342 results on '"Korczak P"'
Search Results
2. The Effect of Screen Time and Positive School Factors in the Pathway to Child and Youth Mental Health Outcomes
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Tsujimoto, Kimberley C., Anagnostou, Evdokia, Birken, Catherine S., Charach, Alice, Cost, Katherine Tombeau, Kelley, Elizabeth, Monga, Suneeta, Nicolson, Rob, Georgiades, Stelios, Lee, Nicole, Osokin, Konstantin, Burton, Christie L., Crosbie, Jennifer, and Korczak, Daphne J.
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- 2024
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3. Availability to predators and a size structure of the Antarctic krill Euphausia superba in the 48.1 CCAMLR subarea
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Anna Panasiuk, Gabriela Gic-Grusza, and Małgorzata Korczak-Abshire
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Antarctic krill ,Pygoscelis penguins ,Western Antarctic ,Predator diet ,Commercial fishery ,Krill fishery management ,Medicine ,Science - Abstract
Abstract The Antarctic krill Euphausia superba is a key species in Antarctic waters, mainly because it is a major component of the diet of dominant predators, including penguins. It is also a marine living resource that is commercially harvested. Since 2000, krill fishing has become more concentrated. On the basis of several years of data, it has been reported that up to 57% of the krill fishery harvests occur in the Bransfield Strait area. The distribution of krill in the Southern Ocean is not well described. Studies that compare the size of krill caught by commercial vessels with that recorded in the diet of predators are even rarer. The main objectives of this study were to assess the spatial diversity in the size and putative age of krill in the CCAMLR subarea 48.1, to investigate the spatial availability of krill and its size and age structure, and to assess whether the diet of Pygoscelis penguins reflects the size structure of krill present in the environment. The results implied that the size and age structure of the krill population were similar throughout the Bransfield Strait during the study period, although those in the eastern and southern parts of the strait and the Brabant Island region were the most similar. The Livingston Island and Drake Passage areas were clearly distinguishable from the above regions, where larger and therefore older krill were recorded. All Pygoscelis penguin species showed size preferences for consumed krill; therefore, their diet is likely not a reliable indicator of the size of krill in the environment. Krill that had not yet reached sexual maturity, and thus not yet started reproducing were commercially caught in the Bransfield Strait during the investigated years.
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- 2024
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4. Studies of the AA2519 Alloy Hot Rolling Process and Cladding with EN AW-1050A Alloy
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Płonka B., Rajda M., Zamkotowicz Z., Żelechowski J., Remsak K., Korczak P., Szymański W., and Snieżek L.
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Al alloys ,rolling ,cladding ,mechanical properties ,structure ,Mining engineering. Metallurgy ,TN1-997 ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
The objective of the study was to determine the feasibility of plastic forming by hot rolling of the AA2519 aluminium alloy sheets and cladding these sheets with a layer of the EN AW-1050A alloy. Numerous hot-rolling tests were carried out on the slab ingots to define the parameters of the AA2519 alloy rolling process. It has been established that rolling of the AA2519 alloy should be carried out in the temperature range of 400-440°C. Depending on the required final thickness of the sheet metal, appropriate thickness of the EN AW-1050A alloy sheet, used as a cladding layer, was selected. As a next step, structure and mechanical properties of the resulting AA2519 alloy sheets clad with EN AW-1050A alloy was examined. The thickness of the coating layer was established at 0,3÷0,5mm. Studies covered alloy grain size and the core alloy-cladding material bond strength.
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- 2016
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5. Research on Extruded Products of Mgalzn Alloys – Microstructure and Mechanical Properties / Badania Wyrobów Wyciskanych Ze Stopów Mgalzn – Mikrostruktura I Właściwości Mechaniczne
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Płonka B., Remsak K., Korczak P., Lech-Grega M., and Rajda M.
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magnesium alloy ,extrusion ,mechanical properties ,structure ,Mining engineering. Metallurgy ,TN1-997 ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
The aim of the study was to test and assess products extruded from the magnesium alloys type MgAlZn: AZ31, AZ61 and AZ80A alloys in the form of Ø35mm round bars and 80x15mm flat bars. The test material was extruded in a direct system with the ram feed speed of 1 mm/s and the extrusion ratio λ = 7 ÷ 9. The extruded bars were examined in as-extruded state and after heat treatment to the T5 temper and T6 temper. The strength properties were tested and microstructure was examined with calculation of the average grain size.
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- 2015
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6. Availability to predators and a size structure of the Antarctic krill Euphausia superba in the 48.1 CCAMLR subarea
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Panasiuk, Anna, Gic-Grusza, Gabriela, and Korczak-Abshire, Małgorzata
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- 2024
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7. Evaluation of an automated matching system of children and families to virtual mental health resources during COVID-19
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Lo, Ronda F, Schumacher, Anett, LaForge-Mackenzie, Kaitlyn, Cost, Katherine Tombeau, Crosbie, Jennifer, Charach, Alice, Anagnostou, Evdokia, Birken, Catherine S., Monga, Suneeta, and Korczak, Daphne J.
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- 2024
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8. Formation of Structure and Properties in Casting Processes on the Example of AZ91 Magnesium Alloy
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Augustyn B., Szymanek M., Kapinos D., Boczkal S., and Korczak P.
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Innovative foundry technologies and materials ,Magnesium alloy ,RS process ,VDC process ,Mechanical properties ,Technology (General) ,T1-995 - Abstract
Contemporary materials engineering requires the use of materials characterised by high mechanical properties, as these precisely properties determine the choice of material for parts of machinery and equipment. Owing to these properties it is possible to reduce the weight and, consequently, the consumption of both material and energy. Trying to meet these expectations, the designers are increasingly looking for solutions in the application of magnesium alloys as materials offering a very beneficial strength-to-weight ratio. However, besides alloying elements, the properties are to a great extent shaped by the solidification conditions and related structure. The process of structure formation depends on the choice of casting method forced by the specific properties of casting or by the specific intended use of final product. The article presents a comparison of AZ91 magnesium alloys processed by different casting technologies. A short characteristic was offered for materials processed by the traditional semi-continuous casting process, which uses the solidification rates comprised in a range of 5 - 20°C/s, and for materials made in the process of Rapid Solidification, where the solidification rate can reach 106 °C/s. As a result of the casting process, a feedstock in the form of billets and thin strips was obtained and was subjected next to the process of plastic forming. The article presents the results of structural analysis of the final product. The mechanical properties of the ø7 mm extruded rods were also evaluated and compared.
