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Keyl J, Bucher A, Jungmann F, Hosch R, Ziller A, Armbruster R, Malkomes P, Reissig TM, Koitka S, Tzianopoulos I, Keyl P, Kostbade K, Albers D, Markus P, Treckmann J, Nassenstein K, Haubold J, Makowski M, Forsting M, Baba HA, Kasper S, Siveke JT, Nensa F, Schuler M, Kaissis G, Kleesiek J, Braren R. Prognostic value of deep learning-derived body composition in advanced pancreatic cancer-a retrospective multicenter study. ESMO Open 2024; 9:102219. [PMID: 38194881 PMCID: PMC10837775 DOI: 10.1016/j.esmoop.2023.102219] [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] [Received: 09/03/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Despite the prognostic relevance of cachexia in pancreatic cancer, individual body composition has not been routinely integrated into treatment planning. In this multicenter study, we investigated the prognostic value of sarcopenia and myosteatosis automatically extracted from routine computed tomography (CT) scans of patients with advanced pancreatic ductal adenocarcinoma (PDAC). PATIENTS AND METHODS We retrospectively analyzed clinical imaging data of 601 patients from three German cancer centers. We applied a deep learning approach to assess sarcopenia by the abdominal muscle-to-bone ratio (MBR) and myosteatosis by the ratio of abdominal inter- and intramuscular fat to muscle volume. In the pooled cohort, univariable and multivariable analyses were carried out to analyze the association between body composition markers and overall survival (OS). We analyzed the relationship between body composition markers and laboratory values during the first year of therapy in a subgroup using linear regression analysis adjusted for age, sex, and American Joint Committee on Cancer (AJCC) stage. RESULTS Deep learning-derived MBR [hazard ratio (HR) 0.60, 95% confidence interval (CI) 0.47-0.77, P < 0.005] and myosteatosis (HR 3.73, 95% CI 1.66-8.39, P < 0.005) were significantly associated with OS in univariable analysis. In multivariable analysis, MBR (P = 0.019) and myosteatosis (P = 0.02) were associated with OS independent of age, sex, and AJCC stage. In a subgroup, MBR and myosteatosis were associated with albumin and C-reactive protein levels after initiation of therapy. Additionally, MBR was also associated with hemoglobin and total protein levels. CONCLUSIONS Our work demonstrates that deep learning can be applied across cancer centers to automatically assess sarcopenia and myosteatosis from routine CT scans. We highlight the prognostic role of our proposed markers and show a strong relationship with protein levels, inflammation, and anemia. In clinical practice, automated body composition analysis holds the potential to further personalize cancer treatment.
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Affiliation(s)
- J Keyl
- Institute for Artificial Intelligence in Medicine, University Hospital Essen (AöR), Essen, Germany; Institute of Pathology, University Hospital Essen (AöR), Essen, Germany.
| | - A Bucher
- Institute for Diagnostic and Interventional Radiology, Goethe University Frankfurt, Frankfurt am Main, Germany; German Cancer Consortium (DKTK), Frankfurt partner site, Heidelberg, Germany
| | - F Jungmann
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany; Artificial Intelligence in Healthcare and Medicine, School of Computation, Information and Technology, Technical University of Munich, Munich, Germany
| | - R Hosch
- Institute for Artificial Intelligence in Medicine, University Hospital Essen (AöR), Essen, Germany
| | - A Ziller
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany; Artificial Intelligence in Healthcare and Medicine, School of Computation, Information and Technology, Technical University of Munich, Munich, Germany
| | - R Armbruster
- Institute for Diagnostic and Interventional Radiology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - P Malkomes
- Department of General, Visceral and Transplant Surgery, Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - T M Reissig
- Department of Medical Oncology, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; German Cancer Consortium (DKTK), Partner site University Hospital Essen (AöR), Essen, Germany; Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK Partner Site Essen) and German Cancer Research Center, DKFZ, Heidelberg, Germany
| | - S Koitka
- Institute for Artificial Intelligence in Medicine, University Hospital Essen (AöR), Essen, Germany; Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen (AöR), Essen, Germany
| | - I Tzianopoulos
- Department of Medical Oncology, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK Partner Site Essen) and German Cancer Research Center, DKFZ, Heidelberg, Germany
| | - P Keyl
- Institute of Pathology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - K Kostbade
- Department of Medical Oncology, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - D Albers
- Department of Gastroenterology, Elisabeth Hospital Essen, Essen, Germany
| | - P Markus
- Department of General Surgery and Traumatology, Elisabeth Hospital Essen, Essen, Germany
| | - J Treckmann
- West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany; Department of General, Visceral and Transplant Surgery, University Hospital Essen, Essen, Germany
| | - K Nassenstein
- Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - J Haubold
- Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - M Makowski
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - M Forsting
- German Cancer Consortium (DKTK), Partner site University Hospital Essen (AöR), Essen, Germany; Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - H A Baba
- Institute of Pathology, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - S Kasper
- Department of Medical Oncology, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; German Cancer Consortium (DKTK), Partner site University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - J T Siveke
- Department of Medical Oncology, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; German Cancer Consortium (DKTK), Partner site University Hospital Essen (AöR), Essen, Germany; Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK Partner Site Essen) and German Cancer Research Center, DKFZ, Heidelberg, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - F Nensa
- Institute for Artificial Intelligence in Medicine, University Hospital Essen (AöR), Essen, Germany; German Cancer Consortium (DKTK), Partner site University Hospital Essen (AöR), Essen, Germany; Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - M Schuler
- Department of Medical Oncology, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany; National Center for Tumor Diseases (NCT), NCT West, Essen, Germany
| | - G Kaissis
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany; Artificial Intelligence in Healthcare and Medicine, School of Computation, Information and Technology, Technical University of Munich, Munich, Germany
| | - J Kleesiek
- Institute for Artificial Intelligence in Medicine, University Hospital Essen (AöR), Essen, Germany; West German Cancer Center, University Hospital Essen (AöR), Essen, Germany; German Cancer Consortium (DKTK), Partner site University Hospital Essen (AöR), Essen, Germany; Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - R Braren
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany; German Cancer Consortium (DKTK), Munich partner site, Heidelberg, Germany
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Wojtowicz A, Witkowski M, Drozdowski W, Makowski M, Galazka Z. Scintillation and radioluminescence mechanism in β-Ga 2O 3 semiconducting single crystals. Heliyon 2023; 9:e21240. [PMID: 37942148 PMCID: PMC10628680 DOI: 10.1016/j.heliyon.2023.e21240] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 11/10/2023] Open
Abstract
In this paper, we present the results of experiments on samples of β-Ga2O3 single crystals under a project aimed at assessing and improving the scintillation performance of this material by studying scintillation and radioluminescence mechanism and its limitations. In addition to standard experiments, such as scintillation light yields and time profiles, radio-, and thermoluminescence, we developed and tested a new and promising two-beam experiment, in which a sample is excited by an X-ray beam and additionally stimulated by an IR laser diode. Fe and Mg doping compensate for the inherent n-type conductivity of β-Ga2O3 to obtain semi-insulating single crystals for large-area substrates and wafers. At the same time, residual Fe and Ir are ubiquitous uncontrolled impurities leached from the Ir crucibles used to grow large bulk crystals by the Czochralski method. For these experiments, we selected four samples cut from the Czochralski grown 2-cm diameter β-Ga2O3 single crystal boules; one with a reduced Fe content, two unintentionally Fe- and Ir-doped (UID) with lower and higher Fe content, and one doped with Mg. We find that steady-state radioluminescence spectra measured at temperatures between 10 and 350 K are dominated by the UV emission peaking at about 350-370 nm. Unfortunately, even for the best sample with a reduced Fe-content, the intensity of this emission drops precipitously with the temperature down to about 10 % at 300 K. From the two-beam experiments, we conclude that recombination via inadvertent Fe impurity involving three charge states (2+, 3+, and 4+) may reduce a steady-state UV emission of β-Ga2O3 under X-ray excitation by as much as 60-70 %, one-third to one-half of which is due to the recombination (specific for Fe-doped β-Ga2O3) involving the 4+ and 3+ charge states of Fe and the remaining 50-70 % being due to a more familiar route typical of other oxides, involving the 2+ and 3+ charge states of Fe. These losses are at higher temperatures enhanced by a thermally activated redistribution of self-trapped holes (STHs). In addition, the trapping of electrons by Fe and holes by Mg, Fe, and Ir may be responsible for scintillation light loss and reduction of the zero-time amplitude essential for the fast timing scintillation applications. Despite indirect evidence of competitive recombination in β-Ga2O3 involving a deep Ir3+/4+ donor level, we could not quantitatively assess losses of the UV steady state radioluminescence light due to the inadvertent Ir impurity.
