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Mazur T, Malik M, Bieńko DC. The impact of chelating compounds on Cu 2+, Fe 2+/ 3+, and Zn 2+ ions in Alzheimer's disease treatment. J Inorg Biochem 2024; 257:112601. [PMID: 38744143 DOI: 10.1016/j.jinorgbio.2024.112601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/22/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by the accumulation of amyloid - β extracellular plaques and tau interfibrillar tangles, leading to memory loss, cognitive decline, and behavioral changes. With dementia posing a growing global health concern, there is an urgent need for comprehensive strategies to address its challenges. The economic burden of dementia is projected to rise significantly, emphasizing the necessity for collaborative efforts in research and healthcare. In the United States alone, millions are affected by AD, with prevalence increasing with age and even affecting younger individuals. The complexity of AD involves intricate biological processes, including the aggregation of amyloid beta, oxidative stress, and metal ion dysregulation. Metal ions, particularly those from copper, iron, and zinc, play pivotal roles in AD pathology, influencing Aβ deposition and tau protein accumulation. Current treatments offer symptomatic relief but do not address the underlying disease mechanisms. This paper explores the potential of various chelating compounds to target metal ions involved in AD pathology. N-acylhydrazones, morpholine, chrysin, quinoline, oxindole, cyclam, catechol-based, and quinazolinone-based derivatives show promising chelation activity and therapeutic effects. Metal chelation therapy offers a targeted approach to AD treatment by addressing the core pathology. By selectively binding to metal ions implicated in disease progression, chelators may minimize side effects associated with broad-spectrum treatments. Additionally, chelators may offer neuroprotective effects beyond metal binding, further enhancing their therapeutic potential. Overall, metal chelation therapy presents a promising strategy in combating AD, with the potential to significantly impact disease progression and improve patient outcomes.
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Affiliation(s)
- Tomasz Mazur
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
| | - Magdalena Malik
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
| | - Dariusz C Bieńko
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
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Abdi G, Gryl M, Sławek A, Kowalewska E, Mazur T, Podborska A, Mech K, Zawal P, Pritam A, Kmita A, Alluhaibi L, Maximenko A, Vijayakumar C, Szaciłowski K. Influence of crystal structure and composition on optical and electronic properties of pyridinium-based bismuth iodide complexes. Dalton Trans 2023; 52:14649-14662. [PMID: 37791584 DOI: 10.1039/d3dt02910g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
This study investigates the impacts of structure and composition on the optical and electronic properties of a series of pyridinium-based bismuth iodide complexes. Organic substrates with various functional groups, such as 4-aminopyridine (4-Ampy), 4-methylpyridine (4-Mepy), 4-dimethylaminopyridine (4-Dmapy), and 4-pyridinecarbonitrile (4-CNpy) with different electron-donating and electron-withdrawing groups at the para position of the pyridine ring were employed. Crystallographic analysis reveals various bismuth iodide structures, including 1D chains and discrete 0D motifs. The optical band gap of these materials, identified via diffuse reflectance spectroscopy (DRS) and verified with density functional theory (DFT) calculations, is influenced by the crystal packing and stabilising interactions. Through a comprehensive analysis, including Hirshfeld surface (HS) and void assessment, the study underscores the influence of noncovalent intermolecular interactions on crystal packing. Spectroscopic evaluations provide insights into electronic interactions, elucidating the role of electron donor and acceptor substituents within the lattice. Thermogravimetric differential thermal analysis (TG-DTA) indicates structural stability up to 250 °C. Linear sweep voltammetry (LSV) reveals significant conductivity in the range of 10-20 mS per pixel at 298.15 K. X-ray absorption spectroscopy (XAS) at the Bi L3 edge indicates a similar oxidation state and electronic environment across all samples, underscoring the role of bismuth centres surrounded by iodides.
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Affiliation(s)
- Gisya Abdi
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Marlena Gryl
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
| | - Andrzej Sławek
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Ewelina Kowalewska
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Tomasz Mazur
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Agnieszka Podborska
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Krzysztof Mech
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Piotr Zawal
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Anurag Pritam
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Angelika Kmita
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
| | - Lulu Alluhaibi
- National Synchrotron Radiation Centre SOLARIS, Czerwone Maki 98, 30-392 Kraków, Poland
| | - Alexey Maximenko
- National Synchrotron Radiation Centre SOLARIS, Czerwone Maki 98, 30-392 Kraków, Poland
| | - Chakkooth Vijayakumar
- Photosciences and Photonics Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695 019, India
| | - Konrad Szaciłowski
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Kawiory 30, 30-055 Kraków, Poland.
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Przyczyna D, Mech K, Kowalewska E, Marzec M, Mazur T, Zawal P, Szaciłowski K. The Memristive Properties and Spike Timing-Dependent Plasticity in Electrodeposited Copper Tungstates and Molybdates. Materials (Basel) 2023; 16:6675. [PMID: 37895657 PMCID: PMC10608134 DOI: 10.3390/ma16206675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/28/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023]
Abstract
Memristors possess non-volatile memory, adjusting their electrical resistance to the current that flows through them and allowing switching between high and low conducting states. This technology could find applications in fields such as IT, consumer electronics, computing, sensors, and medicine. In this paper, we report successful electrodeposition of thin-film materials consisting of copper tungstate and copper molybdate (CuWO4 and Cu3Mo2O9), which showed notable memristive properties. Material characterisation was performed with techniques such as XRD, XPS, and SEM. The electrodeposited materials exhibited the ability to switch between low and high resistive states during varied cyclic scans and short-term impulses. The retention time of these switched states was also explored. Using these materials, the effects seen in biological systems, specifically spike timing-dependent plasticity, were simulated, being based on analogue operation of the memristors to achieve multiple conductivity states. Bio-inspired simulations performed directly on the material could possibly offer energy and time savings for classical computations. Memristors could be crucial for the advancement of high-efficiency, low-energy neuromorphic electronic devices and technologies in the future.
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Affiliation(s)
- Dawid Przyczyna
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Krzysztof Mech
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
| | - Ewelina Kowalewska
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
| | - Mateusz Marzec
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
| | - Tomasz Mazur
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
| | - Piotr Zawal
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Konrad Szaciłowski
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (D.P.); (K.M.); (E.K.); (M.M.); (T.M.); (P.Z.)
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Grzebieniarz W, Tkaczewska J, Juszczak L, Krzyściak P, Cholewa-Wójcik A, Nowak N, Guzik P, Szuwarzyński M, Mazur T, Jamróz E. Improving the quality of multi-layer films based on furcellaran by immobilising active ingredients and impact assessment of the use of a new packaging material. Food Chem 2023; 428:136759. [PMID: 37418883 DOI: 10.1016/j.foodchem.2023.136759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/21/2023] [Accepted: 06/13/2023] [Indexed: 07/09/2023]
Abstract
To improve the quality of multi-layer film, four-layer films based on furcellaran and active ingredients: gelatin hydrolysate, curcumin, capsaicin, montmorillonite and AgNPs, were produced in an innovative manner. The films were characterised by SEM and AFM analysis. Along with an increase in the concentration of active ingredients, the structure of the film becomes less homogeneous, which may affect the functional properties. The objective of the study was to analyse changes in the functional properties of the newly-obtained films and to verify their potential as packaging materials for fish products. With the increase in active ingredient concentration, water properties also improved, but there were no noticeable significant effects on mechanical properties. For antioxidant properties, the obtained values were within 1.04-2.74 mM Trolox/mg (FRAP) and 7.67-40.49% (DPPH). The obtained multi-layer films were examined with regard to the shelf-life of salmon. For this purpose, salmon fillets were packed in films having good antioxidant and functional properties. The films were effective in microorganism growth inhibition responsible for fillet spoilage during storage. The microorganism number in the active film-stored samples was lower by 0.13 log CFU/g on day 12 versus the control. However, film application did not retard lipid oxidation in the salmon fillets. Nonetheless, the films show great potential as active packaging materials, extending the shelf-life of the packed foods.
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Affiliation(s)
- Wiktoria Grzebieniarz
- Department of Chemistry, University of Agriculture, Balicka 122, PL-30-149 Kraków, Poland.
