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Lica JJ, Wieczór M, Grabe GJ, Heldt M, Jancz M, Misiak M, Gucwa K, Brankiewicz W, Maciejewska N, Stupak A, Bagiński M, Rolka K, Hellmann A, Składanowski A. Effective Drug Concentration and Selectivity Depends on Fraction of Primitive Cells. Int J Mol Sci 2021; 22:ijms22094931. [PMID: 34066491 PMCID: PMC8125035 DOI: 10.3390/ijms22094931] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 03/05/2021] [Revised: 04/15/2021] [Accepted: 04/23/2021] [Indexed: 12/25/2022] Open
Abstract
Poor efficiency of chemotherapeutics in the eradication of Cancer Stem Cells (CSCs) has been driving the search for more active and specific compounds. In this work, we show how cell density-dependent stage culture profiles can be used in drug development workflows to achieve more robust drug activity (IC50 and EC50) results. Using flow cytometry and light microscopy, we characterized the cytological stage profiles of the HL-60-, A-549-, and HEK-293-derived sublines with a focus on their primitive cell content. We then used a range of cytotoxic substances—C-123, bortezomib, idarubicin, C-1305, doxorubicin, DMSO, and ethanol—to highlight typical density-related issues accompanying drug activity determination. We also showed that drug EC50 and selectivity indices normalized to primitive cell content are more accurate activity measurements. We tested our approach by calculating the corrected selectivity index of a novel chemotherapeutic candidate, C-123. Overall, our study highlights the usefulness of accounting for primitive cell fractions in the assessment of drug efficiency.
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Affiliation(s)
- Jan Jakub Lica
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland; (K.G.); (K.R.)
- Correspondence:
| | - Miłosz Wieczór
- Department of Physical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland;
| | - Grzegorz Jan Grabe
- Department of Microbiology, Harvard Medical School, 4 Blackfan Circle, Boston, MA 02115, USA;
| | - Mateusz Heldt
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
| | - Marta Jancz
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
| | - Majus Misiak
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
| | - Katarzyna Gucwa
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland; (K.G.); (K.R.)
| | - Wioletta Brankiewicz
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
| | - Natalia Maciejewska
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
| | - Anna Stupak
- Polpharma Biologics S.A., Gdansk Science & Technology Park, Building A, 80-172 Gdansk, Poland;
| | - Maciej Bagiński
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
| | - Krzysztof Rolka
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland; (K.G.); (K.R.)
| | - Andrzej Hellmann
- Department of Hematology and Transplantology, Medical University of Gdansk, 80-214 Gdansk, Poland;
| | - Andrzej Składanowski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland; (M.H.); (M.J.); (M.M.); (W.B.); (N.M.); (M.B.); (A.S.)
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Lica JJ, Grabe GJ, Heldt M, Misiak M, Bloch P, Serocki M, Switalska M, Wietrzyk J, Baginski M, Hellmann A, Borowski E, Skladanowski A. Cell Density-Dependent Cytological Stage Profile and Its Application for a Screen of Cytostatic Agents Active Toward Leukemic Stem Cells. Stem Cells Dev 2018; 27:488-513. [PMID: 29431006 DOI: 10.1089/scd.2017.0245] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Proliferation and expansion of leukemia is driven by leukemic stem cells (LSCs). Multidrug resistance (MDR) of LSCs is one of the main reasons of failure and relapses in acute myeloid leukemia (AML) treatment. In this study, we show that maintaining HL-60 at low cell culture density or applying a 240-day treatment with anthrapyridazone (BS-121) increased the percentage of primitive cells, which include LSCs determining the overall stage profile. This change manifested in morphology, expression of both cell surface markers and redox-state proteins, as well as mitochondrial potential. Moreover, four sublines were generated, each with unique and characteristic stage profile and cytostatic sensitivity. Cell density-induced culture alterations (affecting stage profiles) were exploited in a screen of anthrapyridazones. Among the compound tested, C-123 was the most potent against primitive cell stages while generating relatively low amounts of reactive oxygen species (ROS). Furthermore, it had low toxicity in vivo and weakly affected blood morphology of healthy mice. The cell density-dependent stage profiles could be utilized in preliminary drug screens for activity against LSCs or in construction of patient-specific platforms to find drugs effective in case of AML relapse (drug extrapolation). The correlation between ROS generation in differentiated cells and toxic effect observed in HL-60 has a potential application in myelotoxicity predictions. The discovered properties of C-123 indicate its potential application in AML treatment, specifically in conditioned myeloablation preceding allogeneic transplantation and/or ex vivo treatment preceding autologous transplantation.