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- 2014
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9. Longevity of Polish top-class athletes compared to other social elites and well-known people in the years 2001–2021
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Witold Śmigielski, Łukasz Małek, Magdalena Kwaśniewska, Robert Gajda, Katarzyna Pawlak-Sobczak, Karol Korczak, Alicja Cicha-Mikołajczyk, Aleksandra Piwońska, Jerzy Piwoński, Janusz Śmigielski, and Wojciech Drygas
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poland ,lifespan ,athletes ,longevity ,premature mortality ,elites ,Medicine - Abstract
Objectives The aim of this work is to initiate or revive a scientific discussion on the impact of professional life on the parameters of human lifespan. Material and Methods Presented analysis is based on 8578 Polish elite or well-known person who died in 2001–2021. Results The results of the conducted analysis indicate that in the case of men the highest values of the median age at death were characteristic of freelancers (median [Me] ± quartile deviation [QD] 85.5±8.5 years), followed by scientists and academic teachers of the biological and medical specialty (Me±QD 84.0±7.5 years) and officers of power structures (Me±QD 83.5±8.5 years). Subsequently, the highest value of the median age at death was recorded for social activists (Me±QD 83.0±9.5 years), clergy (Me±QD 82.0±7.5 years) and scientists and academic teachers of specialties other than biological and medical (Me±QD 82.0±8.0 years). Significantly, at the very end of this list are athletes (Me±QD 77.0±9.0 years). Nevertheless, the results of the analysis confirm that professional athletes are characterized by higher median age at death compared to the general population. Analysis made only within athletes group demonstrated that the parameters of lifespan of athletes of endurance disciplines (Me±QD 78.0±8.0 years) are the most favorable compared to athletes of other disciplines, in particular in compare to team sports athletes (Me±QD 75.0±10.0 years) or combat sports athletes (Me±QD 75.0±7.1 years). Conclusions What is new and innovative in this paper is comparing the lifespan characteristics of athletes in comparison to widely represented group of other professions with higher socio-economic status. Unexpectedly, the lifespan of athletes occurred to be lower than for fast all other analyzed occupational groups, except mainly of entertainment musicians. Finally, the results presented in this paper emphasize the need to analyze the lifespan characteristics of athletes in a broader scope than only in relation to the general population. Int J Occup Med Environ Health 2024;37(3):335–50
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- 2024
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10. Numerical modeling of tissue laser irradiation with uncertain parameters using the interval finite pointset method
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Anna Korczak
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Applied mathematics. Quantitative methods ,T57-57.97 - Published
- 2024
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11. Thermal energy storage performance of liquid polyethylene glycol in core–shell polycarbonate and reduced graphene oxide fibers
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Das, Madhurima, Ura, Daniel P., Szewczyk, Piotr K., Berniak, Krzysztof, Knapczyk-Korczak, Joanna, Marzec, Mateusz M., Pichór, Waldemar, and Stachewicz, Urszula
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- 2024
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12. In vitro evaluation of tigecycline synergy testing with nine antimicrobial agents against Enterobacter cloacae clinical strains
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Lukasz Korczak, Piotr Majewski, Krzysztof Rombel, Dominika Iwaniuk, Pawel Sacha, Mateusz Modzelewski, and Elzbieta Tryniszewska
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Enterobacter cloacae ,E-test method ,multidrug-resistant ,synergy testing ,tigecycline ,Microbiology ,QR1-502 - Abstract
Enterobacterales (especially carbapenem-resistant) are considered an urgent threat to public health. The available antibiotic therapy is limited due to the increase of multidrug-resistant (MDR) strains. Tigecycline, a minocycline derivative, has emerged as a potential key agent in the treatment of MDR isolates. The aim of the study was to evaluate the synergistic effect of tigecycline in combination with nine antimicrobial agents—ceftazidime/avibactam, colistin, ertapenem, gentamicin, imipenem, levofloxacin, meropenem/vaborbactam, polymyxin B, and rifampicin. Eighty clinical Enterobacter cloacae strains were obtained from patients of two University Hospitals in Bialystok, Poland. The E-test method was used to determine synergistic interactions. Among all combinations, synergy was reported in 61% of cases, addition in 32%, and indifference in 7%. The highest synergy rates were observed in tigecycline combinations with: ceftazidime/avibactam (60/80; 75%), imipenem (60/80; 75%), polymyxin B (55/80; 68.75%) and rifampicin (55/80; 68.75%), while the lowest synergy rate was noted in tigecycline-levofloxacin (26/80; 32.5%). The tigecycline-gentamicin showed the highest rate of indifference; antagonism, was not observed in any combination. In conclusion, tigecycline appears more suitable for use in combination therapy rather than as monotherapy and can be effectively paired with various antimicrobial agents against MDR E. cloacae. Further research will be necessary to confirm these results.
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- 2024
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13. Flexible and Thermally Insulating Porous Materials Utilizing Hollow Double‐Shell Polymer Fibers
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Joanna Knapczyk‐Korczak, Piotr K. Szewczyk, Krzysztof Berniak, Mateusz M. Marzec, Maksymilian Frąc, Waldemar Pichór, and Urszula Stachewicz
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double‐shell ,electrospinning ,fibers ,mechanical properties ,PS ,thermal insulation ,Science - Abstract
Abstract The global climate change is mainly caused by carbon dioxide (CO2) emissions. To help reduce CO2 emissions and conserve thermal energy, sustainable materials based on flexible thermal insulation are developed to minimize heat flux, drawing inspiration from natural systems such as polar bear hairs. The unique structure of hollow double‐shell fibers makes it possible to achieve low thermal conductivity in the material while retaining exceptional elasticity, allowing it to adapt to insulation systems of any shape. The layered system of porous mats reaches a thermal conductivity coefficient of 0.031 W∙m⁻¹∙K⁻¹ and enables to reduce the heat transfer. The results achieved using scanning thermal microscopy (SThM) correlate with the simulated heat flow in the case of individual fibers. This research study brings new insights into the energy efficiency of domestic environments, thereby addressing the growing demand for sustainable and high‐performance insulation materials for saving energy loss and reducing pollution footprint.
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- 2024
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14. Socioeconomic determinants of very frequent presentations to emergency departments in New South Wales, Australia: A state wide data linkage study
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Viola Korczak, Radhika Seimon, Kendall Bein, Stephen Jan, Thomas Lung, and Michael Dinh
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Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Objectives: To describe the clinical and longitudinal patterns of presentation, and to understand the underlying socioeconomic characteristics of different modes of presentation. Design: Retrospective state-wide data linkage analysis of emergency department (ED) presentations. Patients were included if they were 18 years of age or over and presented to the ED over twenty times within any consecutive 365-day period between January 2015 and December 2020. This analysis used routinely collected data from the Emergency Department Data Collection and Admitted Patient Data Collection. The quintile of Socioeconomic Indexes for Area (SEIFA) defined by Australian Bureau of Statistics was used for equity considerations. Main outcome measures: The main outcomes of interest included patients’ clinical presentation, demographic information and SEIFA score as represented by Index of Relative Socioeconomic Advantage and Disadvantage (IRSAD) quintiles. Results: There were 417,154 presentations and 5,244 patients who met the inclusion criteria. The majority of the presentations were from SEIFA groups 1 (28.2 %) and 2 (35.6 %). The most common presentations were for drug and alcohol (17.5 %), followed by abdominal pathology (11.8 %) and mental health (11.5 %). In the lowest SEIFA group, the main presenting complaints were for drug and alcohol and administrative presentations. While in the highest SEIFA group, the main presentations were for mental health then abdominal pain, followed by drug and alcohol presentations. Conclusion: Patients in the lower SEIFA groups tended to be older with lower acuity presentations and were more likely to present to the same facility, more regularly. Patients in the lower SEIFA group were also more likely to present with drug and alcohol and administrative presentations while those in the higher SEIFA groups were more likely to present with mental health presentations. System wide interventions are needed to address the needs of both groups, particularly those from lower socioeconomic backgrounds, who would benefit from improved access to primary care either through access to General Practice or Urgent Care Centres.
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- 2024
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15. School and learning contexts during the COVID-19 pandemic: Implications for child and youth mental health
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Tsujimoto, Kimberley C., Cost, Katherine Tombeau, LaForge-MacKenzie, Kaitlyn, Anagnostou, Evdokia, Birken, Catherine S., Charach, Alice, Monga, Suneeta, Kelly, Elizabeth, Nicolson, Rob, Georgiadis, Stelios, Lee, Nicole, Osokin, Konstantin, Arnold, Paul, Schachar, Russell, Burton, Christie, Crosbie, Jennifer, and Korczak, Daphne J.