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Affiliation(s)
- A.J. Wojtowicz
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| | - M.E. Witkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| | - W. Drozdowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| | - M. Makowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| | - Z. Galazka
- Leibniz Institute for Crystal Growth (IKZ), Max-Born-Str. 2, 12489, Berlin, Germany
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Krilaviciute A, Lakes J, Radtke J, Herkommer K, Gschwend J, Peters I, Kuczyk M, Koerber S, Debus J, Kristiansen G, Schimmöller L, Antoch G, Makowski M, Wacker F, Schlemmer H, Benner A, Giesel F, Siener R, Arsov C, Hadaschik B, Kaaks R, Becker N, Albers P. Digital Rectal Examination (DRE) is not useful as a solitary screening tool for prostate cancer in young men – Results from the PROBASE trial. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00939-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Makowski M, Bomba J, Frej A, Kolodziejczyk M, Sypek M, Shimobaba T, Ito T, Kirilyuk A, Stupakiewicz A. Dynamic complex opto-magnetic holography. Nat Commun 2022; 13:7286. [PMID: 36435872 PMCID: PMC9701213 DOI: 10.1038/s41467-022-35023-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 11/15/2022] [Indexed: 11/28/2022] Open
Abstract
Despite recent significant progress in real-time, large-area computer-generated holography, its memory requirements and computational loads will be hard to tackle for several decades to come with the current paradigm based on a priori calculations and bit-plane writing to a spatial light modulator. Here we experimentally demonstrate a holistic approach to serial computation and repeatable writing of computer-generated dynamic holograms without Fourier transform, using minimal amounts of computer memory. We use the ultrafast opto-magnetic recording of holographic patterns in a ferrimagnetic film with femtosecond laser pulses, driven by the on-the-fly hardware computation of a single holographic point. The intensity-threshold nature of the magnetic medium allows sub-diffraction-limited, point-by-point toggling of arbitrarily localized magnetic spots on the sample, according to the proposed circular detour-phase encoding, providing complex modulation and symmetrical suppression of upper diffractive orders and conjugated terms in holographically reconstructed 3-D images. Holography recreates both the amplitude and wave front of a three dimensional object, meaning that the observer perceives the image in the nearly same way as they would the true object. Creating such holographic images is challenging computationally, and requires extremely fast display update. Here, the authors combine a fast memoryless computation algorithm with the ultra-rapid writing based on all-optical switching of a ferrimagnetic film.
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Diekhoff T, Deppe D, Poddubnyy D, Ziegeler K, Proft F, Hermann KG, Protopopov M, Radny F, Makowski M. AB0796 Quantitative bone marrow lesion characterization at the sacroiliac joint with T1-mapping. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1537] [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: 11/04/2022]
Abstract
BackgroundConventional magnetic resonance imaging (MRI) uses T1-weighted and short-tau inversion recovery (STIR) sequences to characterize bone marrow lesions in axial spondyloarthritis. However, quantification is restricted to the extent of marrow lesions because signal intensities are highly variable within and across patients and scanners. Furthermore, some marrow lesions are less visible in MRI and need further characterization with computed tomography (CT), e.g. sclerosis. Quantitative MRI in form of mapping sequences might help to better characterize bone marrow lesions.ObjectivesTo evaluate the performance of T1-mapping for differentiating different bone marrow lesions at the sacroiliac joints in patients with suspected axial spondyloarthritis.MethodsSixty-two patients (mean age 41±12.5; thirty-two were finally diagnosed with axial spondyloarthritis and 30 with another condition) underwent CT and MRI of the sacroiliac joints. Besides standard oblique coronal T1 and STIR sequences a T1-mapping sequence (Modified Look-Locker Inversion Recovery) was added to the protocol. Bone marrow lesions (maximum 4 lesions per patient, 1 lesion of the same type per joint) were characterized by an expert radiologist into four groups, namely sclerosis (lesion type (LT) 1), osteitis (LT2), fat lesion (LT3) and mixed marrow lesions (LTm). Relaxation times on T1-maps were compared using Kruskal-Wallis test correcting for multiple comparisons and correlated to quantitative measures from conventional MRI sequences and CT.Results119 lesions were selected (LT1: 38, LT2: 27, LT3: 40; LTm: 14). T1-map showed highly significant differences between LT1-3 with the lowest values for sclerosis (1522±227 ms), followed by osteitis (1906±82 ms) and fat lesions (2391±200 ms); p<0.0005. However, mixed lesions showed a broad distribution of values (1869±670), irrespective of their characteristics. T1-map correlated to a high degree with conventional T1-values (r = 0.74) and Hounsfield units in CT (r = -0.69) with p < 0.0001, respectively, but not with STIR (p = 0.8).ConclusionT1-Mapping allows for accurately characterizing lesions at the sacroiliac joint in patients with suspected axial spondyloarthritis and, thus, may combine information from two conventional sequences and CT into one in the future while providing superior capacity for quantification. However, in our study mixed lesions and inhomogeneous bone marrow remained problematic. Thus, further sequence development is needed before its implementation in clinical routine.Figure 1.T1-mapping values of the different lesions, LT1: Sclerosis, LT2: Osteitis, LT3: Fat lesion, LTm: Mixed lesion. Differences are highly significant, which allows T1-mapping to characterize those different lesions in one sequence.Disclosure of InterestsTorsten Diekhoff Speakers bureau: Novartis, Eli Lilly, MSD, Canon MS, Consultant of: Novartis, Dominik Deppe: None declared, Denis Poddubnyy: None declared, Katharina Ziegeler: None declared, Fabian Proft: None declared, Kay-Geert Hermann: None declared, Mikhail Protopopov: None declared, Felix Radny: None declared, Marcus Makowski: None declared
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Bressem KK, Adams L, Proft F, Hermann KGA, Diekhoff T, Spiller L, Niehues S, Makowski M, Hamm B, Protopopov M, Rios Rodriguez V, Haibel H, Rademacher J, Torgutalp M, Lambert RG, Baraliakos X, Maksymowych WP, Vahldiek JL, Poddubnyy D. OP0152 A DEEP LEARNING FRAMEWORK FOR MRI DETECTION OF ACTIVE INFLAMMATORY AND STRUCTURAL CHANGES IN THE SACROILIAC JOINT CONSISTENT WITH AXIAL SPONDYLOARTHRITIS: AN INTERNATIONAL COLLABORATIVE STUDY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1416] [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: 11/03/2022]
Abstract
BackgroundMagnetic resonance tomography (MRI) plays a key role in the early diagnosis of axial spondyloarthritis (axSpA). However, the detection of changes indicative of axSpA requires specific expertise, which poses a challenge to non-specialized centers. Deep learning (an advanced machine learning method) based on training an artificial neural network may facilitate and support diagnostics in clinical practice.ObjectivesTo create a reliable deep learning tool for the detection of active inflammatory and structural changes indicative of axSpA on MRI of sacroiliac joints.MethodsIn this study, MRIs of sacroiliac joints from 477 patients from four cohorts (GESPIC-AS, GESPIC-Crohn, GESPIC-Uveitis and OptiRef comprising 266 patients with and 211 without axSpA) were used to develop a deep learning framework (randomly divided into training, n=404, and validation, n=73, datasets). MRIs from the ASAS cohort (n=116) were used for independent testing (test dataset). Each examination in the training/validation dataset was evaluated for the presence of active inflammatory and structural changes indicative of SpA by six experienced, trained and calibrated readers and by seven expert readers in the test dataset. The presence of the changes was defined as the majority vote amongst readers. Discordant cases in the training/validation dataset underwent consensus reading. In addition, the test dataset was evaluated by three radiologists not specifically trained in SpA. Diagnostic performance was evaluated using the area under the receiver operating characteristic curve (AUC), accuracy, sensitivity and specificity.ResultsThe prevalence of positive imaging findings for active inflammatory/structural changes indicative of axSpA was 41%/51% in the training/validation dataset and 22%/22% in the test dataset. The model for the detection of active inflammatory changes showed an AUC of 0.91 (0.83 – 0.97) – Figure 1 – and an accuracy of 84% on the validation dataset; the corresponding sensitivity and specificity were 96% and 76%, respectively. Despite a substantially lower prevalence of active inflammatory changes in the test dataset, the model showed good generalization with an AUC of 0.91 (0.84−0.97) and