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Merkel K, Szöllősi D, Horváth I, Jezsó B, Baranyai Z, Szigeti K, Varga Z, Hegedüs I, Padmanabhan P, Gulyás B, Bergmann R, Máthé D. Radiolabeling of Platelets with 99mTc-HYNIC-Duramycin for In Vivo Imaging Studies. Int J Mol Sci 2023; 24:17119. [PMID: 38069441 PMCID: PMC10707319 DOI: 10.3390/ijms242317119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Following the in vivo biodistribution of platelets can contribute to a better understanding of their physiological and pathological roles, and nuclear imaging methods, such as single photon emission tomography (SPECT), provide an excellent method for that. SPECT imaging needs stable labeling of the platelets with a radioisotope. In this study, we report a new method to label platelets with 99mTc, the most frequently used isotope for SPECT in clinical applications. The proposed radiolabeling procedure uses a membrane-binding peptide, duramycin. Our results show that duramycin does not cause significant platelet activation, and radiolabeling can be carried out with a procedure utilizing a simple labeling step followed by a size-exclusion chromatography-based purification step. The in vivo application of the radiolabeled human platelets in mice yielded quantitative biodistribution images of the spleen and liver and no accumulation in the lungs. The performed small-animal SPECT/CT in vivo imaging investigations revealed good in vivo stability of the labeling, which paves the way for further applications of 99mTc-labeled-Duramycin in platelet imaging.
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Affiliation(s)
- Keresztély Merkel
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
| | - Dávid Szöllősi
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
| | - Bálint Jezsó
- Biological Nanochemistry Research Group, Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, 1117 Budapest, Hungary
| | - Zsolt Baranyai
- Clinic of Surgery, Transplantation and Gastroenterology, Semmelweis University, 1085 Budapest, Hungary
- Duna Medical Center, 1092 Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 1094 Budapest, Hungary
| | - Zoltán Varga
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
- Biological Nanochemistry Research Group, Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, 1117 Budapest, Hungary
| | - Imre Hegedüs
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 1094 Budapest, Hungary
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore
| | - Balázs Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore
| | - Ralf Bergmann
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 1094 Budapest, Hungary
- CROmed Translational Research Centers, 1094 Budapest, Hungary
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2
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Hegedűs N, Forgách L, Kiss B, Varga Z, Jezsó B, Horváth I, Kovács N, Hajdrik P, Padmanabhan P, Gulyás B, Szigeti K, Máthé D. Correction: Synthesis and preclinical application of a Prussian blue-based dual fluorescent and magnetic contrast agent (CA). PLoS One 2023; 18:e0295460. [PMID: 38033129 PMCID: PMC10688837 DOI: 10.1371/journal.pone.0295460] [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: 12/02/2023] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0264554.].
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3
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Ilosvai ÁM, Forgách L, Kovács N, Heydari F, Szigeti K, Máthé D, Kristály F, Daróczi L, Kaleta Z, Viskolcz B, Nagy M, Vanyorek L. Development of Polymer-Encapsulated, Amine-Functionalized Zinc Ferrite Nanoparticles as MRI Contrast Agents. Int J Mol Sci 2023; 24:16203. [PMID: 38003394 PMCID: PMC10671131 DOI: 10.3390/ijms242216203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
The need for stable and well-defined magnetic nanoparticles is constantly increasing in biomedical applications; however, their preparation remains challenging. We used two different solvothermal methods (12 h reflux and a 4 min microwave, MW) to synthesize amine-functionalized zinc ferrite (ZnFe2O4-NH2) superparamagnetic nanoparticles. The morphological features of the two ferrite samples were the same, but the average particle size was slightly larger in the case of MW activation: 47 ± 14 nm (Refl.) vs. 63 ± 20 nm (MW). Phase identification measurements confirmed the exclusive presence of zinc ferrite with virtually the same magnetic properties. The Refl. samples had a zeta potential of -23.8 ± 4.4 mV, in contrast to the +7.6 ± 6.8 mV measured for the MW sample. To overcome stability problems in the colloidal phase, the ferrite nanoparticles were embedded in polyvinylpyrrolidone and could be easily redispersed in water. Two PVP-coated zinc ferrite samples were administered (1 mg/mL ZnFe2O4) in X BalbC mice and were compared as contrast agents in magnetic resonance imaging (MRI). After determining the r1/r2 ratio, the samples were compared to other commercially available contrast agents. Consistent with other SPION nanoparticles, our sample exhibits a concentrated presence in the hepatic region of the animals, with comparable biodistribution and pharmacokinetics suspected. Moreover, a small dose of 1.3 mg/body weight kg was found to be sufficient for effective imaging. It should also be noted that no toxic side effects were observed, making ZnFe2O4-NH2 advantageous for pharmaceutical formulations.
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Affiliation(s)
- Ágnes M. Ilosvai
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary; (Á.M.I.); (B.V.); (M.N.)
- Higher Education and Industrial Cooperation Centre, University of Miskolc, 3515 Miskolc, Hungary
| | - László Forgách
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (N.K.); (F.H.); (K.S.); (D.M.)
| | - Noémi Kovács
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (N.K.); (F.H.); (K.S.); (D.M.)
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 1094 Budapest, Hungary
| | - Fatemeh Heydari
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (N.K.); (F.H.); (K.S.); (D.M.)
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (N.K.); (F.H.); (K.S.); (D.M.)
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (N.K.); (F.H.); (K.S.); (D.M.)
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 1094 Budapest, Hungary
| | - Ferenc Kristály
- Institute of Mineralogy and Geology, University of Miskolc, 3515 Miskolc, Hungary;
| | - Lajos Daróczi
- Department of Solid State Physics, University of Debrecen, P.O. Box 2, 4010 Debrecen, Hungary;
| | - Zoltán Kaleta
- Pro-Research Laboratory, Progressio Engineering Bureau Ltd., 8000 Szekesfehervar, Hungary;
- Institute of Organic Chemistry, Semmelweis University, 1092 Budapest, Hungary
| | - Béla Viskolcz
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary; (Á.M.I.); (B.V.); (M.N.)
- Higher Education and Industrial Cooperation Centre, University of Miskolc, 3515 Miskolc, Hungary
| | - Miklós Nagy
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary; (Á.M.I.); (B.V.); (M.N.)
| | - László Vanyorek
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary; (Á.M.I.); (B.V.); (M.N.)
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4
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Szöllősi D, Hajdrik P, Tordai H, Horváth I, Veres DS, Gillich B, Shailaja KD, Smeller L, Bergmann R, Bachmann M, Mihály J, Gaál A, Jezsó B, Barátki B, Kövesdi D, Bősze S, Szabó I, Felföldi T, Oszwald E, Padmanabhan P, Gulyás BZ, Hamdani N, Máthé D, Varga Z, Szigeti K. Molecular imaging of bacterial outer membrane vesicles based on bacterial surface display. Sci Rep 2023; 13:18752. [PMID: 37907509 PMCID: PMC10618197 DOI: 10.1038/s41598-023-45628-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/21/2023] [Indexed: 11/02/2023] Open
Abstract
The important roles of bacterial outer membrane vesicles (OMVs) in various diseases and their emergence as a promising platform for vaccine development and targeted drug delivery necessitates the development of imaging techniques suitable for quantifying their biodistribution with high precision. To address this requirement, we aimed to develop an OMV specific radiolabeling technique for positron emission tomography (PET). A novel bacterial strain (E. coli BL21(DE3) ΔnlpI, ΔlpxM) was created for efficient OMV production, and OMVs were characterized using various methods. SpyCatcher was anchored to the OMV outer membrane using autotransporter-based surface display systems. Synthetic SpyTag-NODAGA conjugates were tested for OMV surface binding and 64Cu labeling efficiency. The final labeling protocol shows a radiochemical purity of 100% with a ~ 29% radiolabeling efficiency and excellent serum stability. The in vivo biodistribution of OMVs labeled with 64Cu was determined in mice using PET/MRI imaging which revealed that the biodistribution of radiolabeled OMVs in mice is characteristic of previously reported data with the highest organ uptakes corresponding to the liver and spleen 3, 6, and 12 h following intravenous administration. This novel method can serve as a basis for a general OMV radiolabeling scheme and could be used in vaccine- and drug-carrier development based on bioengineered OMVs.
