three mediators. The results confirmed that interaction with nature in childhood affects future pro-environmental behavior. The main mediator seems to be the affective mediator. The cognitive mediator and interaction with nature in adulthood had only a small mediation effect. Children's emotional bonding with nature is the important element for the development of pro-environmental behavior. This appears to be a more effective way of ensuring stronger pro-environmental behavior in the future than building environmental knowledge or relying on sufficient interaction with nature in adulthood.
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- 2020
9. Weak limit of homeomorphisms in $W^{1,n-1}$ and (INV) condition
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Doležalová, Anna, Hencl, Stanislav, and Malý, Jan
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Mathematics - Functional Analysis - Abstract
Let $\Omega,\Omega'\subset\mathbb{R}^3$ be Lipschitz domains, let $f_m:\Omega\to\Omega'$ be a sequence of homeomorphisms with prescribed Dirichlet boundary condition and $\sup_m \int_{\Omega}(|Df_m|^2+1/J^2_{f_m})<\infty$. Let $f$ be a weak limit of $f_m$ in $W^{1,2}$. We show that $f$ is invertible a.e., more precisely it satisfies the (INV) condition of Conti and De Lellis and thus it has all the nice properties of mappings in this class. Generalization to higher dimensions and an example showing sharpness of the condition $1/J^2_f\in L^1$ are also given. Using this example we also show that unlike the planar case the class of weak limits and the class of strong limits of $W^{1,2}$ Sobolev homeomorphisms in $\mathbb{R}^3$ are not the same.
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- 2021
10. Insight into chromatin compaction and spatial organization in rice interphase nuclei
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Alžběta Doležalová, Denisa Beránková, Veronika Koláčková, and Eva Hřibová
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3D immuno-FISH ,chromosome painting ,chromosome territory ,rice ,spatial organization ,microscopy ,Plant culture ,SB1-1110 - Abstract
Chromatin organization and its interactions are essential for biological processes, such as DNA repair, transcription, and DNA replication. Detailed cytogenetics data on chromatin conformation, and the arrangement and mutual positioning of chromosome territories in interphase nuclei are still widely missing in plants. In this study, level of chromatin condensation in interphase nuclei of rice (Oryza sativa) and the distribution of chromosome territories (CTs) were analyzed. Super-resolution, stimulated emission depletion (STED) microscopy showed different levels of chromatin condensation in leaf and root interphase nuclei. 3D immuno-FISH experiments with painting probes specific to chromosomes 9 and 2 were conducted to investigate their spatial distribution in root and leaf nuclei. Six different configurations of chromosome territories, including their complete association, weak association, and complete separation, were observed in root meristematic nuclei, and four configurations were observed in leaf nuclei. The volume of CTs and frequency of their association varied between the tissue types. The frequency of association of CTs specific to chromosome 9, containing NOR region, is also affected by the activity of the 45S rDNA locus. Our data suggested that the arrangement of chromosomes in the nucleus is connected with the position and the size of the nucleolus.
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- 2024
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11. Development of a dynamic type 2 diabetes risk prediction tool: a UK Biobank study
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Dolezalova, Nikola, Cairo, Massimo, Despotovic, Alex, Booth, Adam T. C., Reed, Angus B., Morelli, Davide, and Plans, David
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Computer Science - Machine Learning - Abstract
Diabetes affects over 400 million people and is among the leading causes of morbidity worldwide. Identification of high-risk individuals can support early diagnosis and prevention of disease development through lifestyle changes. However, the majority of existing risk scores require information about blood-based factors which are not obtainable outside of the clinic. Here, we aimed to develop an accessible solution that could be deployed digitally and at scale. We developed a predictive 10-year type 2 diabetes risk score using 301 features derived from 472,830 participants in the UK Biobank dataset while excluding any features which are not easily obtainable by a smartphone. Using a data-driven feature selection process, 19 features were included in the final reduced model. A Cox proportional hazards model slightly overperformed a DeepSurv model trained using the same features, achieving a concordance index of 0.818 (95% CI: 0.812-0.823), compared to 0.811 (95% CI: 0.806-0.815). The final model showed good calibration. This tool can be used for clinical screening of individuals at risk of developing type 2 diabetes and to foster patient empowerment by broadening their knowledge of the factors affecting their personal risk., Comment: 12 pages
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- 2021
12. Development of digitally obtainable 10-year risk scores for depression and anxiety in the general population
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Morelli, D., Dolezalova, N., Ponzo, S., Colombo, M., and Plans, D.