an accuracy of 75%; the sensitivity and specificity were 88% and 71%, respectively. The model demonstrated a similar performance on the validation and test datasets for the detection of active inflammatory changes fulfilling the ASAS definition. The model for the detection of structural changes indicative of axSpA showed good performance on the validation dataset with an AUC of 0.90 (0.82-0.96) for the detection of structural changes and an overall accuracy of 85%. The associated sensitivity and specificity were 95% and 75%, respectively. The model showed reasonable generalization to new data with an AUC of 0.89 (0.81−0.96) and an accuracy of 79%; the sensitivity and specificity were 85% and 78%, respectively. Overall, the model performed close to the individual human experts - Figure 1.ConclusionThe developed framework allowed the detection of active inflammatory and structural changes indicative of axSpA on MRI. This approach may be used as an assistant tool in the diagnostic workflow.AcknowledgementsGESPIC-AS has been financially supported by the German Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung - BMBF). GESPIC-Crohn has been supported by the Clinical Research Unit grant from the Berlin Institute of Health (BIH). GESPIC-Uveitis has been supported by a research grant from AbbVie. OptiRef has been supported by a research grant from Novartis. The Assessment of Spondyloarthritis International Society (ASAS) has supported the project with a research grant and provided access to the MRI images of the ASAS calssifiaction cohort.We want to thank colleagues who performed annotation of the images from the ASAS classification cohort: Pedro Machado, Mikkel Ostergaard, Suzanne Juhl Pedersen, Ulrich Weber. Further, we thank Torsten Karge for the development of the MRI reading interface for GESPIC and OptiRef images, Joel Paschke for development of the scoring interface for ASAS images.LCA is grateful for her participation in the BIH Charité–Junior Clinician and Clinician Scientist Program and KKB is grateful for his participation in the BIH Charité Digital Clinician Scientist Program all funded by the Charité–Universitätsmedizin Berlin and the Berlin Institute of Health. JR is grateful for her participation in the BIH Charité–Junior Clinician and Clinician Scientist Program.Disclosure of InterestsNone declared
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Jewgiński MP, Makowski M, Pawełczak M, Goldeman W, Trojanowska-Laskowska A, Kafarski P, Latajka R. Synthesis of Hybrid Tripeptide Peptidomimetics Containing Dehydroamino Acid and Aminophosphonic Acid in the Chain and Evaluation of Their Activity toward Cathepsin C. Chem Biodivers 2022; 19:e202101019. [PMID: 35343636 DOI: 10.1002/cbdv.202101019] [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: 12/23/2021] [Accepted: 03/25/2022] [Indexed: 11/09/2022]
Abstract
Synthesis of a new group of hybrid phosphonodehydropeptides composed of glycyl-(Z)-dehydrophenylalanine and structurally variable aminophosphonates alongside with investigations of their activity towards cathepsin C are presented. Obtained results suggest that the introduction of (Z)-dehydrophenylalanine residue into the short phosphonopeptide chain does induce the ordered conformation. Investigated peptides appeared to act as weak or moderate inhibitors of cathepsin C.
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Affiliation(s)
- Michał Paweł Jewgiński
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Maciej Makowski
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052, Opole, Poland
| | | | - Waldemar Goldeman
- Department of Organic and Medical Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370, Wroclaw, Poland
| | | | - Paweł Kafarski
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370, Wroclaw, Poland.,Faculty of Chemistry, University of Opole, Oleska 48, 45-052, Opole, Poland
| | - Rafał Latajka
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370, Wroclaw, Poland
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Hartenstein A, Lübbe F, Baur ADJ, Rudolph MM, Furth C, Brenner W, Amthauer H, Hamm B, Makowski M, Penzkofer T. Prostate Cancer Nodal Staging: Using Deep Learning to Predict 68Ga-PSMA-Positivity from CT Imaging Alone. Sci Rep 2020; 10:3398. [PMID: 32099001 PMCID: PMC7042227 DOI: 10.1038/s41598-020-60311-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 07/29/2019] [Accepted: 02/11/2020] [Indexed: 02/07/2023] Open
Abstract
Lymphatic spread determines treatment decisions in prostate cancer (PCa) patients. 68Ga-PSMA-PET/CT can be performed, although cost remains high and availability is limited. Therefore, computed tomography (CT) continues to be the most used modality for PCa staging. We assessed if convolutional neural networks (CNNs) can be trained to determine 68Ga-PSMA-PET/CT-lymph node status from CT alone. In 549 patients with 68Ga-PSMA PET/CT imaging, 2616 lymph nodes were segmented. Using PET as a reference standard, three CNNs were trained. Training sets balanced for infiltration status, lymph node location and additionally, masked images, were used for training. CNNs were evaluated using a separate test set and performance was compared to radiologists' assessments and random forest classifiers. Heatmaps maps were used to identify the performance determining image regions. The CNNs performed with an Area-Under-the-Curve of 0.95 (status balanced) and 0.86 (location balanced, masked), compared to an AUC of 0.81 of experienced radiologists. Interestingly, CNNs used anatomical surroundings to increase their performance, "learning" the infiltration probabilities of anatomical locations. In conclusion, CNNs have the potential to build a well performing CT-based biomarker for lymph node metastases in PCa, with different types of class balancing strongly affecting CNN performance.
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Affiliation(s)
- A Hartenstein
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany
| | - F Lübbe
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany
| | - A D J Baur
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany
| | - M M Rudolph
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany
| | - C Furth
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Nuclear Medicine, Charitéplatz 1, 13353, Berlin, Germany
| | - W Brenner
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Nuclear Medicine, Charitéplatz 1, 13353, Berlin, Germany
| | - H Amthauer
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Nuclear Medicine, Charitéplatz 1, 13353, Berlin, Germany
| | - B Hamm
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany
| | - M Makowski
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany.,Institute for Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Straße 22, D-81675, München, Germany
| | - T Penzkofer
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Department of Radiology, Augustenburger Platz 1, 13353, Berlin, Germany. .,Berlin Institute of Health (BIH), Anna-Louisa-Karsch-Str. 2, 10178, Berlin, Germany.
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Engel LC, Landmesser U, Abdelwahed Y, Gigengack K, Manes C, Wurster TH, Skurk C, Leistner DM, Lauten A, Schuster A, Noutsias M, Hamm B, Botnar RM, Makowski M, Bigalke B. P5249Comprehensive invasive and non-invasive assessment of coronary artery lesions with and without hemodynamic significance. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There is limited knowledge about specific morphological parameters beyond the degree of stenosis to further characterize hemodynamically relevant coronary lesions.
Objective
The goal of this study was to identify certain morphological or molecular characteristics that distinguish hemodynamically significant from non-significant coronary lesions using various invasive and non-invasive measures.
Methods
This clinical study included patients with symptoms suggestive of CAD who underwent native T1-weighted CMR and gadofosveset-enhanced CMR as well as invasive coronary angiography between 2015 and 2016. OCT of the culprit vessel to determine the plaque type was performed in a subset of patients. Functional relevance of all lesions was examined using quantitative flow reserve (QFR-Angio). Hemodynamically significant lesions were defined as lesions with a QFR <0.8. Signal intensity (contrast-to-noise ratios; CNRs) on native T1-weighted CMR and gadofosveset-enhanced CMR was defined as a measure for intraplaque hemorrhage and endothelial permeability respectively.
Results
Overall 13 patients (n=28 coronary segments) were included, whose invasive coronary angiograms projections were eligible for QFR analysis. Segments containing lesions with a QFR <0.8 (n=9) were associated with significantly higher signal enhancement on Gadofosveset-enhanced CMR as compared to segments containing a hemodynamically non-relevant lesions (lesion-QFR>0.8; n=19) (7.0±4.9 vs. 3.0±2.6; p=0.02). No differences in signal enhancement were seen on native T1-weighted CMR (2.1±4.3 vs. 3.3±4.1; p=0.24). 66,7% (4 out of 6) of all vulnerable plaque and 33.3% (2 out of 6) of all non-vulnerable plaque (fibroatheroma) as assessed by OCT were hemodynamically significant lesions.