| | - Joanna Tkaczewska
- Department of Animal Product Technology, Faculty of Food Technology, University of Agriculture, Balicka 122, PL-30-149 Kraków, Poland
| | - Lesław Juszczak
- Department of Dietetics and Food Studies, Faculty of Science and Technology, Jan Długosz University in Częstochowa, Armii Krajowej 13/15, PL-42-200 Częstochowa, Poland
| | - Paweł Krzyściak
- Department of Infection Control and Mycology, Faculty of Medicine, Jagiellonian University Medical College, Czysta 18, PL-31-121 Kraków, Poland
| | - Agnieszka Cholewa-Wójcik
- Department of Product Packaging, Cracow University of Economics, Rakowicka 27, PL-31-510 Kraków, Poland
| | - Nikola Nowak
- Department of Chemistry, University of Agriculture, Balicka 122, PL-30-149 Kraków, Poland
| | - Paulina Guzik
- Department of Animal Product Technology, Faculty of Food Technology, University of Agriculture, Balicka 122, PL-30-149 Kraków, Poland
| | - Michał Szuwarzyński
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. Mickiewicza 30, PL-30-059 Kraków, Poland
| | - Tomasz Mazur
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. Mickiewicza 30, PL-30-059 Kraków, Poland
| | - Ewelina Jamróz
- Department of Chemistry, University of Agriculture, Balicka 122, PL-30-149 Kraków, Poland
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Kruk J, Tkaczewska J, Szuwarzyński M, Mazur T, Jamróz E. Influence of storage conditions on functional properties of multilayer biopolymer films based on chitosan and furcellaran enriched with carp protein hydrolysate. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Malik M, Świtlicka A, Bieńko A, Komarnicka UK, Bieńko DC, Kozieł S, Kyzioł A, Mazur T, Machura B. Copper(ii) complexes with 2-ethylpyridine and related hydroxyl pyridine derivatives: structural, spectroscopic, magnetic and anticancer in vitro studies. RSC Adv 2022; 12:27648-27665. [PMID: 36276031 PMCID: PMC9516696 DOI: 10.1039/d2ra05133h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/21/2022] [Indexed: 12/01/2023] Open
Abstract
Copper(ii) complexes with 2-ethylpyridine (1 and 2), 2-(hydroxyethyl)pyridine (3) and 2-(hydroxymethyl)pyridine (4) have been synthesized and characterized. All inorganic compounds have been studied by X-ray diffraction, thermogravimetry, vibrational and EPR spectroscopy as well as theoretical methods. The geometry of the complexes 1, 3 and 4 adopts nearly perfect geometry close to square planar (1, 4) or square pyramid (3) stereochemistry, respectively. The distortion of five coordinated copper(ii) ions in complex 2 indicates intermediate geometry between square pyramidal and trigonal pyramidal geometry. Further, the magnetic measurements have shown antiferromagnetic behaviour of the prepared complexes in a wide range of temperatures. The antiferromagnetic behaviour of 2 should originate from the superexchange interactions between each copper(ii) ion by the mixed chloride and μ4-O ion pathways. Besides, the weak antiferromagnetic character of 2 can be also attributed to the presence of intrachain exchange between dimeric units through double oxide ion. In complex 3, strong antiferromagnetic coupling between Cu(ii) centres in the Cu2O2Cl2 moiety is found. The cytotoxicity of all compounds was tested in vitro against various cancer cell lines: human lung adenocarcinoma (A549), human breast adenocarcinoma (MCF7), human prostate carcinoma; derived from metastatic site: brain (DU-145) and two normal cell lines: human embryonic kidney (HEK293T) and human keratinocyte (HaCat). Furthermore, Pluronic P-123 micelles loaded with selected complexes (1 and 3) were proposed to overcome low solubility and to minimize systemic side effects. More detailed study revealed that complex 3 loaded inside micelles causes DU-145 cells' death with simultaneous decrease of mitochondrial membrane potential and a high level of reactive oxygen species generation. The stability of the compounds 1-4 in DMSO was confirmed by UV-Vis and FT-IR spectra studies.
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Affiliation(s)
- Magdalena Malik
- Faculty of Chemistry, Wroclaw University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Anna Świtlicka
- Department of Crystallography, Institute of Chemistry, University of Silesia Szkolna 9 40-006 Katowice Poland
| | - Alina Bieńko
- Faculty of Chemistry, University of Wroclaw F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Urszula K Komarnicka
- Faculty of Chemistry, University of Wroclaw F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Dariusz C Bieńko
- Faculty of Chemistry, Wroclaw University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Sandra Kozieł
- Faculty of Chemistry, University of Wroclaw F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Agnieszka Kyzioł
- Faculty of Chemistry, Jagiellonian University Gronostajowa 2 30-387 Kraków Poland
| | - Tomasz Mazur
- Faculty of Chemistry, Wroclaw University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Barbara Machura
- Department of Crystallography, Institute of Chemistry, University of Silesia Szkolna 9 40-006 Katowice Poland
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Mazur T, Cepova L, Szymanski T, Rucki M. Analysis of the Planar Point Identification Accuracy in CMM Measurements. Sensors (Basel) 2022; 22:7005. [PMID: 36146353 PMCID: PMC9502713 DOI: 10.3390/s22187005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/02/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
The paper presents the results of the investigations on the direction-dependent accuracy of the point identification during contact probe measurements with a coordinate measuring machine (CMM). Considering the contact point identified by an orthogonal to the surface probe movement, the transformation of coordinates was made in order to calculate the displacement of the measured point. As a result, the positioning accuracy was estimated in three axes. The experiments demonstrated a strong dependence of the displacement on the declination angle. Moreover, it was found that the directional surface texture which provided different roughness in perpendicular directions, had an impact on the positioning accuracy.
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Affiliation(s)
- Tomasz Mazur
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, ul. Stasieckiego 54, 26-600 Radom, Poland
| | - Lenka Cepova
- Faculty of Mechanical Engineering, VSB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Czech Republic
| | - Tomasz Szymanski
- Mitutoyo Polska Sp. z o.o., ul. Graniczna 8A, 54-610 Wrocław, Poland
| | - Miroslaw Rucki
- Institute of Mechanical Science, Vilnius Gediminas Technical University, J. Basanaviciaus Str. 28, LT-03224 Vilnius, Lithuania
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Coleman E, Radix AE, Bouman WP, Brown GR, de Vries ALC, Deutsch MB, Ettner R, Fraser L, Goodman M, Green J, Hancock AB, Johnson TW, Karasic DH, Knudson GA, Leibowitz SF, Meyer-Bahlburg HFL, Monstrey SJ, Motmans J, Nahata L, Nieder TO, Reisner SL, Richards C, Schechter LS, Tangpricha V, Tishelman AC, Van Trotsenburg MAA, Winter S, Ducheny K, Adams NJ, Adrián TM, Allen LR, Azul D, Bagga H, Başar K, Bathory DS, Belinky JJ, Berg DR, Berli JU, Bluebond-Langner RO, Bouman MB, Bowers ML, Brassard PJ, Byrne J, Capitán L, Cargill CJ, Carswell JM, Chang SC, Chelvakumar G, Corneil T, Dalke KB, De Cuypere G, de Vries E, Den Heijer M, Devor AH, Dhejne C, D'Marco A, Edmiston EK, Edwards-Leeper L, Ehrbar R, Ehrensaft D, Eisfeld J, Elaut E, Erickson-Schroth L, Feldman JL, Fisher AD, Garcia MM, Gijs L, Green SE, Hall BP, Hardy TLD, Irwig MS, Jacobs LA, Janssen AC, Johnson K, Klink DT, Kreukels BPC, Kuper LE, Kvach EJ, Malouf MA, Massey R, Mazur T, McLachlan C, Morrison SD, Mosser SW, Neira PM, Nygren U, Oates JM, Obedin-Maliver J, Pagkalos G, Patton J, Phanuphak N, Rachlin K, Reed T, Rider GN, Ristori J, Robbins-Cherry S, Roberts SA, Rodriguez-Wallberg KA, Rosenthal SM, Sabir K, Safer JD, Scheim AI, Seal LJ, Sehoole TJ, Spencer K, St Amand C, Steensma TD, Strang JF, Taylor GB, Tilleman K, T'Sjoen GG, Vala LN, Van Mello NM, Veale JF, Vencill JA, Vincent B, Wesp LM, West MA, Arcelus J. Standards of Care for the Health of Transgender and Gender Diverse People, Version 8. Int J Transgend Health 2022; 23:S1-S259. [PMID: 36238954 PMCID: PMC9553112 DOI: 10.1080/26895269.2022.2100644] [Citation(s) in RCA: 455] [Impact Index Per Article: 227.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Background: Transgender healthcare is a rapidly evolving interdisciplinary field. In the last decade, there has been an unprecedented increase in the number and visibility of transgender and gender diverse (TGD) people seeking support and gender-affirming medical treatment in parallel with a significant rise in the scientific literature in this area. The World Professional Association for Transgender Health (WPATH) is an international, multidisciplinary, professional association whose mission is to promote evidence-based care, education, research, public policy, and respect in transgender health. One of the main functions of WPATH is to promote the highest standards of health care for TGD people through the Standards of Care (SOC). The SOC was initially developed in 1979 and the last version (SOC-7) was published in 2012. In view of the increasing scientific evidence, WPATH commissioned a new version of the Standards of Care, the SOC-8. Aim: The overall goal of SOC-8 is to provide health care professionals (HCPs) with clinical guidance to assist TGD people in accessing safe and effective pathways to achieving lasting personal comfort with their gendered selves with the aim of optimizing their overall physical health, psychological well-being, and self-fulfillment. Methods: The SOC-8 is based on the best available science and expert professional consensus in transgender health. International professionals and stakeholders were selected to serve on the SOC-8 committee. Recommendation statements were developed based on data derived from independent systematic literature reviews, where available, background reviews and expert opinions. Grading of recommendations was based on the available evidence supporting interventions, a discussion of risks and harms, as well as the feasibility and acceptability within different contexts and country settings. Results: A total of 18 chapters were developed as part of the SOC-8. They contain recommendations for health care professionals who provide care and treatment for TGD people. Each of the recommendations is followed by explanatory text with relevant references. General areas related to transgender health are covered in the chapters Terminology, Global Applicability, Population Estimates, and Education. The chapters developed for the diverse population of TGD people include Assessment of Adults, Adolescents, Children, Nonbinary, Eunuchs, and Intersex Individuals, and people living in Institutional Environments. Finally, the chapters related to gender-affirming treatment are Hormone Therapy, Surgery and Postoperative Care, Voice and Communication, Primary Care, Reproductive Health, Sexual Health, and Mental Health. Conclusions: The SOC-8 guidelines are intended to be flexible to meet the diverse health care needs of TGD people globally. While adaptable, they offer standards for promoting optimal health care and guidance for the treatment of people experiencing gender incongruence. As in all previous versions of the SOC, the criteria set forth in this document for gender-affirming medical interventions are clinical guidelines; individual health care professionals and programs may modify these in consultation with the TGD person.