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Computer Science - Machine Learning ,Statistics - Machine Learning - Abstract
The burden of depression and anxiety in the world is rising. Identification of individuals at increased risk of developing these conditions would help to target them for prevention and ultimately reduce the healthcare burden. We developed a 10-year predictive algorithm for depression and anxiety using the full cohort of over 400,000 UK Biobank (UKB) participants without pre-existing depression or anxiety using digitally obtainable information. From the initial 204 variables selected from UKB, processed into > 520 features, iterative backward elimination using Cox proportional hazards model was performed to select predictors which account for the majority of its predictive capability. Baseline and reduced models were then trained for depression and anxiety using both Cox and DeepSurv, a deep neural network approach to survival analysis. The baseline Cox model achieved concordance of 0.813 and 0.778 on the validation dataset for depression and anxiety, respectively. For the DeepSurv model, respective concordance indices were 0.805 and 0.774. After feature selection, the depression model contained 43 predictors and the concordance index was 0.801 for both Cox and DeepSurv. The reduced anxiety model, with 27 predictors, achieved concordance of 0.770 in both models. The final models showed good discrimination and calibration in the test datasets.We developed predictive risk scores with high discrimination for depression and anxiety using the UKB cohort, incorporating predictors which are easily obtainable via smartphone. If deployed in a digital solution, it would allow individuals to track their risk, as well as provide some pointers to how to decrease it through lifestyle changes., Comment: 13 pages, 2 figures, 2 tables
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- 2021
13. Development of an accessible 10-year Digital CArdioVAscular (DiCAVA) risk assessment: a UK Biobank study
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Dolezalova, Nikola, Reed, Angus B., Despotovic, Alex, Obika, Bernard Dillon, Morelli, Davide, Aral, Mert, and Plans, David
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Computer Science - Machine Learning - Abstract
Background: Cardiovascular diseases (CVDs) are among the leading causes of death worldwide. Predictive scores providing personalised risk of developing CVD are increasingly used in clinical practice. Most scores, however, utilise a homogenous set of features and require the presence of a physician. Objective: The aim was to develop a new risk model (DiCAVA) using statistical and machine learning techniques that could be applied in a remote setting. A secondary goal was to identify new patient-centric variables that could be incorporated into CVD risk assessments. Methods: Across 466,052 participants, Cox proportional hazards (CPH) and DeepSurv models were trained using 608 variables derived from the UK Biobank to investigate the 10-year risk of developing a CVD. Data-driven feature selection reduced the number of features to 47, after which reduced models were trained. Both models were compared to the Framingham score. Results: The reduced CPH model achieved a c-index of 0.7443, whereas DeepSurv achieved a c-index of 0.7446. Both CPH and DeepSurv were superior in determining the CVD risk compared to Framingham score. Minimal difference was observed when cholesterol and blood pressure were excluded from the models (CPH: 0.741, DeepSurv: 0.739). The models show very good calibration and discrimination on the test data. Conclusion: We developed a cardiovascular risk model that has very good predictive capacity and encompasses new variables. The score could be incorporated into clinical practice and utilised in a remote setting, without the need of including cholesterol. Future studies will focus on external validation across heterogeneous samples., Comment: 28 pages, 3 figures, 4 tables
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- 2021
14. Twenty‐five years of epilepsy surgery at a Central European comprehensive epilepsy center—Trends in intervention delay and outcomes
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Vít Všianský, Milan Brázdil, Ivan Rektor, Irena Doležalová, Jitka Kočvarová, Ondřej Strýček, Jan Hemza, Jan Chrastina, Eva Brichtová, Ondřej Horák, Patrícia Mužlayová, Markéta Hermanová, Michal Hendrych, and Martin Pail
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drug‐resistant epilepsy ,drug‐resistant epilepsy epidemiology ,drug‐resistant epilepsy surgery ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Objective We analyzed trends in patients' characteristics, outcomes, and waiting times over the last 25 years at our epilepsy surgery center situated in Central Europe to highlight possible areas of improvement in our care for patients with drug‐resistant epilepsy. Methods A total of 704 patients who underwent surgery at the Brno Epilepsy Center were included in the study, 71 of those were children. Patients were separated into three time periods, 1996‐2000 (n = 95), 2001‐2010 (n = 295) and 2011‐2022 (n = 314) based on first evaluation at the center. Results The average duration of epilepsy before surgery in adults remained high over the last 25 years (20.1 years from 1996 to 2000, 21.3 from 2001 to 2010, and 21.3 from 2011 to 2020, P = 0.718). There has been a decrease in rate of surgeries for temporal lobe epilepsy in the most recent time period (67%—70%—52%, P
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- 2023
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15. Case report: Susac syndrome—two ends of the spectrum, single center case reports and review of the literature
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Martina Cviková, Jakub Štefela, Vít Všianský, Michal Dufek, Irena Doležalová, Jan Vinklárek, Roman Herzig, Markéta Zemanová, Vladimír Červeňák, Jaroslav Brichta, Veronika Bárková, David Kouřil, Petr Aulický, Pavel Filip, and Viktor Weiss
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Susac syndrome ,vasculitis ,branch retinal arterial occlusion ,stroke ,neuroimmunology ,black blood imaging ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Susac syndrome is a rare and enigmatic complex neurological disorder primarily affecting small blood vessels in the brain, retina, and inner ear. Diagnosing Susac syndrome may be extremely challenging not only due to its rarity, but also due to the variability of its clinical presentation. This paper describes two vastly different cases—one with mild symptoms and good response to therapy, the other with severe, complicated course, relapses and long-term sequelae despite multiple therapeutic interventions. Building upon the available guidelines, we highlight the utility of black blood MRI in this disease and provide a comprehensive review of available clinical experience in clinical presentation, diagnosis and therapy of this disease. Despite its rarity, the awareness of Susac syndrome may be of uttermost importance since it ultimately is a treatable condition. If diagnosed in a timely manner, early intervention can substantially improve the outcomes of our patients.
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- 2024
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16. Distance from main arteries influences microstructural and functional brain tissue characteristics
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Viktor Weiss, Viktória Kokošová, Zdeněk Valenta, Irena Doležalová, Marek Baláž, Silvia Mangia, Shalom Michaeli, Lubomír Vojtíšek, Igor Nestrašil, Roman Herzig, and Pavel Filip
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Quantitative MRI ,Relaxometry ,Diffusion weighted imaging ,Resting-state functional MRI ,Arterial distance ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Given the substantial dependence of neurons on continuous supply of energy, the distribution of major cerebral arteries opens a question whether the distance from the main supply arteries constitutes a modulating factor for the microstructural and functional properties of brain tissue. To tackle this question, multimodal MRI acquisitions of 102 healthy volunteers over the full adult age span were utilised. Relaxation along a fictitious field in the rotating frame of rank n = 4 (RAFF4), adiabatic T1ρ, T2ρ, and intracellular volume fraction (fICVF) derived from diffusion-weighted imaging were implemented to quantify microstructural (cellularity, myelin density, iron concentration) tissue characteristics and degree centrality and fractional amplitude of low-frequency fluctuations to probe for functional metrics. Inverse correlation of arterial distance with robust homogeneity was detected for T1ρ, T2ρ and RAFF4 for cortical grey matter and white matter, showing substantial complex microstructural differences between brain tissue close and farther from main arterial trunks. Albeit with wider variability, functional metrics pointed to increased connectivity and neuronal activity in areas farther from main arteries. Surprisingly, multiple of these microstructural and functional distance-based gradients diminished with higher age, pointing to uniformization of brain tissue with ageing. All in all, this pilot study provides a novel insight on brain regionalisation based on artery distance, which merits further investigation to validate its biological underpinnings.