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Affiliation(s)
- Jan J Lica
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland
| | - Grzegorz J Grabe
- 2 Department of Medicine, Imperial College London , London, United Kingdom
| | - Mateusz Heldt
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland
| | - Majus Misiak
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland
| | - Patrycja Bloch
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland
| | - Marcin Serocki
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland .,3 Department of Biology and Pharmaceutical Botany, Medical University of Gdansk , Gdansk, Poland
| | - Marta Switalska
- 4 Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy , Polish Academy of Sciences, Wroclaw, Poland
| | - Joanna Wietrzyk
- 4 Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy , Polish Academy of Sciences, Wroclaw, Poland
| | - Maciej Baginski
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland
| | - Andrzej Hellmann
- 5 Department of Hematology and Transplantology, Medical University of Gdansk , Gdansk, Poland
| | - Edward Borowski
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland .,6 BLIRT S.A. (BioLab Innovative Research Technologies) , Gdansk, Poland
| | - Andrzej Skladanowski
- 1 Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology , Gdansk, Poland
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Misiak M, Heldt M, Szeligowska M, Mazzini S, Scaglioni L, Grabe GJ, Serocki M, Lica J, Switalska M, Wietrzyk J, Beretta GL, Perego P, Zietkowski D, Baginski M, Borowski E, Skladanowski A. Molecular basis for the DNA damage induction and anticancer activity of asymmetrically substituted anthrapyridazone PDZ-7. Oncotarget 2017; 8:105137-105154. [PMID: 29285240 PMCID: PMC5739627 DOI: 10.18632/oncotarget.21806] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 04/07/2017] [Accepted: 09/23/2017] [Indexed: 12/11/2022] Open
Abstract
Anthrapyridazones, imino analogues of anthraquinone, constitute a family of compounds with remarkable anti-cancer activity. To date, over 20 derivatives were studied, of which most displayed nanomolar cytotoxicity towards broad spectrum of cancer cells, including breast, prostate and leukemic ones. BS-154, the most potent derivative, had IC50 values close to 1 nM, however, it was toxic in animal studies. Here, we characterize another anthrapyridazone, PDZ-7, which retains high cytotoxicity while being well tolerated in mice. PDZ-7 is also active in vivo against anthracycline-resistant tumor in a mouse xenograft model and induces DNA damage in proliferating cells, preferentially targeting cells in S and G2 phases of the cell cycle. Activation of Mre11-Rad50-Nbs1 (MRN) complex and phosphorylation of H2AX suggest double-stranded DNA breaks as a major consequence of PDZ-7 treatment. Consistent with this, PDZ-7 treatment blocked DNA synthesis and resulted in cell cycle arrest in late S and G2 phases. Analysis of topoisomerase IIα activity and isolation of the stabilized covalent topoisomerase IIα - DNA complex in the presence of PDZ-7 suggests that this compound is a topoisomerase IIα poison. Moreover, PDZ-7 interfered with actin polymerization, thereby implying its action as a dual inhibitor of processes critical for dividing cells. Using nuclear magnetic resonance (NMR) spectroscopy we show that PDZ-7 interacts with DNA double helix and quadruplex DNA structure. Taken together, our results suggest that PDZ-7 is a unique compound targeting actin cytoskeleton and DNA.
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Affiliation(s)
- Majus Misiak
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Mateusz Heldt
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Marlena Szeligowska
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Stefania Mazzini
- Department of Food, Environmental and Nutritional Sciences, Division of Chemistry and Molecular Biology, University of Milan, Milan, Italy
| | - Leonardo Scaglioni
- Department of Food, Environmental and Nutritional Sciences, Division of Chemistry and Molecular Biology, University of Milan, Milan, Italy
| | - Grzegorz J Grabe
- Department of Medicine, Faculty of Medicine, Imperial College London, London, UK
| | - Marcin Serocki
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Jan Lica
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Marta Switalska
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Joanna Wietrzyk
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Giovanni L Beretta
- Molecular Pharmacology Unit, Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Paola Perego
- Molecular Pharmacology Unit, Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | | | - Maciej Baginski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Edward Borowski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland.,BS-154 sp. z o.o., Gdansk, Poland
| | - Andrzej Skladanowski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
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4
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Newsham KK, Eidesen PB, Davey ML, Axelsen J, Courtecuisse E, Flintrop C, Johansson AG, Kiepert M, Larsen SE, Lorberau KE, Maurset M, McQuilkin J, Misiak M, Pop A, Thompson S, Read DJ. Arbuscular mycorrhizas are present on Spitsbergen. Mycorrhiza 2017; 27:725-731. [PMID: 28695334 DOI: 10.1007/s00572-017-0785-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 02/28/2017] [Accepted: 06/12/2017] [Indexed: 05/26/2023]
Abstract
A previous study of 76 plant species on Spitsbergen in the High Arctic concluded that structures resembling arbuscular mycorrhizas were absent from roots. Here, we report a survey examining the roots of 13 grass and forb species collected from 12 sites on the island for arbuscular mycorrhizal (AM) colonisation. Of the 102 individuals collected, we recorded AM endophytes in the roots of 41 plants of 11 species (Alopecurus ovatus, Deschampsia alpina, Festuca rubra ssp. richardsonii, putative viviparous hybrids of Poa arctica and Poa pratensis, Poa arctica ssp. arctica, Trisetum spicatum, Coptidium spitsbergense, Ranunculus nivalis, Ranunculus pygmaeus, Ranunculus sulphureus and Taraxacum arcticum) sampled from 10 sites. Both coarse AM endophyte, with hyphae of 5-10 μm width, vesicles and occasional arbuscules, and fine endophyte, consisting of hyphae of 1-3 μm width and sparse arbuscules, were recorded in roots. Coarse AM hyphae, vesicles, arbuscules and fine endophyte hyphae occupied 1.0-30.7, 0.8-18.3, 0.7-11.9 and 0.7-12.8% of the root lengths of colonised plants, respectively. Principal component analysis indicated no associations between the abundances of AM structures in roots and edaphic factors. We conclude that the AM symbiosis is present in grass and forb roots on Spitsbergen.