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- 2023
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16. Serum level of osteoprotegerin in patients with Parkinson’s disease: a preliminary study
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Marta Piaścik-Gromada, Katarzyna Bocian, Grażyna Korczak-Kowalska, Marta Leńska-Mieciek, Urszula Fiszer, and Małgorzata Michałowska
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stroke ,parkinson’s disease ,osteoprotegerin ,cholesterol ,Medicine - Published
- 2024
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17. Caster Car – underactuated ground vehicle with caster wheels
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Sebastian Korczak
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underactuated system ,caster wheel ,computed torque technique ,pseudoinverse ,Information technology ,T58.5-58.64 ,Mathematics ,QA1-939 - Abstract
This paper presents a new type of underactuated ground mobile robot called Caster Car. The platform consists of a front-driven and steered wheel and two uncontrolled rear caster wheels. The Caster Car model presented can be an interesting alternative for mobile robots that connects dynamic properties of hovercrafts and classical 4-wheeled cars. Underactuated properties of the Caster Car cause that classical proportional-derivative feedback control give the ability to affect only selected configuration variables. Three mathematical models of the Caster Car are proposed: a dynamic model with free-moving casters, a dynamic model with blocked casters, and a simplified hovercraft description. Models were tested during tracking tasks with demanding trajectory using selective and full-state control. This full state control was based on the computed torque technique with the pseudoinverse operation and proportional-derivative feedback. It gives the ability to suppress unstable behaviors of uncontrolled orientation but in cost of overall effect (higher position errors).
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- 2024
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18. Inflammation Factors and Genistein Supplementation in Cancer—Preliminary Research
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Karolina Banyś, Małgorzata Jelińska, Małgorzata Wrzosek, Dorota Skrajnowska, Robert Wrzesień, Wojciech Bielecki, and Barbara Bobrowska-Korczak
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genistein ,cancer ,nanoparticles ,Biology (General) ,QH301-705.5 - Abstract
The purpose of this study was to evaluate the effect of genistein in nano, micro, and macro forms on the intensity of the DMBA-induced tumor process in rats and to understand the mechanisms of this action. The effect of genistein supplementation on the content of selected eicosanoids (HETEs, HODE, and HEPE) in the serum of rats was evaluated. The levels and expression of genes encoding various pro-inflammatory cytokines (IL-1, IL-6) and MMP-9 in the blood of rats were also investigated. The biological material for the study was blood obtained from female rats of the Sprague Dawley strain (n = 32). The animals were randomly divided into four groups: animals without supplementation, and animals supplemented at a dose of 0.2 mg/kg b.w. (0.1 mg/mL) with macro, micro (587 ± 83 nm), or nano (92 ± 41 nm) genistein. To induce mammary neoplasia (adenocarcinoma), rats were given 7,12-dimethyl-1,2-benz[a]anthracene (DMBA). The content of selected eicosanoids was determined by liquid chromatography with UV detection. An immunoenzymatic method was used to determine the content of cytokines and MMP-9. The expression of the IL-6, IL-1beta, and MMP-9 genes was determined with quantitative real-time PCR (qRT-PCR) using TaqMan probes. Based on the study, it was shown that supplementation of animals with genistein in macro, micro, and nano forms increased the intensity of the tumor process in rats. It was shown that the content of 12-HEPE, HODE, and 12-HETE in the serum of genistein-supplemented rats was statistically significantly lower with respect to the content of the aforementioned markers in the serum of rats receiving only a standard diet, devoid of supplementation. It was found that animals supplemented with nano-, micro-, and macrogenistein had higher levels of metalloproteinase-9, MMP-9, compared to animals without supplementation. There was a significant increase in MMP-9 gene expression in the blood of macrogenistein-supplemented animals, relative to the other groups of rats. On the basis of the study, it was shown that supplementation of animals with nano-, micro-, and macrogenistein had an effect on the development of the tumor process. Dietary supplementation with genistein significantly decreased the level of selected eicosanoids, which may have significant impacts on cancer development and progression.
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- 2024
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19. The complicated relationship between asthma and swimming
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Karolina Czarnecka, Katarzyna Burda, Anna Korczak, Oliwia Szewczyk, Ewa Olek, Justyna Jędrzejczyk, Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, and Emilia Wójcik
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Asthma ,swimming ,cold water swimming ,exercise induced asthma ,childhood asthma ,Sports ,GV557-1198.995 ,Sports medicine ,RC1200-1245 - Abstract
Introduction: Apart from pharmacological treatment, non-pharmacological strategies including physical activity play a significant role in the management of asthma. The aim of this paper is to examine various topics related to swimming and asthma. They include the detailed effect of swimming on asthma control,the potential role of swimming in early childhood asthma development, exercise induced asthma in swimmers as well as the relationship between asthma and cold water swimming. Review methods: This article is based on the literature found in the PubMed Database from the period of 1971-2024 with the use of keywords such as “asthma”, “swimming”, “cold water swimming”, “exercise induced asthma”, “childhood asthma” Description of the state of knowledge: Swimming is a safe form of physical activity for asthma patients.Swimming training enhances aerobic capacity, reduces exercise-induced bronchoconstriction and improves lung function in both pediatric and adult patients. However, there is a concern regarding indoor swimming pools that chlorine can potentially induce airway inflammation. There is research suggesting that early life swimming pool exposure may contribute to the asthma development in atopic children. There is some premise to the thought that cold water swimming may help alleviate asthma symptoms, but it also carries many risks.Swimming is a major cause of exercise induced asthma in professional athletes. Conclusions: Alongside appropriate pharmacological treatment, swimming is a valuable strategy in asthma management in both pediatric and adult asthma patients. The risks of chlorinating pools are still not known to outweigh the benefits of swimming for asthmatics. Further research should be carried out on safety of early swimming in atopic children. Cold water swimming should also be evaluated in terms of safety and potential benefits for asthma patients.
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- 2024
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20. Eating disorders among professional athletes. A narrative review
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Oliwia Szewczyk, Ewa Olek, Karolina Czarnecka, Anna Korczak, Katarzyna Burda, Emilia Wójcik, Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, and Justyna Jędrzejczyk
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eating disorders ,professional athletes ,ED ,sport ,anorexia nervosa ,bulimia nervosa ,Sports ,GV557-1198.995 ,Sports medicine ,RC1200-1245 - Abstract
Introduction: Eating disorders are potentially mortal health conditions affecting mostly young people. The reasons for that in general population are connected to vulnerable self-image, following the current beauty standards and co-existing psychiatric comorbidities. Athletes may be in danger of developing a pathological eating pattern due to sport specific reasons such as higher scores related to thinner body. Aim of study: The main aim of the study was to examine the relationship between eating disorders in professional athletes’ population, evaluate causes and risk factors and to assess health consequences to eating disorder in sport. Materials and methods: This article is based on the literature found in PubMed and Google Scholar Database with the use of keywords such as ”eating disorders”, “sport”, “athletes”, “anorexia nervosa in athletes”, “eating disorders in sport”, “disordered eating in sportsmen”, “female athletes”, “bulimia nervosa”, “binge eating”, “ED and sport”, “mental health and sport”, “consequences of eating disorders”, “sport education”. Results: Investigation of available literature revealed the connection between developing eating disorder in professional athlete sample. The reasons behind it are mostly sports’ oriented and connected to the desire to achieve better results and perfectionism. However, developing an eating disorder results in worse sports’ performance, menstrual irregularity, lower bone mineral density, cardiovascular issues and can be potentially mortal. Conclusion: Athletes are in danger of developing eating disorders. There should be a focus on evaluating people in sport in terms of eating patterns, however available questionnaires are inefficient because players tend to underreport their problems. Coaches and families of the athletes need to be educated in the topic as they can recognize dangerous behaviors first.