Conclusion
The findings of this small feasibility study suggest that hemodynamically significant lesions are more advanced and associated with a higher grade of endothelial permeability while the presence of intraplaque hemorrhage may not be associated with hemodynamically relevant coronary lesions.
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Affiliation(s)
- L C Engel
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - U Landmesser
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - Y Abdelwahed
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - K Gigengack
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - C Manes
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - T.-H Wurster
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - C Skurk
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - D.-M Leistner
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - A Lauten
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - A Schuster
- Royal North Shore Hospital, Cardiology, Sydney, Australia
| | - M Noutsias
- University Clinic Halle (Saale), cardiology, Halle, Germany
| | - B Hamm
- Charite - Campus Mitte (CCM), Radiology, Berlin, Germany
| | - R M Botnar
- King's College London, Division of Imaging Sciences and Biomedical Engineering, London, United Kingdom
| | - M Makowski
- Charite - Campus Mitte (CCM), Radiology, Berlin, Germany
| | - B Bigalke
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
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10
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Abstract
PURPOSE In 1959, Maroteaux and Lamy initially designated pseudoachondroplasia as a distinct dysplasia different from achondroplasia the most common form of skeletal dysplasia. Pseudoachondroplasia is caused by a mutation in the collagen oligomeric matrix protein gene (COMP) gene on chromosome 19p13.1-p12 encoding the COMP. The COMP gene mutations result in rendering the articular and growth plate cartilages incapable of withstanding routine biomechanical loads with resultant deformity of the joints. The purpose of the study was to characterize the typical orthopaedic findings in pseudoachondroplasia. METHODS The charts and radiographs of 141 patients with pseudoachondroplasia were analyzed. This cohort, to our knowledge, represents the largest group of patients describing the typical orthopaedic manifestations of pseudoachondroplasia. RESULTS Patients with pseudoachondroplasia have normal craniofacial appearance with normal intelligence. Short stature is not present at birth and generally appears by two to four years of age. The condition is a form of spondyloepiphyseal dysplasia and the long bones are characterized by dysplastic changes in the epiphysis, metaphysis and vertebral bodies. Radiographically the long bones have altered the appearance and structure of the epiphyses with small irregularly formed or fragmented epiphyses or flattening. The metaphyseal regions of the long bones show flaring, widening or 'trumpeting'. The cervical (89%) and thoracic and lumbar vertebrae show either platyspondyly, ovoid, 'cod-fish' deformity or anterior 'beaking'. Kyphosis (28%), scoliosis (58%) and lumbar lordosis (100%) are commonly seen. The femoral head and acetabulum are severely dysplastic (100%). The knees show either genu valgum (22%), genu varum (56%) or 'windswept' deformity (22%). CONCLUSION Most commonly these distortions of the appendicular and the axial skeleton lead to premature arthritis particularly of the hips and often the knees not uncommonly in the 20- to 30-year-old age group. LEVEL OF EVIDENCE III.
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Affiliation(s)
- D. S. Weiner
- Department of Orthopaedics, Akron Children’s Hospital, Akron, Ohio, USA,Correspondence should be sent to D. S. Weiner, Department of Orthopaedics, Akron Children’s Hospital, 300 Locust Street, Ste. 250, Akron, OH 44302-1821, USA.
| | - J. Guirguis
- Department of Orthopaedics, Akron Children’s Hospital, Akron, Ohio, USA
| | - M. Makowski
- Department of Orthopaedics, Cleveland Clinic/Akron General, Akron, Ohio, USA
| | - S. Testa
- Rebecca D. Considine Research Institute/Akron Children’s Hospital, Akron, Ohio, USA
| | - L. Shauver
- Rebecca D. Considine Research Institute/Akron Children’s Hospital, Akron, Ohio, USA
| | - D. Morgan
- Rebecca D. Considine Research Institute/Akron Children’s Hospital, Akron, Ohio, USA
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11
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Kowalski Z, Kaczmarek S, Drozdowski W, Witkowski M, Makowski M, Brylew K, Berkowski M, Głowacki M. Radioluminescence, low temperature thermoluminescence and scintillation properties of Ca and Eu doped ZnWO4 single crystals. RADIAT MEAS 2018. [DOI: 10.1016/j.radmeas.2018.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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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12
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Moyer RA, Bykov I, Orlov DM, Evans TE, Lee JS, Teklu AM, Fenstermacher ME, Makowski M, Lasnier CJ, Wang HQ, Watkins JG, Wu W. Imaging divertor strike point splitting in RMP ELM suppression experiments in the DIII-D tokamak. Rev Sci Instrum 2018; 89:10E106. [PMID: 30399795 DOI: 10.1063/1.5038350] [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] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 06/08/2018] [Indexed: 06/08/2023]
Abstract
Fast visible imaging of the lower divertor from above is used to study the structure and dynamics of lobes induced by resonant magnetic perturbations (RMPs) in Edge-Localized Mode (ELM) suppression experiments in DIII-D. The best compromise between the amount of light and sharp imaging was obtained using emission at 601 nm from Fulcher band molecular deuterium. Multiple spatially resolved peaks in the D2 emission, taken as a proxy for the particle flux, are readily resolved during RMPs, in contrast to the heat flux measured by infrared cameras, which shows little spatial structure in ITER-like conditions. The 25 mm objective lens provides high spatial resolution (2-4 mm/pixel) from the centerpost to the outer shelf over 40° toroidally that overlaps the field of view of the IRTV that measures the divertor heat flux, allowing direct comparison in non-axisymmetric discharges. The image is coupled to a Phantom 7.3 camera using a Schott wound fiber bundle, providing high temporal resolution that allows the lobe dynamics to be resolved between ELMs and across ELM suppression onset. These measurements are used to study the heat and particle flux in 3D magnetic fields and to validate models for the plasma response to RMPs.
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Affiliation(s)
- R A Moyer
- Center for Energy Research, University of California San Diego, La Jolla, California 92093-0417, USA
| | - I Bykov
- Center for Energy Research, University of California San Diego, La Jolla, California 92093-0417, USA
| | - D M Orlov
- Center for Energy Research, University of California San Diego, La Jolla, California 92093-0417, USA
| | - T E Evans
- General Atomics, San Diego, California 92186-5608, USA
| | - J S Lee
- University of California, Los Angeles, Los Angeles, California 90095, USA
| | - A M Teklu
- Oregon State University, Corvallis, Oregon 97331, USA
| | - M E Fenstermacher
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M Makowski
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - C J Lasnier
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - H Q Wang
- Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, USA
| | - J G Watkins
- Sandia National Laboratories, California, Livermore, California 94551-0969, USA
| | - W Wu
- General Atomics, San Diego, California 92186-5608, USA
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Abstract
Summary
Aim of this study was to characterize suitable technetium- 99m labeled tracers for lymphoscintigraphy by comparative animal tests. Animals, methods: To evaluate the influence of the particle size and the organ tracer-uptake on lymphtransport animal experiments were performed on six different agents (including one control group). Activity distributions were examined in Sprague-Dawley-rats by lymphoscintigraphy; the maximum uptake (count-rate) of the whole body and in lymph nodes were analyzed by regions- of-interest-technique, respectively. Additionally, for characterization of lymphatic and extralymphatic traceruptake an intra-individual relative count-rate ratio of the liver, lung, kidneys, and spleen has been calculated following organ extraction. Results: Organ specific differences of distribution were clearly demonstrated. Our results indicate that the kinetics of lymphoscintigraphic 99mTc-bound agents substantially depends on particle size. Reliable transport from the interstitium to initial lymph vessels and lymph node uptake suggested for tracers suited for lymphoscintigraphy a median size of about <100 nm. Conclusion: Our data could improve standardization of diagnostic methods and lead to an objective consideration of therapeutic procedures.