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Affiliation(s)
- K K Newsham
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway.
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - P B Eidesen
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - M L Davey
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - J Axelsen
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - E Courtecuisse
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - C Flintrop
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - A G Johansson
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - M Kiepert
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - S E Larsen
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - K E Lorberau
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - M Maurset
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - J McQuilkin
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - M Misiak
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - A Pop
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - S Thompson
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
| | - D J Read
- Department of Arctic Biology, The University Centre in Svalbard, P.O. Box 156, N-9171, Longyearbyen, Svalbard, Norway
- Department of Animal and Plant Sciences, The University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
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Daśko M, Przybyłowska M, Rachon J, Masłyk M, Kubiński K, Misiak M, Składanowski A, Demkowicz S. Synthesis and biological evaluation of fluorinated N -benzoyl and N -phenylacetoyl derivatives of 3-(4-aminophenyl)-coumarin-7- O -sulfamate as steroid sulfatase inhibitors. Eur J Med Chem 2017; 128:79-87. [DOI: 10.1016/j.ejmech.2017.01.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/30/2016] [Accepted: 01/21/2017] [Indexed: 11/26/2022]
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Misiak M, Mantegazza F, L. Beretta G. Methods for Elucidation of DNA-Anticancer Drug Interactions and their Applications in the Development of New Drugs. Curr Pharm Des 2017; 22:6596-6611. [DOI: 10.2174/1381612822666160831114622] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 08/25/2016] [Indexed: 11/22/2022]
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Kozak W, Daśko M, Wołos A, Masłyk M, Kubiński K, Składanowski A, Misiak M, Rachon J, Demkowicz S. Synthesis and steroid sulfatase inhibitory activities of N-alkanoyl tyramine phosphates and thiophosphates. RSC Adv 2015. [DOI: 10.1039/c5ra01614b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of phosphate and thiophosphate analogs based on the frameworks of N-alkanoyl tyramines have been synthesized and biologically evaluated.
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Affiliation(s)
- Witold Kozak
- Department of Organic Chemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - Mateusz Daśko
- Department of Organic Chemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - Agnieszka Wołos
- Department of Organic Chemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - Maciej Masłyk
- Department of Molecular Biology
- Faculty of Biotechnology and Environment Sciences
- The John Paul II Catholic University of Lublin
- 20-708 Lublin
- Poland
| | - Konrad Kubiński
- Department of Molecular Biology
- Faculty of Biotechnology and Environment Sciences
- The John Paul II Catholic University of Lublin
- 20-708 Lublin
- Poland
| | - Andrzej Składanowski
- Department of Pharmaceutical Technology and Biochemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - Majus Misiak
- Department of Pharmaceutical Technology and Biochemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - Janusz Rachon
- Department of Organic Chemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - Sebastian Demkowicz
- Department of Organic Chemistry
- Chemical Faculty
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
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Gnach A, Prorok K, Misiak M, Cichy B, Bednarkiewicz A. Up-converting NaYF4:0.1%Tm3+, 20%Yb3+ nanoparticles as luminescent labels for deep-tissue optical imaging. J RARE EARTH 2014. [DOI: 10.1016/s1002-0721(14)60053-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Lorenz L, Dang J, Misiak M, Tameh Abolfazl A, Beyer C, Kipp M. Combined 17beta-oestradiol and progesterone treatment prevents neuronal cell injury in cortical but not midbrain neurones or neuroblastoma cells. J Neuroendocrinol 2009; 21:841-9. [PMID: 19686448 DOI: 10.1111/j.1365-2826.2009.01903.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [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] [Indexed: 11/30/2022]
Abstract