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Affiliation(s)
- E Coleman
- Institute for Sexual and Gender Health, Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, MN, USA
| | - A E Radix
- Callen-Lorde Community Health Center, New York, NY, USA
- Department of Medicine, NYU Grossman School of Medicine, New York, NY, USA
| | - W P Bouman
- Nottingham Centre for Transgender Health, Nottingham, UK
- School of Medicine, University of Nottingham, Nottingham, UK
| | - G R Brown
- James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
- James H. Quillen VAMC, Johnson City, TN, USA
| | - A L C de Vries
- Department of Child and Adolescent Psychiatry, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Center of Expertise on Gender Dysphoria, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - M B Deutsch
- Department of Family & Community Medicine, University of California-San Francisco, San Francisco, CA, USA
- UCSF Gender Affirming Health Program, San Francisco, CA, USA
| | - R Ettner
- New Health Foundation Worldwide, Evanston, IL, USA
- Weiss Memorial Hospital, Chicago, IL, USA
| | - L Fraser
- Independent Practice, San Francisco, CA, USA
| | - M Goodman
- Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - J Green
- Independent Scholar, Vancouver, WA, USA
| | - A B Hancock
- The George Washington University, Washington, DC, USA
| | - T W Johnson
- Department of Anthropology, California State University, Chico, CA, USA
| | - D H Karasic
- University of California San Francisco, San Francisco, CA, USA
- Independent Practice at dankarasic.com
| | - G A Knudson
- University of British Columbia, Vancouver, Canada
- Vancouver Coastal Health, Vancouver, Canada
| | - S F Leibowitz
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - H F L Meyer-Bahlburg
- New York State Psychiatric Institute, New York, NY, USA
- Department of Psychiatry, Columbia University, New York, NY, USA
| | | | - J Motmans
- Transgender Infopunt, Ghent University Hospital, Gent, Belgium
- Centre for Research on Culture and Gender, Ghent University, Gent, Belgium
| | - L Nahata
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
- Endocrinology and Center for Biobehavioral Health, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - T O Nieder
- University Medical Center Hamburg-Eppendorf, Interdisciplinary Transgender Health Care Center Hamburg, Institute for Sex Research, Sexual Medicine and Forensic Psychiatry, Hamburg, Germany
| | - S L Reisner
- Harvard Medical School, Boston, MA, USA
- Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - C Richards
- Regents University London, UK
- Tavistock and Portman NHS Foundation Trust, London, UK
| | | | - V Tangpricha
- Division of Endocrinology, Metabolism & Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Atlanta VA Medical Center, Decatur, GA, USA
| | - A C Tishelman
- Boston College, Department of Psychology and Neuroscience, Chestnut Hill, MA, USA
| | - M A A Van Trotsenburg
- Bureau GenderPRO, Vienna, Austria
- University Hospital Lilienfeld-St. Pölten, St. Pölten, Austria
| | - S Winter
- School of Population Health, Curtin University, Perth, WA, Australia
| | - K Ducheny
- Howard Brown Health, Chicago, IL, USA
| | - N J Adams
- University of Toronto, Ontario Institute for Studies in Education, Toronto, Canada
- Transgender Professional Association for Transgender Health (TPATH)
| | - T M Adrián
- Asamblea Nacional de Venezuela, Caracas, Venezuela
- Diverlex Diversidad e Igualdad a Través de la Ley, Caracas, Venezuela
| | - L R Allen
- University of Nevada, Las Vegas, NV, USA
| | - D Azul
- La Trobe Rural Health School, La Trobe University, Bendigo, Australia
| | - H Bagga
- Monash Health Gender Clinic, Melbourne, Victoria, Australia
- Monash University, Melbourne, Victoria, Australia
| | - K Başar
- Department of Psychiatry, Hacettepe University, Ankara, Turkey
| | - D S Bathory
- Independent Practice at Bathory International PLLC, Winston-Salem, NC, USA
| | - J J Belinky
- Durand Hospital, Guemes Clinic and Urological Center, Buenos Aires, Argentina
| | - D R Berg
- National Center for Gender Spectrum Health, Institute for Sexual and Gender Health, Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, MN, USA
| | - J U Berli
- Oregon Health & Science University, Portland, OR, USA
| | - R O Bluebond-Langner
- NYU Langone Health, New York, NY, USA
- Hansjörg Wyss Department of Plastic Surgery, New York, NY, USA
| | - M-B Bouman
- Center of Expertise on Gender Dysphoria, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Plastic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, , Amsterdam, Netherlands
| | - M L Bowers
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Mills-Peninsula Medical Center, Burlingame, CA, USA
| | - P J Brassard
- GrS Montreal, Complexe CMC, Montreal, Quebec, Canada
- Université de Montreal, Quebec, Canada
| | - J Byrne
- University of Waikato/Te Whare Wānanga o Waikato, Hamilton/Kirikiriroa, New Zealand/Aotearoa
| | - L Capitán
- The Facialteam Group, Marbella International Hospital, Marbella, Spain
| | | | - J M Carswell
- Harvard Medical School, Boston, MA, USA
- Boston's Children's Hospital, Boston, MA, USA
| | - S C Chang
- Independent Practice, Oakland, CA, USA
| | - G Chelvakumar
- Nationwide Children's Hospital, Columbus, OH, USA
- The Ohio State University, College of Medicine, Columbus, OH, USA
| | - T Corneil
- School of Population & Public Health, University of British Columbia, Vancouver, BC, Canada
| | - K B Dalke
- Penn State Health, PA, USA
- Penn State College of Medicine, Hershey, PA, USA
| | - G De Cuypere
- Center for Sexology and Gender, Ghent University Hospital, Gent, Belgium
| | - E de Vries
- Nelson Mandela University, Gqeberha, South Africa
- University of Cape Town, Cape Town, South Africa
| | - M Den Heijer
- Center of Expertise on Gender Dysphoria, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Endocrinology, Amsterdam UMC Location Vrije Universiteit Amsterdam, , Amsterdam, Netherlands
| | - A H Devor
- University of Victoria, Victoria, BC, Canada
| | - C Dhejne
- ANOVA, Karolinska University Hospital, Stockholm, Sweden
- Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - A D'Marco
- UCTRANS-United Caribbean Trans Network, Nassau, The Bahamas
- D M A R C O Organization, Nassau, The Bahamas
| | - E K Edmiston
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - L Edwards-Leeper
- Pacific University, Hillsboro, OR, USA
- Independent Practice, Beaverton, OR, USA
| | - R Ehrbar
- Whitman Walker Health, Washington, DC, USA
- Independent Practice, Maryland, USA
| | - D Ehrensaft
- University of California San Francisco, San Francisco, CA, USA
| | - J Eisfeld
- Transvisie, Utrecht, The Netherlands
| | - E Elaut
- Center for Sexology and Gender, Ghent University Hospital, Gent, Belgium
- Department of Clinical Experimental and Health Psychology, Ghent University, Gent, Belgium
| | - L Erickson-Schroth
- The Jed Foundation, New York, NY, USA
- Hetrick-Martin Institute, New York, NY, USA
| | - J L Feldman
- Institute for Sexual and Gender Health, Institute for Sexual and Gender Health, Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, MN, USA
| | - A D Fisher
- Andrology, Women Endocrinology and Gender Incongruence, Careggi University Hospital, Florence, Italy
| | - M M Garcia
- Department of Urology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Departments of Urology and Anatomy, University of California San Francisco, San Francisco, CA, USA
| | - L Gijs
- Institute of Family and Sexuality Studies, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | | | - B P Hall
- Duke University Medical Center, Durham, NC, USA
- Duke Adult Gender Medicine Clinic, Durham, NC, USA
| | - T L D Hardy
- Alberta Health Services, Edmonton, Alberta, Canada
- MacEwan University, Edmonton, Alberta, Canada
| | - M S Irwig
- Harvard Medical School, Boston, MA, USA
- Beth Israel Deaconess Medical Center, Boston, MA, USA
| | | | - A C Janssen
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Northwestern Feinberg School of Medicine, Chicago, IL, USA
| | - K Johnson
- RMIT University, Melbourne, Australia
- University of Brighton, Brighton, UK
| | - D T Klink
- Department of Pediatrics, Division of Pediatric Endocrinology, Ghent University Hospital, Gent, Belgium
- Division of Pediatric Endocrinology and Diabetes, ZNA Queen Paola Children's Hospital, Antwerp, Belgium
| | - B P C Kreukels
- Center of Expertise on Gender Dysphoria, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Medical Psychology, Amsterdam UMC Location Vrije Universiteit Amsterdam, , Amsterdam, Netherlands
| | - L E Kuper
- Department of Psychiatry, Southwestern Medical Center, University of Texas, Dallas, TX, USA
- Department of Endocrinology, Children's Health, Dallas, TX, USA
| | - E J Kvach
- Denver Health, Denver, CO, USA
- University of Colorado School of Medicine, Aurora, CO, USA
| | - M A Malouf
- Malouf Counseling and Consulting, Baltimore, MD, USA
| | - R Massey
- WPATH Global Education Institute
- Department of Psychiatry & Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - T Mazur
- Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
- John R. Oishei Children's Hospital, Buffalo, NY, USA
| | - C McLachlan
- Professional Association for Transgender Health, South Africa
- Gender DynamiX, Cape Town, South Africa
| | - S D Morrison
- Division of Plastic Surgery, Seattle Children's Hospital, Seattle, WA, USA
- Division of Plastic Surgery, Department of Surgery, University of Washington Medical Center, Seattle, WA, USA
| | - S W Mosser
- Gender Confirmation Center, San Francisco, CA, USA
- Saint Francis Memorial Hospital, San Francisco, CA, USA
| | - P M Neira
- Johns Hopkins Center for Transgender Health, Baltimore, MD, USA
- Johns Hopkins Medicine Office of Diversity, Inclusion and Health Equity, Baltimore, MD, USA
| | - U Nygren
- Division of Speech and Language Pathology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Speech and Language Pathology, Medical Unit, Karolinska University Hospital, Stockholm, Sweden
| | - J M Oates
- La Trobe University, Melbourne, Australia
- Melbourne Voice Analysis Centre, East Melbourne, Australia
| | - J Obedin-Maliver
- Stanford University School of Medicine, Department of Obstetrics and Gynecology, Palo Alto, CA, USA
- Department of Epidemiology and Population Health, Stanford, CA, USA
| | - G Pagkalos
- Independent PracticeThessaloniki, Greece
- Military Community Mental Health Center, 424 General Military Training Hospital, Thessaloniki, Greece
| | - J Patton
- Talkspace, New York, NY, USA
- CytiPsychological LLC, San Diego, CA, USA
| | - N Phanuphak