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Affiliation(s)
- Dávid Szöllősi
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Polett Hajdrik
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Hedvig Tordai
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Bernadett Gillich
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Kanni Das Shailaja
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - László Smeller
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Ralf Bergmann
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
- Institute for Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 400 Bautzner Landstraße, 01328, Dresden, Germany
| | - Michael Bachmann
- Institute for Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 400 Bautzner Landstraße, 01328, Dresden, Germany
| | - Judith Mihály
- Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, 2 Magyar Tudósok Körútja, Budapest, 1117, Hungary
| | - Anikó Gaál
- Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, 2 Magyar Tudósok Körútja, Budapest, 1117, Hungary
| | - Bálint Jezsó
- Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, 2 Magyar Tudósok Körútja, Budapest, 1117, Hungary
- Doctoral School of Biology and Institute of Biology, Eötvös Loránd University, 1/C Pázmány Péter Sétány, Budapest, 1117, Hungary
| | - Balázs Barátki
- Department of Immunology, ELTE Eötvös Loránd University, 1/C Pázmány Péter Sétány, Budapest, 1117, Hungary
| | - Dorottya Kövesdi
- Department of Immunology, ELTE Eötvös Loránd University, 1/C Pázmány Péter Sétány, Budapest, 1117, Hungary
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), 1/A Pázmány Péter Sétány, Budapest, 1117, Hungary
| | - Szilvia Bősze
- ELKH-ELTE Research Group of Peptide Chemistry, Eötvös L. Research Network, Eötvös L. University, 1/A Pázmány Péter Sétány, Budapest, 1117, Hungary
| | - Ildikó Szabó
- ELKH-ELTE Research Group of Peptide Chemistry, Eötvös L. Research Network, Eötvös L. University, 1/A Pázmány Péter Sétány, Budapest, 1117, Hungary
| | - Tamás Felföldi
- Department of Microbiology, ELTE Eötvös Loránd University, 1/C Pázmány Péter Sétány, Budapest, 1117, Hungary
- Centre for Ecological Research, Institute of Aquatic Ecology, 29 Karolina Road, Budapest, 1113, Hungary
| | - Erzsébet Oszwald
- Department of Anatomy, Histology, and Embryology, Semmelweis University, 58 Tűzoltó Street, Budapest, 1094, Hungary
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore, 30823, Singapore
- Cognitive Neuroimaging Centre, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
| | - Balázs Zoltán Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore, 30823, Singapore
- Cognitive Neuroimaging Centre, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
| | - Nazha Hamdani
- Department of Cellular and Translational Physiology, Institute of Physiology, Ruhr University Bochum, 44801, Bochum, Germany
- HCEMM-Cardiovascular Research Group, Department of Pharmacology and Pharmacotherapy, University of Budapest, Budapest, 1089, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
- CROmed Translational Research Centers, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 37-47 Tűzoltó Street, Budapest, 1094, Hungary
| | - Zoltán Varga
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary
- Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, 2 Magyar Tudósok Körútja, Budapest, 1117, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 37-47 Tűzoltó Street, Budapest, 1094, Hungary.
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5
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Peschke JC, Bergmann R, Mehnert M, Gonzalez Soto KE, Loureiro LR, Mitwasi N, Kegler A, Altmann H, Wobus M, Máthé D, Szigeti K, Feldmann A, Bornhäuser M, Bachmann M, Fasslrinner F, Arndt C. FLT3-directed UniCAR T-cell therapy of acute myeloid leukaemia. Br J Haematol 2023; 202:1137-1150. [PMID: 37460273 DOI: 10.1111/bjh.18971] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 09/12/2023]
Abstract
Adaptor chimeric antigen receptor (CAR) T-cell therapy offers solutions for improved safety and antigen escape, which represent main obstacles for the clinical translation of CAR T-cell therapy in myeloid malignancies. The adaptor CAR T-cell platform 'UniCAR' is currently under early clinical investigation. Recently, the first proof of concept of a well-tolerated, rapidly switchable, CD123-directed UniCAR T-cell product treating patients with acute myeloid leukaemia (AML) was reported. Relapsed and refractory AML is prone to high plasticity under therapy pressure targeting one single tumour antigen. Thus, targeting of multiple tumour antigens seems to be required to achieve durable anti-tumour responses, underlining the need to further design alternative AML-specific target modules (TM) for the UniCAR platform. We here present the preclinical development of a novel FMS-like tyrosine kinase 3 (FLT3)-directed UniCAR T-cell therapy, which is highly effective for in vitro killing of both AML cell lines and primary AML samples. Furthermore, we show in vivo functionality in a murine xenograft model. PET analyses further demonstrate a short serum half-life of FLT3 TMs, which will enable a rapid on/off switch of UniCAR T cells. Overall, the presented preclinical data encourage the further development and clinical translation of FLT3-specific UniCAR T cells for the therapy of AML.
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Affiliation(s)
- J C Peschke
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
- Mildred Scheel Early Career Center, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT/UCC): German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Partner Site, Dresden, Germany
| | - R Bergmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - M Mehnert
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
- Mildred Scheel Early Career Center, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - K E Gonzalez Soto
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - L R Loureiro
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - N Mitwasi
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - A Kegler
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - H Altmann
- National Center for Tumor Diseases Dresden (NCT/UCC): German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Partner Site, Dresden, Germany
- Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Wobus
- Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - D Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Hungarian Centre of Excellence for Molecular Medicine, In Vivo Imaging Advanced Core Facility, Szeged, Hungary
| | - K Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - A Feldmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT/UCC): German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Partner Site, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Bornhäuser
- National Center for Tumor Diseases Dresden (NCT/UCC): German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Partner Site, Dresden, Germany
- Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- School of Cancer and Pharmaceutical Science, King's College, London, UK
| | - M Bachmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT/UCC): German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Partner Site, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - F Fasslrinner
- Mildred Scheel Early Career Center, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
- Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - C Arndt
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
- Mildred Scheel Early Career Center, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
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6
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Kegler A, Drewitz L, Arndt C, Daglar C, Rodrigues Loureiro L, Mitwasi N, Neuber C, González Soto KE, Bartsch T, Baraban L, Ziehr H, Heine M, Nieter A, Moreira-Soto A, Kühne A, Drexler JF, Seliger B, Laube M, Máthé D, Pályi B, Hajdrik P, Forgách L, Kis Z, Szigeti K, Bergmann R, Feldmann A, Bachmann M. A novel ACE2 decoy for both neutralization of SARS-CoV-2 variants and killing of infected cells. Front Immunol 2023; 14:1204543. [PMID: 37383226 PMCID: PMC10293748 DOI: 10.3389/fimmu.2023.1204543] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/17/2023] [Indexed: 06/30/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) led to millions of infections and deaths worldwide. As this virus evolves rapidly, there is a high need for treatment options that can win the race against new emerging variants of concern. Here, we describe a novel immunotherapeutic drug based on the SARS-CoV-2 entry receptor ACE2 and provide experimental evidence that it cannot only be used for (i) neutralization of SARS-CoV-2 in vitro and in SARS-CoV-2-infected animal models but also for (ii) clearance of virus-infected cells. For the latter purpose, we equipped the ACE2 decoy with an epitope tag. Thereby, we converted it to an adapter molecule, which we successfully applied in the modular platforms UniMAB and UniCAR for retargeting of either unmodified or universal chimeric antigen receptor-modified immune effector cells. Our results pave the way for a clinical application of this novel ACE2 decoy, which will clearly improve COVID-19 treatment.
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Affiliation(s)
- Alexandra Kegler
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Laura Drewitz
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Claudia Arndt
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Mildred Scheel Early Career Center, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Cansu Daglar
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Liliana Rodrigues Loureiro
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Nicola Mitwasi
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Christin Neuber
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Karla Elizabeth González Soto
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Tabea Bartsch
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Larysa Baraban
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Holger Ziehr
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Braunschweig, Germany
| | - Markus Heine
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Braunschweig, Germany
| | - Annabel Nieter
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Braunschweig, Germany
| | - Andres Moreira-Soto
- Institute of Virology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Arne Kühne
- Institute of Virology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Barbara Seliger
- Medical Faculty, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- Institute of Translational Immunology, Medical High School, Brandenburg an der Havel, Germany
| | - Markus Laube
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
- Hungarian Centre of Excellence for Molecular Medicine, In Vivo Imaging Advanced Core Facility, Szeged, Hungary
- CROmed Translational Research Ltd., Budapest, Hungary
| | - Bernadett Pályi
- National Biosafety Laboratory, Division of Microbiological Reference Laboratories, National Public Health Center, Budapest, Hungary
| | - Polett Hajdrik
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - László Forgách
- Semmelweis University School of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Zoltán Kis
- National Biosafety Laboratory, Division of Microbiological Reference Laboratories, National Public Health Center, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Ralf Bergmann
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Anja Feldmann
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT), German Cancer Research Center (DKFZ), Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michael Bachmann
- Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT), German Cancer Research Center (DKFZ), Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
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7
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Sótonyi P, Berczeli M, Gyánó M, Legeza P, Mihály Z, Csobay-Novák C, Pataki Á, Juhász V, Góg I, Szigeti K, Osváth S, Kiss JP, Nemes B. Radiation Exposure Reduction by Digital Variance Angiography in Lower Limb Angiography: A Randomized Controlled Trial. J Cardiovasc Dev Dis 2023; 10:jcdd10050198. [PMID: 37233165 DOI: 10.3390/jcdd10050198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND digital variance angiography (DVA) provides higher image quality than digital subtraction angiography (DSA). This study investigates whether the quality reserve of DVA allows for radiation dose reduction during lower limb angiography (LLA), and compares the performance of two DVA algorithms. METHODS this prospective block-randomized controlled study enrolled 114 peripheral arterial disease patients undergoing LLA into normal dose (ND, 1.2 µGy/frame, n = 57) or low-dose (LD, 0.36 µGy/frame, n = 57) groups. DSA images were generated in both groups, DVA1 and DVA2 images were generated in the LD group. Total and DSA-related radiation dose area product (DAP) were analyzed. Image quality was assessed on a 5-grade Likert scale by six readers. RESULTS the total and DSA-related DAP were reduced by 38% and 61% in the LD group. The overall visual evaluation scores (median (IQR)) of LD-DSA (3.50 (1.17)) were significantly lower than the ND-DSA scores (3.83 (1.00), p < 0.001). There was no difference between ND-DSA and LD-DVA1 (3.83 (1.17)), but the LD-DVA2 scores were significantly higher (4.00 (0.83), p < 0.01). The difference between LD-DVA2 and LD-DVA1 was also significant (p < 0.001). CONCLUSIONS DVA significantly reduced the total and DSA-related radiation dose in LLA, without affecting the image quality. LD-DVA2 images outperformed LD-DVA1, therefore DVA2 might be especially beneficial in lower limb interventions.