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- 2024
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17. Hausdorff measure of critical set for Luzin $N$ condition
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Doležalová, Anna, Hrubešová, Marika, and Roskovec, Tomáš
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Mathematics - Functional Analysis ,46E35 - Abstract
It is well-known that there is a Sobolev homeomorphism $f\in W^{1,p}([-1,1]^n,[-1,1]^n)$ for any $p
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- 2020
18. White matter alterations in MR-negative temporal and frontal lobe epilepsy using fixel-based analysis
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Bartoňová, Michaela, Tournier, Jacques-Donald, Bartoň, Marek, Říha, Pavel, Vojtíšek, Lubomír, Mareček, Radek, Doležalová, Irena, and Rektor, Ivan
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- 2023
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19. Weak Limit of Homeomorphisms in W1,n-1 and (INV) Condition
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Doležalová, Anna, Hencl, Stanislav, and Malý, Jan
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- 2023
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20. Practical applications of thermogravimetry in soil science: Part 5. Linking the microbial soil characteristics of grassland and arable soils to thermogravimetry data
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Doležalová-Weissmannová, Helena, Malý, Stanislav, Brtnický, Martin, Holátko, Jiří, Demyan, Michael Scott, Siewert, Christian, Tokarski, David, Kameníková, Eliška, and Kučerík, Jiří
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- 2023
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21. The First V4 Summer School in Economic History, Prague, 2023
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Antonie Doležalová
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Economic history ,V4 ,Summer School in Economic History ,Archaeology ,CC1-960 ,Ethnology. Social and cultural anthropology ,GN301-674 ,History of Central Europe ,DAW1001-1051 - Abstract
In the last week of August 2023 (27 Augustus – 2 September), the first V4 Summer School in Economic History was held in Prague. It was organized by the Institute of History of the Czech Academy of Sciences in cooperation with the Slovak Academy of Sciences, Bratislava, Eötvös Loránd University, Budapest, and the University of Warsaw. The event was financially supported by the Visegrad Fund. The long-term target of the Ph.D. Summer School in Economic History was to incorporate the V4 historiographies of economic history into international networks. It intended to encourage the young generation of economic historians to enter the international scene and participate in an open academic discussion.
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- 2023
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22. Rhyolite grinding-milling tools in focus
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Kristina Doležalová, Jaroslav Řídký, and Daniel Pilař
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grinding-milling tools ,raw material ,replica ,experimental use ,use-wear ,kinematics ,History of Central Europe ,DAW1001-1051 ,Ancient history ,D51-90 - Abstract
Past societies have used various raw materials for making grinding-milling tools (GMT). These included rhyolite, a hard volcanic rock with a porphyritic texture and pores, which is suitable for grinding. Thus far, no experiments have been carried out involving use-wear analysis on rhyolite grinding stones, and more specifically on Neolithic GMTs made of this raw material. Therefore, in this paper, we present an experimental program designed to investigate the development of wear from the grinding of einkorn wheat (Triticum monococcum) on rhyolite GMT replicas. To test the resulting observations, four GMTs found at the Neolithic site of Vchynice were used as a case study. However, the results of the experiments can be used to study these important artefacts in other geographic and cultural areas. The experiment has yielded several important findings relating to the kinematics of the tools and throws new light on their users. The orientation of the tool relative to the user can be distinguished based on the distribution of the use-wear traces. The study of the archaeological assemblage revealed that substances other than einkorn wheat, which was used for our experimental grinding, were processed on the Neolithic GMTs.
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- 2023
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23. On the volume of unit balls of finite-dimensional Lorentz spaces
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Doležalová, Anna and Vybíral, Jan
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Mathematics - Functional Analysis - Abstract
We study the volume of unit balls $B^n_{p,q}$ of finite-dimensional Lorentz sequence spaces $\ell_{p,q}^n.$ We give an iterative formula for ${\rm vol}(B^n_{p,q})$ for the weak Lebesgue spaces with $q=\infty$ and explicit formulas for $q=1$ and $q=\infty.$ We derive asymptotic results for the $n$-th root of ${\rm vol}(B^n_{p,q})$ and show that $[{\rm vol}(B^n_{p,q})]^{1/n}\approx n^{-1/p}$ for all $0
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- 2019
24. White matter alterations in MR-negative temporal and frontal lobe epilepsy using fixel-based analysis
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Michaela Bartoňová, Jacques-Donald Tournier, Marek Bartoň, Pavel Říha, Lubomír Vojtíšek, Radek Mareček, Irena Doležalová, and Ivan Rektor
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Medicine ,Science - Abstract
Abstract This study focuses on white matter alterations in pharmacoresistant epilepsy patients with no visible lesions in the temporal and frontal lobes on clinical MRI (i.e. MR-negative) with lesions confirmed by resective surgery. The aim of the study was to extend the knowledge about group-specific neuropathology in MR-negative epilepsy. We used the fixel-based analysis (FBA) that overcomes the limitations of traditional diffusion tensor image analysis, mainly within-voxel averaging of multiple crossing fibres. Group-wise comparisons of fixel parameters between healthy controls (N = 100) and: (1) frontal lobe epilepsy (FLE) patients (N = 9); (2) temporal lobe epilepsy (TLE) patients (N = 13) were performed. A significant decrease of the cross-section area of the fixels in the superior longitudinal fasciculus was observed in the FLE. Results in TLE reflected widespread atrophy of limbic, thalamic, and cortico-striatal connections and tracts directly connected to the temporal lobe (such as the anterior commissure, inferior fronto-occipital fasciculus, uncinate fasciculus, splenium of corpus callosum, and cingulum bundle). Alterations were also observed in extratemporal connections (brainstem connection, commissural fibres, and parts of the superior longitudinal fasciculus). To our knowledge, this is the first study to use an advanced FBA method not only on the datasets of MR-negative TLE patients, but also MR-negative FLE patients, uncovering new common tract-specific alterations on the group level.