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- 2024
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21. Multifunctional Piezoelectric Yarns and Meshes for Efficient Fog Water Collection, Energy Harvesting, and Sensing
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Gregory Parisi, Piotr K. Szewczyk, Shankar Narayan, Daniel P. Ura, Joanna Knapczyk‐Korczak, and Urszula Stachewicz
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energies ,fibers ,fog collections ,polyvinylidene fluoride (PVDF) ,sensings ,water harvestings ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Given global water scarcity and the quest for sustainable energy, there's a pressing need for integrated approaches addressing water‐energy interdependence worldwide. A practical approach for this challenge involves the implementation of fog water collectors. Herein, a polyvinylidene fluoride (PVDF) multifunctional device capable of harvesting water and electricity from wind is developed and tested, collecting up to 365 mg cm−2 h−1 of fog water. Due to the piezoelectric nature of electrospun PVDF, these yarns and meshes not only serve as piezoelectric sensors, enabling the detection of incoming fog flow and determination of its speed and, bust also harvest electricity by charging a capacitor, making it a green and renewable power source. In this study, promising insights are offered into developing efficient fog water collection methods and utilizing piezoelectric fiber‐based yarns and meshes for multifunctional applications in sustainable water management, energy harvesting, and sensing in a single device.
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- 2024
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22. The therapeutic potential of polyunsaturated fatty acids in the management of inflammatory skin disorders
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Emilia Wójcik, Anna Korczak, Olga Łopacińska, Oliwia Szewczyk, Karolina Czarnecka, Katarzyna Burda, Aleksandra Korn, Ewa Olek, Katarzyna Stańczyk, and Justyna Jędrzejczyk
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omega-3 fatty acids ,acne vulgaris ,psoriasis ,atopic dermatitis ,Sports ,GV557-1198.995 ,Sports medicine ,RC1200-1245 - Abstract
Introduction and purpose: Polyunsaturated fatty acids (PUFAs) are a well-known component of a nutritionally balanced diet. There is a wealth of evidence demonstrating that the ingestion of these substances enhances health, as they are involved in a multitude of metabolic processes that are essential for cellular functionality. However, the contemporary Western diet is distinguished by a reduction in the consumption of omega-3 polyunsaturated fatty acids (PUFAs). The objective of this review is to present the potential therapeutic efficacy of omega-3 PUFA supplementation in the most common inflammatory skin disorders, such as acne vulgaris, atopic dermatitis and psoriasis vulgaris. State of knowledge: Acne vulgaris, atopic dermatitis and psoriasis vulgaris differ in terms of their pathophysiology. However, they are all characterised by underlying inflammatory processes. Omega-3 fatty acids have been demonstrated to possess anti-inflammatory properties. They are capable of modulating both the innate and the adaptive immune responses, thereby alleviating the symptoms of the aforementioned skin disorders. Summary: Given the pluripotent anti-inflammatory qualities of omega-3 polyunsaturated fatty acids, it is reasonable to conclude that they have the potential to become an effective therapeutic tool in the management of inflammatory skin diseases.
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- 2024
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23. Late chronotype and associated health problems
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Justyna Jędrzejczyk, Aleksandra Korn, Olga Łopacińska, Katarzyna Stańczyk, Karolina Czarnecka, Emilia Wójcik, Anna Korczak, Oliwia Szewczyk, Ewa Olek, Katarzyna Burda, and Tomasz Szaliński
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mental health ,chronotype ,cancer ,late chronotype ,Diabetes type 2 ,depression ,Sports ,GV557-1198.995 ,Sports medicine ,RC1200-1245 - Abstract
Introduction: Chronotype reflects an individual's preference for activity and rest within a 24-hour period, governed by the internal circadian clock system located in the suprachiasmatic nuclei of the hypothalamus. There are three chronotypes: Morning, Evening, and Intermediate. The evening type is also called “night owls” or late chronotype. Night owls prefer to be active in the evening and sleep and wake up late. The misalignment between the sleep patterns in late chronotype and the social schedules puts the night owls in danger of physical and mental health issues. Purpose of work: The primary aim of this review is to provide a comprehensive overview of current knowledge on the impact of late chronotype on health. Methods and materials: A review of the literature available in the PubMed database, the following keywords and their combinations were searched: "chronotype", “mental health", "cancer", “late chronotype”, “circadian rhythm”, “type 2 diabetes”, “depression”. State of knowledge: Studies have confirmed that late chronotype is associated with a higher risk of type 2 diabetes, obesity, cancer, alcohol and cigarette addiction, and unhealthy eating habits. Furthermore, the evening chronotype is an independent risk factor for depression. It is also linked with anxiety, bipolar disorder, and schizophrenia. Summary: In this review, we have summarized the latest research on late chronotype, circadian misalignment, and their potential consequences on human health. Most studies on evening chronotype and related health issues are cross-sectional. Further longitudinal or experimental research is needed to examine the potential cause-and-effect relationships on this cause.
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- 2024
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24. Evaluation of dietary intake of the School of Sports Championship students
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Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, Karolina Czarnecka, Emilia Wójcik, Anna Korczak, Justyna Jędrzejczyk, Oliwia Szewczyk, Ewa Olek, Katarzyna Burda, and Jakub Kuberski
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sport ,nutrition ,athletes ,supplementation ,Sports ,GV557-1198.995 ,Sports medicine ,RC1200-1245 - Abstract
Introduction and purpose: Nutrition plays an important role in the lives of young athletes. A well-balanced diet is crucial not only for their sports performance, but also for their proper growth and optimal health. The aim of this study is to evaluate the dietary intake of the School of Sports Championship students. A brief description of the state of knowledge: When compared to the nutritional needs of regular teenagers, young athletes have higher caloric requirements. They need to follow precise meal scheduling, must maintain proper hydration, and sometimes need to use dietary supplements. Moreover, adolescent athletes, especially females, have a higher risk of athlete triad, anemia, or eating disorders. In addition, young athletes seem to be unaware of the importance of their diet and how it directly affects their overall health and athletic performance. Conclusions: The results of this study indicate that the dietary choices of young athletes significantly affect their sports performance. We found a correlations between the duration of trainings and the intake of sequentially: protein, fiber, and vitamin D. Also, we discovered that female athletes consume less vitamin D and iron compared to male athletes, which may lead to a dangerous health implications, including anemia or the female athlete triad. However, there is a need for more prospective randomized clinical trials conducted on a larger sample size to reach final conclusions.
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- 2024
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25. Evaluation of an automated matching system of children and families to virtual mental health resources during COVID-19
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Ronda F Lo, Anett Schumacher, Kaitlyn LaForge-Mackenzie, Katherine Tombeau Cost, Jennifer Crosbie, Alice Charach, Evdokia Anagnostou, Catherine S. Birken, Suneeta Monga, and Daphne J. Korczak
- Subjects
Child ,Adolescent ,Mental health profiles ,Resource matching ,Pediatrics ,RJ1-570 ,Psychiatry ,RC435-571 - Abstract
Abstract Background Children and their families often face obstacles in accessing mental health (MH) services. The purpose of this study was to develop and pilot test an electronic matching process to match children with virtual MH resources and increase access to treatment for children and their families during COVID-19. Methods Within a large observational child cohort, a random sample of 292 families with children ages 6–12 years were invited to participate. Latent profile analysis indicated five MH profiles using parent-reported symptom scores from validated depression, anxiety, hyperactivity, and inattention measures: (1) Average Symptoms, (2) Low Symptoms, (3) High Symptoms, (4) Internalizing, and (5) Externalizing. Children were matched with virtual MH resources according to their profile; parents received surveys at Time 1 (matching process explanation), Time 2 (match delivery) and Time 3 (resource uptake). Data on demographics, parent MH history, and process interest were collected. Results 128/292 families (44%) completed surveys at Time 1, 80/128 families (63%) at Time 2, and a final 67/80 families (84%) at Time 3, yielding an overall uptake of 67/292 (23%). Families of European-descent and those with children assigned to the Low Symptoms profile were most likely to express interest in the process. No other factors were associated with continued interest or uptake of the electronic matching process. Most participating parents were satisfied with the process. Conclusions The electronic matching process delivered virtual MH resources to families in a time-efficient manner. Further research examining the effectiveness of electronically matched resources in improving children’s MH symptoms is needed.
