1
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Kraj L, Chmiel P, Gryziak M, Grabowska-Derlatka L, Szymański Ł, Wysokińska E. Impact of Thrombocytopenia on Survival in Patients with Hepatocellular Carcinoma: Updated Meta-Analysis and Systematic Review. Cancers (Basel) 2024; 16:1293. [PMID: 38610973 PMCID: PMC11011012 DOI: 10.3390/cancers16071293] [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: 02/27/2024] [Revised: 03/24/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Platelets (PLT) have a role in the pathogenesis, progression, and prognosis of hepatocellular carcinoma (HCC) and could represent a readily measurable laboratory parameter to enhance the comprehensive evaluation of HCC patients. METHODS The PubMed, Web of Science, and Scopus databases were searched with a focus on survival as well as patient and tumor-specific characteristics in correlation to reported PLT counts. Survival outcomes were analyzed with both common-effect and random-effects models. The hazard ratio (HR) and its 95% confidence interval (CI) from analyzed trials were incorporated. Studies that did not provide survival data but focused on platelet count correlation with HCC characteristics were reviewed. RESULTS In total, 26 studies, including a total of 9403 patients, met our criteria. The results showed that thrombocytopenia in HCC patients was associated with poor overall survival (common-effect HR = 1.15, 95% CI: 1.06-1.25; random-effect HR = 1.30, 95% CI: 1.05-1.63). Moreover, three studies reveal significant correlations between PLT indices and tumor characteristics such as size, foci number, and etiology of HCC development. CONCLUSION Our meta-analysis confirmed that PLT count could act as a prognostic marker in HCC, especially with a PLT count cut off <100 × 103/mm3. Further prospective studies focusing on the role of PLT in clearly defined subgroups are necessary.
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Affiliation(s)
- Leszek Kraj
- Department of Oncology, University Clinical Centre, Medical University of Warsaw, 02-091 Warsaw, Poland
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, 01-447 Magdalenka, Poland;
| | - Paulina Chmiel
- University Clinical Centre, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Maciej Gryziak
- Department of Oncology, University Clinical Centre, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Laretta Grabowska-Derlatka
- 2nd Department of Clinical Radiology, University Clinical Centre, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, 01-447 Magdalenka, Poland;
| | - Ewa Wysokińska
- Division of Hematology and Medical Oncology, Mayo Clinic, Jacksonville, FL 32224, USA
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2
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Skiba D, Jaskuła K, Nawrocka A, Poznański P, Łazarczyk M, Szymański Ł, Żera T, Sacharczuk M, Cudnoch-Jędrzejewska A, Gaciong Z. The Role of Opioid Receptor Antagonists in Regulation of Blood Pressure and T-Cell Activation in Mice Selected for High Analgesia Induced by Swim Stress. Int J Mol Sci 2024; 25:2618. [PMID: 38473865 DOI: 10.3390/ijms25052618] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
Opioid peptides and their G protein-coupled receptors are important regulators within the cardiovascular system, implicated in the modulation of both heart and vascular functions. It is known that naloxone-an opioid antagonist-may exert a hypertensive effect. Recent experimental and clinical evidence supports the important role of inflammatory mechanisms in hypertension. Since opioids may play a role in the regulation of both blood pressure and immune response, we studied these two processes in our model. We aimed to evaluate the effect of selective and non-selective opioid receptor antagonists on blood pressure and T-cell activation in a mouse model of high swim stress-induced analgesia. Blood pressure was measured before and during the infusion of opioid receptor antagonists using a non-invasive tail-cuff measurement system. To assess the activation of T-cells, flow cytometry was used. We discovered that the non-selective antagonism of the opioid system by naloxone caused a significant elevation of blood pressure. The selective antagonism of μ and κ but not δ opioid receptors significantly increased systolic blood pressure. Subsequently, a brief characterization of T-cell subsets was performed. We found that the blockade of μ and δ receptors is associated with the increased expression of CD69 on CD4 T-cells. Moreover, we observed an increase in the central memory CD4 and central memory CD8 T-cell populations after the δ opioid receptor blockade. The antagonism of the μ opioid receptor increased the CD8 effector and central memory T-cell populations.