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- 2023
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25. Problém redukce učiva ze zorného úhlu didaktiky českého jazyka a její historické zkušenosti
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Martina Šmejkalová, Jan Slavík, and Eliška Doležalová
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didaktika českého jazyka ,výuka českého jazyka ,redukce učiva ,historie výuky ,kurikulární reforma ,Education - Abstract
Článek je motivován aktuální potřebou teoreticky vykládat jeden z klíčových požadavků současnosti, a sice požadavek na výrazné snížení celkového objemu učiva a požadavek na definici jádrového a rozvíjejícího učiva. Prostřednictvím historické analýzy výuky českého jazyka se snaží přispět k objasňování obecných kontextů a příčin těchto chronicky opakovaných nároků. Dokládá, že redukce samy o sobě měly na kvalitu vzdělání v oblasti jazykové komunikace minimální dopad, a vybízí k uvážlivému a expertnímu postupu při současné kurikulární reformě.
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- 2023
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26. Proposals of guidance values for surface contamination by antineoplastic drugs based on long term monitoring in Czech and Slovak hospitals and pharmacies
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Lucie Bláhová, Luěek Bláha, Lenka Doležalová, Jan Kuta, and Tereza Hojdarová
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hazardous drugs ,surface contamination ,antineoplastic drugs ,monitoring ,technical guidance values ,Public aspects of medicine ,RA1-1270 - Abstract
IntroductionThe exposures to hazardous antineoplastic drugs (AD) represent serious risks for health care personnel but the exposure limits are not commonly established because of the no-threshold effects (genotoxic action, carcinogenicity) of many ADs. In this study, we discussed and derived practically applicable technical guidance values (TGV) suitable for management of AD risks.MethodsThe long-term monitoring of surface contamination by eight ADs was performed in pharmacies and hospitals in the Czech Republic and Slovak Republic in 2008–2021; in total 2,223 unique samples were collected repeatedly in 48 facilities. AD contamination was studied by LC-MS/MS for cyclophosphamide, ifosfamide, methotrexate, irinotecan, paclitaxel, 5-fluorouracil and gemcitabine and by ICP-MS for total Pt as a marker of platinum-based ADs.ResultsThe study highlighted importance of exposure biomarkers like 5-fluorouracil and especially carcinogenic and persistent cyclophosphamide, which should be by default included in monitoring along with other ADs. Highly contaminated spots like interiors of laminar biological safety cabinets represent a specific issue, where monitoring of contamination does not bring much added value, and prevention of staff and separated cleaning procedures should be priority. Rooms and surfaces in health care facilities that should be virtually free of ADs (e.g., offices, kitchenettes, daily rooms) were contaminated with lower frequency and concentrations but any contamination in these areas should be carefully examined.Discussion and conclusionsFor all other working places, i.e., majority of areas in pharmacies and hospitals, where ADs are being prepared, packaged, stored, transported, or administered to patients, the study proposes a generic TGV of 100 pg/cm2. The analysis of long-term monitoring data of multiple ADs showed that the exceedance of one TGV can serve as an indicator and trigger for improvement of working practices contributing thus to minimizing of unintended exposures and creating a safe work environment.
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- 2023
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27. Multimodal combination of neuroimaging methods for localizing the epileptogenic zone in MR-negative epilepsy
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Pavel Říha, Irena Doležalová, Radek Mareček, Martin Lamoš, Michaela Bartoňová, Martin Kojan, Michal Mikl, Martin Gajdoš, Lubomír Vojtíšek, Marek Bartoň, Ondřej Strýček, Martin Pail, Milan Brázdil, and Ivan Rektor
- Subjects
Medicine ,Science - Abstract
Abstract The objective was to determine the optimal combination of multimodal imaging methods (IMs) for localizing the epileptogenic zone (EZ) in patients with MR-negative drug-resistant epilepsy. Data from 25 patients with MR-negative focal epilepsy (age 30 ± 10 years, 16M/9F) who underwent surgical resection of the EZ and from 110 healthy controls (age 31 ± 9 years; 56M/54F) were used to evaluate IMs based on 3T MRI, FDG-PET, HD-EEG, and SPECT. Patients with successful outcomes and/or positive histological findings were evaluated. From 38 IMs calculated per patient, 13 methods were selected by evaluating the mutual similarity of the methods and the accuracy of the EZ localization. The best results in postsurgical patients for EZ localization were found for ictal/ interictal SPECT (SISCOM), FDG-PET, arterial spin labeling (ASL), functional regional homogeneity (ReHo), gray matter volume (GMV), cortical thickness, HD electrical source imaging (ESI-HD), amplitude of low-frequency fluctuation (ALFF), diffusion tensor imaging, and kurtosis imaging. Combining IMs provides the method with the most accurate EZ identification in MR-negative epilepsy. The PET, SISCOM, and selected MRI-post-processing techniques are useful for EZ localization for surgical tailoring.
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- 2022
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28. Levels and risks of surface contamination by thirteen antineoplastic drugs in the Czech and Slovak hospitals and pharmacies
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Doležalová, Lenka, Bláhová, Lucie, Kuta, Jan, Hojdarová, Tereza, Kozáková, Šárka, and Bláha, Luděk
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- 2022
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29. Left atrium phasic impairments in paroxysmal atrial fibrillation patients assessed by cardiovascular magnetic resonance feature tracking
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Mary Luz Mojica-Pisciotti, Roman Panovský, Lucia Masárová, Martin Pešl, Zdeněk Stárek, Tomáš Holeček, Věra Feitová, Lukáš Opatřil, Katarína Doležalová, and Vladimír Kincl
- Subjects
Medicine ,Science - Abstract
Abstract Atrial fibrillation (AF) is an abnormal and irregular heartbeat caused by uncoordinated electrical impulses in the left atrium (LA), which could induce lasting changes in the heart tissue or could be a consequence of underlying cardiac disease. This study aimed to assess the left atrial phasic function and deformation in paroxysmal AF (PAF) patients—who had not received radiofrequency ablation and had no signs of permanent AF—using the cardiovascular magnetic resonance (CMR) feature-tracking (FT) technique. Fifty subjects (27 PAF patients and 23 controls) were included and examined with CMR. Their LA volume, LA function, LA longitudinal strain (LS) and LA strain rate were assessed in the LA reservoir, conduit, and contractile phases. PAF patients exhibited higher LA volumes than controls, while their LA emptying fraction and LA LS was significantly lower in all three phases. In contrast, the corresponding emptying volumes (total, passive and active) were similar in both groups. The LA volumetric rates from CMR-derived volume curves differed significantly in PAF patients vs controls in the reservoir and contractile phases. In contrast, the equivalent LV volumetric rates were similar. This study suggests that assessing the LA phasic function could offer insight into early LA impairments for PAF patients.