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- 2024
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26. The Distinction Between Social Connectedness and Support When Examining Depressive Symptoms Among Children and Adolescents During the COVID-19 Pandemic
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Park, Caroline, Tsujimoto, Kimberley C., Cost, Katherine Tombeau, Anagnostou, Evdokia, Birken, Catherine S., Charach, Alice, Monga, Suneeta, Kelley, Elizabeth, Nicolson, Rob, Georgiadis, Stelios, Burton, Christie, Crosbie, Jennifer, and Korczak, Daphne J.
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- 2023
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27. Measuring welfare with the use of the MIMIC approach: evidence for Poland
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Jewczak, Maciej and Korczak, Karol
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- 2023
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28. Family functioning and quality of life among children with nephrotic syndrome during the first pandemic wave
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Aman, Nowrin F., Fitzpatrick, Jessica, de Verteuil, Isabel, Vasilevska-Ristovska, Jovanka, Banh, Tonny Hue Minh, Korczak, Daphne J., and Parekh, Rulan S.
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- 2023
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29. Generative AI in Management – Today and Tomorrow
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Jerzy Korczak and Ilona Pawełoszek
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artificial intelligence in business ,human-computer interface ,natural language processing ,decision-making ,Business ,HF5001-6182 ,Finance ,HG1-9999 - Abstract
Theoretical background: The rapid and exponential technological advancements have far-reaching impacts on management information systems, management practices, and human life. The promising outcomes in Artificial Intelligence and cutting-edge research on semantic networks and natural language processing have motivated the authors to envision the future of management technology. Purpose of the article: Our paper focuses on the new communication facilities and artificial intelligence models used to process management-type queries in natural language. Research methods: The article discusses recently developed technologies, proposed by Google and Microsoft, notably Google Bard and Bing integrated with ChatGPT-4. Both chatbots use Generative AI methods and large language models to understand domain-based queries and generate answers. Main findings: The practical and social implications of new models in management practice are discussed. To illustrate the qualities and weaknesses of the features of new technologies, four examples of management decision-making are discussed. The case studies also show differences between these two technologies. Finally, the paper concludes by summarizing the expectations and limitations of Generative AI applications in management. The paper is one of the first publications describing and demonstrating the idea of interfaces in natural language in business-oriented applications.
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- 2023
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30. The Effects of Diet, Dietary Supplements, Drugs and Exercise on Physical, Diagnostic Values of Urine Characteristics
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Dorota Skrajnowska and Barbara Bobrowska-Korczak
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diet ,dietary supplements ,drugs ,urinalysis ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Background/Objectives: This review summarizes the current knowledge about factors that affect the physical characteristics of urine. It highlights proper urine sample collection and displays factors like diet, hydration status, and medications that can alter urine color, odor, clarity, specific gravity and pH. Results: Urinalysis is a minimally invasive examination of a patient’s health, especially concerning nephrological and endocrinological abnormalities, as well as dietary habits and stimulants used. Certain deviations in appearance, composition or frequency/pain during urination may indicate an ongoing disease process in the body. Based on laboratory results, further medical treatment is determined. The reason for a change in the color of the urine, for its clouding or intense odor may be a disease, as well as the consumption of food, medication, intensive physical exercise or inadequate hydration of the body. Well-standardized procedures for collecting, transporting, preparing and analyzing samples should become the basis for an effective diagnostic strategy in urinalysis. It is worth noting that pharmacists in pharmaceutical care are often the first people to whom a patient turns for health advice and for the interpretation of simple laboratory tests. Acquiring the ability to interpret the results of laboratory tests and the principles of proper sampling for laboratory tests is indispensable in the process of possible counseling and providing reliable answers to patients’ questions. Conclusions: Although urinalysis is not recommended as a routine screening tool for the general population, it can prove to be a valuable source of patient health data in some cases as the data will be useful to physicians and pharmacists to more effectively diagnose and better care for patients.
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- 2024
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31. CRISIS AFAR: an international collaborative study of the impact of the COVID-19 pandemic on mental health and service access in youth with autism and neurodevelopmental conditions
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Vibert, Bethany, Segura, Patricia, Gallagher, Louise, Georgiades, Stelios, Pervanidou, Panagiota, Thurm, Audrey, Alexander, Lindsay, Anagnostou, Evdokia, Aoki, Yuta, Birken, Catherine S., Bishop, Somer L., Boi, Jessica, Bravaccio, Carmela, Brentani, Helena, Canevini, Paola, Carta, Alessandra, Charach, Alice, Costantino, Antonella, Cost, Katherine T., Cravo, Elaine A, Crosbie, Jennifer, Davico, Chiara, Donno, Federica, Fujino, Junya, Gabellone, Alessandra, Geyer, Cristiane T, Hirota, Tomoya, Kanne, Stephen, Kawashima, Makiko, Kelley, Elizabeth, Kim, Hosanna, Kim, Young Shin, Kim, So Hyun, Korczak, Daphne J., Lai, Meng-Chuan, Margari, Lucia, Marzulli, Lucia, Masi, Gabriele, Mazzone, Luigi, McGrath, Jane, Monga, Suneeta, Morosini, Paola, Nakajima, Shinichiro, Narzisi, Antonio, Nicolson, Rob, Nikolaidis, Aki, Noda, Yoshihiro, Nowell, Kerri, Polizzi, Miriam, Portolese, Joana, Riccio, Maria Pia, Saito, Manabu, Schwartz, Ida, Simhal, Anish K., Siracusano, Martina, Sotgiu, Stefano, Stroud, Jacob, Sumiya, Fernando, Tachibana, Yoshiyuki, Takahashi, Nicole, Takahashi, Riina, Tamon, Hiroki, Tancredi, Raffaella, Vitiello, Benedetto, Zuddas, Alessandro, Leventhal, Bennett, Merikangas, Kathleen, Milham, Michael P., and Di Martino, Adriana
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- 2023
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32. The dark side of herbal medicine - risks of Ashwagandha (Withania Somnifera) consumption
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Katarzyna Burda, Karolina Czarnecka, Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, Emilia Wójcik, Anna Korczak, Justyna Jędrzejczyk, Oliwia Szewczyk, and Ewa Olek
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ashwagandha ,Withania somnifera ,herbal medicine ,thyrotoxicosis ,liver injury ,Education ,Sports ,GV557-1198.995 ,Medicine - Abstract
Introduction: Herbal medicine has been growing in popularity over the last few years. One of the most often used herbal remedy is Withania somnifera, more widely known as Ashwagandha Now known for its anti-stress, anti-inflammatory, antioxidant, anti-cancer, anti-anxiety properties it ranks as a cure-all. However, there is a rising amount of alarming reports regarding its safety. It has been observed that its effects are not always beneficial, and for some patients the risks of taking it may be greater than the promoted benefits. Aim of study: The aim of this paper is to evaluate possible risks connected to Withania Somnifera consumption based on available research articles and case reports. Materials and methods: This article is based on the literature found in the PubMed Database from the period of 2004-2024 with the use of keywords such as “Ashwagandha”; “Withania Somnifera”, “herbal medicine”;”complementary medicine”;“liver injury”; “thyrotoxicosis”; “adrenal insufficiency”;”autoimmune diseases”. Results: The outcomes of all the reviewed studies in this paper indicate that Withania Somnifera might cause a wide range of side effects. They include herb induced liver injury, endocrine complications such as thyrotoxicosis and adrenal insufficiency, acute graft rejection in a kidney transplant recipient and possible contribution to the onset of new autoimmune disease in patient with the history of autoimmune disorders. Conclusion: Further long-term research is needed on the Ashwaghanda’s benefits but particularly on its safety and potential side effects. The common education on the risks of taking herbal supplements should be carried out among health professionals and the rest of the society. Ashwagandha should not be used by patients with liver, endocrine and autoimmune disorders as well as transplant recipients.