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Affiliation(s)
- Dominik Skiba
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Kinga Jaskuła
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Agata Nawrocka
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Piotr Poznański
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Marzena Łazarczyk
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Łukasz Szymański
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Tymoteusz Żera
- Department of Experimental and Clinical Physiology, Center for Preclinical Research, Medical University of Warsaw, Banacha 1B Street, 02-097 Warsaw, Poland
| | - Mariusz Sacharczuk
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
- Department of Pharmacodynamics, Medical University of Warsaw, Zwirki i Wigury 81 Street, 02-091 Warsaw, Poland
| | - Agnieszka Cudnoch-Jędrzejewska
- Department of Experimental and Clinical Physiology, Center for Preclinical Research, Medical University of Warsaw, Banacha 1B Street, 02-097 Warsaw, Poland
| | - Zbigniew Gaciong
- Department and Clinic of Internal Diseases, Hypertension and Angiology, Medical University of Warsaw, Banacha 1A Street, 02-097 Warsaw, Poland
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Lewicki S, Zwoliński M, Hovagimyan A, Stelmasiak M, Szarpak Ł, Lewicka A, Pojda Z, Szymański Ł. Chitosan-Based Dressing as a Sustained Delivery System for Bioactive Cytokines. Int J Mol Sci 2023; 25:30. [PMID: 38203201 PMCID: PMC10778940 DOI: 10.3390/ijms25010030] [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: 09/26/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024] Open
Abstract
Wounds represent a common occurrence in human life. Consequently, scientific investigations are underway to advance wound healing methodologies, with a notable focus on dressings imbued with biologically active compounds capable of orchestrating the wound microenvironment through meticulously regulated release mechanisms. Among these bioactive agents are cytokines, which, when administered to the wound milieu without appropriate protection, undergo rapid loss of their functional attributes. Within the context of this research, we present a method for fabricating dressings enriched with G-CSF (granulocyte colony-stimulating factor) or GM-CSF (granulocyte-macrophage colony-stimulating factor), showcasing both biological activity and protracted release dynamics. Based on Ligasano, a commercial polyurethane foam dressing, and chitosan crosslinked with TPP (sodium tripolyphosphate), these dressings are noncytotoxic and enable cytokine incorporation. The recovery of cytokines from dressings varied based on the dressing preparation and storage techniques (without modification, drying, freeze-drying followed by storage at 4 °C or freeze-drying followed by storage at 24 °C) and cytokine type. Generally, drying reduced cytokine levels and their bioactivity, especially with G-CSF. The recovery of G-CSF from unmodified dressings was lower compared to GM-CSF (60% vs. 80%). In summary, our freeze-drying approach enables the storage of G-CSF or GM-CSF enriched dressings at 24 °C with minimal cytokine loss, preserving their biological activity and thus enhancing future clinical availability.
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Affiliation(s)
- Sławomir Lewicki
- Institute of Outcomes Research, Maria Sklodowska-Curie Medical Academy, 03-411 Warsaw, Poland
| | - Michał Zwoliński
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland; (M.Z.); (A.H.); (M.S.)
| | - Adrian Hovagimyan
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland; (M.Z.); (A.H.); (M.S.)
| | - Marta Stelmasiak
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland; (M.Z.); (A.H.); (M.S.)
| | - Łukasz Szarpak
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA;
- Department of Clinical Research and Development, LUX MED Group, 02-676 Warsaw, Poland
| | - Aneta Lewicka
- Military Centre of Preventive Medicine, 05-100 Nowy Dwór Mazowiecki, Poland;
| | - Zygmunt Pojda
- Department of Regenerative Medicine, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, 05-552 Magdalenka, Poland
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4
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Tyc J, Wysok B, Drażbo A, Naczmański J, Szymański Ł. External and internal quality traits of eggs from different ornamental chicken breeds. Pol J Vet Sci 2023; 26:419-429. [PMID: 37727127 DOI: 10.24425/pjvs.2023.145048] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
This study analyzed the internal and external quality traits of eggs derived from hens of different breeds, including Silkie, Sultan, Cochin Bantam, Brahma and White Leghorn. The highest mean weight was noted for eggs originating from the White Leghorns breed, and the lowest was for eggs from the Cochin Bantams. Simultaneously, both a positive correlation between the egg weight and the percentage of albumen (r = 0.876) and a negative correlation between egg weight and the percentage of yolk (r = - 0.842) were found. The eggshell composition varied significantly in mean phosphorus amount, whereas the calcium content did not differ significantly. Despite this, eggshell strength varied significantly between breeds. Regarding cholesterol and fatty acid levels, the highest amount of cholesterol was noted in the Cochin Bantam breed, and the lowest was in the White Leghorn, although Leghorn was the breed characterized by the highest saturated fatty acid levels, and Cochin Bantam was the lowest. Regarding the polyunsaturated fatty acids (which have been proven to positively influence the cardiovascular system), the highest levels were obtained by Leghorn eggs, and the lowest were obtained by Silkie eggs. In conclusion, the study indicates that ornamental chicken breeds are a source of high-quality products, which could be attractive to consumers, additionally supporting traditional farming and animal genetic resources.