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Affiliation(s)
- Péter Sótonyi
- Department of Vascular and Endovascular Surgery, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
| | - Márton Berczeli
- Department of Vascular and Endovascular Surgery, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
| | - Marcell Gyánó
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
- Department of Interventional Radiology, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
| | - Péter Legeza
- Department of Vascular and Endovascular Surgery, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
| | - Zsuzsanna Mihály
- Department of Vascular and Endovascular Surgery, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
| | - Csaba Csobay-Novák
- Department of Interventional Radiology, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
| | - Ákos Pataki
- Department of Interventional Radiology, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
| | - Viktória Juhász
- Department of Vascular and Endovascular Surgery, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
| | - István Góg
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
- Department of Vascular Surgery, Hungarian Defence Forces Medical Centre, Róbert Károly körút 44, 1134 Budapest, Hungary
| | - Krisztián Szigeti
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó u. 37-47, 1094 Budapest, Hungary
| | - Szabolcs Osváth
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó u. 37-47, 1094 Budapest, Hungary
| | - János P Kiss
- Kinepict Health Ltd., Szilágyi Erzsébet Fasor 31, 1027 Budapest, Hungary
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó u. 37-47, 1094 Budapest, Hungary
| | - Balázs Nemes
- Department of Interventional Radiology, Heart and Vascular Center, Semmelweis University, Városmajor utca 68, 1122 Budapest, Hungary
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8
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Hegedűs N, Forgách L, Kiss B, Varga Z, Jezsó B, Horváth I, Kovács N, Hajdrik P, Padmanabhan P, Gulyás B, Szigeti K, Máthé D. Synthesis and preclinical application of a Prussian blue-based dual fluorescent and magnetic contrast agent (CA). PLoS One 2022; 17:e0264554. [PMID: 35857783 PMCID: PMC9299340 DOI: 10.1371/journal.pone.0264554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 02/12/2022] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to develop and characterize a Prussian Blue based biocompatible and chemically stable T1 magnetic resonance imaging (MRI) contrast agent with near infrared (NIR) optical contrast for preclinical application. The physical properties of the Prussian blue nanoparticles (PBNPs) (iron (II); iron (III);octadecacyanide) were characterized with dynamic light scattering (DLS), zeta potential measurement, atomic force microscopy (AFM), and transmission electron microscopy (TEM). In vitro contrast enhancement properties of PBNPs were determined by MRI. In vivo T1-weighted contrast of the prepared PBNPs was investigated by MRI and optical imaging modality after intravenous administration into NMRI-Foxn1 nu/nu mice. The biodistribution studies showed the presence of PBNPs predominantly in the cardiovascular system. Briefly, in this paper we show a novel approach for the synthesis of PBNPs with enhanced iron content for T1 MRI contrast. This newly synthetized PBNP platform could lead to a new diagnostic agent, replacing the currently used Gadolinium based substances.
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Affiliation(s)
- Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - László Forgách
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Bálint Kiss
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Zoltán Varga
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Science, Budapest, Hungary
| | - Bálint Jezsó
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Science, Budapest, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Noémi Kovács
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Polett Hajdrik
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Cognitive Neuroimaging Centre, Nanyang Technological University, Singapore, Singapore
| | - Balázs Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Cognitive Neuroimaging Centre, Nanyang Technological University, Singapore, Singapore
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- CROmed Translational Research Centers, Budapest, Hungary
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), Budapest, Hungary
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9
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Gara E, Zucchelli E, Nemes A, Jakus Z, Ajtay K, Kemecsei É, Kiszler G, Hegedűs N, Szigeti K, Földes I, Árvai K, Kósa J, Kolev K, Komorowicz E, Padmanabhan P, Maurovich-Horvat P, Dósa E, Várady G, Pólos M, Hartyánszky I, Harding SE, Merkely B, Máthé D, Szabó G, Radovits T, Földes G. 3D culturing of human pluripotent stem cells-derived endothelial cells for vascular regeneration. Theranostics 2022; 12:4684-4702. [PMID: 35832092 PMCID: PMC9254250 DOI: 10.7150/thno.69938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/18/2022] [Indexed: 11/27/2022] Open
Abstract
Rationale: Human induced pluripotent stem cell-derived endothelial cells can be candidates for engineering therapeutic vascular grafts. Methods: Here, we studied the role of three-dimensional culture on their characteristics and function both in vitro and in vivo. Results: We found that differentiated hPSC-EC can re-populate decellularized biomatrices; they remain viable, undergo maturation and arterial/venous specification. Human PSC-EC develop antifibrotic, vasoactive and anti-inflammatory properties during recellularization. In vivo, a robust increase in perfusion was detected at the engraftment sites after subcutaneous implantation of an hPSC-EC-laden hydrogel in rats. Histology confirmed survival and formation of capillary-like structures, suggesting the incorporation of hPSC-EC into host microvasculature. In a canine model, hiPSC-EC-seeded onto decellularised vascular segments were functional as aortic grafts. Similarly, we showed the retention and maturation of hiPSC-EC and dynamic remodelling of the vessel wall with good maintenance of vascular patency. Conclusions: A combination of hPSC-EC and biomatrices may be a promising approach to repair ischemic tissues.
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Affiliation(s)
- Edit Gara
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - Eleonora Zucchelli
- National Heart and Lung Institute, Imperial College London, W12 0NN, United Kingdom
| | - Annamária Nemes
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - Zoltán Jakus
- Department of Physiology, Semmelweis University, Budapest, H1094, Hungary
- MTA-SE “Lendület” Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, H1094, Hungary
| | - Kitti Ajtay
- Department of Physiology, Semmelweis University, Budapest, H1094, Hungary
- MTA-SE “Lendület” Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, H1094, Hungary
| | - Éva Kemecsei
- Department of Physiology, Semmelweis University, Budapest, H1094, Hungary
- MTA-SE “Lendület” Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, H1094, Hungary
| | | | - Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Nanobiotechnology & In vivo Imaging Center, Semmelweis University, H1094, Budapest, Hungary and In vivo Imaging Advanced Core Facility, Hungarian Centre of Excellence for Molecular Medicine. www.hcemm.eu, Szeged, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Nanobiotechnology & In vivo Imaging Center, Semmelweis University, H1094, Budapest, Hungary and In vivo Imaging Advanced Core Facility, Hungarian Centre of Excellence for Molecular Medicine. www.hcemm.eu, Szeged, Hungary
| | - Iván Földes
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - Kristóf Árvai
- Department of Internal Medicine and Oncology, Semmelweis University; PentaCore Laboratory, Budapest, H1083, Hungary
| | - János Kósa
- Department of Internal Medicine and Oncology, Semmelweis University; PentaCore Laboratory, Budapest, H1083, Hungary
| | - Kraszimir Kolev
- Department of Biochemistry, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H1094, Hungary
| | - Erzsébet Komorowicz
- Department of Biochemistry, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H1094, Hungary
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Imperial College - Nanyang Technological University, 636921, Singapore
| | | | - Edit Dósa
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - György Várady
- Research Centre for Natural Sciences, Budapest, H1117, Hungary
| | - Miklós Pólos
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - István Hartyánszky
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - Sian E. Harding
- National Heart and Lung Institute, Imperial College London, W12 0NN, United Kingdom
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Nanobiotechnology & In vivo Imaging Center, Semmelweis University, H1094, Budapest, Hungary and In vivo Imaging Advanced Core Facility, Hungarian Centre of Excellence for Molecular Medicine. www.hcemm.eu, Szeged, Hungary
| | - Gábor Szabó
- Experimentelle Herzchirurgie, Ruprecht-Karls Universität, Heidelberg, 69120, Germany
- Department of Cardiac Surgery, University of Halle, Halle (Saale), 06108, Germany
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
| | - Gábor Földes
- Heart and Vascular Center, Semmelweis University, Budapest, H1122, Hungary
- National Heart and Lung Institute, Imperial College London, W12 0NN, United Kingdom
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10
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Veres T, Voniatis C, Molnár K, Nesztor D, Fehér D, Ferencz A, Gresits I, Thuróczy G, Márkus BG, Simon F, Nemes NM, García-Hernández M, Reiniger L, Horváth I, Máthé D, Szigeti K, Tombácz E, Jedlovszky-Hajdu A. An Implantable Magneto-Responsive Poly(aspartamide) Based Electrospun Scaffold for Hyperthermia Treatment. Nanomaterials (Basel) 2022; 12:nano12091476. [PMID: 35564185 PMCID: PMC9101327 DOI: 10.3390/nano12091476] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/15/2022] [Accepted: 04/22/2022] [Indexed: 02/06/2023]
Abstract
When exposed to an alternating magnetic field, superparamagnetic nanoparticles can elicit the required hyperthermic effect while also being excellent magnetic resonance imaging (MRI) contrast agents. Their main drawback is that they diffuse out of the area of interest in one or two days, thus preventing a continuous application during the typical several-cycle multi-week treatment. To solve this issue, our aim was to synthesise an implantable, biodegradable membrane infused with magnetite that enabled long-term treatment while having adequate MRI contrast and hyperthermic capabilities. To immobilise the nanoparticles inside the scaffold, they were synthesised inside hydrogel fibres. First, polysuccinimide (PSI) fibres were produced by electrospinning and crosslinked, and then, magnetitc iron oxide nanoparticles (MIONs) were synthesised inside and in-between the fibres of the hydrogel membranes with the well-known co-precipitation method. The attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) investigation proved the success of the chemical synthesis and the presence of iron oxide, and the superconducting quantum interference device (SQUID) study revealed their superparamagnetic property. The magnetic hyperthermia efficiency of the samples was significant. The given alternating current (AC) magnetic field could induce a temperature rise of 5 °C (from 37 °C to 42 °C) in less than 2 min even for five quick heat-cool cycles or for five consecutive days without considerable heat generation loss in the samples. Short-term (1 day and 7 day) biocompatibility, biodegradability and MRI contrast capability were investigated in vivo on Wistar rats. The results showed excellent MRI contrast and minimal acute inflammation.