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Engel L, Landmesser U, Gigengack K, Wurster T, Girke G, Jaguszewski M, Skurk C, Leistner D, Lauten A, Schuster A, Hamm B, Botnar R, Bigalke B, Makowski M. 4101Noninvasive 3-tesla cardiovascular magnetic resonance imaging assessment of endothelial permeability in patients with prediabetes and diabetes mellitus using an albumin-binding probe. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.4101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Engel L, Landmesser U, Gigengack K, Wurster T, Jaguszewski M, Girke G, Skurk C, Leistner D, Lauten A, Schuster A, Hamm B, Botnar R, Makowski M, Bigalke B. 2225Identification of vulnerable coronary atherosclerotic plaque using molecular 3T CMR imaging with an albumin-binding probe. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.2225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Binkowski B, Makowski M, Kubinski P, Lubinski A. 2880Impact of antazoline on electrophysiologic properties of atrial muscle and conduction system of the heart. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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17
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Amer HA, Schmitzberger F, Ingold-Heppner B, Kussmaul J, El Tohamy MF, Tantawy HI, Hamm B, Makowski M, Fallenberg EM. Digital breast tomosynthesis versus full-field digital mammography-Which modality provides more accurate prediction of margin status in specimen radiography? Eur J Radiol 2017; 93:258-264. [PMID: 28668424 DOI: 10.1016/j.ejrad.2017.05.041] [Citation(s) in RCA: 14] [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: 11/26/2016] [Revised: 05/25/2017] [Accepted: 05/29/2017] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To evaluate the reliability of tumor margin assessment in specimen radiography (SR) using digital breast tomosynthesis (DBT) and full-field digital mammography (FFDM) in comparison to postoperative histopathology margin status as the gold standard. METHODS After ethics committee approval, 102 consecutive patients who underwent breast conservative surgery for nonpalpable proven breast cancer were prospectively included. All patients underwent ultrasound/mammography-guided wire localization of their lesions. After excision, each specimen was marked for orientation and imaged using FFDM and DBT. Two blinded radiologists (R1, R2) independently analyzed images acquired with both modalities. Readers identified in which direction the lesion was closest to the specimen margin and to measure the margin width. Their findings were compared with the final histopathological analysis. True positive margin status was defined as a margin measuring <1mm for invasive cancer and 5mm for ductal carcinoma in situ (DCIS) at imaging and pathology. RESULTS For FFDM, correct margin direction was identified in 45 cases (44%) by R1 and in 37 cases (36%) by R2. For DBT, 69 cases (68%) were correctly identified by R1 and 70 cases (69%) by R2. Overall accuracy was 40% for FFDM and 69% for DBT; the difference was statistically significant (p<0.0001). Sensitivity in terms of correct assessment of margin status was significantly better for DBT than FFDM (77% versus 62%). CONCLUSION SR using DBT is significantly superior to FFDM regarding identification of the closest margin and sensitivity in assessment of margin status.
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Affiliation(s)
- Heba A Amer
- Dept of Radiology, Zagazig University Hospitals, Zagazig, Egypt; Clinic of Radiology, Charité, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Florian Schmitzberger
- Clinic of Radiology, Charité, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany.
| | | | - Julia Kussmaul
- Clinic of Radiology, Charité Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany.
| | | | - Hazim I Tantawy
- Dept of Radiology, Zagazig University Hospitals, Zagazig, Egypt
| | - B Hamm
- Clinic of Radiology, Charité, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany.
| | - M Makowski
- Clinic of Gynacolgy and Breast Center, Charité Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany.
| | - Eva M Fallenberg
- Clinic of Radiology, Charité, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany.
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Lenartowicz P, Dziuk B, Zarychta B, Makowski M, Kafarski P. Michael additions to double bonds of esters of N-protected (s)-phenylalanyldehydroalanine (X-(s)-Phe-ΔAla-OMe) and its phosphonic acid counterpart (X-(s)-Phe-ΔAla-PO(OEt)2). PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1308933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Błażej Dziuk
- Faculty of Chemistry, Opole University, Opole, Poland
| | | | | | - Paweł Kafarski
- Faculty of Chemistry, Wrocław University of Science and Technology, Wrocław, Poland
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19
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Lenartowicz P, Makowski M, Oszywa B, Haremza K, Latajka R, Pawełczak M, Kafarski P. Addition of thiols to the double bond of dipeptide C-terminal dehydroalanine as a source of new inhibitors of cathepsin C. Biochimie 2017; 139:46-55. [PMID: 28528273 DOI: 10.1016/j.biochi.2017.05.011] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 05/15/2017] [Indexed: 11/26/2022]
Abstract
Addition of thiols to double bond of glycyl-dehydroalanine and phenyl-dehydroalanine esters provided micromolar inhibitors of cathepsin C. The structure-activity studies indicated that dipeptides containing N-terminal phenylalanine exhibit higher affinity towards the enzyme. A series of C-terminal S-substituted cysteines are responsible for varying interaction with S1 binding pocket of cathepsin C. Depending on diastereomer these compounds most likely act as slowly reacting substrates or competitive inhibitors. This was proved by TLC analysis of the medium in which interaction of methyl (S)-phenylalanyl-(R,S)-(S-adamantyl)cysteinate (7i) with the enzyme was studied. Molecular modeling enabled to establish their mode of binding showed that S2 pocket is long and narrow and accommodates phenyl group of phenylalanine while significantly spacious sites located at the surface of the enzyme (one of them being S1 pocket) bind the adamantyl moiety oriented in different direction for each stereoisomer. Finally replacement of carboxymethyl moiety of methyl (S)-phenylalanyl-(R,S)-(S-phenyl)cysteinate (7c) with nitrile group provided about 650-times more potent inhibitor of cathepsin C indicating that the studied C-terminal S-substituted cysteines are good activity probes for S1 binding pocket of this enzyme.
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Affiliation(s)
- Paweł Lenartowicz
- Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland.
| | - Maciej Makowski
- Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
| | - Bartosz Oszywa
- Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
| | - Kinga Haremza
- Faculty of Chemistry, Department of Bioorganic Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Rafał Latajka
- Faculty of Chemistry, Department of Bioorganic Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | | | - Paweł Kafarski
- Faculty of Chemistry, Department of Bioorganic Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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20
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Makowski M, Jewgiński M, Hurek J, Poliwoda A, Kafarski P. Kinetics of photochemical isomerization of TFA-Gly-ZΔPhe into TFA-Gly-EΔPhe. ARKIVOC 2017. [DOI: 10.24820/ark.5550190.p009.936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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21
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Böker S, Adams L, Hamm B, Makowski M. Evaluation der suszeptibilitätsgewichteten Magnetresonanztomografie zur Beurteilung von Wirbelkörperfrakturen. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | - B Hamm
- Radiologie Charité, Berlin
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22
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Domienik J, Bissinger A, Grabowicz W, Jankowski Ł, Kręcki R, Makowski M, Masiarek K, Plewka M, Lubiński A, Peruga JZ. The impact of various protective tools on the dose reduction in the eye lens in an interventional cardiology-clinical study. J Radiol Prot 2016; 36:309-318. [PMID: 27183002 DOI: 10.1088/0952-4746/36/2/309] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aim of the study was to check, in clinical practice, the potential for the dose reduction of lead eyewear and a ceiling-suspended shield used to protect the eye lens of physicians working in interventional cardiology. To this end, for the lead eyewear, the dose reduction factors were derived to correct the readings from a dosimeter used routinely outside the glasses. Four types of lead eyewear with attached loose thermoluminescent dosimeters and EYE-D dosimeters were worn by physicians in two clinical centres, for two-month periods, during coronary angiography (CA), percutaneous coronary intervention (PCI), and pacemaker procedures. In order to analyse, separately, how a ceiling-suspended lead screen absorbs the scattered radiation, a series of measurements was carried out during single CA/PCI procedures performed with and without the protection. The lead eyewear may reduce the doses to the eye closest to the x-ray tube by a factor between 1.1 and 3.4, depending on its model and the physician's position. The effectiveness of the eyewear may, however, vary-even for the same model and physician-almost twofold between different working periods. The ceiling-suspended shield decreases the doses in clinical practice by a factor of 2.3. The annual eye lens doses without the eyewear estimated from routine measurements are high-above or close to the new eye lens dose limit established by the recent EU Basic Safety Standards, even though the ceiling-suspended shield was used. Therefore, to comply with the new dose limit that is set in the Directive, protection of the eyes of physicians with high workloads might require the use of both the eyewear and the ceiling-suspended shield.