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Affiliation(s)
- J Tyc
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, Olsztyn, 10-718, Poland
| | - B Wysok
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, Olsztyn, 10-718, Poland
| | - A Drażbo
- Department of Poultry Science, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, Olsztyn, 10-718, Poland
| | - J Naczmański
- Department of Poultry Science, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, Olsztyn, 10-718, Poland
| | - Ł Szymański
- Department of Poultry Science, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, Olsztyn, 10-718, Poland
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5
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Szymański Ł, Lieto K, Zdanowski R, Lewicki S, Tassan JP, Kubiak JZ. Differential Effects of Overexpression of Wild Type and Kinase-Dead MELK in Fibroblasts and Keratinocytes, Potential Implications for Skin Wound Healing and Cancer. Int J Mol Sci 2023; 24:ijms24098089. [PMID: 37175795 PMCID: PMC10179274 DOI: 10.3390/ijms24098089] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/21/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
Maternal embryonic leucine-zipper kinase (MELK) plays a significant role in cell cycle progression, mitosis, cell migration, cell renewal, gene expression, embryogenesis, proliferation, apoptosis, and spliceosome assembly. In addition, MELK is known to be overexpressed in multiple types of cancer and is associated with cancer proliferation. Tumorigenesis shares many similarities with wound healing, in which the rate of cell proliferation is a critical factor. Therefore, this study aimed to determine the involvement of MELK in the regulation of cell division in two cell types involved in this process, namely fibroblasts and keratinocytes. We examined how temporal overexpression of wild-type and kinase-dead MELK kinase variants affect the rate of proliferation, viability, cell cycle, and phosphorylation state of other kinases involved in these processes, such as ERK1/2, AKT1, MAPK9, p38, and p53. We explored if MELK could be used as a therapeutic stimulator of accelerated wound healing via increased proliferation. We observed that aberrant expression of MELK results in abnormal proliferation, altered cell cycle distribution, and decreased viability of the cells, which challenge the utility of MELK in accelerated wound healing. Our results indicate that, at least in healthy cells, any deviation from precisely controlled MELK expression is harmful to fibroblasts and keratinocytes.
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Affiliation(s)
- Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
| | - Krystyna Lieto
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
| | - Robert Zdanowski
- Laboratory of Molecular Oncology and Innovative Therapies, Department of Oncology, Military Institute of Medicine-National Research Institute, 04-141 Warsaw, Poland
| | - Sławomir Lewicki
- Institute of Outcomes Research, Maria Sklodowska-Curie Medical Academy, 03-411 Warsaw, Poland
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Technology and Humanities in Radom, 26-600 Radom, Poland
| | - Jean-Pierre Tassan
- Dynamics and Mechanics of Epithelia Group, Institute of Genetics and Development of Rennes (IGDR), CNRS, University Rennes, UMR 6290, 35043 Rennes, France
| | - Jacek Z Kubiak
- Laboratory of Molecular Oncology and Innovative Therapies, Department of Oncology, Military Institute of Medicine-National Research Institute, 04-141 Warsaw, Poland
- Dynamics and Mechanics of Epithelia Group, Institute of Genetics and Development of Rennes (IGDR), CNRS, University Rennes, UMR 6290, 35043 Rennes, France
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6
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Skopek R, Palusińska M, Kaczor-Keller K, Pingwara R, Papierniak-Wyglądała A, Schenk T, Lewicki S, Zelent A, Szymański Ł. Choosing the Right Cell Line for Acute Myeloid Leukemia (AML) Research. Int J Mol Sci 2023; 24:5377. [PMID: 36982453 PMCID: PMC10049680 DOI: 10.3390/ijms24065377] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/01/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
Immortalized cell lines are widely used in vitro tools in oncology and hematology research. While these cell lines represent artificial systems and may accumulate genetic aberrations with each passage, they are still considered valuable models for pilot, preliminary, and screening studies. Despite their limitations, cell lines are cost-effective and provide repeatable and comparable results. Choosing the appropriate cell line for acute myeloid leukemia (AML) research is crucial for obtaining reliable and relevant results. Several factors should be considered when selecting a cell line for AML research, such as specific markers and genetic abnormalities associated with different subtypes of AML. It is also essential to evaluate the karyotype and mutational profile of the cell line, as these can influence the behavior and response to the treatment of the cells. In this review, we evaluate immortalized AML cell lines and discuss the issues surrounding them concerning the revised World Health Organization and the French-American-British classifications.