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Affiliation(s)
- Tamás Veres
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
| | - Constantinos Voniatis
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
- Department of Surgery, Transplantation and Gastroenterology, Semmelweis University, 1082 Budapest, Hungary
| | - Kristóf Molnár
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
| | - Dániel Nesztor
- Department of Food Engineering, University of Szeged, 6725 Szeged, Hungary; (D.N.); (E.T.)
| | - Daniella Fehér
- Heart and Vascular Centre, Department of Surgical Research and Techniques, Semmelweis University, 1122 Budapest, Hungary; (D.F.); (A.F.)
| | - Andrea Ferencz
- Heart and Vascular Centre, Department of Surgical Research and Techniques, Semmelweis University, 1122 Budapest, Hungary; (D.F.); (A.F.)
| | - Iván Gresits
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
| | - György Thuróczy
- NRIRR “Frédéric Joliot-Curie” National Research Institute for Radiobiology and Radiohygiene, 1221 Budapest, Hungary;
| | - Bence Gábor Márkus
- Stavropoulos Center for Complex Quantum Matter, Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA;
- Institute of Physics, Budapest University of Technology and Economics, 1521 Budapest, Hungary;
- Wigner Research Centre for Physics Economics, 1121 Budapest, Hungary
| | - Ferenc Simon
- Institute of Physics, Budapest University of Technology and Economics, 1521 Budapest, Hungary;
- Wigner Research Centre for Physics Economics, 1121 Budapest, Hungary
| | - Norbert Marcell Nemes
- Grupo de Física de Materiales Complejos (GFMC), Departamento de Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.M.N.); (M.G.-H.)
| | - Mar García-Hernández
- Grupo de Física de Materiales Complejos (GFMC), Departamento de Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.M.N.); (M.G.-H.)
| | - Lilla Reiniger
- Department of Pathology and Experimental Cancer Research, Semmelweis University, 1085 Budapest, Hungary;
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
- Hungarian Center of Excellence for Molecular Medicine (HCEMM), In Vivo Imaging Advanced Core Facility, Semmelweis University Site, 1094 Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
| | - Etelka Tombácz
- Department of Food Engineering, University of Szeged, 6725 Szeged, Hungary; (D.N.); (E.T.)
- Soós Ernő Water Technology Research and Development Center, University of Pannonia, 8800 Nagykanizsa, Hungary
| | - Angela Jedlovszky-Hajdu
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
- Correspondence:
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11
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Császár E, Lénárt N, Cserép C, Környei Z, Fekete R, Pósfai B, Balázsfi D, Hangya B, Schwarcz AD, Szabadits E, Szöllősi D, Szigeti K, Máthé D, West BL, Sviatkó K, Brás AR, Mariani JC, Kliewer A, Lenkei Z, Hricisák L, Benyó Z, Baranyi M, Sperlágh B, Menyhárt Á, Farkas E, Dénes Á. Microglia modulate blood flow, neurovascular coupling, and hypoperfusion via purinergic actions. J Exp Med 2022; 219:213035. [PMID: 35201268 PMCID: PMC8932534 DOI: 10.1084/jem.20211071] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [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: 05/17/2021] [Revised: 10/28/2021] [Accepted: 01/03/2022] [Indexed: 12/13/2022] Open
Abstract
Microglia, the main immunocompetent cells of the brain, regulate neuronal function, but their contribution to cerebral blood flow (CBF) regulation has remained elusive. Here, we identify microglia as important modulators of CBF both under physiological conditions and during hypoperfusion. Microglia establish direct, dynamic purinergic contacts with cells in the neurovascular unit that shape CBF in both mice and humans. Surprisingly, the absence of microglia or blockade of microglial P2Y12 receptor (P2Y12R) substantially impairs neurovascular coupling in mice, which is reiterated by chemogenetically induced microglial dysfunction associated with impaired ATP sensitivity. Hypercapnia induces rapid microglial calcium changes, P2Y12R-mediated formation of perivascular phylopodia, and microglial adenosine production, while depletion of microglia reduces brain pH and impairs hypercapnia-induced vasodilation. Microglial actions modulate vascular cyclic GMP levels but are partially independent of nitric oxide. Finally, microglial dysfunction markedly impairs P2Y12R-mediated cerebrovascular adaptation to common carotid artery occlusion resulting in hypoperfusion. Thus, our data reveal a previously unrecognized role for microglia in CBF regulation, with broad implications for common neurological diseases.
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Affiliation(s)
- Eszter Császár
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary.,János Szentágothai Doctoral School of Neurosciences, Schools of PhD Studies, Semmelweis University, Budapest, Hungary
| | - Nikolett Lénárt
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Csaba Cserép
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Zsuzsanna Környei
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Rebeka Fekete
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Balázs Pósfai
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary.,János Szentágothai Doctoral School of Neurosciences, Schools of PhD Studies, Semmelweis University, Budapest, Hungary
| | - Diána Balázsfi
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Balázs Hangya
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Anett D Schwarcz
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Eszter Szabadits
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Dávid Szöllősi
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Domokos Máthé
- Hungarian Centre of Excellence for Molecular Medicine, Szeged, Hungary
| | | | - Katalin Sviatkó
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Ana Rita Brás
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary.,János Szentágothai Doctoral School of Neurosciences, Schools of PhD Studies, Semmelweis University, Budapest, Hungary
| | - Jean-Charles Mariani
- Institute of Psychiatry and Neurosciences of Paris, INSERM U1266, Université de Paris, Paris, France
| | - Andrea Kliewer
- Institute of Psychiatry and Neurosciences of Paris, INSERM U1266, Université de Paris, Paris, France
| | - Zsolt Lenkei
- Institute of Psychiatry and Neurosciences of Paris, INSERM U1266, Université de Paris, Paris, France
| | - László Hricisák
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Mária Baranyi
- Laboratory of Molecular Pharmacology, Institute of Experimental Medicine, Budapest, Hungary
| | - Beáta Sperlágh
- Laboratory of Molecular Pharmacology, Institute of Experimental Medicine, Budapest, Hungary
| | - Ákos Menyhárt
- Hungarian Centre of Excellence for Molecular Medicine, University of Szeged, Cerebral Blood Flow and Metabolism Research Group, Szeged, Hungary.,Department of Medical Physics and Informatics, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Eszter Farkas
- Hungarian Centre of Excellence for Molecular Medicine, University of Szeged, Cerebral Blood Flow and Metabolism Research Group, Szeged, Hungary.,Department of Cell Biology and Molecular Medicine, Albert Szent-Györgyi Medical School, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Ádám Dénes
- "Momentum" Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
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12
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Hajdrik P, Pályi B, Kis Z, Kovács N, Veres DS, Szigeti K, Budán F, Hegedüs I, Kovács T, Bergmann R, Máthé D. In Vitro Determination of Inhibitory Effects of Humic Substances Complexing Zn and Se on SARS-CoV-2 Virus Replication. Foods 2022; 11:694. [PMID: 35267328 PMCID: PMC8909382 DOI: 10.3390/foods11050694] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 02/06/2023] Open
Abstract
(1) Background: Humic substances are well-known human nutritional supplement materials and they play an important performance-enhancing role as animal feed additives. For decades, ingredients of humic substances have been proven to carry potent antiviral effects against different viruses. (2) Methods: Here, the antiviral activity of a humic substance containing ascorbic acid, Se- and Zn2+ ions intended as a nutritional supplement material was investigated against SARS-CoV-2 virus B1.1.7 Variant of Concern ("Alpha Variant") in a VeroE6 cell line. (3) Results: This combination has a significant in vitro antiviral effect at a very low concentration range of its intended active ingredients. (4) Conclusions: Even picomolar concentration ranges of humic substances, Vitamin C and Zn/Se ions in the given composition, were enough to achieve 50% viral replication inhibition in the applied SARS-CoV-2 virus inhibition test.
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Affiliation(s)
- Polett Hajdrik
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
| | - Bernadett Pályi
- National Biosafety Laboratory, National Public Health Center, Albert Flórián út 2-6, H-1097 Budapest, Hungary; (B.P.); (Z.K.)
| | - Zoltán Kis
- National Biosafety Laboratory, National Public Health Center, Albert Flórián út 2-6, H-1097 Budapest, Hungary; (B.P.); (Z.K.)
- Department of Microbiology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary
| | - Noémi Kovács
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
- CROmed Translational Research Ltd., Tűzoltó u. 37-47, H-1094 Budapest, Hungary
| | - Dániel Sándor Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
| | - Ferenc Budán
- Institute of Transdisciplinary Discoveries, Medical School, University of Pécs, Ifjúság útja 11, H-7624 Pécs, Hungary;
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary
| | - Imre Hegedüs
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
| | - Tibor Kovács
- Institute of Radiochemistry and Radioecology, University of Pannonia, Egyetem u. 10., H-8200 Veszprem, Hungary;
| | - Ralf Bergmann
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
- Helmholtz-Zentrum Dresden Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary; (P.H.); (N.K.); (D.S.V.); (K.S.); (I.H.); (R.B.)