Oestrogens are powerful endogenous and exogenous neuroprotective hormones in animal models of brain injury, including focal cerebral ischaemia. This protective effect has been demonstrated under a variety of different treatments and injury paradigms, such as in vivo and in vitro stroke conditions. Neuroprotection in the central nervous system by progesterone is less defined. In the present study, cultured cortical and midbrain mouse neurones and human neuroblastoma cells (SH-SY5Y) were exposed to combined glucose-serum deprivation (CGSD), which is regarded as a reliable model mimicking the effects of ischaemia in vitro. Cell viability was assayed using lactate dehydrogenase release and metabolic activity. Conditions for CGSD treatment were chosen to yield half-maximal cell death rates. The validity of CGSD in vitro was compared with permanent middle cerebral artery occlusion (MCAO) in vivo. CGSD for 4 h induced half-maximal neuronal cell death. MCAO in vivo for the same period resulted in significant neuronal loss, also suggesting the validity of CGSD as a suitable stroke-like in vitro model. Combined steroid treatment (17beta-oestradiol and progesterone) but not the application of single steroids abolished CGSD-induced cell death of cortical neurones in vitro. By contrast, no cell protection was found in midbrain neurones or neuroblastoma cells. The co-application of oestrogen (ICI 182,780) or progesterone (RU-486) receptor antagonists did not obviously counteract the protective steroid effects. This suggests the operation of nonclassical steroid mechanisms and their implication in mediation of hormonal effects. The surplus of combined protective hormonal effects might be a result of the observed influence of progesterone application on neuronal oestradiol synthesis. The data obtained in the present study clearly highlight the potential of a combined steroid treatment under toxic degenerative brain pathologies.
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Affiliation(s)
- L Lorenz
- Institute of Neuroanatomy, Faculty of Medicine, RWTH Aachen University, Aachen, Germany.
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10
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Misiak M, Asatrian HM, Bieri K, Czakon M, Czarnecki A, Ewerth T, Ferroglia A, Gambino P, Gorbahn M, Greub C, Haisch U, Hovhannisyan A, Hurth T, Mitov A, Poghosyan V, Slusarczyk M, Steinhauser M. Estimate of B(B(over) -->Xgamma) at O(alpha(s)2). Phys Rev Lett 2007; 98:022002. [PMID: 17358597 DOI: 10.1103/physrevlett.98.022002] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2006] [Indexed: 05/14/2023]
Abstract
Combining our results for various O(alpha[s]) corrections to the weak radiative B-meson decay, we are able to present the first estimate of the branching ratio at the next-to-next-to-leading order in QCD. We find B(B[over ]-->X[s]gamma)=(3.15+/-0.23) x 10(-4) for Egamma>1.6 GeV in the B[over ]-meson rest frame. The four types of uncertainties:nonperturbative (5%), parametric (3%), higher-order (3%), and m(c)-interpolation ambiguity (3%) have been added in quadrature to obtain the total error.
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Affiliation(s)
- M Misiak
- Institute of Theoretical Physics, Warsaw University, PL-00-681 Warsaw, Poland and Theoretical Physics Division, CERN, CH-1211 Geneva 23, Switzerland
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Misiak M, Jarosz J, Symonides M, Kamińska B. Effectiveness evaluation of available without prescription medicines for postoperative pain treatment after "one day surgery". Ortop Traumatol Rehabil 2001; 3:426-429. [PMID: 17984923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The quality of pain relief during the first 24 hours following day case surgery has been poorly documented. This study was conducted to evaluate the quality of postoperative pain relief when using dexibuprofen or paracetamol. 127 patients in the age group 17-78 who underwent day case surgery were asked to complete questionnaire 24 hours after the end of the operation. The majority of patients (74,02%) had pain after operation. 66,14% had only mild pain (VAS 1-5), 7,87% had difficulty in sleeping at night due to severe pain (VAS 6-8). In 88,89% of outpatients the use of dexibuprofen or paracetamol was effective with pain relief.
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Affiliation(s)
- M Misiak
- Zakład Anestozjologii, Centrum Onkologii - Instytut im. Marii Skłodowskiej-Curie, Warszawa
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Cho P, Misiak M. b-->s gamma decay in SU(2)L x SU(2)R x U(1) extensions of the standard model. Phys Rev D Part Fields 1994; 49:5894-5903. [PMID: 10016916 DOI: 10.1103/physrevd.49.5894] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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14
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Mankiewicz L, Misiak M. Vacuum polarization in gravitational and electromagnetic fields around a superconducting string. Int J Clin Exp Med 1989; 40:2134-2136. [PMID: 10012047 DOI: 10.1103/physrevd.40.2134] [Citation(s) in RCA: 5] [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]
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