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Vozniuk O, Kejík Z, Veselá K, Skaličková M, Novotný P, Hromádka R, Hajduch J, Martásek P, Jakubek M. A Fast HPLC/UV Method for Determination of Ketoprofen in Cellular Media. ChemistryOpen 2024; 13:e202300147. [PMID: 37955865 PMCID: PMC10924040 DOI: 10.1002/open.202300147] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/13/2023] [Indexed: 11/14/2023] Open
Abstract
A simple, sensitive and quick HPLC method was developed for the determination of ketoprofen in cell culture media (EMEM, DMEM, RPMI). Separation was performed using a gradient on the C18 column with a mobile phase of acetonitrile and miliQ water acidified by 0.1 % (v/v) formic acid. The method was validated for parameters including linearity, accuracy, precision, limit of quantitation and limit of detection, as well as robustness. The response was found linear over the range of 3-100 μg/mL as demonstrated by the acquired value of correlation coefficient R2=0.9997. The described method is applicable for determination of various pharmacokinetic aspects of ketoprofen in vitro.
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Affiliation(s)
- Oleksandra Vozniuk
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
- Department of Analytical ChemistryFaculty of Chemical EngineeringUniversity of Chemistry and Technology166 28PragueCzech Republic
| | - Zdeněk Kejík
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
- Department of Analytical ChemistryFaculty of Chemical EngineeringUniversity of Chemistry and Technology166 28PragueCzech Republic
| | - Kateřina Veselá
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
| | - Markéta Skaličková
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
| | - Petr Novotný
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
| | - Róbert Hromádka
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
| | - Jan Hajduch
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
| | - Pavel Martásek
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
| | - Milan Jakubek
- Department of Paediatrics and Inherited Metabolic DisordersFirst Faculty of MedicineCharles University and General University Hospital in PragueKe Karlovu 455/2128 08PragueCzech Republic
- BIOCEVFirst Faculty of MedicineCharles University252 20VestecCzech Republic
- Department of Analytical ChemistryFaculty of Chemical EngineeringUniversity of Chemistry and Technology166 28PragueCzech Republic
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Hoboth P, Sztacho M, Quaas A, Akgül B, Hozák P. Quantitative super-resolution microscopy reveals the differences in the nanoscale distribution of nuclear phosphatidylinositol 4,5-bisphosphate in human healthy skin and skin warts. Front Cell Dev Biol 2023; 11:1217637. [PMID: 37484912 PMCID: PMC10361526 DOI: 10.3389/fcell.2023.1217637] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 06/22/2023] [Indexed: 07/25/2023] Open
Abstract
Introduction: Imaging of human clinical formalin-fixed paraffin-embedded (FFPE) tissue sections provides insights into healthy and diseased states and therefore represents a valuable resource for basic research, as well as for diagnostic and clinical purposes. However, conventional light microscopy does not allow to observe the molecular details of tissue and cell architecture due to the diffraction limit of light. Super-resolution microscopy overcomes this limitation and provides access to the nanoscale details of tissue and cell organization. Methods: Here, we used quantitative multicolor stimulated emission depletion (STED) nanoscopy to study the nanoscale distribution of the nuclear phosphatidylinositol 4,5-bisphosphate (nPI(4,5)P2) with respect to the nuclear speckles (NS) marker SON. Results: Increased nPI(4,5)P2 signals were previously linked to human papillomavirus (HPV)-mediated carcinogenesis, while NS-associated PI(4,5)P2 represents the largest pool of nPI(4,5)P2 visualized by staining and microscopy. The implementation of multicolor STED nanoscopy in human clinical FFPE skin and wart sections allowed us to provide here the quantitative evidence for higher levels of NS-associated PI(4,5)P2 in HPV-induced warts compared to control skin. Discussion: These data expand the previous reports of HPV-induced increase of nPI(4,5)P2 levels and reveal for the first time the functional, tissue-specific localization of nPI(4,5)P2 within NS in clinically relevant samples. Moreover, our approach is widely applicable to other human clinical FFPE tissues as an informative addition to the classical histochemistry.