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Affiliation(s)
- Rafał Skopek
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
| | - Małgorzata Palusińska
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
| | - Katarzyna Kaczor-Keller
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
| | - Rafał Pingwara
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences-SGGW, 02-787 Warsaw, Poland
| | | | - Tino Schenk
- Department of Hematology and Medical Oncology, Clinic of Internal Medicine II, Jena University Hospital, 07747 Jena, Germany
- Institute of Molecular Cell Biology, Center for Molecular Biomedicine Jena (CMB), Jena University Hospital, 07747 Jena, Germany
| | - Sławomir Lewicki
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Technology and Humanities, 26-600 Radom, Poland
- Institute of Outcomes Research, Maria Sklodowska-Curie Medical Academy, 00-001 Warsaw, Poland
| | - Artur Zelent
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Magdalenka, Poland
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7
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Mátis G, Mackei M, Boomsma B, Fébel H, Nadolna K, Szymański Ł, Edwards JE, Neogrády Z, Kozłowski K. Dietary Protected Butyrate Supplementation of Broilers Modulates Intestinal Tight Junction Proteins and Stimulates Endogenous Production of Short Chain Fatty Acids in the Caecum. Animals (Basel) 2022; 12:ani12151940. [PMID: 35953929 PMCID: PMC9367590 DOI: 10.3390/ani12151940] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 11/16/2022] Open
Abstract
Short chain fatty acid (SCFA) butyrate has various beneficial effects on the gut microbiota as well as on the overall health status and metabolism of the host organism. The modulatory role of butyrate on gut barrier integrity reflected by tight junction protein expression has been already described in mammalian species. However, there is limited information available regarding chickens. Therefore, the main aim of this study was to monitor the effects of protected butyrate on claudin barrier protein and monocarboxylate transporter 1 abundance in different gastrointestinal segments of chickens as well as the growth performance of broiler chickens. The effect of protected butyrate on the caecal microbiota was monitored by quantifying the concentrations of total eubacteria and key enzymes of butyrate production. Furthermore, intestinal SCFA concentrations were also measured. Based on the data obtained, protected butyrate increased the overall performance as well as the barrier integrity of various gut segments. Protected butyrate also positively affected the SCFA concentration and composition. These findings provide valuable insight into the complex effects of protected butyrate on broiler gut health, highlighting the beneficial effects in improving intestinal barrier integrity and performance parameters.
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Affiliation(s)
- Gábor Mátis
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (G.M.); (M.M.); (Z.N.)
| | - Máté Mackei
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (G.M.); (M.M.); (Z.N.)
| | - Bart Boomsma
- Palital Feed Additives B.V., De Tweede Geerden, 5334 LH Velddriel, The Netherlands; (B.B.); (J.E.E.)
| | - Hedvig Fébel
- Nutrition Physiology Research Group, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Gesztenyés Str. 1, H-2053 Herceghalom, Hungary;
| | - Katarzyna Nadolna
- Department of Poultry Science and Apiculture, Faculty of Animal Bioengineering, University of Warmia and Mazury, Oczapowskiego 5, 10-719 Olsztyn, Poland; (K.N.); (Ł.S.)
| | - Łukasz Szymański
- Department of Poultry Science and Apiculture, Faculty of Animal Bioengineering, University of Warmia and Mazury, Oczapowskiego 5, 10-719 Olsztyn, Poland; (K.N.); (Ł.S.)
| | - Joan E. Edwards
- Palital Feed Additives B.V., De Tweede Geerden, 5334 LH Velddriel, The Netherlands; (B.B.); (J.E.E.)
| | - Zsuzsanna Neogrády
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (G.M.); (M.M.); (Z.N.)
| | - Krzysztof Kozłowski
- Department of Poultry Science and Apiculture, Faculty of Animal Bioengineering, University of Warmia and Mazury, Oczapowskiego 5, 10-719 Olsztyn, Poland; (K.N.); (Ł.S.)
- Correspondence:
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8
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Stengel S, Petrie KR, Sbirkov Y, Stanko C, Ghazvini Zadegan F, Gil V, Skopek R, Kamiński P, Szymański Ł, Brioli A, Zelent A, Schenk T. Suppression of MYC by PI3K/AKT/mTOR pathway inhibition in combination with all-trans retinoic acid treatment for therapeutic gain in acute myeloid leukaemia. Br J Haematol 2022; 198:338-348. [PMID: 35468223 DOI: 10.1111/bjh.18187] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 01/26/2023]
Abstract
Aberrant activity of the phosphatidylinositol-3 kinase/protein kinase B/mammalian target of rapamycin (PI3K/AKT/mTOR [PAM]) pathway, as well as suppressed retinoic acid signalling, contribute to enhanced proliferation and the differentiation blockade of immature myeloid cells in acute myeloid leukaemia (AML). Inhibition of the PAM pathway was shown to affect especially mixed-lineage leukaemia-rearranged AML. Here, we sought to test a combined strategy using small molecule inhibitors against members of the PAM signalling pathway in conjunction with all-trans retinoic acid (ATRA) to target a larger group of different AML subtypes. We find that ATRA treatment in combination with inhibition of PI3K (ZSTK474), mTOR (WYE132) or PI3K/mTOR (BEZ235, dactolisib) drastically reduces protein levels of the proto-oncogene MYC. In combination with BEZ235, ATRA treatment led to almost complete eradication of cellular MYC, G1 arrest, loss of clonal capacity and terminal granulocytic differentiation. We demonstrate that PAM inhibitor/ATRA treatment targets MYC via independent mechanisms. While inhibition of the PAM pathway causes MYC phosphorylation at threonine 58 via glycogen synthase kinase 3 beta and subsequent degradation, ATRA reduces its expression. Here, we present an approach using a combination of known drugs to synergistically reduce aberrant MYC levels, thereby effectively blocking proliferation and enabling differentiation in various AML subtypes.