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Affiliation(s)
- J Domienik
- Nofer Institute of Occupational Medicine, Radiation Protection Department, Lodz, Poland
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23
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Buczek A, Makowski M, Jewgiński M, Latajka R, Kupka T, Broda MA. Toward engineering efficient peptidomimetics. Screening conformational landscape of two modified dehydroaminoacids. Biopolymers 2016; 101:28-40. [PMID: 23606332 DOI: 10.1002/bip.22264] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 02/15/2013] [Accepted: 04/12/2013] [Indexed: 11/11/2022]
Abstract
Effective peptidomimetics should posses structural rigidity and appropriate interaction pattern leading to potential spatial and electronic matching to the target receptor site. Rational design of such small bioactive molecules could push chemical synthesis and molecular modeling toward faster progress in medicinal chemistry. Conformational properties of N-t-butoxycarbonyl-glycine-(E/Z)-dehydrophenylalanine N',N'-dimethylamides (Boc-Gly-(E/Z)-ΔPhe-NMe2 ) in chloroform were studied by NMR and IR spectroscopy. The experimental findings were supported by extensive calculations at DFT(B3LYP, M06-2X) and MP2 levels of theory and the β-turn tendency for both isomers of the studied dipeptide were determined in vacuum and in solution. The theoretical data and experimental IR results were used as an additional information for the NMR-based determination of the detailed solution conformations of the peptides. The obtained results reveal that N-methylation of C-terminal amide group changes dramatically the conformational properties of studied dehydropeptides. Theoretical conformational analysis reveals that the tendency to adopt β-turn conformations is much weaker for the N-methylated Z isomer (Boc-Gly-(Z)-ΔPhe-NMe2 ), both in vacuum and in polar environment. On the contrary, N-methylated E isomer (Boc-Gly-(E)-ΔPhe-NMe2 ) can easily adopt β-turn conformation, but the backbone torsion angles (φ1, ψ1, φ2, ψ2) are off the limits for common β-turn types.
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Affiliation(s)
- Aneta Buczek
- Department of Physical Chemistry and Molecular Modeling, Faculty of Chemistry, University of Opole, Oleska 48, 45-052, Opole, Poland
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Makowski M. Meine Forschungsgruppe – ein Erfahrungsbericht. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Nörenberg D, Ebersberger H, Walter T, Ockert B, Knobloch G, Diederichs G, Hamm B, Makowski M. Diagnose der Tendinitis calcarea der Rotatorenmanschette mittels suszeptibilitätsgewichteter MRT-Bildgebung. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Makowski M, Lenartowicz P, Oszywa B, Jewgiński M, Pawełczak M, Kafarski P. Synthesis of dehydrodipeptide esters and their evaluation as inhibitors of cathepsin C. Med Chem Res 2015; 24:3157-3165. [PMID: 26190908 PMCID: PMC4500854 DOI: 10.1007/s00044-015-1366-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 10/07/2014] [Accepted: 02/27/2015] [Indexed: 12/02/2022]
Abstract
The procedures for the synthesis of esters of dehydropeptides containing C-terminal (Z)-dehydrophenylalanine and dehydroalanine have been elaborated. These esters appeared to be moderate or weak inhibitors of cathepsin C, with some of them exhibiting slow-binding behavior. As shown by molecular modeling, they are rather bound at the surface of the enzyme and are not submersed in its binding cavities.
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Affiliation(s)
- Maciej Makowski
- />Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
| | - Paweł Lenartowicz
- />Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
| | - Bartosz Oszywa
- />Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
| | - Michał Jewgiński
- />Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | | | - Paweł Kafarski
- />Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
- />Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
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Lenartowicz P, Makowski M, Zarychta B, Ejsmont K. Crystal structure of N-(tert-but-oxy-carbon-yl)glycyl-(Z)-β-bromo-dehydro-alanine methyl ester [Boc-Gly-(β-Br)((Z))ΔAla-OMe]. Acta Crystallogr Sect E Struct Rep Online 2014; 70:596-8. [PMID: 25553002 PMCID: PMC4257433 DOI: 10.1107/s1600536814025677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 11/07/2014] [Accepted: 11/24/2014] [Indexed: 11/10/2022]
Abstract
The title compound, C11H17BrN2O5, is a de-hydro-amino acid with a C=C bond between the α- and β-C atoms. The amino acid residues are linked trans to each other and there are no strong intra-molecular hydrogen bonds. The torsion angles indicate a non-helical conformation of the mol-ecule. The dipeptide folding is influenced by an inter-molecular N-H⋯O hydrogen bond and also minimizes steric repulsion. In the crystal, mol-ecules are linked by strong N-H⋯O hydrogen bonds, generating (001) sheets. The sheets are linked by weak C-H⋯O and C-H⋯Br bonds and short Br⋯Br [3.4149 (3) Å] inter-actions.
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Affiliation(s)
- Paweł Lenartowicz
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Maciej Makowski
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Bartosz Zarychta
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Krzysztof Ejsmont
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
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Lenartowicz P, Makowski M, Zarychta B, Ejsmont K. Crystal structure of N-(tert-but-oxy-carbon-yl)phenyl-alanylde-hydro-alanine isopropyl ester (Boc-Phe-ΔAla-OiPr). Acta Crystallogr Sect E Struct Rep Online 2014; 70:599-602. [PMID: 25553003 PMCID: PMC4257372 DOI: 10.1107/s1600536814025197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 11/03/2014] [Accepted: 11/17/2014] [Indexed: 11/29/2022]
Abstract
In the crystal structure of the dehydrodipeptide (Boc-Phe-ΔAla-OiPr), the molecule has a trans configuration of the N-methylamide group. Its geometry is different from saturated peptides but is in excellent agreement with other dehydroalanine compounds. In the crystal, an N—H⋯O hydrogen bond links the molecules in a herringbone packing arrangement. In the title compound, the dehydrodipeptide (Boc–Phe–ΔAla–OiPr, C20H28N2O5), the molecule has a trans conformation of the N-methylamide group. The geometry of the dehydroalanine moiety is to some extent different from those usually found in simple peptides, indicating conjugation between the H2C=C group and the peptide bond. The bond angles around dehydroalanine have unusually high values due to the steric hindrance, the same interaction influencing the slight distortion from planarity of the dehydroalanine. The molecule is stabilized by intramolecular interactions between the isopropyl group and the N atoms of the peptide main chain. In the crystal, an N—H⋯O hydrogen bond links the molecules into ribbons, giving a herringbone head-to-head packing arrangement extending along the [100] direction. In the stacks, the molecules are linked by weak C—H⋯O hydrogen-bonding associations.
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Affiliation(s)
- Paweł Lenartowicz
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Maciej Makowski
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Bartosz Zarychta
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Krzysztof Ejsmont
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
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Makowski M, Makowski MR, Wiethoff AJ, Ebersberger HU, David O, Cesati R, Botnar RM. In vivo Charakterisierung von abdominalen Aortenaneurysmen mit einer elastinspezifischen molekularen MR-Sonde. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Jewgiński M, Krzciuk-Gula J, Makowski M, Latajka R, Kafarski P. Conformation of dehydropentapeptides containing four achiral amino acid residues - controlling the role of L-valine. Beilstein J Org Chem 2014; 10:660-6. [PMID: 24778717 PMCID: PMC3999861 DOI: 10.3762/bjoc.10.58] [Citation(s) in RCA: 7] [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: 11/25/2013] [Accepted: 02/05/2014] [Indexed: 12/01/2022] Open
Abstract
Structural studies of pentapeptides containing an achiral block, built from two dehydroamino acid residues (ΔZPhe and ΔAla) and two glycines, as well as one chiral L-Val residue were performed using NMR spectroscopy. The key role of the L-Val residue in the generation of the secondary structure of peptides is discussed. The obtained results suggest that the strongest influence on the conformation of peptides arises from a valine residue inserted at the C-terminal position. The most ordered conformation was found for peptide Boc-Gly-ΔAla-Gly-ΔZPhe-Val-OMe (3), which adopts a right-handed helical conformation.