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Affiliation(s)
- Peter Hoboth
- Department of Biology of the Cell Nucleus, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Martin Sztacho
- Department of Biology of the Cell Nucleus, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Alexander Quaas
- Institute of Pathology, Medical Faculty and University Hospital Cologne, Cologne, Germany
| | - Baki Akgül
- Institute of Virology, University of Cologne, Medical Faculty and University Hospital Cologne, Cologne, Germany
| | - Pavel Hozák
- Department of Biology of the Cell Nucleus, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
- Microscopy Centre, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
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Mlček M, Borges JB, Otáhal M, Alcala GC, Hladík D, Kuriščák E, Tejkl L, Amato M, Kittnar O. Real-time effects of lateral positioning on regional ventilation and perfusion in an experimental model of acute respiratory distress syndrome. Front Physiol 2023; 14:1113568. [PMID: 37020459 PMCID: PMC10067565 DOI: 10.3389/fphys.2023.1113568] [Citation(s) in RCA: 1] [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: 12/01/2022] [Accepted: 03/01/2023] [Indexed: 03/22/2023] Open
Abstract
Low-volume lung injury encompasses local concentration of stresses in the vicinity of collapsed regions in heterogeneously ventilated lungs. We aimed to study the effects on ventilation and perfusion distributions of a sequential lateral positioning (30°) strategy using electrical impedance tomography imaging in a porcine experimental model of early acute respiratory distress syndrome (ARDS). We hypothesized that such strategy, including a real-time individualization of positive end-expiratory pressure (PEEP) whenever in lateral positioning, would provide attenuation of collapse in the dependent lung regions. A two-hit injury acute respiratory distress syndrome experimental model was established by lung lavages followed by injurious mechanical ventilation. Then, all animals were studied in five body positions in a sequential order, 15 min each: Supine 1; Lateral Left; Supine 2; Lateral Right; Supine 3. The following functional images were analyzed by electrical impedance tomography: ventilation distributions and regional lung volumes, and perfusion distributions. The induction of the acute respiratory distress syndrome model resulted in a marked fall in oxygenation along with low regional ventilation and compliance of the dorsal half of the lung (gravitational-dependent in supine position). Both the regional ventilation and compliance of the dorsal half of the lung greatly increased along of the sequential lateral positioning strategy, and maximally at its end. In addition, a corresponding improvement of oxygenation occurred. In conclusion, our sequential lateral positioning strategy, with sufficient positive end-expiratory pressure to prevent collapse of the dependent lung units during lateral positioning, provided a relevant diminution of collapse in the dorsal lung in a porcine experimental model of early acute respiratory distress syndrome.
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Affiliation(s)
- Mikuláš Mlček
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
| | - João Batista Borges
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
- *Correspondence: João Batista Borges,
| | - Michal Otáhal
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
- Department of Anaesthesiology, Resuscitation and Intensive Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czechia
| | - Glasiele Cristina Alcala
- Pulmonology Division, Cardiopulmonary Department, Heart Institute, University of Sao Paulo, São Paulo, Brazil
| | - Dominik Hladík
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
- Department of Anaesthesiology, Resuscitation and Intensive Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czechia
| | - Eduard Kuriščák
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
| | - Leoš Tejkl
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
| | - Marcelo Amato
- Pulmonology Division, Cardiopulmonary Department, Heart Institute, University of Sao Paulo, São Paulo, Brazil
| | - Otomar Kittnar
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czechia
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Hammerschmiedt T, Holatko J, Zelinka R, Kintl A, Skarpa P, Bytesnikova Z, Richtera L, Mustafa A, Malicek O, Brtnicky M. The combined effect of graphene oxide and elemental nano-sulfur on soil biological properties and lettuce plant biomass. Front Plant Sci 2023; 14:1057133. [PMID: 36998685 PMCID: PMC10043190 DOI: 10.3389/fpls.2023.1057133] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/02/2023] [Indexed: 06/19/2023]
Abstract
The impact of graphene oxide (GO) nanocarbon on soil properties is mixed, with both negative and positive effects. Although it decreases the viability of some microbes, there are few studies on how its single amendment to soil or in combination with nanosized sulfur benefits soil microorganisms and nutrient transformation. Therefore, an eight-week pot experiment was carried out under controlled conditions (growth chamber with artificial light) in soil seeded with lettuce (Lactuca sativa) and amended with GO or nano-sulfur on their own or their several combinations. The following variants were tested: (I) Control, (II) GO, (III) Low nano-S + GO, (IV) High nano-S + GO, (V) Low nano-S, (VI) High nano-S. Results revealed no significant differences in soil pH, dry plant aboveground, and root biomass among all five amended variants and the control group. The greatest positive effect on soil respiration was observed when GO was used alone, and this effect remained significant even when it was combined with high nano-S. Low nano-S plus a GO dose negatively affected some of the soil respiration types: NAG_SIR, Tre_SIR, Ala_SIR, and Arg_SIR. Single GO application was found to enhance arylsulfatase activity, while the combination of high nano-S and GO not only enhanced arylsulfatase but also urease and phosphatase activity in the soil. The elemental nano-S probably counteracted the GO-mediated effect on organic carbon oxidation. We partially proved the hypothesis that GO-enhanced nano-S oxidation increases phosphatase activity.
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Affiliation(s)
- Tereza Hammerschmiedt
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Jiri Holatko
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
- Agrovyzkum Rapotin, Ltd., Rapotin, Czechia
| | - Radim Zelinka
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czechia
| | - Antonin Kintl
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
- Agricultural Research, Ltd., Troubsko, Czechia
| | - Petr Skarpa
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Zuzana Bytesnikova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czechia
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czechia
| | - Adnan Mustafa
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia
- Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Praha, Czechia
| | - Ondrej Malicek
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Martin Brtnicky
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia
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