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Affiliation(s)
- Sven Stengel
- Division of Gastroenterology, Hepatology and Infectious Diseases, Department of Internal Medicine IV, Jena University Hospital, Jena, Germany
| | - Kevin R Petrie
- School of Medicine, Faculty of Health Sciences and Wellbeing University of Sunderland, Sunderland, UK
| | - Yordan Sbirkov
- Medical University of Plovdiv, Plovdiv, Bulgaria.,Research Institute at Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Clara Stanko
- Department of Hematology and Medical Oncology, Clinic of Internal Medicine II, Jena University Hospital, Jena, Germany.,Institute of Molecular Cell Biology, CMB, Jena University Hospital, Jena, Germany
| | - Faezeh Ghazvini Zadegan
- Department of Hematology and Medical Oncology, Clinic of Internal Medicine II, Jena University Hospital, Jena, Germany.,Institute of Molecular Cell Biology, CMB, Jena University Hospital, Jena, Germany
| | - Veronica Gil
- The Institute of Cancer Research, London, UK.,The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Rafał Skopek
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Magdalenka, Poland
| | - Paweł Kamiński
- Department of Gynecology and Oncological Gynecology, Military Institute of Medicine, Warsaw, Poland
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Magdalenka, Poland
| | - Annamaria Brioli
- Clinic of Internal Medicine C, Hematology and Oncology, Stem Cell Transplantation and Palliative Care, Greifswald University Medicine, Greifswald, Germany
| | - Arthur Zelent
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Magdalenka, Poland
| | - Tino Schenk
- Department of Hematology and Medical Oncology, Clinic of Internal Medicine II, Jena University Hospital, Jena, Germany.,Institute of Molecular Cell Biology, CMB, Jena University Hospital, Jena, Germany
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9
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Kozłowska B, Sochanowicz B, Kraj L, Palusińska M, Kołsut P, Szymański Ł, Lewicki S, Śmigielski W, Kruszewski M, Leszek P. Expression of Iron Metabolism Proteins in Patients with Chronic Heart Failure. J Clin Med 2022; 11:jcm11030837. [PMID: 35160288 PMCID: PMC8837054 DOI: 10.3390/jcm11030837] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 12/14/2021] [Revised: 01/28/2022] [Accepted: 02/03/2022] [Indexed: 11/25/2022] Open
Abstract
In heart failure, iron deficiency is a common comorbid disease that negatively influences exercise tolerance, number of hospitalizations and mortality rate, and this is why iron iv supplementation is recommended. Little is known about the changes in iron-related proteins in the human HF myocardium. The purpose of this study was to assess iron-related proteins in non-failing (NFH) vs. failing (FH) human myocardium. The study group consisted of 58 explanted FHs; control consisted of 31 NFHs unsuitable for transplantation. Myocardial proteins expressions: divalent metal transporter (DMT-1); L-type calcium channel (L-CH); transferrin receptors (TfR-1/TfR-2); ferritins: heavy (FT-H) or light (FT-L) chain, mitochondrial (FT-MT); ferroportin (FPN), regulatory factors and oxidative stress marker: 4-hydroxynonenal (4-HNE). In FH, the expression in almost all proteins responsible for iron transport: DMT-1, TfR-1, L-CH, except TfR-2, and storage: FT-H/-L/-MT were reduced, with no changes in FPN. Moreover, 4-HNE expression (pg/mg; NFH 10.6 ± 8.4 vs. FH 55.7 ± 33.7; p < 0.0001) in FH was increased. HNE-4 significantly correlated with DMT-1 (r = −0.377, p = 0.036), L-CH (r = −0.571, p = 0.001), FT-H (r = −0.379, p = 0.036), also FPN (r = 0.422, p = 0.018). Reducing iron-gathering proteins and elevated oxidative stress in failing hearts is very unfavorable for myocardiocytes. It should be taken into consideration before treatment with drugs or supplements that elevate free oxygen radicals in the heart.
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Affiliation(s)
- Bogna Kozłowska
- Department of Heart Failure and Transplantology, The Cardinal Stefan Wyszyński National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland;
| | - Barbara Sochanowicz
- Centre of Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warszawa, Poland; (B.S.); (M.K.)
| | - Leszek Kraj
- Department of Oncology, Medical University of Warsaw, 01-163 Warsaw, Poland;
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (M.P.); (Ł.S.); (S.L.)
| | - Małgorzata Palusińska
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (M.P.); (Ł.S.); (S.L.)
| | - Piotr Kołsut
- Department of Cardiac Surgery and Transplantology, The Cardinal Stefan Wyszyński National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland;
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (M.P.); (Ł.S.); (S.L.)
| | - Sławomir Lewicki
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (M.P.); (Ł.S.); (S.L.)
