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Prylutska S, Grebinyk A, Ponomarenko S, Gövem D, Chumachenko V, Kutsevol N, Petrovsky M, Ritter U, Frohme M, Piosik J, Prylutskyy Y. Toxicity of Water-Soluble D-g-PNIPAM Polymers in a Complex with Chemotherapy Drugs and Mechanism of Their Action In Vitro. Int J Mol Sci 2024; 25:3069. [PMID: 38474314 DOI: 10.3390/ijms25053069] [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: 02/13/2024] [Revised: 02/27/2024] [Accepted: 03/03/2024] [Indexed: 03/14/2024] Open
Abstract
The application of a biocompatible polymer nanocarrier can provide target delivery to tumor tissues, improved pharmacokinetics, controlled drug release, etc. Therefore, the proposed strategy was to use the water-soluble star-like copolymers with a Dextran core and Poly(N-isopropylacrylamide) grafts (D-g-PNIPAM) for conjugation with the widely used chemotherapy drugs in oncology-Cisplatin (Cis-Pt) and Doxorubicin (Dox). The molecular characteristics of the copolymer were received using size-exclusion chromatography. The physicochemical characterization of the D-g-PNIPAM-Cis-Pt (or Dox) nanosystem was conducted using dynamic light scattering and FTIR spectroscopy. Using traditional biochemical methods, a comparative analysis of the enhancement of the cytotoxic effect of free Cis-Pt and Dox in combination with D-g-PNIPAM copolymers was performed in cancer cells of the Lewis lung carcinoma line, which are both sensitive and resistant to Dox; in addition, the mechanism of their action in vitro was evaluated.
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Affiliation(s)
- Svitlana Prylutska
- Department of Plants Physiology, Biochemistry and Bioenergetics, National University of Life and Environmental Sciences of Ukraine, 03041 Kyiv, Ukraine
| | - Anna Grebinyk
- Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany
- Division Molecular Biotechnology and Functional Genomics, Technical University of Applied Sciences Wildau, 15745 Wildau, Germany
| | - Stanislav Ponomarenko
- Department of Biophysics and Neurobiology, Department of Chemistry, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Defne Gövem
- Division Molecular Biotechnology and Functional Genomics, Technical University of Applied Sciences Wildau, 15745 Wildau, Germany
| | - Vasyl Chumachenko
- Department of Biophysics and Neurobiology, Department of Chemistry, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Nataliya Kutsevol
- Department of Biophysics and Neurobiology, Department of Chemistry, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Mykola Petrovsky
- Department of Biophysics and Neurobiology, Department of Chemistry, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Uwe Ritter
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, 98693 Ilmenau, Germany
| | - Marcus Frohme
- Division Molecular Biotechnology and Functional Genomics, Technical University of Applied Sciences Wildau, 15745 Wildau, Germany
| | - Jacek Piosik
- Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, 80-307 Gdańsk, Poland
| | - Yuriy Prylutskyy
- Department of Biophysics and Neurobiology, Department of Chemistry, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
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Starostina A, Kravchenko V, Petrovsky M. An Innovative Technique to Define Marketing Research Objective. TEM Journal 2022. [DOI: 10.18421/tem112-59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The article aims to describe an innovative technique for defining the marketing research objective. The proposed approach is based on a Structured Table Analysis of Business Environment, presented in tabular form (STABE technique). The technique enables obtaining the information needed to solve a certain management problem in a particular business environment. The development of the STABE technique is based on the following provisions: the role, importance, and functions of marketing research in making managerial decisions; managerial orientation, logical sequence of stages, maximum possible formalization.
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Venglovsky J, Sasakova N, Vargova M, Pacajova Z, Placha I, Petrovsky M, Harichova D. Evolution of temperature and chemical parameters during composting of the pig slurry solid fraction amended with natural zeolite. Bioresour Technol 2005; 96:181-189. [PMID: 15381214 DOI: 10.1016/j.biortech.2004.05.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2003] [Revised: 12/02/2003] [Indexed: 05/24/2023]
Abstract
A 3-month experiment was conducted at a 300 kg scale to observe decomposition processes in pig slurry solids amended with two different doses of natural Slovak zeolite-clinoptilolite (substrates S1 and S2, 1% and 2% of zeolite by weight, respectively) in comparison with the control (unamended solids). The experimental and control substrates were stored outdoors in sheltered static piles at ambient temperatures ranging from 8.0 to 34.7 degrees C. The solid fraction (SF) of pig slurry was obtained by separation on vibration sieves prior to slurry treatment with activated sludge. The initial water content of the SF was 77.1% and no water was added to the piles during the storage. The temperature in the core of the piles was recorded throughout the experiment. By day 3 and 5 of storage (1% and 2% zeolite, resp.), the temperature in the substrates S1 and S2 exceeded 55 degrees C and remained above this level for 15 days while the highest temperature recorded in the control during the experiment was 29.8 degrees C. Samples from the core of the piles were taken periodically to determine pH, dry matter at 105 degrees C (DM), ash (550 degrees C/4 h), ammonia nitrogen (N-NH(4)(+)), nitrate nitrogen (N-NO(3)(-)), total nitrogen (N(t)), total phosphorus (P(t)); total organic carbon (TOC) was computed. The results showed that pH levels in S1 and S2 remained below that in the control for most of the thermophilic stage. This may be related to water-soluble ammonia and the affinity of zeolites to ammonium ions. A significant decrease in the level of ammonia nitrogen in water extracts from S1 and S2 was observed between days 5 and 35 in comparison with the control. The values of ash also differed and corresponded to the intensity of the decomposition processes in the respective substrates.
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Affiliation(s)
- J Venglovsky
- University of Veterinary Medicine, Research Institute of Veterinary Medicine, Hlinkova 1/A, 04001 Kosice, Slovak Republic.
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