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- 2022
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30. Left atrium phasic impairments in paroxysmal atrial fibrillation patients assessed by cardiovascular magnetic resonance feature tracking
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Mojica-Pisciotti, Mary Luz, Panovský, Roman, Masárová, Lucia, Pešl, Martin, Stárek, Zdeněk, Holeček, Tomáš, Feitová, Věra, Opatřil, Lukáš, Doležalová, Katarína, and Kincl, Vladimír
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- 2022
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31. Multimodal combination of neuroimaging methods for localizing the epileptogenic zone in MR-negative epilepsy
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Říha, Pavel, Doležalová, Irena, Mareček, Radek, Lamoš, Martin, Bartoňová, Michaela, Kojan, Martin, Mikl, Michal, Gajdoš, Martin, Vojtíšek, Lubomír, Bartoň, Marek, Strýček, Ondřej, Pail, Martin, Brázdil, Milan, and Rektor, Ivan
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- 2022
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32. The efficiency of antineoplastic drug contamination removal by widely used disinfectants–laboratory and hospital studies
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Bláhová, Lucie, Kuta, Jan, Doležalová, Lenka, Kozáková, Šárka, Krovová, Tereza, and Bláha, Luděk
- Published
- 2021
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33. Spectroscopy of close visual binary components of the stable shell star 1 Del
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Kubát, Jiří, Kubátová, Brankica, Doležalová, Barbora, Iliev, Lubomir, and Šlechta, Miroslav
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Astrophysics - Solar and Stellar Astrophysics - Abstract
Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its contribution toward the modelling of the disk cannot be overlooked, as is sometimes done. The study aims to spectroscopically resolve close visual binary Be (shell) star 1 Del, which up to now was only resolved by speckle or micrometric measurements. The integral field spectroscopy obtained by the SINFONI spectrograph at the VLT telescope in the European Southern Observatory (ESO) in the infrared region was used; we supplemented these observations with visual spectroscopy with the Perek Telescope at the Ondrejov Observatory. Spectra of 1 Del were successfully resolved, and, for the first time, spectra of 1 Del B were obtained. We found that 1 Del A is a Be/shell star, while 1 Del B is not an emission-line object., Comment: accepted to Astronomy And Astrophysics
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- 2016
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34. Subjective cognitive decline and &bgr;-amyloid burden predict cognitive change in healthy elderly
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Vogel, Jacob W, Varga Doležalová, Monika, La Joie, Renaud, Marks, Shawn M, Schwimmer, Henry D, Landau, Susan M, and Jagust, William J
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Mental Health ,Depression ,Acquired Cognitive Impairment ,Clinical Research ,Dementia ,Brain Disorders ,Biomedical Imaging ,Aging ,Behavioral and Social Science ,Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD) ,Neurodegenerative ,Neurosciences ,Alzheimer's Disease ,Mental health ,Aged ,Aged ,80 and over ,Amyloid beta-Peptides ,Analysis of Variance ,Aniline Compounds ,Brain ,Cognition Disorders ,Cohort Studies ,Female ,Geriatric Assessment ,Healthy Volunteers ,Humans ,Male ,Neuropsychological Tests ,Positron-Emission Tomography ,Psychiatric Status Rating Scales ,Thiazoles ,Clinical Sciences ,Cognitive Sciences ,Neurology & Neurosurgery - Abstract
ObjectiveTo assess in a longitudinal study whether subjective cognitive decline (SCD) and brain β-amyloid (Aβ) contribute unique information to cognitive decline.MethodsOne hundred thirty-six healthy elderly from the Berkeley Aging Cohort Study were followed up for a mean of 4 years. SCD and affective measures were generated from the Geriatric Depression Scale (GDS) with factor analysis on data from a larger set of 347 healthy, nondepressed (GDS
- Published
- 2017
35. Arterial Spin Labeling is a Useful MRI Method for Presurgical Evaluation in MRI-Negative Focal Epilepsy
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Kojan, Martin, Gajdoš, Martin, Říha, Pavel, Doležalová, Irena, Řehák, Zdeněk, and Rektor, Ivan
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- 2021
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36. Epileptogenic zone detection in MRI negative epilepsy using adaptive thresholding of arterial spin labeling data
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Martin Gajdoš, Pavel Říha, Martin Kojan, Irena Doležalová, Henk J. M. M. Mutsaerts, Jan Petr, and Ivan Rektor
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Medicine ,Science - Abstract
Abstract Drug-resistant epilepsy is a diagnostic and therapeutic challenge, mainly in patients with negative MRI findings. State-of-the-art imaging methods complement standard epilepsy protocols with new information and help epileptologists to increase the reliability of their decisions. In this study, we investigate whether arterial spin labeling (ASL) perfusion MRI can help localize the epileptogenic zone (EZ). To that end, we developed an image processing method to detect the EZ as an area with hypoperfusion relative to the contralateral unaffected side, using subject-specific thresholding of the asymmetry index in ASL images. We demonstrated three thresholding criteria (termed minimal product criterion, minimal distance criterion, and elbow criterion) on 29 patients with MRI-negative epilepsy (age 32.98 ± 10.4 years). The minimal product criterion showed optimal results in terms of positive predictive value (mean 0.12 in postoperative group and 0.22 in preoperative group) and true positive rate (mean 0.71 in postoperative group and 1.82 in preoperative group). Additionally, we found high accuracy in determining the EZ side (mean 0.86 in postoperative group and 0.73 in preoperative group out of 1.00). ASL can be easily incorporated into the standard presurgical MR protocol, and it provides an additional benefit in EZ localization.