- CROmed Translational Research Ltd., Tűzoltó u. 37-47, H-1094 Budapest, Hungary
- Hungarian Centre of Excellence for Molecular Medicine, In Vivo Imaging Advanced Core Facility, Semmelweis University Site, Római Blvd. 21, H-6723 Szeged, Hungary
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13
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Forgách L, Kiss-Hegedus N, Horváth I, Szigeti K, Máthé D. Prussian blue nanoparticles: an advanced platform for multimodal imaging. Biophys J 2022. [DOI: 10.1016/j.bpj.2021.11.643] [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: 11/02/2022] Open
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14
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Mohamed Asik R, Suganthy N, Aarifa MA, Kumar A, Szigeti K, Mathe D, Gulyás B, Archunan G, Padmanabhan P. Alzheimer's Disease: A Molecular View of β-Amyloid Induced Morbific Events. Biomedicines 2021; 9:biomedicines9091126. [PMID: 34572312 PMCID: PMC8468668 DOI: 10.3390/biomedicines9091126] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/22/2021] [Accepted: 08/27/2021] [Indexed: 12/26/2022] Open
Abstract
Amyloid-β (Aβ) is a dynamic peptide of Alzheimer’s disease (AD) which accelerates the disease progression. At the cell membrane and cell compartments, the amyloid precursor protein (APP) undergoes amyloidogenic cleavage by β- and γ-secretases and engenders the Aβ. In addition, externally produced Aβ gets inside the cells by receptors mediated internalization. An elevated amount of Aβ yields spontaneous aggregation which causes organelles impairment. Aβ stimulates the hyperphosphorylation of tau protein via acceleration by several kinases. Aβ travels to the mitochondria and interacts with its functional complexes, which impairs the mitochondrial function leading to the activation of apoptotic signaling cascade. Aβ disrupts the Ca2+ and protein homeostasis of the endoplasmic reticulum (ER) and Golgi complex (GC) that promotes the organelle stress and inhibits its stress recovery machinery such as unfolded protein response (UPR) and ER-associated degradation (ERAD). At lysosome, Aβ precedes autophagy dysfunction upon interacting with autophagy molecules. Interestingly, Aβ act as a transcription regulator as well as inhibits telomerase activity. Both Aβ and p-tau interaction with neuronal and glial receptors elevate the inflammatory molecules and persuade inflammation. Here, we have expounded the Aβ mediated events in the cells and its cosmopolitan role on neurodegeneration, and the current clinical status of anti-amyloid therapy.
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Affiliation(s)
- Rajmohamed Mohamed Asik
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore; (R.M.A.); (B.G.)
- Cognitive Neuroimaging Centre, 59 Nanyang Drive, Nanyang Technological University, Singapore 636921, Singapore
- Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India;
| | - Natarajan Suganthy
- Department of Nanoscience and Technology, Alagappa University, Karaikudi 630003, Tamil Nadu, India;
| | - Mohamed Asik Aarifa
- Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India;
| | - Arvind Kumar
- Centre for Cellular and Molecular Biology, Hyderabad 500007, Telangana, India;
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (K.S.); (D.M.)
- CROmed Translational Research Centers, 1094 Budapest, Hungary
| | - Domokos Mathe
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (K.S.); (D.M.)
- CROmed Translational Research Centers, 1094 Budapest, Hungary
- In Vivo Imaging Advanced Core Facility, Hungarian Center of Excellence for Molecular Medicine (HCEMM), 1094 Budapest, Hungary
| | - Balázs Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore; (R.M.A.); (B.G.)
- Cognitive Neuroimaging Centre, 59 Nanyang Drive, Nanyang Technological University, Singapore 636921, Singapore
- Department of Clinical Neuroscience, Karolinska Institute, 17176 Stockholm, Sweden
| | - Govindaraju Archunan
- Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India;
- Marudupandiyar College, Thanjavur 613403, Tamil Nadu, India
- Correspondence: (G.A.); (P.P.)
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore; (R.M.A.); (B.G.)
- Cognitive Neuroimaging Centre, 59 Nanyang Drive, Nanyang Technological University, Singapore 636921, Singapore
- Correspondence: (G.A.); (P.P.)
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15
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Keszthelyi S, Szöllösi D, Strobel L, Osváth S, Szigeti K, Pónya Z, Csóka Á, Donkó T. Novel, X-ray supported kinetic imaging of hidden-lifestyle arthropods. Insect Sci 2021; 28:281-284. [PMID: 31925889 DOI: 10.1111/1744-7917.12753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/22/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Affiliation(s)
- Sándor Keszthelyi
- Faculty of Agricultural and Environment Sciences, Department of Plant Production and Protection, Institute of Plant Science, Kaposvár University, Kaposvár, Hungary
| | | | | | | | | | - Zsolt Pónya
- Faculty of Agricultural and Environment Sciences, Department of Plant Production and Protection, Institute of Plant Science, Kaposvár University, Kaposvár, Hungary
| | - Ádám Csóka
- Medicopus Nonprofit Ltd., Kaposvár, Hungary
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16
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Óriás VI, Szöllősi D, Gyánó M, Veres DS, Nardai S, Csobay-Novák C, Nemes B, Kiss JP, Szigeti K, Osváth S, Sótonyi P, Ruzsa Z. Initial evidence of a 50% reduction of contrast media using digital variance angiography in endovascular carotid interventions. Eur J Radiol Open 2020; 7:100288. [PMID: 33294499 PMCID: PMC7683322 DOI: 10.1016/j.ejro.2020.100288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 12/29/2022] Open
Abstract
Digital Variance Angiography (DVA) is a novel medical image processing method. DVA provides better image quality than Digital Subtraction Angiography (DSA). The quality reserve of DVA allows the reduction of contrast agents in angiography.
Purpose In previous clinical studies Digital Variance Angiography (DVA) provided higher signal-to-noise ratio (SNR) and better image quality than Digital Subtraction Angiography (DSA). Our aim was to investigate whether this quality reserve of DVA provides an opportunity for the reduction of iodinated contrast media (ICM) in carotid X-ray angiography (CXA). Method Our prospective study enrolled 26 patients (67.0 ± 8.1 years) undergoing carotid percutaneous transluminal angioplasty. The SNR of DSA and DVA image pairs obtained by a standard (100 %, 6 mL ICM) or a low-dose (50 %, 3 mL ICM) protocol were compared. Visual evaluation of all images was performed by five specialists using a 5-grade rating scale. The quality of DSA100 and DVA50 videos was also compared. Results DVA provided more than two-fold SNR, the median SNRDVA/SNRDSA ratio was 2.06 (100 %) and 2.25 (50 %). In the visual evaluation, the DVA100 score (3.73 ± 0.06) was significantly higher than the DSA100 score (3.52 ± 0.07, Wilcoxon p < 0.001), and the DVA50 score (3.64 ± 0.13) was also significantly higher than the DSA50 score (3.01 ± 0.17, Wilcoxon p < 0.001). While the low-dose protocol significantly decreased the DSA score (Mann-Whitney p < 0.01, DSA100 vs DSA50), it had no effect on the DVA score (DVA100 vs DVA50). There was no statistical difference between the DSA100 and DVA50 scores. Evaluators preferred the diagnostic value of DVA50 to DSA100 videos in 61% of comparisons, the interrater agreement was 69 % (Fleiss’ kappa 0.35, p < 0.001) Conclusions Our data show that DVA allows a substantial (50 %) ICM reduction in CXA without affecting the quality and diagnostic value of angiograms.
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Affiliation(s)
- Viktor I Óriás
- Kinepict Health Ltd, 1026, Júlia u 11, Budapest, Hungary.,Bács-Kiskun County Hospital, 6000, Nyíri út 38, Kecskemét, Hungary.,The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
| | - Dávid Szöllősi
- Kinepict Health Ltd, 1026, Júlia u 11, Budapest, Hungary.,Department of Biophysics and Radiation Biology, Semmelweis University, 1094, Tűzoltó u 37-47, Budapest, Hungary
| | - Marcell Gyánó
- Kinepict Health Ltd, 1026, Júlia u 11, Budapest, Hungary.,The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
| | - Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094, Tűzoltó u 37-47, Budapest, Hungary
| | - Sándor Nardai
- The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
| | - Csaba Csobay-Novák
- The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
| | - Balázs Nemes
- The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
| | - János P Kiss
- Kinepict Health Ltd, 1026, Júlia u 11, Budapest, Hungary
| | - Krisztián Szigeti
- Kinepict Health Ltd, 1026, Júlia u 11, Budapest, Hungary.,Department of Biophysics and Radiation Biology, Semmelweis University, 1094, Tűzoltó u 37-47, Budapest, Hungary
| | - Szabolcs Osváth
- Kinepict Health Ltd, 1026, Júlia u 11, Budapest, Hungary.,Department of Biophysics and Radiation Biology, Semmelweis University, 1094, Tűzoltó u 37-47, Budapest, Hungary
| | - Péter Sótonyi
- The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
| | - Zoltán Ruzsa
- Bács-Kiskun County Hospital, 6000, Nyíri út 38, Kecskemét, Hungary.,The Heart and Vascular Center, Semmelweis University, 1122, Városmajor utca 68, Budapest, Hungary
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17
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Király B, Balázsfi D, Horváth I, Solari N, Sviatkó K, Lengyel K, Birtalan E, Babos M, Bagaméry G, Máthé D, Szigeti K, Hangya B. In vivo localization of chronically implanted electrodes and optic fibers in mice. Nat Commun 2020; 11:4686. [PMID: 32943633 PMCID: PMC7499215 DOI: 10.1038/s41467-020-18472-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 08/24/2020] [Indexed: 12/20/2022] Open
Abstract
Electrophysiology provides a direct readout of neuronal activity at a temporal precision only limited by the sampling rate. However, interrogating deep brain structures, implanting multiple targets or aiming at unusual angles still poses significant challenges for operators, and errors are only discovered by post-hoc histological reconstruction. Here, we propose a method combining the high-resolution information about bone landmarks provided by micro-CT scanning with the soft tissue contrast of the MRI, which allowed us to precisely localize electrodes and optic fibers in mice in vivo. This enables arbitrating the success of implantation directly after surgery with a precision comparable to gold standard histology. Adjustment of the recording depth with micro-drives or early termination of unsuccessful experiments saves many working hours, and fast 3-dimensional feedback helps surgeons avoid systematic errors. Increased aiming precision enables more precise targeting of small or deep brain nuclei and multiple targeting of specific cortical or hippocampal layers.