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- 2024
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33. The Long-term Effects of Iron Deficiency in Early Infancy on Neurodevelopment
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Anna Korczak, Emilia Wójcik, Ewa Olek, Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, Justyna Jędrzejczyk, Oliwia Szewczyk, Katarzyna Burda, and Karolina Czarnecka
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neurodevelopment ,infantile ,iron ,deficiency ,Education ,Sports ,GV557-1198.995 ,Medicine - Abstract
Introduction and Purpose: Iron deficiency alongside anaemia is one of the most significant global health concerns with potentially long-lasting implications on child development and health outcomes. The period of infancy represents a crucial phase of central nervous system maturation, rendering infants particularly susceptible to the adverse effects of iron deficiency. It is therefore crucial to pay close attention to this issue. The aim of this review is to elucidate the neurological implications of iron deficiency in infancy and emphasize the necessity of implementing preventive strategies to safeguard child development. State of Knowledge: Iron deficiency in infancy can result in impairments of brain development. Extensive research highlights the influence of this micronutrient on various physiological processes, including the synthesis of neurotransmitters, neuronal metabolism, myelination, synaptogenesis and gene expression. Furthermore, iron deficiency during infancy is associated with adverse developmental outcomes, including cognitive, motor, and socioemotional deficits. Long-term follow-up studies have elucidated the enduring neurological consequences of iron deficiency in infancy, with effects extending into childhood and beyond. Summary: Given that the changes that occur during the infantile period are often irreversible and have long-lasting implications for future development, it is of the utmost importance to prioritize prevention strategies.
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- 2024
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34. Exploring the Health Benefits of Matcha: A Comprehensive Review
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Aleksandra Korn, Justyna Jędrzejczyk, Olga Łopacińska, Katarzyna Stańczyk, Karolina Czarnecka, Emilia Wójcik, Anna Korczak, Oliwia Szewczyk, Ewa Olek, and Katarzyna Burda
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Matcha ,catechin ,cardiovascular health ,cognitive function ,anti-tumor response ,Education ,Sports ,GV557-1198.995 ,Medicine - Abstract
Introduction: Matcha, a finely powdered form of green tea, has recently gained global popularity due to its vibrant green color, distinctive taste, and versatile applications in various food products. Despite its promising nutritional profile, matcha has not received significant attention in the academic community compared to traditional green tea. Purpose of work: The primary objective of this review is to provide a comprehensive overview of the current understanding of matcha's biological properties and its potential health benefits. Methods and materials: A review of the literature available in the PubMed database and Google Scholar, the following keywords were searched: "matcha", “catechin", "EGCG", “cognitive function”, “green tea” State of knowledge: Existing studies have demonstrated that matcha exhibits anticancer properties, enhances cognitive function, improves cardio-metabolic health, and modulates the gut microbiome. Moreover, matcha is known for its anti-inflammatory and antioxidant properties. Summary: This review summarizes the latest research findings on matcha green tea and its potential health benefits. While animal studies have shown promising results, our knowledge of matcha's effects on human health remains limited. Further randomized controlled trials are necessary to fully elucidate its potential health-promoting effects. Therefore, we advocate for continued research into matcha's properties and its integration into dietary practices to promote overall health and well-being.
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- 2024
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35. Association between personality disorders and migraine. A narrative review
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Ewa Olek, Oliwia Szewczyk, Karolina Czarnecka, Anna Korczak, Katarzyna Burda, Emilia Wójcik, Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, and Justyna Jędrzejczyk
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migraine ,personality disorder ,depression ,migraine education ,anxiety ,health ,Education ,Sports ,GV557-1198.995 ,Medicine - Abstract
Introduction: Migraine is one of the most prevalent types of headache and is a subject of many clinical trials. There are various risk factors associated with migraine occurrence, from hormonal and genetic to environmental. It is observed that some migraineurs have specific psychological features- sometimes called as migraine personality. This encouraged researchers to evaluate migraine patients in terms of psychiatric co-existing conditions. Aim of study: The main aim of the study was to examine the relationship between migraine and psychiatric comorbidities, primarily personality disorders. Materials and methods: This article is based on the literature found in PubMed and Google Scholar Database with the use of keywords such as ”migraine”, “headache factors”, “personality disorder”, “migraine personality”, “migraine education”, “borderline personality disorder”, “anxious personality disorder”, “migraine health”, “depression and migraine”, “medication over-use in migraine”, “migraine comorbidities”, “depression”, “anxiety”. Results: Investigation of available literature revealed the connection between migraine and personality disorders. Psychiatric comorbidities worsen the treatment prognosis, are a risk factor of medication overuse and chronic headaches. Conclusion: Psychiatric comorbidities are frequent among migraineurs. Clinical evaluation of these patients should be complex and contain psychological and psychiatric analysis, especially in patients resistant to standard treatment.
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- 2024
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36. Effects of antioxidant supplementation for polycystic ovary syndrome
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Olga Łopacińska, Katarzyna Stańczyk, Aleksandra Korn, Karolina Czarnecka, Emilia Wójcik, Anna Korczak, Justyna Jędrzejczyk, Oliwia Szewczyk, Ewa Olek, and Katarzyna Burda
- Subjects
polycystic ovary syndrome ,antioxidant ,oxidative stress ,Education ,Sports ,GV557-1198.995 ,Medicine - Abstract
Introduction and purpose: Polycystic ovary syndrome is the most common endocrinopathy in women, with a prevalence ranging from 10% to 13%. Oxidative stress and decreased antioxidant levels contribute to the development of various diseases, and one of them is polycystic ovary syndrome. The aim of this review is to provide an overview of the current knowledge about the effects of antioxidant administration in PCOS treatment. A brief description of the state of knowledge: Oxidative stress is an imbalance between increased levels of reactive oxygen species and a decreased efficiency of antioxidant mechanisms, which can potentially cause damage. The harmful effects of free radicals might be neutralized by antioxidants obtained from the diet, such as polyphenols, vitamins C, and E. These compounds improve several aspects of the PCOS pathomechanism, including hormonal imbalance, glucose metabolism, lipid profile, and ovarian functionality. Conclusions: The outcomes of all the reviewed studies in this paper indicate that antioxidants such as resveratrol, curcumin, vitamin C and E, N-acetylcysteine, and melatonin have therapeutic potential in the management of PCOS. However, currently antioxidant therapies cannot be recommended in PCOS therapy since there is a need for more prospective randomized clinical trials on a larger sample to establish a long-term effects of antioxidants supplementation in PCOS, the optimal dosage, and finally to assess which antioxidant is the most efficient in PCOS treatment.