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Technology and Humanities, 26-600 Radom, Poland
| | - Witold Śmigielski
- Department of Epidemiology, Cardiovascular Disease Prevention and Health Promotion, The Cardinal Stefan Wyszyński National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland;
| | - Marcin Kruszewski
- Centre of Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warszawa, Poland; (B.S.); (M.K.)
- Department of Molecular Biology and Translational Research, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland
| | - Przemysław Leszek
- Department of Heart Failure and Transplantology, The Cardinal Stefan Wyszyński National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland;
- Correspondence: ; Tel.: +48-22-3434-483
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10
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Cios A, Ciepielak M, Szymański Ł, Lewicka A, Cierniak S, Stankiewicz W, Mendrycka M, Lewicki S. Effect of Different Wavelengths of Laser Irradiation on the Skin Cells. Int J Mol Sci 2021; 22:ijms22052437. [PMID: 33670977 PMCID: PMC7957604 DOI: 10.3390/ijms22052437] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/19/2021] [Accepted: 02/25/2021] [Indexed: 12/22/2022] Open
Abstract
The invention of systems enabling the emission of waves of a certain length and intensity has revolutionized many areas of life, including medicine. Currently, the use of devices emitting laser light is not only an indispensable but also a necessary element of many diagnostic procedures. It also contributed to the development of new techniques for the treatment of diseases that are difficult to heal. The use of lasers in industry and medicine may be associated with a higher incidence of excessive radiation exposure, which can lead to injury to the body. The most exposed to laser irradiation is the skin tissue. The low dose laser irradiation is currently used for the treatment of various skin diseases. Therefore appropriate knowledge of the effects of lasers irradiation on the dermal cells’ metabolism is necessary. Here we present current knowledge on the clinical and molecular effects of irradiation of different wavelengths of light (ultraviolet (UV), blue, green, red, and infrared (IR) on the dermal cells.
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Affiliation(s)
- Aleksandra Cios
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 04-141 Warsaw, Poland; (A.C.); (M.C.); (W.S.)
| | - Martyna Ciepielak
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 04-141 Warsaw, Poland; (A.C.); (M.C.); (W.S.)
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland
- Correspondence:
| | - Aneta Lewicka
- Laboratory of Food and Nutrition Hygiene, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland;
| | - Szczepan Cierniak
- Department of Patomorphology, Military Institute of Medicine, Szaserów 128, 04-141 Warsaw, Poland;
| | - Wanda Stankiewicz
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 04-141 Warsaw, Poland; (A.C.); (M.C.); (W.S.)
| | - Mariola Mendrycka
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Technology and Humanities, 26-600 Radom, Poland;
| | - Sławomir Lewicki
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, 04-141 Warsaw, Poland;
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Szymański Ł, Skopek R, Palusińska M, Schenk T, Stengel S, Lewicki S, Kraj L, Kamiński P, Zelent A. Retinoic Acid and Its Derivatives in Skin. Cells 2020; 9:E2660. [PMID: 33322246 PMCID: PMC7764495 DOI: 10.3390/cells9122660] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/29/2020] [Accepted: 12/07/2020] [Indexed: 12/30/2022] Open
Abstract
The retinoids are a group of compounds including vitamin A and its active metabolite all-trans-retinoic acid (ATRA). Retinoids regulate a variety of physiological functions in multiple organ systems, are essential for normal immune competence, and are involved in the regulation of cell growth and differentiation. Vitamin A derivatives have held promise in cancer treatment and ATRA is used in differentiation therapy of acute promyelocytic leukemia (APL). ATRA and other retinoids have also been successfully applied in a variety of dermatological conditions such as skin cancer, psoriasis, acne, and ichthyosis. Moreover, modulation of retinoic acid receptors and retinoid X (or rexinoid) receptors function may affect dermal cells. The studies using complex genetic models with various combinations of retinoic acid receptors (RARs) and retinoid X (or rexinoid) receptors (RXRs) indicate that retinoic acid and its derivatives have therapeutic potential for a variety of serious dermatological disorders including some malignant conditions. Here, we provide a synopsis of the main advances in understanding the role of ATRA and its receptors in dermatology.