- Institute of HIV Research and Innovation, Bangkok, Thailand
| | - K Rachlin
- Independent Practice, New York, NY, USA
| | - T Reed
- Gender Identity Research and Education Society, Leatherhead, UK
| | - G N Rider
- National Center for Gender Spectrum Health, Institute for Sexual and Gender Health, Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, MN, USA
| | - J Ristori
- Andrology, Women Endocrinology and Gender Incongruence, Careggi University Hospital, Florence, Italy
| | | | - S A Roberts
- Harvard Medical School, Boston, MA, USA
- Division of Endocrinology, Boston's Children's Hospital, Boston, MA, USA
| | - K A Rodriguez-Wallberg
- Department of Reproductive Medicine, Karolinska University Hospital, Stockholm, Sweden
- Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden
| | - S M Rosenthal
- Division of Pediatric Endocrinology, UCSF, San Francisco, CA, USA
- UCSF Child and Adolescent Gender Center
| | - K Sabir
- FtM Phoenix Group, Krasnodar Krai, Russia
| | - J D Safer
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Mount Sinai Center for Transgender Medicine and Surgery, New York, NY, USA
| | - A I Scheim
- Epidemiology and Biostatistics, Dornsife School of Public Health, Drexel University, Philadelphia, PA, USA
- Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, Ontario, Canada
| | - L J Seal
- Tavistock and Portman NHS Foundation Trust, London, UK
- St George's University Hospitals NHS Foundation Trust, London, UK
| | | | - K Spencer
- National Center for Gender Spectrum Health, Institute for Sexual and Gender Health, Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, MN, USA
| | - C St Amand
- University of Houston, Houston, TX, USA
- Mayo Clinic, Rochester, MN, USA
| | - T D Steensma
- Center of Expertise on Gender Dysphoria, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Medical Psychology, Amsterdam UMC Location Vrije Universiteit Amsterdam, , Amsterdam, Netherlands
| | - J F Strang
- Children's National Hospital, Washington, DC, USA
- George Washington University School of Medicine, Washington, DC, USA
| | - G B Taylor
- Atrium Health Department of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, Charlotte, NC, USA
| | - K Tilleman
- Department for Reproductive Medicine, Ghent University Hospital, Gent, Belgium
| | - G G T'Sjoen
- Center for Sexology and Gender, Ghent University Hospital, Gent, Belgium
- Department of Endocrinology, Ghent University Hospital, Gent, Belgium
| | - L N Vala
- Independent Practice, Campbell, CA, USA
| | - N M Van Mello
- Center of Expertise on Gender Dysphoria, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Obstetrics and Gynaecology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - J F Veale
- School of Psychology, University of Waikato/Te Whare Wānanga o Waikato, Hamilton/Kirikiriroa, New Zealand/Aotearoa
| | - J A Vencill
- Department of Psychiatry & Psychology, Mayo Clinic, Rochester, MN, USA
- Division of General Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - B Vincent
- Trans Learning Partnership at https://spectra-london.org.uk/trans-learning-partnership, UK
| | - L M Wesp
- College of Nursing, University of Wisconsin MilwaukeeMilwaukee, WI, USA
- Health Connections Inc., Glendale, WI, USA
| | - M A West
- North Memorial Health Hospital, Robbinsdale, MN, USA
- University of Minnesota, Minneapolis, MN, USA
| | - J Arcelus
- School of Medicine, University of Nottingham, Nottingham, UK
- Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
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9
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Jamróz E, Cabaj A, Tkaczewska J, Kawecka A, Krzyściak P, Szuwarzyński M, Mazur T, Juszczak L. Incorporation of Curcumin Extract with Lemongrass Essential Oil into the Middle Layer of Triple-Layered Films Based on Furcellaran/Chitosan/Gelatin Hydrolysates - In Vitro and In Vivo Studies on Active and Intelligent Properties. Food Chem 2022; 402:134476. [DOI: 10.1016/j.foodchem.2022.134476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 01/11/2023]
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10
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Krzysiak Z, Gevorkyan E, Nerubatskyi V, Rucki M, Chyshkala V, Caban J, Mazur T. Peculiarities of the Phase Formation during Electroconsolidation of Al 2O 3-SiO 2-ZrO 2 Powders Mixtures. Materials (Basel) 2022; 15:6073. [PMID: 36079454 PMCID: PMC9457512 DOI: 10.3390/ma15176073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
This paper is devoted to the sintering process of Al2O3-SiO2-ZrO2 ceramics. The studied method was electroconsolidation with directly applied electric current. This method provides substantial improvements to the mechanical properties of the sintered samples compared to the traditional sintering in the air. The research covered elemental and phase analysis of the samples, which revealed phase transition of high-alumina solid solutions into mullite and corundum. Zirconia was represented mainly by tetragonal phase, but monoclinic phase was present, too. Electroconsolidation enabled samples to reach a density of 3.0 g/cm3 at 1300 °C, while the sample prepared by traditional sintering method obtained it only at 1700 °C. For the composite Al2O3-20 wt.% SiO2-10 wt.% ZrO2 fabricated by electroconsolidation, it was demonstrated that fracture toughness was higher by 20-30%, and hardness was higher by 15-20% compared to that of samples sintered traditionally. Similarly, the samples fabricated by electroconsolidation exhibited elastic modulus E higher by 15-20%. The hypothesis was proposed that the difference in mechanical and physical properties could be attributed to the peculiarities of phase formation processes during electroconsolidation.
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Affiliation(s)
- Zbigniew Krzysiak
- Faculty of Production Engineering, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland
| | - Edwin Gevorkyan
- Wagon Engineering and Production Quality, Ukraine State University of Railway Transport, 7 Feuerbach Sq., 61010 Kharkiv, Ukraine
| | - Volodymyr Nerubatskyi
- Wagon Engineering and Production Quality, Ukraine State University of Railway Transport, 7 Feuerbach Sq., 61010 Kharkiv, Ukraine
| | - Mirosław Rucki
- Institute of Mechanical Science, Vilnius Gediminas Technical University, J. Basanaviciaus str. 28, LT-03224 Vilnius, Lithuania
| | - Volodymyr Chyshkala
- Department of Reactor Engineering Materials and Physical Technologies, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine
- Sieć Badawcza Łukasiewicz, Instytut Technologii Ekspoatacji w Radomiu, ul. K.Pułaskiego 6/10, 26-600 Radom, Poland
| | - Jacek Caban
- Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland
| | - Tomasz Mazur
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland
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11
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Palma J, Antoniewicz J, Borecki K, Tejchman K, Skonieczna-Żydecka K, Maciejewska-Markiewicz D, Ryterska K, Komorniak N, Czerwińska-Rogowska M, Wolska A, Mruk-Mazurkiewicz H, Gudan A, Mazur T, Mijal P, Budawski R, Stachowska Z, Marlicz W, Stachowska E. Irritable Bowel Syndrome Prevalence among Participants of Woodstock Rock Festival in Poland Based on Rome IV Criteria Questionnaire. Int J Environ Res Public Health 2021; 18:11464. [PMID: 34769979 PMCID: PMC8583057 DOI: 10.3390/ijerph182111464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a chronic functional gastrointestinal disorder (FGID), in which etiology and pathogenesis are not fully explored. There is an ongoing need for more population studies adhering to new ROME IV criteria. In the current study, which follows our previous investigation among participants of the Woodstock Rock Festival in Poland, we aimed to evaluate the prevalence of IBS and its relation to age, gender, education, and IBS type. METHODS Rome IV criteria questionnaire was used to assess abdominal complaints of 386 participants of the Woodstock Rock festival 2018. RESULTS Analyzed data revealed that Rome IV criteria were met by 42 participants (11.41%), 11 men and 31 women (p = 0.0028), with following types of IBS: IBS-M (mixed form) 55%, IBS-D (with diarrhea) 33%, IBS-U (unclassified) 10%, IBS-C (with constipation) 2%. No statistically significant correlation between IBS prevalence and age, gender, or education (p > 0.05) was found. CONCLUSIONS The prevalence of IBS among major rock festival participants in Poland was high. Women met the criteria more often than men, which is consistent with global epidemiology for many years. Among participants of the Woodstock Rock Festival, the most frequent subtype was IBS-M, the rarest-IBS-C. There is a need of conducting cohort studies in bigger groups in our population.
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Affiliation(s)
- Joanna Palma
- Department of Biochemical Sciences, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.P.); (K.B.); (K.S.-Ż.); (H.M.-M.)
| | - Justyna Antoniewicz
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Krzysztof Borecki
- Department of Biochemical Sciences, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.P.); (K.B.); (K.S.-Ż.); (H.M.-M.)
| | - Karol Tejchman
- Department of General Surgery and Transplantation, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland;
| | - Karolina Skonieczna-Żydecka
- Department of Biochemical Sciences, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.P.); (K.B.); (K.S.-Ż.); (H.M.-M.)
| | - Dominika Maciejewska-Markiewicz
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Karina Ryterska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Natalia Komorniak
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Maja Czerwińska-Rogowska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Anna Wolska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Honorata Mruk-Mazurkiewicz
- Department of Biochemical Sciences, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.P.); (K.B.); (K.S.-Ż.); (H.M.-M.)
| | - Anna Gudan
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Tomasz Mazur
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Przemysław Mijal
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Robert Budawski
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Zofia Stachowska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
| | - Wojciech Marlicz
- Department of Gastroenterology, Pomeranian Medical University in Szczecin, 71-252 Szczecin, Poland;
| | - Ewa Stachowska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.A.); (D.M.-M.); (K.R.); (N.K.); (M.C.-R.); (A.W.); (A.G.); (T.M.); (P.M.); (R.B.); (Z.S.)