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- 2024
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37. Molecular mechanisms of tigecycline-resistance among Enterobacterales
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Lukasz Korczak, Piotr Majewski, Dominika Iwaniuk, Pawel Sacha, Mariola Matulewicz, Piotr Wieczorek, Paulina Majewska, Anna Wieczorek, Piotr Radziwon, and Elzbieta Tryniszewska
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tigecycline ,glycylcyclines ,efflux pumps ,multidrug resistance (MDR) ,Enterobacterales ,Microbiology ,QR1-502 - Abstract
The global emergence of antimicrobial resistance to multiple antibiotics has recently become a significant concern. Gram-negative bacteria, known for their ability to acquire mobile genetic elements such as plasmids, represent one of the most hazardous microorganisms. This phenomenon poses a serious threat to public health. Notably, the significance of tigecycline, a member of the antibiotic group glycylcyclines and derivative of tetracyclines has increased. Tigecycline is one of the last-resort antimicrobial drugs used to treat complicated infections caused by multidrug-resistant (MDR) bacteria, extensively drug-resistant (XDR) bacteria or even pan-drug-resistant (PDR) bacteria. The primary mechanisms of tigecycline resistance include efflux pumps’ overexpression, tet genes and outer membrane porins. Efflux pumps are crucial in conferring multi-drug resistance by expelling antibiotics (such as tigecycline by direct expelling) and decreasing their concentration to sub-toxic levels. This review discusses the problem of tigecycline resistance, and provides important information for understanding the existing molecular mechanisms of tigecycline resistance in Enterobacterales. The emergence and spread of pathogens resistant to last-resort therapeutic options stands as a major global healthcare concern, especially when microorganisms are already resistant to carbapenems and/or colistin.
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- 2024
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38. Editorial: New advances in dietary fibers and their role in metabolic, digestive, and immune health
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Junrui Cheng, Aylin Sahin, Changling Hu, Renee Korczak, and Jing Zhou
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dietary fiber ,metabolic health ,immune health ,digestive health ,gut health ,Nutrition. Foods and food supply ,TX341-641 - Published
- 2024
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39. Nanohardness and Young’s Modulus of Pb1–xCdxTe Crystals Grown by the SSVG and MBE Methods
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Wojciech Wołkanowicz, Stanisław Adamiak, Anna Juś, Elżbieta Łusakowska, Roman Minikayev, Krzysztof Dybko, Dariusz Płoch, Jędrzej Korczak, Andrzej Szczerbakow, Tomasz Wojtowicz, and Wojciech Szuszkiewicz
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Chemistry ,QD1-999 - Published
- 2023
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40. Vulnerability pathways to mental health outcomes in children and parents during COVID-19
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Rizeq, Jala, Korczak, Daphne J., Cost, Katherine Tombeau, Anagnostou, Evdokia, Charach, Alice, Monga, Suneeta, Birken, Catherine S., Kelley, Elizabeth, Nicolson, Rob, Burton, Christie L., and Crosbie, Jennifer
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- 2023
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41. The Development of Cortical Responses to the Integration of Audiovisual Speech in Infancy
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Dopierała, Aleksandra A. W., Pérez, David López, Mercure, Evelyne, Pluta, Agnieszka, Malinowska-Korczak, Anna, Evans, Samuel, Wolak, Tomasz, and Tomalski, Przemysław
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- 2023
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42. Knowledge of Food–Drug Interactions among Medical University Students
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Małgorzata Jelińska, Agnieszka Białek, Małgorzata Czerwonka, Dorota Skrajnowska, Agnieszka Stawarska, and Barbara Bobrowska-Korczak
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food–drug interactions ,knowledge ,students of pharmacy ,medicine ,dietetics ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Background: Food–drug interactions (FDIs) may alter drug pharmacokinetics and pharmacodynamics, modifying the whole therapy’s effectiveness. Some of them cause the attenuation of drug effects, while others inhibit the medicines’ metabolism resulting, in too high concentrations of the medicine in the body. Thus, some healthcare professionals—doctors, pharmacists or dieticians—should be aware of the possibility of food–drug interactions. This study aimed to assess knowledge of food–drug interactions among students of pharmacy, medicine, stomatology, medical analysis and dietetics and students of the college of further medical education for pharmacy technicians. Methods: Students (n = 820) completed a custom-made questionnaire. The relationships between the continuous variables were analysed on the basis of Pearson’s correlation coefficient. To verify the predictors of objective students’ knowledge about food–drug interactions, a multiple linear regression model with analysis of covariance (ANCOVA) was used. The Kruskal–Wallis test was performed to compare the total scores the respondents received for questions assessing their objective knowledge of FDI. Results: Students’ objective knowledge of FDIs correlated positively with their year of study and their self-evaluation of it. It was also significantly influenced by the field and mode of studies and by the fact that the issue had been discussed during the courses. Conclusions: Most students of the medical university had serious deficiencies in their knowledge of food–drug interactions. This is of particular concern for future doctors and dentists. Among the respondents, pharmacy students stood out, as their FDI knowledge was greater. The issue of food–drug interactions should be more widely taught at medical universities, which was emphasised by the respondents themselves.
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- 2024
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43. Improving access to assessments of early motor development in local languages: polish adaptation of the Early Motor Questionnaire
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Laudańska, Zuzanna, Szmytke, Magdalena, Radkowska, Alicja, Malinowska-Korczak, Anna, Babis, Karolina, Pérez, David López, and Tomalski, Przemysław
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- 2023
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44. Optimizing Piezoelectric Coefficient in PVDF Fibers: Key Strategies for Energy Harvesting and Smart Textiles
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Sunija Sukumaran, Piotr K. Szewczyk, Joanna Knapczyk‐Korczak, and Urszula Stachewicz
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crystallinity ,electrospun fibers ,piezoelectricity ,PVDF ,reduced graphene oxide ,thermal annealing ,Electric apparatus and materials. Electric circuits. Electric networks ,TK452-454.4 ,Physics ,QC1-999 - Abstract
Abstract With the advancement in smart electronic devices and self‐powered devices, the demand for piezoelectric polymers has found potential research interest. Among these, electrospun polyvinylidene fluoride (PVDF) fibers have gained attention for energy harvesting due to their flexibility and higher piezoelectric coefficient. In the current work, various methods are compared to enhance PVDF's piezoelectric properties, including different solvents (DMAc, DMF), conductive filler (rGO), and annealing as post‐treatment. The results indicate that PVDF/rGO fibers in DMAc solvent exhibit the highest β phase fraction and crystallinity. Moreover, for the first time, the piezoelectric properties of PVDF/rGO electrospun single fiber is presented using high voltage switching spectroscopy piezoelectric force microscopy (HVSS‐PFM). The highest piezoelectric coefficient (d33) is measured for PVDF/DMAc‐rGO composite fibers. Notably, PVDF/rGO in DMAc solvent significantly improves the piezoelectric coefficient, leading to a remarkable fourfold increase in power density compared to pure PVDF, making it a promising material for energy harvesting applications.
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- 2023
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45. Evaluation and Discrimination of Lipid Components and Iron and Zinc Levels in Chicken and Quail Eggs Available on the Polish Market
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Małgorzata Czerwonka, Agnieszka Białek, Dorota Skrajnowska, and Barbara Bobrowska-Korczak
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chicken eggs ,quail eggs ,fatty acids ,iron ,zinc ,cholesterol ,Chemical technology ,TP1-1185 - Abstract
All over the world, birds’ eggs are an important and valuable component of the human diet. This study aimed to compare the content of lipid components and their nutritional value as well as iron and zinc levels in chicken and quail eggs commonly available on the market. In egg lipids, unsaturated fatty acids were dominant, especially oleic acid, the content of which was about 40% of the total fatty acids (TFAs). Linoleic acid was the major polyunsaturated fatty acid. Compared to other products of animal origin, eggs were characterized by favorable values of lipid quality indices, especially the index of atherogenicity, thrombogenicity, and the hypocholesterolemic-to-hypercholesterolemic ratio. In the present study, no differences were found in the content of tested nutrients between eggs from different production methods (organic, free-range, barn, cages). Based on linear discriminant analysis, inter-breed differences were noticed. Cluster analysis showed that eggs enriched in n3 PUFAs (according to the producers’ declarations) differed from other groups of chicken eggs. However, in eggs from one producer only, the amount of EPA and DHA exceeds 80 mg per 100 g, entitling the use of the nutrition claim on the package. Quail eggs differed from chicken eggs in FA profile and cholesterol and iron levels.