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Affiliation(s)
- Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (Ł.S.); (R.S.); (M.P.)
| | - Rafał Skopek
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (Ł.S.); (R.S.); (M.P.)
| | - Małgorzata Palusińska
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (Ł.S.); (R.S.); (M.P.)
| | - Tino Schenk
- Department of Hematology/Oncology, Clinic of Internal Medicine II, Jena University Hospital, 07747 Jena, Germany;
- Institute of Molecular Cell Biology, Center for Molecular Biomedicine Jena (CMB), Jena University Hospital, 07747 Jena, Germany
| | - Sven Stengel
- Department of Internal Medicine IV, Division of Gastroenterology, Hepatology and Infectious Disease, Jena University Hospital, Friedrich Schiller University of Jena, 07747 Jena, Germany;
| | - Sławomir Lewicki
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
- Department of Medicine, Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Technology and Humanities, 26-600 Radom, Poland
| | - Leszek Kraj
- Department of Oncology, Medical University of Warsaw, 01-163 Warsaw, Poland;
| | - Paweł Kamiński
- Department of Gynecology and Oncological Gynecology, Military Institute of Medicine, 01-163 Warsaw, Poland;
| | - Arthur Zelent
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Postępu 36A, 05-552 Magdalenka, Poland; (Ł.S.); (R.S.); (M.P.)
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Szymański Ł, Sobiczewska E, Cios A, Szymanski P, Ciepielak M, Stankiewicz W. Immunotropic effects in cultured human blood mononuclear cells exposed to a 900 MHz pulse-modulated microwave field. J Radiat Res 2020; 61:27-33. [PMID: 31832654 PMCID: PMC6976861 DOI: 10.1093/jrr/rrz085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/28/2019] [Accepted: 10/31/2019] [Indexed: 05/08/2023]
Abstract
The specific biological effect of electromagnetic field (EMF) remains unknown even though devices present in our daily lives, such as smartphones and Wi-Fi antennae increase the environmental level of electromagnetic radiation. It is said that the human immune system is able to react to discrete environmental stimuli like EMF. To investigate the effect of 900 MHz microwave stimulation on the immune system our research aimed to analyze lymphocyte proliferation and observe and assess the basic immunoregulatory activities using a newly developed and improved anechoic chamber. Samples of mononuclear cells (PBMC) isolated from the blood of healthy donors were exposed to 900 MHz pulse-modulated radiofrequency radiation (20 V/m, SAR 0.024 W/kg) twice (15 min each) or left without irradiation (control group). Subsequently, the control and exposed cells were set up to determine several parameters characterizing T cell immunocompetence and monocyte immunogenic activity. Although the microcultures of PBMC exposed to radiofrequency radiation demonstrated higher immunogenic activity of monocytes (LM index) and T-cell response to concanavalin A than control cultures after first exposure, this parameter decreased after a second stimulation. Saturation of the interleukin-2 (IL-2) receptor rose significantly after the second day of exposure. On the other hand, response to mitogen dropped after EMF stimulation. The results suggest that PBMC are able to overcome stress caused by mitogens after stimulation with 900 MHz radiation.
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Affiliation(s)
- Łukasz Szymański
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Elżbieta Sobiczewska
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Aleksandra Cios
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
- Corresponding Author: Zakład Ochrony Mikrofalowej WIHE, Budynek Izotopów, Szaserów 128, Warsaw, Poland. Tel: 22261817103;
| | - Pawel Szymanski
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Martyna Ciepielak
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Wanda Stankiewicz
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
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13
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Lewicka A, Szymański Ł, Rusiecka K, Kucza A, Jakubczyk A, Zdanowski R, Lewicki S. Supplementation of Plants with Immunomodulatory Properties during Pregnancy and Lactation-Maternal and Offspring Health Effects. Nutrients 2019; 11:nu11081958. [PMID: 31434310 PMCID: PMC6723993 DOI: 10.3390/nu11081958] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/08/2019] [Accepted: 08/16/2019] [Indexed: 12/12/2022] Open
Abstract
A pregnant woman’s diet consists of many products, such as fruits, vegetables, cocoa, tea, chocolate, coffee, herbal and fruit teas, and various commercially available dietary supplements, which contain a high number of biological active plant-derived compounds. Generally, these compounds play beneficial roles in women’s health and the development of fetus health. There are, however, some authors who report that consuming excessive amounts of plants that contain high concentrations of polyphenols may negatively affect the development of the fetus and the offspring’s health. Important and problematic issues during pregnancy and lactation are bacterial infections treatment. In the treatment are proposals to use plant immunomodulators, which are generally considered safe for women and their offspring. Additional consumption of biologically active compounds from plants, however, may increase the risk of occurrences to irreversible changes in the offspring’s health. Therefore, it is necessary to carry out safety tests for immunomodulators before introducing them into a maternal diet. Here, we present data from animal experiments for the four most-studied plants immunomodulators genus: Rhodiola, Echinacea, Panax, and Camellia, which were used in maternal nutrition.
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Affiliation(s)
- Aneta Lewicka
- Laboratory of Epidemiology, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Łukasz Szymański
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Kamila Rusiecka
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Anna Kucza
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Anna Jakubczyk
- Department of Biochemistry and Food Chemistry, University of Life Sciences, Skromna 8, 20-704 Lublin, Poland
| | - Robert Zdanowski
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Sławomir Lewicki
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland.