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Affiliation(s)
- Bálint Király
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Department of Biological Physics, Eötvös Loránd University, Budapest, Hungary
| | - Diána Balázsfi
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Nicola Solari
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Katalin Sviatkó
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
- János Szentágothai Doctoral School of Neurosciences, Semmelweis University, Budapest, Hungary
| | - Katalin Lengyel
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Eszter Birtalan
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary
| | - Magor Babos
- Mediso Medical Imaging Systems Ltd., Budapest, Hungary
| | | | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- CROmed Translational Research Centers, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Balázs Hangya
- Lendület Laboratory of Systems Neuroscience, Institute of Experimental Medicine, Budapest, Hungary.
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18
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Tőkési N, Kozák E, Fülöp K, Dedinszki D, Hegedűs N, Király B, Szigeti K, Ajtay K, Jakus Z, Zaworski J, Letavernier E, Pomozi V, Váradi A. Pyrophosphate therapy prevents trauma-induced calcification in the mouse model of neurogenic heterotopic ossification. J Cell Mol Med 2020; 24:11791-11799. [PMID: 32885586 PMCID: PMC7579705 DOI: 10.1111/jcmm.15793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/19/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022] Open
Abstract
Trauma‐induced calcification is the pathological consequence of complex injuries which often affect the central nervous system and other parts of the body simultaneously. We demonstrated by an animal model recapitulating the calcification of the above condition that adrenaline transmits the stress signal of brain injury to the calcifying tissues. We have also found that although the level of plasma pyrophosphate, the endogenous inhibitor of calcification, was normal in calcifying animals, it could not counteract the acute calcification. However, externally added pyrophosphate inhibited calcification even when it was administered after the complex injuries. Our finding suggests a potentially powerful clinical intervention of calcification triggered by polytrauma injuries which has no effective treatment.
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Affiliation(s)
- Natália Tőkési
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
| | - Eszter Kozák
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
| | - Krisztina Fülöp
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
| | - Dóra Dedinszki
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
| | - Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Bálint Király
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary.,Department of Cellular and Network Neurobiology, Institute of Experimental Medicine, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Kitti Ajtay
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Zoltán Jakus
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Jeremy Zaworski
- Sorbonne Université, UPMC Univ Paris 06, Paris, France.,INSERM, UMR S 1155, Paris, France
| | - Emmanuel Letavernier
- Sorbonne Université, UPMC Univ Paris 06, Paris, France.,INSERM, UMR S 1155, Paris, France
| | - Viola Pomozi
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
| | - András Váradi
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
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19
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Forgách L, Hegedűs N, Horváth I, Kiss B, Kovács N, Varga Z, Jakab G, Kovács T, Padmanabhan P, Szigeti K, Máthé D. Fluorescent, Prussian Blue-Based Biocompatible Nanoparticle System for Multimodal Imaging Contrast. Nanomaterials (Basel) 2020; 10:nano10091732. [PMID: 32878344 PMCID: PMC7557721 DOI: 10.3390/nano10091732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/21/2020] [Accepted: 08/27/2020] [Indexed: 02/06/2023]
Abstract
(1) Background. The main goal of this work was to develop a fluorescent dye-labelling technique for our previously described nanosized platform, citrate-coated Prussian blue (PB) nanoparticles (PBNPs). In addition, characteristics and stability of the PB nanoparticles labelled with fluorescent dyes were determined. (2) Methods. We adsorbed the fluorescent dyes Eosin Y and Rhodamine B and methylene blue (MB) to PB-nanoparticle systems. The physicochemical properties of these fluorescent dye-labeled PBNPs (iron(II);iron(III);octadecacyanide) were determined using atomic force microscopy, dynamic light scattering, zeta potential measurements, scanning- and transmission electron microscopy, X-ray diffraction, and Fourier-transformation infrared spectroscopy. A methylene-blue (MB) labelled, polyethylene-glycol stabilized PBNP platform was selected for further assessment of in vivo distribution and fluorescent imaging after intravenous administration in mice. (3) Results. The MB-labelled particles emitted a strong fluorescent signal at 662 nm. We found that the fluorescent light emission and steric stabilization made this PBNP-MB particle platform applicable for in vivo optical imaging. (4) Conclusion. We successfully produced a fluorescent and stable, Prussian blue-based nanosystem. The particles can be used as a platform for imaging contrast enhancement. In vivo stability and biodistribution studies revealed new aspects of the use of PBNPs.
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Affiliation(s)
- László Forgách
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
- Correspondence: (L.F.); (K.S.); (D.M.); Tel.: +36-1-459-1500 (ext. 60164) (L.F.); +36-1-459-1500 (ext. 60210) (D.M.)
| | - Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
| | - Bálint Kiss
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
| | - Noémi Kovács
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
| | - Zoltán Varga
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Géza Jakab
- Department of Pharmaceutics, Semmelweis University, 1085 Budapest, Hungary;
| | - Tibor Kovács
- Institute of Radiochemistry and Radioecology, University of Pannonia, 8200 Veszprém, Hungary;
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore;
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
- Correspondence: (L.F.); (K.S.); (D.M.); Tel.: +36-1-459-1500 (ext. 60164) (L.F.); +36-1-459-1500 (ext. 60210) (D.M.)
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary; (N.H.); (I.H.); (B.K.); (N.K.); (Z.V.)
- In Vivo Imaging Advanced Core Facility, Hungarian Centre of Excellence for Molecular Medicine, 6723 Szeged, Hungary
- CROmed Translational Research Centers, 1047 Budapest, Hungary
- Correspondence: (L.F.); (K.S.); (D.M.); Tel.: +36-1-459-1500 (ext. 60164) (L.F.); +36-1-459-1500 (ext. 60210) (D.M.)
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Loureiro LR, Feldmann A, Bergmann R, Koristka S, Berndt N, Máthé D, Hegedüs N, Szigeti K, Videira PA, Bachmann M, Arndt C. Extended half-life target module for sustainable UniCAR T-cell treatment of STn-expressing cancers. J Exp Clin Cancer Res 2020; 39:77. [PMID: 32370811 PMCID: PMC7201957 DOI: 10.1186/s13046-020-01572-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/15/2020] [Indexed: 12/11/2022]
Abstract
Background Adapter chimeric antigen receptor (CAR) approaches have emerged has promising strategies to increase clinical safety of CAR T-cell therapy. In the UniCAR system, the safety switch is controlled via a target module (TM) which is characterized by a small-size and short half-life. The rapid clearance of these TMs from the blood allows a quick steering and self-limiting safety switch of UniCAR T-cells by TM dosing. This is mainly important during onset of therapy when tumor burden and the risk for severe side effects are high. For long-term UniCAR therapy, the continuous infusion of TMs may not be an optimal setting for the patients. Thus, in later stages of treatment, single infusions of TMs with an increased half-life might play an important role in long-term surveillance and eradication of residual tumor cells. Given this, we aimed to develop and characterize a novel TM with extended half-life targeting the tumor-associated carbohydrate sialyl-Tn (STn). Methods The extended half-life TM is composed of the STn-specific single-chain variable fragment (scFv) and the UniCAR epitope, fused to the hinge region and Fc domain of a human immunoglobulin 4 (IgG4) antibody. Specific binding and functionality of the αSTn-IgG4 TM as well as pharmacokinetic features were assessed using in vitro and in vivo assays and compared to the already established small-sized αSTn TM. Results The novel αSTn-IgG4 TM efficiently activates and redirects UniCAR T-cells to STn-expressing tumors in a target-specific and TM-dependent manner, thereby promoting the secretion of proinflammatory cytokines and tumor cell lysis in vitro and in experimental mice. Moreover, PET-imaging results demonstrate the specific enrichment of the αSTn-IgG4 TM at the tumor site, while presenting a prolonged serum half-life compared to the short-lived αSTn TM. Conclusion In a clinical setting, the combination of TMs with different formats and pharmacokinetics may represent a promising strategy for retargeting of UniCAR T-cells in a flexible, individualized and safe manner at particular stages of therapy. Furthermore, as these molecules can be used for in vivo imaging, they pose as attractive candidates for theranostic approaches.