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12
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Pogorzelska-Nowicka E, Hanula MM, Brodowska-Trębacz M, Górska-Horczyczak E, Jankiewicz U, Mazur T, Marcinkowska-Lesiak M, Półtorak A, Wierzbicka A. The Effect of Cold Plasma Pretreatment on Water-Suspended Herbs Measured in the Content of Bioactive Compounds, Antioxidant Activity, Volatile Compounds and Microbial Count of Final Extracts. Antioxidants (Basel) 2021; 10:antiox10111740. [PMID: 34829611 PMCID: PMC8615236 DOI: 10.3390/antiox10111740] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Cold plasma is a new technology of promising potential to use as a part of technological extraction lines constructed to implement green chemistry solutions or simply to reduce resources in solvent-based extraction lines. The present study was undertaken to verify the effect of nitrogen cold plasma pre-treatment conducted for 8 min (20 kHz) on the content of antioxidants, antioxidant activity, the profile of volatile compounds, microbial count, pH and color measured in herb extracts (12 herbs: Echinacea purpurea; Salvia officinalis; Urtica dioica; Polygonum aviculare; Vaccinium myrtillus; Taraxacum officinale; Hypericum perforatum; Achillea millefolium; Sanguisorba officinalis; Leonurus cardiaca; Ballota nigra; Andrographis paniculata) obtained with its usage. The surface morphology of extracted herbs was examined as well. Herbs used for extraction were ground and suspended in water before cold plasma treatment, which is a novel approach not studied before. Most plasma-treated extracts were characterized by a higher content of polyphenols (11 out of 12). Content of flavonoids and anthocyanins increased in four extracts and in the case of anthocyanins was significantly higher in comparison to control (up to 77%). The antioxidant activity measured at least by one method (ABTS, DPPH, FRAP) was also higher in nine plasma-treated solutions. Moreover, plasma decreased total aerobic bacteria, affected the color and increased pH of the extracts. The surface structure of the plant material after the extraction process was significantly damaged, which probably led to a higher extraction yield of bioactive compounds and in consequence to the higher antioxidant activity of extracts obtained with the cold plasma treatment.
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Affiliation(s)
- Ewelina Pogorzelska-Nowicka
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
- Correspondence: ; Tel.: +48-22-59-37-014
| | - Monika Maria Hanula
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
| | - Marta Brodowska-Trębacz
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
| | - Elżbieta Górska-Horczyczak
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
| | - Urszula Jankiewicz
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences—SGGW, 159 Street, 02-776 Warsaw, Poland;
| | - Tomasz Mazur
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland;
| | - Monika Marcinkowska-Lesiak
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
| | - Andrzej Półtorak
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
| | - Agnieszka Wierzbicka
- Department of Technique and Food Product Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 c Street, 02-776 Warsaw, Poland; (M.M.H.); (M.B.-T.); (E.G.-H.); (M.M.-L.); (A.P.); (A.W.)
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13
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Gevorkyan E, Rucki M, Krzysiak Z, Chishkala V, Zurowski W, Kucharczyk W, Barsamyan V, Nerubatskyi V, Mazur T, Morozow D, Siemiątkowski Z, Caban J. Analysis of the Electroconsolidation Process of Fine-Dispersed Structures Out of Hot Pressed Al 2O 3-WC Nanopowders. Materials (Basel) 2021; 14:ma14216503. [PMID: 34772030 PMCID: PMC8585290 DOI: 10.3390/ma14216503] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/22/2021] [Accepted: 10/27/2021] [Indexed: 11/16/2022]
Abstract
Fabrication of alumina–tungsten carbide nanocomposite was investigated. Characteristics of the densification and sintering were analyzed considering both the nano-size particle starting powders and the processing stages. Different heating rates were generated during densification and consolidation with a maximal load was applied only after a temperature of 1000 °C was reached. Due to the varying dominance of different physical processes affecting the grains, appropriate heating rates and pressure at different stages ensured that a structure with submicron grains was obtained. With directly applied alternating current, it was found that the proportion Al2O3 (50 wt.%)–WC provided the highest fracture toughness, and a sintering temperature above 1600 °C was found to be disadvantageous. High heating rates and a short sintering time enabled the process to be completed in 12 min, saving energy and time.
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Affiliation(s)
- Edwin Gevorkyan
- Wagon Engineering and Production Quality, Ukraine State University of Railway Transport, 7 Feuerbach Sq., 61010 Kharkiv, Ukraine; (E.G.); (V.N.)
| | - Mirosław Rucki
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland; (W.Z.); (W.K.); (T.M.); (D.M.); (Z.S.)
- Correspondence: (M.R.); (Z.K.)
| | - Zbigniew Krzysiak
- Faculty of Production Engineering, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland
- Correspondence: (M.R.); (Z.K.)
| | - Volodymyr Chishkala
- Department of Reactor Engineering Materials and Physical Technologies, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine;
| | - Wojciech Zurowski
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland; (W.Z.); (W.K.); (T.M.); (D.M.); (Z.S.)
| | - Wojciech Kucharczyk
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland; (W.Z.); (W.K.); (T.M.); (D.M.); (Z.S.)
| | - Voskan Barsamyan
- Chair of Applied Physics, National Polytechnic University of Armenia, Vanadzor Branch, Vanadzor 2011, Armenia;
| | - Volodymyr Nerubatskyi
- Wagon Engineering and Production Quality, Ukraine State University of Railway Transport, 7 Feuerbach Sq., 61010 Kharkiv, Ukraine; (E.G.); (V.N.)
| | - Tomasz Mazur
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland; (W.Z.); (W.K.); (T.M.); (D.M.); (Z.S.)
| | - Dmitrij Morozow
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland; (W.Z.); (W.K.); (T.M.); (D.M.); (Z.S.)
| | - Zbigniew Siemiątkowski
- Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, 26-600 Radom, Poland; (W.Z.); (W.K.); (T.M.); (D.M.); (Z.S.)
| | - Jacek Caban
- Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland;
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14
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Palumbo G, Dunikowski D, Wirecka R, Mazur T, Lelek-Borkowska U, Wawer K, Banaś J. Effect of Grain Size on the Corrosion Behavior of Fe-3wt.%Si-1wt.%Al Electrical Steels in Pure Water Saturated with CO 2. Materials (Basel) 2021; 14:5084. [PMID: 34501174 PMCID: PMC8433828 DOI: 10.3390/ma14175084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022]
Abstract
The corrosion behavior of two silicon steels with the same chemical composition but different grains sizes (i.e., average grain area of 115.6 and 4265.9 µm2) was investigated by metallographic microscope, gravimetric, electrochemical and surface analysis techniques. The gravimetric and electrochemical results showed that the corrosion rate increased with decreasing the grain size. The scanning electron microscopy/energy dispersive x-ray spectroscopy and X-ray photoelectron spectroscopyanalyses revealed formation of a more homogeneous and compact corrosion product layer on the coarse-grained steel compared to fine-grained material. The Volta potential analysis, carried out on both steels, revealed formation of micro-galvanic sites at the grain boundaries and triple junctions. The results indicated that the decrease in corrosion resistance in the fine-grained steel could be attributed to the higher density of grain boundaries (e.g., a higher number of active sites and defects) brought by the refinement. The higher density of active sites at grain boundaries promote the metal dissolution of the and decreased the stability of the corrosion product layerformed on the metal surface.
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Affiliation(s)
- Gaetano Palumbo
- Faculty of Foundry Engineering, Department of Chemistry and Corrosion of Metals, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Krakow, Poland; (D.D.); (U.L.-B.); (J.B.)
| | - Dawid Dunikowski
- Faculty of Foundry Engineering, Department of Chemistry and Corrosion of Metals, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Krakow, Poland; (D.D.); (U.L.-B.); (J.B.)
| | - Roma Wirecka
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Kraków, Poland; (R.W.); (T.M.)
- Department of Condensed Matter Physics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Krakow, Poland
| | - Tomasz Mazur
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Kraków, Poland; (R.W.); (T.M.)
| | - Urszula Lelek-Borkowska
- Faculty of Foundry Engineering, Department of Chemistry and Corrosion of Metals, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Krakow, Poland; (D.D.); (U.L.-B.); (J.B.)
| | - Kinga Wawer
- Łukasiewicz Research Network–Institute of Aviation, Al. Krakowska 110/114, 02-256 Warsaw, Poland;
| | - Jacek Banaś
- Faculty of Foundry Engineering, Department of Chemistry and Corrosion of Metals, AGH University of Science and Technology, Mickiewicza St. 30, 30-059 Krakow, Poland; (D.D.); (U.L.-B.); (J.B.)
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15
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Demikhova N, Mazur T. The Correlation Between Polymorphism Of Cyp7A1 Gene And Index Of Left Ventricular Mass For Hypertensive Patients With Diabetic Nephropathy. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Mazur T, Zawal P, Szaciłowski K. Synaptic plasticity, metaplasticity and memory effects in hybrid organic-inorganic bismuth-based materials. Nanoscale 2019; 11:1080-1090. [PMID: 30574642 DOI: 10.1039/c8nr09413f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Since the discovery of memristors, their application in computing systems utilizing multivalued logic and a neuromimetic approach is of great interest. A thin film device made of methylammonium bismuth iodide exhibits a wide variety of neuromorphic effects simultaneously, and is thus able to mimic synaptic behaviour and learning phenomena. Standard learning protocols, such as spike-timing dependent plasticity and spike-rate dependent plasticity might be further modulated via metaplasticity in order to amplify or alter changes in the synaptic weight. Moreover, transfer of information from short-term to long-term memory is observed. These effects show that the diversity of functions of memristive devices can be strongly affected by the pre-treatment of the sample. Modulation of the resistive switching amplitude is of great importance for the application of memristive elements in computational applications, as additional sub-states might be utilized in multi-valued logic systems and metaplasticity and memory consolidation will contribute to the development of more efficient bioinspired computational schemes.
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Affiliation(s)
- Tomasz Mazur
- Academic Centre for Materials and Nanotechnology AGH University of Science and Technology al. A. Mickiewicza 30, 30-059 Kraków, Poland.