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Lewicki S, Bałan BJ, Skopińska-Różewska E, Zdanowski R, Stelmasiak M, Szymański Ł, Stankiewicz W. Modulatory effects of feeding pregnant and lactating mice Rhodiola kirilowii extracts on the immune system of offspring. Exp Ther Med 2016; 12:3450-3458. [PMID: 27882178 PMCID: PMC5103842 DOI: 10.3892/etm.2016.3759] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 06/08/2016] [Indexed: 12/11/2022] Open
Abstract
Plants of Rhodiola genus are medicinal herbs that have a number of therapeutic properties, including anti-inflammatory and immunomodulatory activity. The present study aimed to determine whether the use Rhodiola kirilowii as an immunostimulant during pregnancy has an adverse effect on the development of the offspring immune system. Following mating, pregnant mice were placed in three groups that were fed during pregnancy and lactation with R. kirilowii aqueous extract (RKW; 20 mg/kg), R. kirilowii 50% hydro-alcoholic extract (RKW-A; 20 mg/kg) or water (control group), receiving water. Following birth, offspring were given six weeks to develop prior to evaluation of their immune system. Morphometric and morphological examination of the spleen did not reveal any abnormalities or differences between the experimental and control groups. However, both RKW and RKW-A splenic lymphocytes presented a diminished proliferative response to concanavalin A. RKW spleen lymphocytes demonstrated increased metabolic activity following phytohaemagglutinin (PHA) stimulation, which was associated with a higher percentage of cluster of differentiation 4 positive spleen cells and lower interleukin-17a (IL-17a) serum concentration. The RKW-A group exhibited a diminished proliferative response of spleen lymphocytes to PHA and lipopolysaccharide (LPS), and increased serum concentrations of IL-10 and tumor necrosis factor-α (TNF-α). The progeny of mice fed with RKW-A extract demonstrated a significantly lower level of anti-SRBC antibody following immunization compared with progeny of the control (P=0.0305) and RKW (P=0.0331) groups. In conclusion, caution is recommended in the use of RKW and RKW-A extracts as immunostimulants in pregnancy.
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Affiliation(s)
- Sławomir Lewicki
- Department of Regenerative Medicine, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Barbara Joanna Bałan
- Department of Immunology, Biochemistry and Nutrition, Warsaw Medical University, 02-004 Warsaw, Poland
| | - Ewa Skopińska-Różewska
- Department of Pathomorphology, Center for Biostructure Research, Warsaw Medical University, 02-004 Warsaw, Poland
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Robert Zdanowski
- Department of Regenerative Medicine, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Marta Stelmasiak
- Department of Immunology, Biochemistry and Nutrition, Warsaw Medical University, 02-004 Warsaw, Poland
| | - Łukasz Szymański
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
| | - Wanda Stankiewicz
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland
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Abstract
Abstract
A high temperature of thermal plasma provides
more efficient decomposition of the wastes in comparison
to traditional combustion. Due to the high temperature
and high density of energy in the plasma, the destruction
rate is high, which determines a high efficiency waste
decomposition. The main products of pyrolysis plasma
chloroorganic compounds are pyrolysis gas and pyrolysis
coke.
In order to reduce carbon soot, the steam supported
reaction was used. Application of plasma at a temperature
range from 1000 to 1750 K enabled destruction of the
chloroorganic compounds with a very good yield. Several
degradation products were received , which were analyzed.
In the research electric arc plasma was used in the process
of pyrolysis chloroorganic waste utilization. The reactor
with a rotating arc was applied. Selected chloroorganic
compounds were selected as the model: chloromethane
(CH3Cl), carbon tetrachloride (CCl4), chlorobenzene
(C6H5Cl) and dichlorobiphenyl (PCB-C12H8Cl2). Based on
the amount of the individual components, chloroorganic
in the exhaust gases, and the amount introduced to the
plasma decomposition, percentage yield was calculated.
Research results indicated that decomposition
efficiency was more than 99,8% with the exception of CCl4
pyrolysis, which in the exhaust had a content of 0.2%
CCl4.
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Affiliation(s)
- Tomasz Jędrzejczyk
- Lodz University of Technology Institute of General Food Chemistry, 90-924 Lodz, Poland
| | - Zbigniew Kołaciński
- Lodz University of Technology Institute of Mechatronics and Information Systems, 90-924 Lodz, Poland
| | - Dariusz Koza
- Lodz University of Technology Institute of Mechatronics and Information Systems, 90-924 Lodz, Poland
| | - Grzegorz Raniszewski
- Lodz University of Technology Institute of Mechatronics and Information Systems, 90-924 Lodz, Poland
| | - Łukasz Szymański
- Lodz University of Technology Institute of Mechatronics and Information Systems, 90-924 Lodz, Poland
| | - Sławomir Wiak
- Lodz University of Technology Institute of Mechatronics and Information Systems, 90-924 Lodz, Poland
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