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- 2021
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37. Genetic characterization of nodular worm infections in Asian Apes
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Erhan Yalcindag, Peter Stuart, Hideo Hasegawa, Adrian Streit, Jana Doležalová, Helen Morrogh-Bernard, Susan M. Cheyne, Wisnu Nurcahyo, and Ivona Foitová
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Medicine ,Science - Abstract
Abstract Parasitic nematodes of Oesophagostomum spp., commonly known, as 'nodular worms' are emerging as the most widely distributed and prevalent zoonotic nematodes. Oesophagostomum infections are well documented in African non-human primates; however, the taxonomy, distribution and transmission of Oesophagostomum in Asian non-human primates are not adequately studied. To better understand which Oesophagostomum species infect Asian non-human primates and determine their phylogeny we analysed 55 faecal samples from 50 orangutan and 5 gibbon individuals from Borneo and Sumatra. Both microscopy and molecular results revealed that semi-wild animals had higher Oesophagostomum infection prevalence than free ranging animals. Based on sequence genotyping analysis targeting the Internal transcribed spacer 2 of rDNA, we report for the first time the presence of O. aculeatum in Sumatran apes. Population genetic analysis shows that there is significant genetic differentiation between Bornean and Sumatran O. aculeatum populations. Our results clearly reveal that O. aculeatum in free-ranging animals have a higher genetic variation than those in semi-wild animals, demonstrating that O. aculeatum is circulating naturally in wildlife and zoonotic transmission is possible. Further studies should be conducted to better understand the epidemiology and dynamics of Oesophagostomum transmission between humans, non-human primates and other wild species and livestock in Southeast Asia.
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- 2021
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38. Associations in Late Medieval Art of Memory (example of the Czech lands)
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Lucie Doležalová
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art of memory ,associations ,medieval Bohemia ,medieval manuscripts ,medieval Latin ,rhetoric ,History of the Greco-Roman World ,DE1-100 ,Greek language and literature. Latin language and literature ,PA - Abstract
Using two late medieval treatises from Bohemia as examples, the study presents various ways of creating images in the context of the art of memory, showing a tension between relying on common, generally shared associations which the mind easily interprets, and using rare, personal connections which are imprinted in one’s mind more deeply. The tension remains unresolved: both methods are applied in the art of memory, the actual choice seems to be ad hoc. Both types of associations provide a unique and so far neglected insight into the medieval mind.
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- 2022
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39. Selectivity and efficacy of herbicides dimethachlor and pethoxamid in rocket crop
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Ivana Doležalová, Irena Petrželová, and Martin Duchoslav
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eruca vesicaria (l.) cav. ,maximum residue levels (mrls) ,phytotoxicity ,weed control ,Plant culture ,SB1-1110 - Abstract
Field experiments were conducted to evaluate the efficacy, selectivity and health harmlessness of four application rates of two pre-emergent herbicides (pethoxamid and dimethachlor) in the rocket [Eruca vesicaria (L.) Cavanilles)]. Pethoxamid was found to be less efficient on the total weed density (efficacy 86.0-93.3%) in comparison with the effect of dimethachlor (94.9-95.8%). Dimethachlor expressed an excellent efficacy on Echinochloa crus-galli (L.) P. Beauvois, Portulaca oleracea Linnaeus, Amaranthus retroflexus Linnaeus, Lamium purpureum Linnaeus, and Veronica persica Poiret from the lowest tested application rate (800 g/ha). Pethoxamid showed an excellent efficacy on E. crus-galli, Lamium purpureum, Lamium amplexicaule Linnaeus, V. persica, and P. oleracea. In higher application rates, pethoxamid controlled Chenopodium polyspermum Linnaeus and Chenopodium album Linnaeus. In contrast to mostly negative effects of dimethachlor, pethoxamid showed either no effects or positive ones on the rocket yield. Residues of both herbicides in the harvested product were always below a 'default limit', which is the baseline maximum residue level for food. The selectivity of pethoxamid at an application rate of 960 g/ha was good, herbicide residues in the rocket were not detected and the yield of the rocket increased.
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- 2020
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40. Pains and Pleasures of Interpreting and Appropriating Obscurity: The Versus maligni angeli in the Twelfth to Fifteenth Centuries
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Lucie Doležalová
- Subjects
medieval manuscript culture ,medieval obscurity ,medieval latin ,textual transmission ,medieval interpretation ,medieval literature ,Philology. Linguistics ,P1-1091 - Abstract
The study addresses the subject of methods and character of medieval text transmission and interpretation through a case study of a brief obscure poem sometimes entitled Versus maligni angeli. While its origin is not known, it provoked four different detailed interpretations. All the commentators explain its meaning as Christian one but radically differ in the specific interpretations. They also justify the supposed devil’s authorship of the poem in very different ways. They apply traditional strategies of Biblical exegesis to this idiosyncratic source. Although it is a mere opuscule, this case shows medieval exegetical flexibility as well as curiosity inherent in perceiving the created world. List of surviving manuscript copies of the verses as well as editions of two of the glossed versions are provided in appendices.
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- 2020
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41. Lipreading and its role in individual speech therapy intervention and education of individuals with hearing impairment
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Lenka Doležalová
- Subjects
hearing impairment ,communication of persons with hearing impairment ,functional communication ,czech language ,lipreading ,visualisation of spoken language ,supporting articulation signs ,Medicine ,Oral communication. Speech ,P95-95.6 - Abstract
Lipreading is one of the communication systems of people with hearing impairment. We encounter it when communicating with individuals with hearing impairments from an early age to old age, regardless of the type of hearing impairment or compensatory aid that the individual uses. The difference is in the degree of usage and understanding that results from the individual needs and capabilities of each person. Lipreading is a very demanding mental activity. Not every individual with a hea-ring impairment can lip-read or is able to learn to lip-read. However, its successful acquisition can play a major role in speech comprehension, education and everyday life.