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Affiliation(s)
- Liliana R Loureiro
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany.,National Center for Tumor Diseases (NCT), Dresden, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Anja Feldmann
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany
| | - Ralf Bergmann
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany.,Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Stefanie Koristka
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany
| | - Nicole Berndt
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Nikolett Hegedüs
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Paula A Videira
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Michael Bachmann
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany. .,National Center for Tumor Diseases (NCT), Dresden, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany. .,German Cancer Consortium (DKTK), partner site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Tumor Immunology, University CancerCenter (UCC), University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany.
| | - Claudia Arndt
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, 01328, Dresden, Germany
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Pénzes M, Túrós D, Máthé D, Szigeti K, Hegedűs N, Rauscher AÁ, Tóth P, Ivic I, Padmanabhan P, Pál G, Dobolyi Á, Gyimesi M, Málnási-Csizmadia A. Direct myosin-2 inhibition enhances cerebral perfusion resulting in functional improvement after ischemic stroke. Theranostics 2020; 10:5341-5356. [PMID: 32373216 PMCID: PMC7196296 DOI: 10.7150/thno.42077] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/03/2020] [Indexed: 12/29/2022] Open
Abstract
Acute ischemic stroke treatment faces an unresolved obstacle as capillary reperfusion remains insufficient after thrombolysis and thrombectomy causing neuronal damage and poor prognosis. Hypoxia-induced capillary constriction is mediated by actomyosin contraction in precapillary smooth muscle cells (SMCs) therefore smooth muscle myosin-2 could be an ideal target with potentially high impact on reperfusion of capillaries. Methods: The myosin-2 inhibitor para-aminoblebbistatin (AmBleb) was tested on isolated human and rat arterioles to assess the effect of AmBleb on vasodilatation. Transient middle cerebral artery occlusion (MCAO) was performed on 38 male Wistar rats followed by local administration of AmBleb into the ischemic brain area. Development of brain edema and changes in cerebrovascular blood flow were assessed using MRI and SPECT. We also tested the neurological deficit scores and locomotor asymmetry of the animals for 3 weeks after the MCAO operation. Results: Our results demonstrate that AmBleb could achieve full relaxation of isolated cerebral arterioles. In living animals AmBleb recovered cerebral blood flow in 32 out of the 65 affected functional brain areas in MCAO operated rats, whereas only 8 out of the 67 affected areas were recovered in the control animals. Animals treated with AmBleb also showed significantly improved general and focal deficit scores in neurological functional tests and showed significantly ameliorated locomotor asymmetry. Conclusion: Direct inhibition of smooth muscle myosin by AmBleb in pre-capillary SMCs significantly contribute to the improvement of cerebral blood reperfusion and brain functions suggesting that smooth muscle myosin inhibition may have promising potential in stroke therapies as a follow-up treatment of physical or chemical removal of the occluding thrombus.
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Bors L, Tóth K, Tóth EZ, Bajza Á, Csorba A, Szigeti K, Máthé D, Perlaki G, Orsi G, Tóth GK, Erdő F. Corrigendum to "Age-dependent changes at the blood-brain barrier. A comparative structural and functional study in young adult and middle aged rats" [Brain Res. Bull. 139C (2018) 269-277]. Brain Res Bull 2019; 155:211-212. [PMID: 31776050 DOI: 10.1016/j.brainresbull.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Luca Bors
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Práter u. 50a, H-1083, Budapest, Hungary
| | - Kinga Tóth
- Hungarian Academyof Sciences, Institute of Cognitive Neuroscience and Psychology, Magyar tudósok körútja 2, H-1117, Budapest, Hungary
| | - Estilla Zsófia Tóth
- Hungarian Academyof Sciences, Institute of Cognitive Neuroscience and Psychology, Magyar tudósok körútja 2, H-1117, Budapest, Hungary
| | - Ágnes Bajza
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Práter u. 50a, H-1083, Budapest, Hungary
| | - Attila Csorba
- University of Szeged, Faculty of Pharmacy, Deparment of Pharmacognosy, Eötvös u. 6, H-6720, Szeged, Hungary
| | - Krisztián Szigeti
- Semmelweis University, Faculty of Medicine, Department of Biophysics and Radiation Biology, Tűzoltó u. 37-47, H-1094, Budapest, Hungary
| | - Domokos Máthé
- Semmelweis University, Faculty of Medicine, Department of Biophysics and Radiation Biology, Tűzoltó u. 37-47, H-1094, Budapest, Hungary; CROmed Translational Research Ltd., Budapest, Hungary
| | - Gábor Perlaki
- MTA-PTE Clinical Neuroscience MR Research Group, Ret u. 2, H-7623, Pecs, Hungary; Department of Neurosurgery, University of Pecs, Medical School, Ret u. 2, H-7623, Pecs, Hungary
| | - Gergely Orsi
- MTA-PTE Clinical Neuroscience MR Research Group, Ret u. 2, H-7623, Pecs, Hungary; Department of Neurosurgery, University of Pecs, Medical School, Ret u. 2, H-7623, Pecs, Hungary
| | - Gábor K Tóth
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Dóm tér 8, H-6720, Szeged, Hungary
| | - Franciska Erdő
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Práter u. 50a, H-1083, Budapest, Hungary.
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Veres DS, Máthé D, Hegedűs N, Horváth I, Kiss FJ, Taba G, Tóth-Bodrogi E, Kovács T, Szigeti K. Radiomic detection of microscopic tumorous lesions in small animal liver SPECT imaging. EJNMMI Res 2019; 9:67. [PMID: 31346827 PMCID: PMC6658620 DOI: 10.1186/s13550-019-0532-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 01/18/2019] [Accepted: 07/12/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Our aim was to present a new data analysis technique for the early detection of tumorous lesions using single-photon emission computed tomography (SPECT) imaging. Beyond standardized uptake value (SUV) and standardized uptake concentration (SUC), the skewness and kurtosis parameters of whole liver activity distribution histograms were examined in SPECT images to reveal the presence of tumorous cells. METHODS Four groups of mice were used in our experiment: a healthy control group, a group of obese mice with high body mass index, and two tumorous groups (primary liver cancer group with chemically induced hepatocellular carcinoma (HCC); metastatic liver tumor group-xenograft of human melanoma (HM)). For the SPECT measurements, 99mTc-labeled aggregated albumin nanoparticles were administered intravenously 2 h before the liver SPECT scans (NanoSPECT/CT, Silver Upgrade, Mediso Ltd., Hungary) to image liver macrophages. Finally, SUV, SUC, skewness, and kurtosis of activity distributions were calculated from segmented whole liver volumes. RESULTS HCC animals showed moderate 99mTc-albumin particle uptake with some visually identified cold spots indicating the presence of tumors. The visual detection of cold spots however was not a reliable marker of tumorous tissue in the metastatic group. The calculated SUV, SUC, and kurtosis parameters were not able to differentiate between the healthy and the tumorous groups. However, healthy and tumorous groups could be distinguished by comparing the skewness of the activity distribution. CONCLUSION Based on our results, 99mTc-albumin nanoparticle injection followed by liver SPECT activity distribution skewness calculation is a suitable image analysis tool. This makes possible to effectively and quantitatively investigate liver macrophage inhomogeneity and identify invisible but present liver cold spot lesions. Skewness as a direct image-derived parameter is able to show altered tissue function even before the visual manifestation of liver tumor foci. The skewness of activity distribution might be related to an inhomogeneous distribution of macrophage cells as a consequence of microscopic tumor burden in the liver.
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Affiliation(s)
- Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Domokos Máthé
- CROmed Translational Research Centers Ltd, Budapest, H-1047, Hungary.
| | - Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Fanni J Kiss
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Gabriella Taba
- Dosimetry and Radioprotection Service, Semmelweis University, Budapest, H-1082, Hungary
| | - Edit Tóth-Bodrogi
- Institute of Radiochemistry and Radioecology, University of Pannonia, Veszprém, H-8200, Hungary
| | - Tibor Kovács
- Institute of Radiochemistry and Radioecology, University of Pannonia, Veszprém, H-8200, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
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24
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Szöllősi D, Hegedűs N, Veres DS, Futó I, Horváth I, Kovács N, Martinecz B, Dénes Á, Seifert D, Bergmann R, Lebeda O, Varga Z, Kaleta Z, Szigeti K, Máthé D. Evaluation of Brain Nuclear Medicine Imaging Tracers in a Murine Model of Sepsis-Associated Encephalopathy. Mol Imaging Biol 2019; 20:952-962. [PMID: 29736562 PMCID: PMC6244542 DOI: 10.1007/s11307-018-1201-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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] [Indexed: 12/13/2022]
Abstract
Purpose The purpose of this study was to evaluate a set of widely used nuclear medicine imaging agents as possible methods to study the early effects of systemic inflammation on the living brain in a mouse model of sepsis-associated encephalopathy (SAE). The lipopolysaccharide (LPS)-induced murine systemic inflammation model was selected as a model of SAE. Procedures C57BL/6 mice were used. A multimodal imaging protocol was carried out on each animal 4 h following the intravenous administration of LPS using the following tracers: [99mTc][2,2-dimethyl-3-[(3E)-3-oxidoiminobutan-2-yl]azanidylpropyl]-[(3E)-3-hydroxyiminobutan-2-yl]azanide ([99mTc]HMPAO) and ethyl-7-[125I]iodo-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate ([125I]iomazenil) to measure brain perfusion and neuronal damage, respectively; 2-deoxy-2-[18F]fluoro-d-glucose ([18F]FDG) to measure cerebral glucose uptake. We assessed microglia activity on another group of mice using 2-[6-chloro-2-(4-[125I]iodophenyl)-imidazo[1,2-a]pyridin-3-yl]-N-ethyl-N-methyl-acetamide ([125I]CLINME). Radiotracer uptakes were measured in different brain regions and correlated. Microglia activity was also assessed using immunohistochemistry. Brain glutathione levels were measured to investigate oxidative stress. Results Significantly reduced perfusion values and significantly enhanced [18F]FDG and [125I]CLINME uptake was measured in the LPS-treated group. Following perfusion compensation, enhanced [125I]iomazenil uptake was measured in the LPS-treated group’s hippocampus and cerebellum. In this group, both [18F]FDG and [125I]iomazenil uptake showed highly negative correlation to perfusion measured with ([99mTc]HMPAO uptake in all brain regions. No significant differences were detected in brain glutathione levels between the groups. The CD45 and P2Y12 double-labeling immunohistochemistry showed widespread microglia activation in the LPS-treated group. Conclusions Our results suggest that [125I]CLINME and [99mTc]HMPAO SPECT can be used to detect microglia activation and brain hypoperfusion, respectively, in the early phase (4 h post injection) of systemic inflammation. We suspect that the enhancement of [18F]FDG and [125I]iomazenil uptake in the LPS-treated group does not necessarily reflect neural hypermetabolism and the lack of neuronal damage. They are most likely caused by processes emerging during neuroinflammation, e.g., microglia activation and/or immune cell infiltration. Electronic supplementary material The online version of this article (10.1007/s11307-018-1201-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dávid Szöllősi
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary
| | - Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary
| | - Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary
| | - Ildikó Futó
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary
| | - Noémi Kovács
- CROmed Translational Research Centers, Budapest, H-1047, Hungary
| | - Bernadett Martinecz
- Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Ádám Dénes
- Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Daniel Seifert
- Nuclear Physics Institute of the CAS, CZ 250 68, Rez, Czech Republic
| | - Ralf Bergmann
- Helmholz-Zentrum Dresden-Rossendorf, Radiopharmazie Radiopharmaceutische Biologie, Dresden, Germany
| | - Ondřej Lebeda
- Nuclear Physics Institute of the CAS, CZ 250 68, Rez, Czech Republic
| | - Zoltán Varga
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary.,Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Zoltán Kaleta
- Progressio Fine Chemical Engineering Ltd, Székesfehérvár, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis Univ, Budapest, H-1094, Hungary.