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17
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Stachowska E, Maciejewska D, Ryterska K, Baszuk P, Skonieczna-Żydecka K, Czerwińska-Rogowska M, Palma J, Gudan A, Mruk H, Wolska A, Mazur T, Paszkiewicz D, Stachowska Z, Stachowski A, Marlicz W. Abdominal Pain and Disturbed Bowel Movements are Frequent among Young People. A Population Based Study in Young Participants of the Woodstock Rock Festival in Poland. J Gastrointestin Liver Dis 2018; 27:379-383. [PMID: 30574619 DOI: 10.15403/jgld.2014.1121.274.pol] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
BACKGROUND AND AIMS Functional gastrointestinal disorders are prevalent worldwide and alterations of gut-brain axis and intestinal barrier integrity may play a pivotal role in both the pathophysiology and clinical course of these bowel malfunctions. We aimed to assess the prevalence of abdominal pain in a selected adult population of Poland to determine potential environmental factors associated with gastrointestinal complaints. METHODS There were 1479 individuals - 657 women (44.42%) and 822 men (55.58%), aged 24.20±6.08 years. The responders fulfilled an authors' questionnaire based on Rome II and III criteria focused on the abdominal pain prevalence and environmental factors involved in its occurrence. RESULTS The frequency of abdominal pain was found to be as high as 19.2%. Male gender (n=822) and basic education level (n=151) lowered the risk of abdominal pain occurrence (OR=0.7, p<0.012 and OR=0.5, p<0.021, respectively). Psychological distress, proton pump inhibitors (PPIs) and antibiotics usage were found as risk factors of abdominal pain (OR=2.503, p<0.01; OR=3.308, p<0.01; OR=3.105, p<0.01, respectively). CONCLUSIONS Abdominal pain is prevalent in young adult inhabitants of Poland, especially in women. Intense psychological stress, as well as PPIs and antibiotics usage elevate the risk.
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Affiliation(s)
- Ewa Stachowska
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland.
| | - Dominika Maciejewska
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | - Karina Ryterska
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | - Piotr Baszuk
- Dept. Genetics and Pathomorphology, Pomeranian Medical University, Szczecin. Poland
| | | | | | - Joanna Palma
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | - Anna Gudan
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | - Honorata Mruk
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | - Anna Wolska
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | - Tomasz Mazur
- Dept. Biochemistry and Human Nutrition, Pomeranian Medical University, Szczecin, Poland
| | | | | | | | - Wojciech Marlicz
- Dept. Gastroenterology, Pomeranian Medical University, Szczecin, Poland
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18
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Skonieczna-Żydecka K, Stachowska E, Maciejewska D, Ryterska K, Palma J, Czerwińska-Rogowska M, Kaczmarczyk M, Gudan A, Mruk H, Świniarska B, Kałduńska J, Stachowska Z, Mijal P, Mazur T, Kupczyński M, Marlicz W. The Digestive Health among Participants of the Woodstock Rock Festival in Poland-A Cross-Sectional Survey. Int J Environ Res Public Health 2018; 15:E2256. [PMID: 30326654 PMCID: PMC6210346 DOI: 10.3390/ijerph15102256] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/08/2018] [Accepted: 10/11/2018] [Indexed: 12/12/2022]
Abstract
Alterations of gut microbiota, intestinal barrier and the gut-brain axis may be involved in pathophysiology of functional gastrointestinal disorders. Our aim was to assess the prevalence of digestive tract symptoms and identify common variables potentially disrupting the gut-brain axis among participants of the Woodstock Festival Poland, 2017. In total 428 people filled in a questionnaire assessing health of their digestive tract. The investigator collected answers on an electronic device, while the study participant responded using a paper version of the same questionnaire. Liver and gallbladder related symptoms were the most prevalent among our study group (n = 266, 62%), however symptoms related to altered intestinal permeability were found to be the most intensive complaints. In females the intensity of gastrointestinal complaints was higher compared to men (p < 0.05), as well as the incidence of factors with the potential to alter gut-brain axis (p < 0.0001). Chronic psychological distress, intake of non-steroidal anti-inflammatory drugs (NSAIDs) and antibiotics, were the most common associations with gastrointestinal symptoms, which were the most prevalent in females. Further attention should be focused on stress as one of the main factors negatively influencing public health.
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Affiliation(s)
| | - Ewa Stachowska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Dominika Maciejewska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Karina Ryterska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Joanna Palma
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Maja Czerwińska-Rogowska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Mariusz Kaczmarczyk
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, 70-111 Szczecin, Poland.
| | - Anna Gudan
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Honorata Mruk
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Barbara Świniarska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Justyna Kałduńska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Zofia Stachowska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Przemysław Mijal
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Tomasz Mazur
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Maciej Kupczyński
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, 71-460 Szczecin, Poland.
| | - Wojciech Marlicz
- Department of Gastroenterology, Pomeranian Medical University, 71-252 Szczecin, Poland.
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19
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Wlaźlak E, Blachecki A, Bisztyga-Szklarz M, Klejna S, Mazur T, Mech K, Pilarczyk K, Przyczyna D, Suchecki M, Zawal P, Szaciłowski K. Heavy pnictogen chalcohalides: the synthesis, structure and properties of these rediscovered semiconductors. Chem Commun (Camb) 2018; 54:12133-12162. [DOI: 10.1039/c8cc05149f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Heavy pnictogen chalcohalides offer various shades from the same palette, like “Paysage” by Nicolas de Staël. Their versatility and tunability lead to a new world of possible applications.
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Affiliation(s)
- Ewelina Wlaźlak
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
- Jagiellonian University
- Faculty of Chemistry
| | - Andrzej Blachecki
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
- AGH University of Science and Technology, Faculty of Non-Ferrous Metals
- 30-059 Krakow
| | - Magdalena Bisztyga-Szklarz
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Sylwia Klejna
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Tomasz Mazur
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Krzysztof Mech
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Kacper Pilarczyk
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Dawid Przyczyna
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- 30-059 Krakow
| | - Maciej Suchecki
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- 30-059 Krakow
| | - Piotr Zawal
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- 30-059 Krakow
| | - Konrad Szaciłowski
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
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20
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Mazur T, Lach S, Grzybowski BA. Heterogeneous Catalysis "On Demand": Mechanically Controlled Catalytic Activity of a Metal Surface. ACS Appl Mater Interfaces 2017; 9:44264-44269. [PMID: 29178783 DOI: 10.1021/acsami.7b15253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A metal surface passivated with a tightly packed self-assembled monolayer (SAM) can be made catalytically active upon the metal's mechanical deformation. This deformation renders the SAM sparser and exposes additional catalytic sites on the metal's surface. If the deformation is elastic, return of the metal to the original shape "heals" the SAM and nearly extinguishes the catalytic activity. Kelvin probe force microscopy and theoretical considerations both indicate that the catalytic domains "opening up" in the deformed SAM are of nanoscopic dimensions.
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Affiliation(s)
- Tomasz Mazur
- IBS Center for Soft and Living Matter and the Department of Chemistry, Ulsan National Institute of Science and Technology , Ulsan, South Korea
| | - Slawomir Lach
- IBS Center for Soft and Living Matter and the Department of Chemistry, Ulsan National Institute of Science and Technology , Ulsan, South Korea
| | - Bartosz A Grzybowski
- IBS Center for Soft and Living Matter and the Department of Chemistry, Ulsan National Institute of Science and Technology , Ulsan, South Korea
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21
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Jeong YK, Lee YM, Yun J, Mazur T, Kim M, Kim YJ, Dygas M, Choi SH, Kim KS, Kwon OH, Yoon SM, Grzybowski BA. Tunable Photoluminescence across the Visible Spectrum and Photocatalytic Activity of Mixed-Valence Rhenium Oxide Nanoparticles. J Am Chem Soc 2017; 139:15088-15093. [DOI: 10.1021/jacs.7b07494] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yong-Kwang Jeong
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Young Min Lee
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jeonghun Yun
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Tomasz Mazur
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Minju Kim
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Young Jae Kim
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Miroslaw Dygas
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Sun Hee Choi
- Pohang
Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Kwang S. Kim
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Oh-Hoon Kwon
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Seok Min Yoon
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Bartosz A. Grzybowski
- Center
for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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22
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Mazur T, Grzybowski BA. Theoretical basis for the stabilization of charges by radicals on electrified polymers. Chem Sci 2017; 8:2025-2032. [PMID: 28451320 PMCID: PMC5398273 DOI: 10.1039/c6sc02672a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 11/14/2016] [Indexed: 01/24/2023] Open
Abstract
Quantum mechanical calculations at various levels of theory indicate that charges (both "+" and "-") on organic polymers can be stabilized by radicals on nearby polymer chains. The stabilization mechanism is based on the formation of intermolecular odd-electron, two-center bonds with possible concomitant spin density redistribution (depending on the polymer and the number and type of proximal heteroatoms). This result is in line with our previous experimental demonstrations that on various types of polymers charged by contact electrification, radicals co-localize and help stabilize proximal charges (of either polarity). The principle of intramolecular charge-radical stabilization we now confirm on a fundamental level might have ramifications for the design of other macromolecular systems in which chemical reactivity is controlled by radicals flanking the charged groups or by charged groups flanking the radicals.
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Affiliation(s)
- Tomasz Mazur
- Institute for Basic Science , IBS Center for Soft and Living Matter , UNIST , Ulsan , 689-798 , Republic of Korea .
- Department of Chemistry , UNIST , Ulsan , 689-798 , Republic of Korea
| | - Bartosz A Grzybowski
- Institute for Basic Science , IBS Center for Soft and Living Matter , UNIST , Ulsan , 689-798 , Republic of Korea .