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- 2020
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42. 137Cs activity concentration in mushrooms from the Bobrůvka river valley
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Petr Dvořák, Jana Doležalová, Katarína Beňová, and Martin Tomko
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radiocaesium ,mushrooms ,river valley ,boletus ,imleria ,Nutrition. Foods and food supply ,TX341-641 - Abstract
In the 2017-2018 mushrooming seasons at the (Bohemian-Moravian Highlands near Dolní Rožínka) a total of 505 mushrooms belonging to 9 species were collected, and analyzed by gamma spectrometry for 137Cs activity. The maximum 137Cs activity of 575 Bq.kg-1 was detected in Boletus edulis species, what in native state, is just below the allowed limit. In contrast, in mushroom Imleria badia, which is reported to be associated with the highest cumulative capability from all fungi species, detected activity level was only 316 Bq. kg-1. However, differences in mean contamination values were not significant due to high variability. It was shown, that activity concentration is not dependent on the weight (size) of Imleria badia. Our results also confirmed generally well known lower 137Cs activity in the Russula species representatives belonging to the group of gills or lamella bearing mushrooms.
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- 2020
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43. Anakinra in Paediatric Rheumatology and Periodic Fever Clinics: Is the Higher Dose Safe?
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Šárka Fingerhutová, Eva Jančová, and Pavla Doležalová
- Subjects
anakinra ,safety ,off-label anakinra ,systemic juvenile arthritis ,macrophage activation syndrome ,autoinflammatory diseases (AID) ,Pediatrics ,RJ1-570 - Abstract
ObjectiveAnakinra has been increasingly used in off-label indications as well as dosing and mode of administration in a variety of inflammatory conditions. We aimed to review our clinical practice and compare treatment outcomes with published data.MethodsClinical data from electronic records were retrospectively reviewed for patients treated with anakinra over the past 6 years for autoinflammatory diseases (AID).ResultsFrom 47 eligible patients (27 female patients), 32 were children. Macrophage activation syndrome (MAS) was the indication for anakinra therapy in 42.6% of patients. Systemic juvenile idiopathic arthritis (SJIA) was the most common underlying diagnosis (19/47) followed by the spectrum of AID. Off-label use was noted in 38.3% patients. Recommended dose was exceeded in 21 children (mean induction dose 5.1, highest dose 29.4 mg/kg/day) and two adults; five patients were treated intravenously. The mean treatment duration for SJIA was 1.4 years, that for AID was 2.2 years, and that for patients with higher anakinra dose was 9.7 (19.3) months. The mean follow-up duration was 2.7 (1.7) years. Treatment was effective in the majority of SJIA and cryopyrinopathy patients as well as those with MAS. Anakinra was well-tolerated without any major adverse effects even in patients with long-term administration of higher than recommended doses including two infants treated with a dose of over 20 mg/kg/day.ConclusionOur results support early use of anakinra in the individually tailored dosing. In patients with hyperinflammation, anakinra may be lifesaving and may even allow for corticosteroid avoidance. Further studies are needed in order to set up generally accepted response parameters and define condition-specific optimal dosing regimen.
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- 2022
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44. Karyotype Differentiation in Cultivated Chickpea Revealed by Oligopainting Fluorescence in situ Hybridization
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Alžběta Doležalová, Lucia Sládeková, Denisa Šimoníková, Kateřina Holušová, Miroslava Karafiátová, Rajeev K. Varshney, Jaroslav Doležel, and Eva Hřibová
- Subjects
Cicer arietinum L. ,kabuli type ,desi type ,oligopainting FISH ,chromosome identification ,chromosome translocation ,Plant culture ,SB1-1110 - Abstract
Chickpea (Cicer arietinum L.) is one of the main sources of plant proteins in the Indian subcontinent and West Asia, where two different morphotypes, desi and kabuli, are grown. Despite the progress in genome mapping and sequencing, the knowledge of the chickpea genome at the chromosomal level, including the long-range molecular chromosome organization, is limited. Earlier cytogenetic studies in chickpea suffered from a limited number of cytogenetic landmarks and did not permit to identify individual chromosomes in the metaphase spreads or to anchor pseudomolecules to chromosomes in situ. In this study, we developed a system for fast molecular karyotyping for both morphotypes of cultivated chickpea. We demonstrate that even draft genome sequences are adequate to develop oligo-fluorescence in situ hybridization (FISH) barcodes for the identification of chromosomes and comparative analysis among closely related chickpea genotypes. Our results show the potential of oligo-FISH barcoding for the identification of structural changes in chromosomes, which accompanied genome diversification among chickpea cultivars. Moreover, oligo-FISH barcoding in chickpea pointed out some problematic, most probably wrongly assembled regions of the pseudomolecules of both kabuli and desi reference genomes. Thus, oligo-FISH appears as a powerful tool not only for comparative karyotyping but also for the validation of genome assemblies.
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- 2022
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45. Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce
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Sanja Ćavar Zeljković, Nikola Štefelová, Karel Hron, Ivana Doležalová, and Petr Tarkowski
- Subjects
lettuce ,salt stress ,drought stress ,nutritional value ,compositional tables ,Agriculture - Abstract
Lettuce (Lactuca sativa L.) is one of the most consumed leafy green vegetables in the world, and is a good source of important bioactive compounds. However, environmental stress factors, such as salinity or drought, cause physiological and biochemical changes in plants and influence the yields and levels of both primary and secondary metabolites, which drastically changes the nutritional value and quality of the crop. In the present work, six typical Czech cultivars/landraces of various lettuce morphotypes (Altenbursky, Dubacek, Kamenac, Jupiter, Prazan, and Robin) were grown under driven conditions and then analyzed for the content of sugars, fatty acids, amino acids, phenolics, and vitamins. Obtained data were subjected to compositional tables statistical analysis, which provided not only information on general trends in the changes in their nutritional value but also how these changes affected each particular variety. Overall, drought caused the largest relative increase in phenolic compounds and some amino acids. Conversely, drought caused overall the largest relative decrease in vitamin C, but also in fatty acids. In addition, salt stress caused a larger decrease in many metabolites, especially the amino acid arginine, while fatty acids were only slightly increased, together with vitamin E. In addition, the interpretation of data from statistical analysis showed that varieties Prazan and Altenbursky had the least changes in their chemical composition when subjected to drought stress. Again, var. Altenbursky showed the least variability in comparison to other varieties when subjected to salt stress. These findings confirm the fact that landraces and old cultivars do not change their chemical profiles significantly, as is the case for improved cultivars, and they emphasize the need for their cultivation when raising the productivity of staple food crops.