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- 2024
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46. Cholesterol and Its Oxidation Derivatives Content in Market Dairy Products
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Małgorzata Czerwonka, Anna Gielecińska, Agnieszka Białek, Małgorzata Białek, and Barbara Bobrowska-Korczak
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cholesterol ,cholesterol oxidation derivatives ,dairy products ,cheese ,yoghurt ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Cholesterol oxidation products (COPs) are contaminants of food of animal origin. Increased levels of these compounds in the human body are associated with an increased risk of many non-communicable diseases. Dairy products are mentioned among the main sources of these compounds in the diet. The objective of this study was to evaluate the contents of cholesterol and its oxidized derivatives in eleven groups of dairy products, willingly consumed in European countries. The levels of COPs were determined by applying the GC-TOF/MS method. In the tested products, cholesterol and its oxidation derivatives, such as 7-ketocholesterol, 7α-hydroxycholesterol, 7β-hydroxycholesterol, 5,6β-epoxycholesterol and 5,6α-epoxycholesterol, were determined. The studied dairy products differed in their contents and profiles of oxysterols. The highest contents of COPs were found in cheese with internal mold (13.8 ± 2.5 mg kg−1) and Cheddar (11.7 ± 3.5 mg kg−1), while the lowest levels were detected in yoghurt (0.94 ± 0.30 mg kg−1) and kefir (0.57 ± 0.11 mg kg−1). 7-ketocholesterol and 5,6β-epoxycholesterol were the dominant oxysterols. The ratio of oxidized derivatives to total cholesterol was on average 1.7%. Our results confirmed that dairy products are an important dietary source of COPs. Their levels should be monitored in dairy products to provide the best health quality.
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- 2024
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47. Genistein Supplementation and Bone Health in Breast Cancer in Rats
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Dorota Skrajnowska, Wojciech Bielecki, Arkadiusz Szterk, Karol Ofiara, and Barbara Bobrowska-Korczak
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bones ,mineral composition ,cancer ,genistein ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The aim of our study was to analyse the effect of supplementation with various forms of genistein (nano-, micro-, and macro-) on the mineral status of rat femurs in conditions of DMBA-induced mammary gland neoplasia. Thirty-two 30-day-old Sprague Dawley rats were used in the study. The rats were divided into four experimental groups: a control group (without supplementation) and groups supplemented with nanosized (92 ± 41 nm), microsized (587 ± 83 nm), and macrosized genistein. Micromorphometric and histological examination of the rat femurs were performed, as well as analysis of the weight and mineral composition (17 elements). Quadrupole ICP-MS was used for analysis of all trace elements. Supplementation with genistein (nano-, micro-, and macro-) was shown to cause changes in the mineral composition of the bones. In the rats receiving nanogenistein, disintegration of the bone tissue was observed. The femurs of these animals had higher content of calcium (by nearly 300%) and potassium (by 25%) than the other groups, while the level of magnesium was about 22% lower. In the case of microelements, there were increases in copper (by 67%), boron (48%), manganese (13%), and nickel (100%), and a 16% decrease in strontium compared to the bones of rats without genistein supplementation. Changes in micromorphometric parameters, resulting in increased bone fragility, were observed. Administration of genistein was found to have an effect on the amount of trace elements in the bone tissue of rats with breast cancer.
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- 2024
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48. Are the diets of sympatric Pygoscelid penguins more similar than previously thought?
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Wawrzynek-Borejko, Justyna, Panasiuk, Anna, Hinke, Jefferson T., and Korczak-Abshire, Małgorzata
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- 2022
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49. A Novel Method for the Determination of Squalene, Cholesterol and Their Oxidation Products in Food of Animal Origin by GC-TOF/MS
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Małgorzata Czerwonka, Agnieszka Białek, and Barbara Bobrowska-Korczak
- Subjects
cholesterol ,squalene ,cholesterol oxidation products ,food of animal origin ,7-ketocholesterol ,gas chromatography ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Cholesterol present in food of animal origin is a precursor of oxysterols (COPs), whose high intake through diet can be associated with health implications. Evaluation of the content of these contaminants in food is associated with many analytical problems. This work presents a GC-TOF/MS method for the simultaneous determination of squalene, cholesterol and seven COPs (7-ketocholesterol, 7α-hydroxycholesterol, 7β-hydroxycholesterol, 25-hydroxycholesterol, 5,6α-epoxycholesterol, 5,6β-epoxycholesterol, cholestanetriol). The sample preparation procedure includes such steps as saponification, extraction and silylation. The method is characterized by high sensitivity (limit of quantification, 0.02–0.25 ng mL−1 for instrument, 30–375 μg kg of sample), repeatability (RSD 2.3–6.2%) and a wide linearity range for each tested compound. The method has been tested on eight different animal-origin products. The COP to cholesterol content ratio in most products is about 1%, but the profile of cholesterol derivatives differs widely (α = 0.01). In all the samples, 7-ketocholesterol is the dominant oxysterol, accounting for 31–67% of the total COPs level. The levels of the other COPs range between 0% and 21%. In none of the examined products are cholestanetriol and 25-hydroxycholesterol present. The amount of squalene, which potentially may inhibit the formation of COPs in food, ranges from 2 to 57 mg kg−1.
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- 2024
- Full Text
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50. Influence of Androgen Deprivation Therapy on the Development of Sarcopenia in Patients with Prostate Cancer: A Systematic Review
- Author
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Marta Stelmach-Mardas, Wojciech Warchoł, Aleksandra Garczyk, Emilia Warchoł, Jolanta Korczak, Maria Litwiniuk, Beata Brajer-Luftmann, and Marcin Mardas
- Subjects
androgen deprivation therapy ,ADT ,sarcopenia ,prostate cancer ,prostatic neoplasm ,systematic review ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The changes in body composition during androgen deprivation therapy (ADT) in patients suffering from prostate cancer (PCa) are recognized by professionals more often as biomarker for effective treatment. The aim of this study was to investigate the impact of ADT on the sarcopenia development in PCa. The following databases were used: PubMed, Embase, Web of Science and Scopus databases. Out of 2183 studies, 7 were included in this review. The fixed-effect model was used in the meta-analysis. A significant increase in SATI (Subcutaneous Adipose Tissue Index) of 0.32 (95% CI: 0.13–0.51) p = 0.001, decrease in SMI (Skeletal Muscle Index) of −0.38 (95% CI: −0.57 to −0.19) p < 0.0001, and SMD (Skeletal Muscle Density) of −0.46 (95% CI: −0.69 to −0.24) p < 0.0001 were observed. No statistical association was visible between ADT and changes in BMI (Body Mass Index), 0.05 (95% CI: −0.18–0.28), p = 0.686, and VATI (Visceral Adipose Tissue Index): 0.17 (95% CI: −0.02 to 0.37), p = 0.074. In conclusion, the ADT significantly contributes to the body composition changes and sarcopenia development.
- Published
- 2024
- Full Text
- View/download PDF
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