- Department of Chemistry , UNIST , Ulsan , 689-798 , Republic of Korea
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23
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Chang X, Mazur T, Yang D. TU-FG-209-12: Treatment Site and View Recognition in X-Ray Images with Hierarchical Multiclass Recognition Models. Med Phys 2016. [DOI: 10.1118/1.4957582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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24
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Cardenas M, Mazur T, Li H, Mutic S, Bradley J, Tsien C, Green O. SU-F-J-102: Lower Esophagus Margin Implications Based On Rapid Computational Algorithm for SBRT. Med Phys 2016. [DOI: 10.1118/1.4956010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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25
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Wang Y, Mazur T, Green O, Hu Y, Li H, Rodriguez V, Wooten H, Yang D, Zhao T, Mutic S, Li H. TH-AB-BRA-07: PENELOPE-Based GPU-Accelerated Dose Calculation System Applied to MRI-Guided Radiation Therapy. Med Phys 2016. [DOI: 10.1118/1.4958058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Mazur T, Gach H, Chundury A, Fischer-Valuck B, Huang J, Thomas M, Green O. TU-AB-BRA-10: Treatment of Gastric MALT Lymphoma Utilizing a Magnetic Resonance Image-Guided Radiation Therapy (MR-IGRT) System: Evaluation of Gating Feasibility. Med Phys 2016. [DOI: 10.1118/1.4957420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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27
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Mazur T, Cardenas M, Li H, Mutic S, Bradley J, Tsien C, Green O. TU-AB-BRA-08: Slice by Slice Approach to Quantifying Inter-Fractional Organ Motion. Med Phys 2016. [DOI: 10.1118/1.4957418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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28
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Liu S, Mazur T, Li H, Green O, Sun B, Mutic S, Yang D. SU-F-T-275: A Correlation Study On 3D Fluence-Based QA and 2D Dose Measurement-Based QA. Med Phys 2016. [DOI: 10.1118/1.4956415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Mazur T, Wang Y, Fischer-Valuck B, Acharya S, Kashani R, Li H, Yang D, Zoberi I, Thomas M, Mutic S, Li H. SU-F-303-11: Implementation and Applications of Rapid, SIFT-Based Cine MR Image Binning and Region Tracking. Med Phys 2015. [DOI: 10.1118/1.4925238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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31
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Mazur T, Xiao Z, Driewer J, Wang Y, Li H. WE-AB-BRB-05: Toward a 2D Water-Equivalent Dosimetry Panel Using KCl:Eu2+. Med Phys 2015. [DOI: 10.1118/1.4925846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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32
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Wang Y, Mazur T, Green O, Hu Y, Wooten H, Yang D, Zhao T, Mutic S, Li H. SU-E-T-36: A GPU-Accelerated Monte-Carlo Dose Calculation Platform and Its Application Toward Validating a ViewRay Beam Model. Med Phys 2015. [DOI: 10.1118/1.4924397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Abstract
Social and emotional development is shaped by familial and extra-familial experiences especially interactions with peers. Children and adolescents with physical, behavioral or developmental differences, such as youth with disorders of sex development (DSD), may not benefit to the same degree as other children and adolescents from experiences with peers. This paper reviews current thinking about the features and effects of experiences with peers and the potential challenges of peer interactions for children and adolescents with DSD. We review findings from studies of adjustment for individuals with DSD. We finish the paper with a brief outline of a research agenda to promote the understanding of adjustment of individuals with DSD.
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Affiliation(s)
- W M Bukowski
- Department of Psychology, Concordia University, Montréal, Québec, Canada
| | - E McCauley
- Department of Psychology, Seattle Children's Hospital, Seattle, University of Washington, Washington, USA
| | - T Mazur
- Department of Psychiatry and Pediatrics, University at Buffalo, Buffalo, New York, USA
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Pietrzyk P, Mazur T, Podolska-Serafin K, Chiesa M, Sojka Z. Intimate Binding Mechanism and Structure of Trigonal Nickel(I) Monocarbonyl Adducts in ZSM-5 Zeolite—Spectroscopic Continuous Wave EPR, HYSCORE, and IR Studies Refined with DFT Quantification of Disentangled Electron and Spin Density Redistributions along σ and π Channels. J Am Chem Soc 2013; 135:15467-78. [DOI: 10.1021/ja405874t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Piotr Pietrzyk
- Faculty
of Chemistry, Jagiellonian University, ul. R. Ingardena 3, 30-060 Krakow, Poland
| | - Tomasz Mazur
- Faculty
of Chemistry, Jagiellonian University, ul. R. Ingardena 3, 30-060 Krakow, Poland
| | | | - Mario Chiesa
- Dipartimento
di Chimica, Università di Torino and NIS Centre of Excellence, via
P. Giuria 7, 10125, Torino, Italy
| | - Zbigniew Sojka
- Faculty
of Chemistry, Jagiellonian University, ul. R. Ingardena 3, 30-060 Krakow, Poland
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Pietrzyk P, Podolska K, Mazur T, Sojka Z. Heterogeneous Binding of Dioxygen: EPR and DFT Evidence for Side-On Nickel(II)–Superoxo Adduct with Unprecedented Magnetic Structure Hosted in MFI Zeolite. J Am Chem Soc 2011; 133:19931-43. [DOI: 10.1021/ja208387q] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Piotr Pietrzyk
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Katarzyna Podolska
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Tomasz Mazur
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
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36
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Bean EJ, Mazur T, Robinson AD. Mayer-Rokitansky-Küster-Hauser syndrome: sexuality, psychological effects, and quality of life. J Pediatr Adolesc Gynecol 2009; 22:339-46. [PMID: 19589707 DOI: 10.1016/j.jpag.2008.11.006] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2008] [Revised: 11/18/2008] [Accepted: 11/18/2008] [Indexed: 12/31/2022]
Abstract
Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is a congenital condition in which a genetic female is born with vaginal agenesis and a rudimentary to absent uterus. This condition affects a woman's ability to menstruate, to engage in penile-vaginal intercourse, and to bear children. Much has been published about how best to create a neovagina in women with MRKH, but little has been written about the psychological impact of MRKH and quality of life outcomes for women with the condition. A review of the extant literature published from 1955 to 2007 supports that (1) surgical or non-surgical creation of a neovagina alone does not ensure a successful psychological outcome, (2) psychological support at critical times can be helpful, and (3) how professionals use language to discuss the condition may positively or negatively influence a female's experience of MRKH. This article discusses the implications that existing knowledge has on future research and on clinical practice. Understanding how women with MRKH cope with and adjust to the condition will help healthcare professionals provide optimal care.
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Affiliation(s)
- E J Bean
- The MAGIC Foundation, Chicago, Illinois, USA
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37
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Orzechowski W, Morasiewicz L, Dragan S, Krawczyk A, Kulej M, Mazur T. Treatment of non-union of the forearm using distraction-compression osteogenesis. Ortop Traumatol Rehabil 2007; 9:357-65. [PMID: 17882115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
BACKGROUND The goal of the study is presentation broad abilities like gives Ilizarov method in the treatment of posttraumatic nonunion the of forearm with concomitant shortening and axis deformity, in minimally invasive technique, with contemporary axis correction and lengthening . MATERIAL AND METHODS . Authors present 6 patient operated on with the use of Ilizarov method, in years 2001-2005 , suffer from vital nonunion of the forearm - 6 cases radius; 1 case ulna and radius. In all cases with nonunion concomitant shortening of the radius from 2 to 3 cm and valgosity of radius with deformity in sagittal plane in 4 patients (2antecurvation, 2 retrocurvation). All patients had restricted rotation ROM of forearm and restriction of wrist motion . Author's modification of Ilizarov apparatus (with mini-Schanz's half-pins, which permitted rotation of forearm) was used in most of patients. In 3 cases monofocal slow correction with lengthening within nonunion was performed. In 2 cases bifocal, one-step slow correction of deformity and compression within nonunion with lengthening was performed. In 1 remaining case compression of ulna nonunion and compression with deformity correction of radius nonunion were performed. Distraction and correction start in 7 postoperative day in rate from 0,25 to 1 mm/day and correspondingly from1 to 2o/day. RESULTS Time of correction and distraction was average 63,3 days (40 - 90 days) . Total time of stabilization was average 25,4 weeks (20 - 35 weeks). Bone union was obtained in all patients. In all cases considerable recovery of limb function was achieved. All patients had superficial pin-tract infection . One patient had staphylococcal pin-tract infection of soft tissues, which retreat after 3-weeks guided antibiotic therapy. CONCLUSION The Ilizarov method permit for contemporary axis correction and/or distraction or compression. There is the method of choice in the treatment of nonunion of forearm with concomitant shortening and axis deformity.
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Affiliation(s)
- Wiktor Orzechowski
- Department of Orthopaedics and Musculoskeletal Traumatology, Medical University in Wrocław, Poland.
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Abstract
The aim of the present study was to determine the occurrence of eye infections accompanying the infection of the central nervous system and to demonstrate the possible tissue affinity of different strains of amoebae in subsequent infections. The results obtained demonstrate a clear correlation between the occurrence of eye infection and the degree of virulence of the strains. Amoebae isolated from eyeballs and other organs of dead mice did not exhibit any specificity in relation to the organs in subsequent infections. Irrespective of the place of isolation--be it eye or brain--in the subsequent passages, the amoebae were most often found in the brain and lungs, followed only then by the eye of the infected animals.
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Affiliation(s)
- T Mazur
- Department of Biology and Medical Parasitology, Karol Marcinkowski University of Medical Sciences, Poznań, Poland
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Mazur T, Gustowska L, Hadaś E. Extracerebral infections of Acanthamoeba spp. in mice. pathomorphological changes in tissues of infected animals. Wiad Parazytol 1999; 45:83-7. [PMID: 16883718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A variety of Acanthamoeba spp. pathogenic strains were isolated from water pools in the area of Poznań. In many cases amoebae invaded lungs, kidney heart, liver and diaphragm causing significant changes in these Organs. The presence of amoeba outside of CNS was found mainly in the early periods of infection. Amoeba isolated from different organs of dead animals did not exhibit any specificity in relation to the organs in following infections. Infection with both low-and high-virulent strains resulted in pathomorphological changes of similar character. However, changes induced by low-virulent parasites developed later and were less extensive.