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Affiliation(s)
- Michał Jewgiński
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Joanna Krzciuk-Gula
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Maciej Makowski
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Rafał Latajka
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Paweł Kafarski
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
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Suszek J, Siemion AM, Błocki N, Makowski M, Czerwiński A, Bomba J, Kowalczyk A, Ducin I, Kakarenko K, Pałka N, Zagrajek P, Kowalski M, Czerwińska E, Jastrzebski C, Świtkowski K, Coutaz JL, Kolodziejczyk A, Sypek M. High order kinoforms as a broadband achromatic diffractive optics for terahertz beams. Opt Express 2014; 22:3137-3144. [PMID: 24663604 DOI: 10.1364/oe.22.003137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We discuss thin optical structures that allow chromatic aberrations to be avoided in the THz domain. The paper contains the theoretical considerations, computer modeling and experimental evaluation of the high order kinoform diffractive elements in the THz range. According to the obtained results application of the high order kinoforms enables broadband operation in the THz range.
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Jaremko M, Jaremko L, Mazur A, Makowski M, Lisowski M. Enhanced β-turn conformational stability of tripeptides containing ΔPhe in cis over trans configuration. Amino Acids 2013; 45:865-75. [PMID: 23812673 DOI: 10.1007/s00726-013-1534-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 06/07/2013] [Indexed: 11/28/2022]
Abstract
Conformations of three pairs of dehydropeptides with the opposite configuration of the ΔPhe residue, Boc-Gly-Δ(Z/E)Phe-Phe-p-NA (Z- p -NA and E- p -NA), Boc-Gly-Δ(Z/E)Phe-Phe-OMe (Z-OMe and E-OMe), and Boc-Gly-Δ(Z/E)Phe-Phe-OH (Z-OH and E-OH) were compared on the basis of CD and NMR studies in MeOH, TFE, and DMSO. The CD results were used as the additional input data for the NMR-based calculations of the detailed solution conformations of the peptides. It was found that Z- p -NA, E- p -NA, Z-OMe, and Z-OH adopt the β-turn conformations and E-OMe and E-OH are unordered. There are two overlapping type III β-turns in Z- p -NA, type II' β-turn in E- p -NA, and type II β-turn in Z-OMe and Z-OH. The results obtained indicate that in the case of methyl esters and peptides with a free carboxyl group, Δ(Z)Phe is a much stronger inducer of ordered conformations than Δ(E)Phe. It was also found that temperature coefficients of the amide protons are not reliable indicators of intramolecular hydrogen bonds donors in small peptides.
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Affiliation(s)
- Mariusz Jaremko
- Department of NMR-based Structural Biology, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077, Göttingen, Germany,
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Oszywa B, Makowski M, Pawełczak M. Purification and partial characterization of aminopeptidase from barley (Hordeum vulgare L.) seeds. Plant Physiol Biochem 2013; 65:75-80. [PMID: 23434924 DOI: 10.1016/j.plaphy.2013.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 01/28/2013] [Indexed: 06/01/2023]
Abstract
Aminopeptidases (EC 3.4.11) are proteolytic enzymes, which hydrolyze one amino acid from N-terminus of peptidic substrates. Inhibitors of plant aminopeptidases can find an application in agriculture as herbicides. Isolation and partial characterization of aminopeptidase from barley (Hordeum vulgare L.) seeds has been described. The enzyme was purified to molecular homogeneity using a six-step purification procedure (precipitation with (NH4)2SO4, followed by chromatography on Sephadex G-25, DEAE-Sepharose, Sephacryl HR 300, Macro-Prep Q and Phenyl-Sepharose HP columns). The enzyme was purified 365-fold with recovery above 18%. The molecular weight of the purified enzyme was determined by SDS-PAGE and gel filtration as 58 kDa, and was found to be a monomer. Its pH and temperature optima were 7.5 and 52 °C, respectively. The enzyme behaves as standard leucine aminopeptidase by preferring bulky amino acids at the N-terminus, with phenylalanine being of choice.
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Affiliation(s)
- Bartosz Oszywa
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland.
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Brzuszkiewicz A, Makowski M, Lisowski M, Lis E, Otręba M, Lis T. Two phosphonodehydrotripeptides: Boc0–Gly1–Δ(Z)Phe2–α-Abu3PO3Me2and Boc0–Gly1–Δ(Z)Phe2–α-Nva3PO3Et2. Acta Crystallogr C 2013; 69:277-81. [DOI: 10.1107/s0108270113002539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 01/24/2013] [Indexed: 11/10/2022] Open
Abstract
The present paper reports the crystal structures of two short phosphonotripeptides (one in two crystal forms) containing one ΔPhe (dehydrophenylalanine) residue, namely dimethyl (3-{[tert-butoxycarbonylglycyl-α,β-(Z)-dehydrophenylalanyl]amino}propyl)phosphonate, Boc0–Gly1–Δ(Z)Phe2–α-Abu3PO3Me2, C21H32N3O7P, (I), and diethyl (4-{[tert-butoxycarbonylglycyl-α,β-(Z)-dehydrophenylalanyl]amino}butyl)phosphonate, Boc0–Gly1–Δ(Z)Phe2–α-Nva3PO3Et2, as the propan-2-ol monosolvate 0.122-hydrate, C24H38N3O7P·C3H8O·0.122H2O, (II), and the ethanol monosolvate 0.076-hydrate, C24H38N3O7P·C2H6O·0.076H2O, (III). The crystals of (II) and (III) are isomorphous but differ in the type of solvent. The phosphono group is linked directly to the last Cαatom in the main chain for all three peptides. All the amino acids aretranslinked in the main chains. The crystal structures exhibit no intramolecular hydrogen bonds and are stabilized by intermolecular hydrogen bonds only.
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Czerwiński A, Kakarenko K, Sypek M, Makowski M, Ducin I, Suszek J, Kolodziejczyk A, Bomba J. Modeling of the optical system illuminated by quasi-monochromatic spatially incoherent light: new numerical approach. Opt Lett 2012; 37:4723-4725. [PMID: 23164892 DOI: 10.1364/ol.37.004723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This Letter presents a new method for modeling of complex optical setups illuminated by quasi monochromatic spatially incoherent light. The algorithm provides better performance and quality than other modeling methods both for isoplanatic and nonisoplanatic systems. The algorithm maintains energy relations, image orientation, and magnification of the system. Computer modeling and experimental results are presented.
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Affiliation(s)
- A Czerwiński
- Warsaw University of Technology, Faculty of Physics, Warsaw PL00662, Poland.
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37
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Jogiya R, Makowski M, Phinikaridou A, Chiribiri A, Zarinabad N, Kozerke S, Botnar R, Nagel E, Plein S. 118 First pass vasodilator-stress myocardial perfusion CMR in mice on a clinical whole-body 3 Tesla scanner: validation against microspheres. Heart 2012. [DOI: 10.1136/heartjnl-2012-301877b.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Malek K, Makowski M, Królikowska A, Bukowska J. Comparative studies on IR, Raman, and surface enhanced Raman scattering spectroscopy of dipeptides containing ΔAla and ΔPhe. J Phys Chem B 2012; 116:1414-25. [PMID: 22208201 DOI: 10.1021/jp208586j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three dipeptides containing dehydroresidues (ΔAla, Δ((Z))Phe, and Δ((E))Phe) were examined by IR, Raman, and surface-enhanced Raman techniques for the first time. The effect of the size and isomer type of the β-substituent in the dehydroresidue on the conformational structure of the peptide was evaluated by using the analysis of IR and Raman bands. Additionally, SERS spectroscopy provided insight into the adsorption mechanism of these species on the metal surface. SERS spectra were recorded at alkaline pH on the silver sol using visible light excitation. The dehydroresidues studied here strongly influenced the SERS profile of the peptides. The most pronounced SERS signal for all dipeptides was assigned to the symmetric stretching vibration of the carboxylate ions. This indicates that the dehydropeptides studied here primarily adsorb via the deprotonated carboxylic group. Additionally, the enhanced SERS bands in the range 1550-1650 cm(-1) show differences in contribution of the dehydroresidue to the adsorption mechanism of the studied peptides.
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Affiliation(s)
- Kamilla Malek
- Faculty of Chemistry, Jagiellonian Chemistry, Ingardena 3, 30-060 Krakow, Poland.