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- 2023
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46. Fooled twice: People cannot detect deepfakes but think they can
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Nils C. Köbis, Barbora Doležalová, and Ivan Soraperra
- Subjects
Neuroscience ,Behavioral neuroscience ,Cognitive neuroscience ,Artificial intelligence ,Artificial intelligence applications ,Social sciences ,Science - Abstract
Summary: Hyper-realistic manipulations of audio-visual content, i.e., deepfakes, present new challenges for establishing the veracity of online content. Research on the human impact of deepfakes remains sparse. In a pre-registered behavioral experiment (N = 210), we show that (1) people cannot reliably detect deepfakes and (2) neither raising awareness nor introducing financial incentives improves their detection accuracy. Zeroing in on the underlying cognitive processes, we find that (3) people are biased toward mistaking deepfakes as authentic videos (rather than vice versa) and (4) they overestimate their own detection abilities. Together, these results suggest that people adopt a “seeing-is-believing” heuristic for deepfake detection while being overconfident in their (low) detection abilities. The combination renders people particularly susceptible to be influenced by deepfake content.
- Published
- 2021
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47. Epileptogenic zone detection in MRI negative epilepsy using adaptive thresholding of arterial spin labeling data
- Author
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Gajdoš, Martin, Říha, Pavel, Kojan, Martin, Doležalová, Irena, Mutsaerts, Henk J. M. M., Petr, Jan, and Rektor, Ivan
- Published
- 2021
- Full Text
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48. Genetic characterization of nodular worm infections in Asian Apes
- Author
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Yalcindag, Erhan, Stuart, Peter, Hasegawa, Hideo, Streit, Adrian, Doležalová, Jana, Morrogh-Bernard, Helen, Cheyne, Susan M., Nurcahyo, Wisnu, and Foitová, Ivona
- Published
- 2021
- Full Text
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49. Levels and risks of antineoplastic drugs in households of oncology patients, hospices and retirement homes
- Author
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Bláhová, Lucie, Kuta, Jan, Doležalová, Lenka, Kozáková, Šárka, Hojdarová, Tereza, and Bláha, Luděk
- Published
- 2021
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50. Relationship between Patient Preferences, Attitudes to Treatment, Adherence, and Quality of Life in New Users of Teriflunomide
- Author
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Daniela Štrosová, Jan Tužil, Barbora Velacková Turková, Barbora Filková Pilnáčková, Lada Lžičařová de Souza, Helena Doležalová, Michaela Rašková, Michal Dufek, and Tomáš Doležal
- Subjects
multiple sclerosis ,teriflunomide ,adherence ,quality of life ,MMAS-8 ,BMQ ,Medicine ,Pharmacy and materia medica ,RS1-441 - Abstract
Background: A poor patient adherence often limits the real-world effectiveness of an oral disease-modifying therapy (DMT) for multiple sclerosis (MS). In the present study, we aimed to map patient preferences, attitudes toward treatment, and quality of life to identify the predictors of non-adherence to teriflunomide. Methods: This was a single-arm, non-interventional, multicenter study (Czech Act 378/2007 Coll.) consisting of three visits: the first at treatment initiation (teriflunomide 14 mg), and then after 3 and 9 months of therapy. We enrolled both DMT-naïve and patients who had undergone a DMT diagnosed with a clinically isolated syndrome (CIS) or relapsing-remitting multiple sclerosis (RRMS). The functional status and MS activity were estimated using the Expanded Disability Status Scale (EDSS) and annualized relapse rate (ARR); the quality of life via the Multiple Sclerosis Impact Scale (MSIS-29); the medication adherence with the Morisky Medication Adherence Scale (MMAS-8); the confidence in the ability to take medications by the Self-Efficacy for Appropriate Medication Score (SEAMS); and the attitude to the therapy via the Beliefs about Medicines Questionnaire (BMQ). After nine months of therapy, we predicted the adherence to teriflunomide (MMAS-8) by fitting a multivariate ordinal logistic model with EDSS changes, gender, previous DMT, MSIS-29, BMQ, and SEAMS as the explanatory variables. Results: Between 2018 and 2019, 114 patients were enrolled at 10 sites in the Czech Republic. The mean age was 41.2 years, 64.8% were diagnosed with a CIS, 52.4% were DMT-naïve, and 98.1% of patients preferred an oral administration at the baseline. The mean EDSS baseline was 1.97 and remained constant during the 9 months of therapy. The ARR baseline was 0.72 and dropped to 0.19 and 0.15 after 3 and 9 months, respectively. Despite a more than 4-fold higher ARR baseline, the treatment-naïve patients achieved an ARR at 9 months comparable with those previously treated. There were ten non-serious adverse reactions. After nine months of teriflunomide therapy, 63.3%, 21.2%, and 15.4% of patients had a high, medium, and low adherence, respectively, as per the MMAS-8; 100% of patients preferred an oral administration. The SEAMS score (odds ratio (OR) = 0.91; p = 0.013) and previous DMT (OR = 4.28; p = 0.005) were the only significant predictors of non-adherence. The disability, the quality of life, and beliefs about medicines had no measurable effect on adherence. Conclusion: After nine months of teriflunomide therapy, both the disability and quality of life remained stable; the relapse rate significantly decreased, 63.3% of patients had a high adherence, and 100% of patients preferred an oral administration. A low adherence was associated with previous DMT experiences and a low self-efficacy for the appropriate medication (i.e., the confidence in one’s ability to take medication correctly).
- Published
- 2022
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