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Affiliation(s)
- T Mazur
- Department of Biology and Medical Parasitology, Karol Marcinkowski University of Medical Sciences, Poznań
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Abstract
The aim of the present study was to examine the biosynthesis of prostaglandins and to investigate factors conditioning their biosynthesis in pathogenic and nonpathogenic strains of Acanthamoeba spp. We established that the activity of the synthase of prostaglandins was almost identical in pathogenic and non-pathogenic strains and that the synthesis of endoperoxide prostaglandins was similar to that of other organisms up to the point at which prostaglandin H2 was produced. The course of biosynthesis in vitro can be activated by various compounds such as glutathione, albumin, and p-chloromercuribenzoic acid (p-CMB), which are either activators or inhibitors of the enzymes. We suggest that the course of biosynthesis of prostaglandins in vivo is most probably activated by tissues or constitutional liquids surrounding the parasites.
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Affiliation(s)
- E Hadas
- Department of Biology and Medical Parasitology, K. Marcinkowski University of Medical Sciences, Poznan, Poland.
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Mazur T, Boczoń K. [Prof. Dr. Hab. Witold Kasprzak (obituary)]. Wiad Parazytol 1997; 43:105-23. [PMID: 9289923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Mazur T, Hadaś E, Iwanicka I. The duration of the cyst stage and the viability and virulence of Acanthamoeba isolates. Trop Med Parasitol 1995; 46:106-8. [PMID: 8525280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The viability of Acanthamoeba cysts after they have been stored in water at 4 degrees C for a period of 24 years was determined and to estimate their present degree of virulence as compared to its primary values. The viability of 17 amoebae isolates was examined using the eosin exclusion and in vitro excystation on agar plates (NNE). After the period of 24 years, only 3 isolates were found dead. The remaining 14 isolates after inoculation on NNE gave rise to new subcultures, although the percentage of living cysts measured by eosin exclusion was low (0-5%). Separate groups of mice were inoculated intranasally with 10 subcultures characterised by varying primary virulence. It was found that in 8 groups the mice were invaded (at varying degree), and some of them died. Taking into consideration the fact that some of the examined isolates completely lost their virulence only after 8 years of the in vitro cultivation, the obtained results are very intriguing. On the ground of these results one can assume that in the natural environment the period of viability for a cyst may be not shorter than 25 years, and, which is even more essential, they can maintain their invasive properties.
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Affiliation(s)
- T Mazur
- Department of Biology and Medical Parasitology, Karol Marcinkowski University of Medical Sciences in Poznań, Poland
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Abstract
The aim of this study was to determine the enzymatic differences in the process of increasing the degree of virulence in attenuated Acanthamoeba strains as well as strains freshly isolated from the natural environment. The data obtained in our studies indicate that by intranasal infection of mice, one can restore virulence in primary virulent strains and make virulent strains that primarily were noninvasive. The levels of peroxidase and proteinase activity measured thoroughly correlated with the increase in the degree of virulence observed during the process of making the amoeba virulent by inoculating them into mice. We observed that in cases in which the activity of peroxidase and proteinase was higher than 0.150 units/mg protein and 8 units/mg protein, respectively, some of the animals infected with the strains showing this activity of peroxidase and proteinase died. In nonvirulent strains as well as in poorly virulent strains, we observed a decidedly lower activity of these enzymes.
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Affiliation(s)
- T Mazur
- Department of Biology and Medical Parasitology, Karol Marcinkowski University of Medical Sciences, Poznan, Poland
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Gieryng R, Prost M, Gieryng H, Mazur T, Kasprzak W. [Amebic keratitis-keratitis acanthamoeba]. Klin Oczna 1994; 96:163-7. [PMID: 7990337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In seventeen patients who suffered of corneal ulcer, and were negative in bacteriological and mycological examinations, parasitological tests were performed between 1990-1992. Acanthamoeba keratitis was diagnosed in one patient with characteristic corneal changes of right eye following trauma. The patient was not a contact lens wearer. The amoeba found in direct smears of scraping from corneal ulcer and isolated and cloned in in vitro conditions (isolate-clone-No. 2961) belonged to Acanthamoeba polyphaga species. The trophozoites showed a low degree of invasiveness and high virulence when tested in BALB/c mice. The authors discussed the epidemiology of Acanthamoeba keratitis and pointed out to the necessity of accurate laboratory diagnosis and discerning interpretation of the results to prevent an Acanthamoeba-phobia among the potential patients and most of all among the medical staff.
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Affiliation(s)
- R Gieryng
- Katedry Biologii i Parazytologii AM, Lublinie
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45
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Hadas E, Mazur T. Proteolytic enzymes of pathogenic and non-pathogenic strains of Acanthamoeba spp. Trop Med Parasitol 1993; 44:197-200. [PMID: 8256097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The aim of this work was biochemical characterization and classification of proteinases in pathogenic and non-pathogenic strains of Acanthamoeba spp. The authors showed two proteinase (acid 35 kDa and alkaline 65 kDa) which could be separated electrophoretically. Acid proteinase was inhibited by serine proteinase inhibitors such as DIFP. The second enzyme which was active at alkaline pH, was enhanced by EDTA and inhibited by iodoacetate (IAA) and (p-CMB) p-chloromercuribenzoate. These substances are known to inhibit cysteine type proteinases. The alkaline proteinase was more distinctively active in pathogenic strains and belongs to cysteine class (EC 3.4.22), whereas the acid proteinase was similar active in pathogenic and non-pathogenic strains and belong to serine class (EC 3.4.21).
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Affiliation(s)
- E Hadas
- Department of Biology and Medical Parasitology, Karol Marcinkowski University of Medical Sciences, Poznan, Poland
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Abstract
The aim of our study was to demonstrate a possible correlation between some biochemical and biological markers of the degree of virulence of the investigated strains of Acanthamoeba sp. The results obtained demonstrated a significant correlation between the activity of proteases, peroxidases, and superoxide dismutase and the degree of virulence of the strains as previously defined by tests on mice. The results also proved that the strains that killed some of the infected mice were characterized by the highest value recorded for the activity of peroxidase and the lowest value obtained for the activity of superoxide dismutase.
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Affiliation(s)
- E Hadaś
- Department of Biology and Medical Parasitology, Karol Marcinkowski University of Medical Sciences, Poznań, Poland
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47
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Mazur T, Clopper RR. Pubertal disorders. Psychology and clinical management. Endocrinol Metab Clin North Am 1991; 20:211-30. [PMID: 2029887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The behavioral data reviewed herein must be viewed with caution. Although there are reports that adhere to rigorous methodology, these are the exception. Most reports do not adequately describe either the methodology used or their sample. Subjects are often of mixed endocrine diagnoses, and sometimes the results are of both boys and girls. All of these pitfalls make interpretation of results difficult and limiting. With this in mind, the following conclusions are offered. The majority of behavioral data on precocious puberty comes from studies of IPP in girls. Cognitively, IPP has been associated with average to high-average intelligence. Purportedly, the finding of lower visual-spatial skills than verbal skills in early maturing boys and girls has received equivocal support by cognitive studies of IPP individuals. Similarly, clear differences in hemispheric lateralization have not been demonstrated. Aside from increased somatic complaints during the nonmenstrual phases of their menstrual cycle, girls with IPP show a spectrum of behavior adjustments. Major psychopathology is rare. Clearly, their early development makes them look older than their actual age, which probably alters the expectations others have for them. Psychosexually, however, IPP girls develop in concert with their chronologic age and social experience, rather than their early biologic maturation. However, recent reports suggest a modest influence of hormones. In summary, these studies support an interactionist theory of human psychosexual development. Research data on IPP girls suggest that they do not significantly differ from girls who are early maturers but within the normal range. Research on these girls indicates that most negotiate their puberty without severe problems. There has been less research on IPP boys because it occurs so rarely. Most of what is understood about precocious puberty in boys comes from boys with precocious puberty secondary to poorly controlled CAH. Behavioral data on individuals with delayed puberty come almost exclusively from boys. Although CD appears to be the most frequently diagnosed form of delayed puberty and does not reflect a known pathologic process, men with CD as well as those with organic disorders appear to be at risk for psychosocial and psychosexual difficulties. These difficulties are not severe forms of psychopathology. Rather, they probably represent problems negotiating the expected adolescent lessons of psychosocial development with a physique that places them at a disadvantage. They clearly look younger than their actual chronologic age. Cognitively, as with the children with precocious puberty, there is no evidence of intellectual impairment associated with delayed puberty.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- T Mazur
- School of Medicine, State University of New York, Buffalo
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48
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Abstract
Management of infants born with ambiguous sex organs requires the close collaboration of a team of professionals: pediatric endocrinologist, pediatric psychologist, gynecologist, and surgeon. The interdisciplinary teamwork of a group of professionals is described in the case of a patient announced at birth as a male but within days reannounced and reared as a female. Over the next 21 years, she became completely aware of her endocrine condition, including its medical classification (male pseudohermaphroditism), her chromosomal (46 XY) and gonadal (testes) status, and her early history of male sex assignment. The clinical management described herein helped this person deal effectively with her condition despite unsuccessful reconstructive vagal surgery. Substantiation of this is provided by the patient's personal comments.
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Affiliation(s)
- T Quattrin
- State University of New York, Buffalo School of Medicine
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49
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Budak A, Macura AB, Mazur T, Laskownicka Z. Fungal species isolated from skin and nail lesions of hands and feet of patients suspected of mycotic infection. Mykosen 1987; 30:434-9. [PMID: 3696172 DOI: 10.1111/j.1439-0507.1987.tb03643.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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50
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Mazur T. Ambiguous genitalia: detection and counseling. Pediatr Nurs 1983; 9:417-22, 431. [PMID: 6557448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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