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Lisowski M, Jaremko Ł, Jaremko M, Mazur A, Latajka R, Makowski M. Effect of the ΔPhe residue configuration on a didehydropeptides conformation: A combined CD and NMR study. Biopolymers 2010; 93:1055-64. [DOI: 10.1002/bip.21522] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Ptak A, Makowski M, Cichomski M. Characterization of nanoscale adhesion between a fluoroalkyl silane monolayer and a silicon AFM tip. Complex character of the interaction potential. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.02.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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41
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Makowski M, Lisowski M, Maciag A, Wiktor M, Szlachcic A, Lis T. Two pentadehydropeptides with different configurations of the DeltaPhe residues. Acta Crystallogr C 2010; 66:o119-23. [PMID: 20203407 DOI: 10.1107/s0108270110003094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Accepted: 01/25/2010] [Indexed: 11/10/2022] Open
Abstract
Comparison of the crystal structures of two pentadehydropeptides containing DeltaPhe residues, namely (Z,Z)-N-(tert-butoxycarbonyl)glycyl-alpha,beta-phenylalanylglycyl-alpha,beta-phenylalanylglycine (or Boc(0)-Gly(1)-Delta(Z)Phe(2)-Gly(3)-Delta(Z)Phe(4)-Gly(5)-OH) methanol solvate, C(29)H(33)N(5)O(8) x CH(4)O, (I), and (E,E)-N-(tert-butoxycarbonyl)glycyl-alpha,beta-phenylalanylglycyl-alpha,beta-phenylalanylglycine (or Boc(0)-Gly(1)-Delta(E)Phe(2)-Gly(3)-Delta(E)Phe(4)-Gly(5)-OH), C(29)H(33)N(5)O(8), (II), indicates that the Delta(Z)Phe residue is a more effective inducer of folded structures than the Delta(E)Phe residue. The values of the torsion angles phi and psi show the presence of two type-III' beta-turns at the Delta(Z)Phe residues and one type-II beta-turn at the Delta(E)Phe residue. All amino acids are linked trans to each other in both peptides. Beta-turns present in the peptides are stabilized by intramolecular 4-->1 hydrogen bonds. Molecules in both structures form two-dimensional hydrogen-bond networks parallel to the (100) plane.
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Affiliation(s)
- Maciej Makowski
- Institute of Chemistry, University of Opole, 48 Oleska Street, 45-052 Opole, Poland
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Latajka R, Jewginski M, Makowski M, Krezel A. Conformational studies of hexapeptides containing two dehydroamino acid residues in positions 3 and 5 in peptide chain. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.06.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Latajka R, Jewginski M, Makowski M, Pawełczak M, Huber T, Sewald N, Kafarski P. Pentapeptides containing two dehydrophenylalanine residues--synthesis, structural studies and evaluation of their activity towards cathepsin C. J Pept Sci 2008; 14:1084-95. [PMID: 18523964 DOI: 10.1002/psc.1045] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Synthesis, structural and biological studies of pentapeptides containing two DeltaPhe residues (Z and E isomers) in position 2 and 4 in peptide chain were performed. All the investigated peptides adopted bent conformation and majority of them could exist as two different conformers in solution. Only pentapeptides, containing free N-termini appeared to act as weak inhibitors of cathepsin C with the slow-binding, competitive mechanism of inhibition, free acids being bound slightly better than their methyl esters. Results of molecular modeling suggested significant difference between peptides, depending of the type of amino acid residue in position 5 in peptide chain. Dehydropeptides containing Gly residue in this position may act as competitive slow-reacting substrates and therefore exhibit inhibitory-like properties.
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Affiliation(s)
- R Latajka
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
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Lisowski M, Latajka R, Picur B, Lis T, Bryndal I, Rospenk M, Makowski M, Kafarski P. Combined effect of the ΔPhe or ΔAla residue and thep-nitroanilide group on a didehydropeptides conformation. Biopolymers 2008; 89:220-34. [DOI: 10.1002/bip.20897] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Latajka R, Jewginski M, Makowski M, Krezel A, Paluch S. Conformational studies of hexapeptides containing two dehydroamino acid residues in positions 2 and 5 in peptide chain. Biopolymers 2008; 89:691-9. [DOI: 10.1002/bip.20994] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zazakowny P, Makowski M, Zomerska K, Pawlikowski M. The vibronic effects in the 11B2 and 21A1 states of 1,3-dicyanomethylene croconate dianion: The resonance Raman study in terms of CASSCF and DFT methods. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.09.062] [Citation(s) in RCA: 2] [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: 11/25/2022]
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Kołodziej B, Grech E, Schilf W, Kamieński B, Makowski M, Rozwadowski Z, Dziembowska T. Anomeric and tautomeric equilibria in d-2-glucosamine Schiff bases. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2007.07.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ejsmont K, Gajda R, Makowski M. Conformation of tert-butoxycarbonylglycyl-dehydroalanyl-glycine methyl ester in the crystalline state and calculated in the gas phase. Acta Crystallogr C 2007; 63:o80-3. [PMID: 17284812 DOI: 10.1107/s0108270106052590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2006] [Accepted: 12/05/2006] [Indexed: 11/10/2022] Open
Affiliation(s)
- Krzysztof Ejsmont
- Institute of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland.
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50
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Nowis D, Legat M, Grzela T, Niderla J, Wilczek E, Wilczyñski GM, Głodkowska E, Mrówka P, Issat T, Dulak J, Józkowicz A, Waś H, Adamek M, Wrzosek A, Nazarewski S, Makowski M, Stokłosa T, Jakóbisiak M, Gołąb J. Heme oxygenase-1 protects tumor cells against photodynamic therapy-mediated cytotoxicity. Oncogene 2006; 25:3365-74. [PMID: 16462769 PMCID: PMC1538962 DOI: 10.1038/sj.onc.1209378] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Photodynamic therapy is a promising antitumor treatment modality approved for the management of both early and advanced tumors. The mechanisms of its antitumor action include generation of singlet oxygen and reactive oxygen species that directly damage tumor cells and tumor vasculature. A number of mechanisms seem to be involved in the protective responses to PDT that include activation of transcription factors, heat shock proteins, antioxidant enzymes and antiapoptotic pathways. Elucidation of these mechanisms might result in the design of more effective combination strategies to improve the antitumor efficacy of PDT. Using DNA microarray analysis to identify stress-related genes induced by Photofrin-mediated PDT in colon adenocarcinoma C-26 cells, we observed a marked induction of heme oxygenase-1 (HO-1). Induction of HO-1 with hemin or stable transfection of C-26 with a plasmid vector encoding HO-1 increased resistance of tumor cells to PDT-mediated cytotoxicity. On the other hand, zinc (II) protoporphyrin IX, an HO-1 inhibitor, markedly augmented PDT-mediated cytotoxicity towards C-26 and human ovarian carcinoma MDAH2774 cells. Neither bilirubin, biliverdin nor carbon monoxide, direct products of HO-1 catalysed heme degradation, was responsible for cytoprotection. Importantly, desferrioxamine, a potent iron chelator significantly potentiated cytotoxic effects of PDT. Altogether our results indicate that HO-1 is involved in an important protective mechanism against PDT-mediated phototoxicity and administration of HO-1 inhibitors might be an effective way to potentiate antitumor effectiveness of PDT.
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Affiliation(s)
- D Nowis
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - M Legat
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - T Grzela
- Department of Histology and Embryology, Center of Biostructure Research; The Medical University of Warsaw, Warsaw, Poland
| | - J Niderla
- Department of Histology and Embryology, Center of Biostructure Research; The Medical University of Warsaw, Warsaw, Poland
| | - E Wilczek
- Department of Pathology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - GM Wilczyñski
- Department of Pathology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - E Głodkowska
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - P Mrówka
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - T Issat
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - J Dulak
- Department of Medical Biotechnology, Faculty of Biotechnology, Jagiellonian University, Krakow, Poland
| | - A Józkowicz
- Department of Medical Biotechnology, Faculty of Biotechnology, Jagiellonian University, Krakow, Poland
| | - H Waś
- Department of Medical Biotechnology, Faculty of Biotechnology, Jagiellonian University, Krakow, Poland
| | - M Adamek
- Center for Laser Diagnostics and Therapy, Chair and Clinic of Internal Diseases and Physical Medicine, Silesian Medical University, Bytom, Poland
| | - A Wrzosek
- Department of Muscle Biochemistry, M Nencki Institute of Experimental Biology, Warsaw, Poland
| | - S Nazarewski
- Department of General and Vascular Surgery and Transplantation, The Medical University of Warsaw, Warsaw, Poland
| | - M Makowski
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - T Stokłosa
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - M Jakóbisiak
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
| | - J Gołąb
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Warsaw, Poland
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