| | - Domokos Máthé
- CROmed Translational Research Centers, Budapest, H-1047, Hungary
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Gyánó M, Góg I, Óriás VI, Ruzsa Z, Nemes B, Csobay-Novák C, Oláh Z, Nagy Z, Merkely B, Szigeti K, Osváth S, Sótonyi P. Kinetic Imaging in Lower Extremity Arteriography: Comparison to Digital Subtraction Angiography. Radiology 2019; 290:246-253. [DOI: 10.1148/radiol.2018172927] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Marcell Gyánó
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - István Góg
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Viktor I. Óriás
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Zoltán Ruzsa
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Balázs Nemes
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Csaba Csobay-Novák
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Zoltán Oláh
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Zsuzsa Nagy
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Béla Merkely
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Krisztián Szigeti
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Szabolcs Osváth
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
| | - Péter Sótonyi
- From Kinepict Health Ltd, Budapest, Hungary (M.G., I.G., V.I.Ó., K.S., S.O.); and Heart and Vascular Center (M.G., V.I.Ó., Z.R., B.N., C.C.N., Z.O., Z.N., B.M., P.S.) and Department of Biophysics and Radiation Biology (I.G., K.S., S.O.), Semmelweis University, Városmajor u. 68, Budapest H-1122, Hungary
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Budán F, Szigeti K, Weszl M, Horváth I, Balogh E, Kanaan R, Berényi K, Lacza Z, Máthé D, Gyöngyi Z. Novel radiomics evaluation of bone formation utilizing multimodal (SPECT/X-ray CT) in vivo imaging. PLoS One 2018; 13:e0204423. [PMID: 30252902 PMCID: PMC6155529 DOI: 10.1371/journal.pone.0204423] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 09/09/2018] [Indexed: 01/24/2023] Open
Abstract
Although an extensive research is being undertaken, the ideal bone graft and evaluation method of the bone formation draw still a warranted attention. The purpose of this study was to develop a novel multimodal radiomics evaluation method, utilizing X-ray computed tomography (CT) and single photon emission computed tomography (SPECT) with Tc-99m-Methyl diphosphonate (Tc-99m-MDP) tracer. These modalities are intended to provide quantitative data concerning the mineral bone density (after evaluation it is referred to as opacity) and the osteoblast activity, at the same time. The properties of bone formation process within poly (methyl methacrylate)-based bone cement graft (PMMA) was compared to that of albumin coated, sterilized, antigen-extracted freeze-dried human bone grafts (HLBC), in caudal vertebrae (C5) of rats. The animals were scanned at 3 and 8 weeks after surgery. In both groups, the mean opacity increased, while the mean Tc-99m-MDP activity decreased. The later parameter was significant (n = 4, p = 0.002) only in HLBC group. The linear regression analysis of PMMA-treated group variables (mean opacity increase; mean Tc-99m-MDP activity decrease), revealed a negative correlation with the medium strength (r = 0.395, p = 0.605). Whereas, it showed strong positive correlation when HLBC group variables were analyzed (r = 0.772, p = 0.012). These results indicate that using HLBC grafts is advantageous in terms of the osteoblast activity and bone vascularization over PMMA cement. Using this regression analysis method, we were able to distinguish characteristics that otherwise could not be distinguished by a regular data analysis. Hence, we propose utilizing this novel method in preclinical tests, and in clinical monitoring of bone healing, in order to improve diagnosis of bone-related diseases.
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Affiliation(s)
- Ferenc Budán
- Department of Public Health Medicine, Medical School, University of Pécs, Pécs, Hungary
- MedProDevelop, Pécs, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Miklós Weszl
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Department of Health Economics, Corvinus University of Budapest, Budapest, Hungary
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Erika Balogh
- Department of Public Health Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Reem Kanaan
- Department of Public Health Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Károly Berényi
- Department of Public Health Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Zsombor Lacza
- Department of Health Economics, Corvinus University of Budapest, Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- CROmed Translational Research Centers, Budapest, Hungary
| | - Zoltán Gyöngyi
- Department of Public Health Medicine, Medical School, University of Pécs, Pécs, Hungary
- * E-mail:
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Nagy CT, Koncsos G, Varga ZV, Baranyai T, Tuza S, Kassai F, Ernyey AJ, Gyertyán I, Király K, Oláh A, Radovits T, Merkely B, Bukosza N, Szénási G, Hamar P, Mathé D, Szigeti K, Pelyhe C, Jelemenský M, Onódi Z, Helyes Z, Schulz R, Giricz Z, Ferdinandy P. Selegiline reduces adiposity induced by high-fat, high-sucrose diet in male rats. Br J Pharmacol 2018; 175:3713-3726. [PMID: 29971762 DOI: 10.1111/bph.14437] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 06/22/2018] [Accepted: 06/25/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Incidence and severity of obesity are increasing worldwide, however, efficient and safe pharmacological treatments are not yet available. Certain MAO inhibitors reduce body weight, although their effects on metabolic parameters have not been investigated. Here, we have assessed effects of a widely used, selective MAO-B inhibitor, selegiline, on metabolic parameters in a rat model of diet-induced obesity. EXPERIMENTAL APPROACH Male Long-Evans rats were given control (CON) or a high-fat (20%), high-sucrose (15%) diet (HFS) for 25 weeks. From week 16, animals were injected s.c. with 0.25 mg·kg-1 selegiline (CON + S and HFS + S) or vehicle (CON, HFS) once daily. Whole body, subcutaneous and visceral fat was measured by CT, and glucose and insulin tolerance were tested. Expression of glucose transporters and chemokines was assessed by quantitative RT-PCR. KEY RESULTS Selegiline decreased whole body fat, subcutaneous- and visceral adiposity, measured by CT and epididymal fat weight in the HFS group, compared with HFS placebo animals, without influencing body weight. Oral glucose tolerance and insulin tolerance tests showed impaired glucose homeostasis in HFS and HFS + S groups, although insulin levels in plasma and pancreas were unchanged. HFS induced expression of Srebp-1c, Glut1 and Ccl3 in adipose tissue, which were alleviated by selegiline. CONCLUSIONS AND IMPLICATIONS Selegiline reduced adiposity, changes in adipose tissue energy metabolism and adipose inflammation induced by HFS diet without affecting the increased body weight, impairment of glucose homeostasis, or behaviour. These results suggest that selegiline could mitigate harmful effects of visceral adiposity.
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Affiliation(s)
- Csilla Terézia Nagy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Gábor Koncsos
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Zoltán V Varga
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Tamás Baranyai
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Sebestyén Tuza
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Ferenc Kassai
- MTA-SE NAP B Cognitive Translational Behavioural Pharmacology Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Institute of Cognitive Neuroscience and Psychology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Aliz Judit Ernyey
- MTA-SE NAP B Cognitive Translational Behavioural Pharmacology Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Institute of Cognitive Neuroscience and Psychology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - István Gyertyán
- MTA-SE NAP B Cognitive Translational Behavioural Pharmacology Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Institute of Cognitive Neuroscience and Psychology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Kornél Király
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Attila Oláh
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Nóra Bukosza
- Institute of Pathophysiology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Gábor Szénási
- Institute of Pathophysiology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Hamar
- Institute of Pathophysiology, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Clinical Experimental Research Institute, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Translational Medicine Institute, Faculty of Medicine, Pécs University, Pécs, Hungary
| | - Domokos Mathé
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Csilla Pelyhe
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Marek Jelemenský
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Zsófia Onódi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School and Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Rainer Schulz
- Institute of Physiology, Justus-Liebig University Giessen, Germany
| | - Zoltán Giricz
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Pharmahungary Group, Szeged, Hungary
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28
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Kalmar A, Nagy Z, Galamb O, Wichmann B, Bartak B, Valcz G, Szigeti K, Tulassay Z, Igaz P, Molnar B. PO-377 Whole transcriptome analysis reveals colorectal cancer-associated long non-coding RNAs including UCA1 already dysregulated in colorectal adenomas. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.405] [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: 11/03/2022] Open
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29
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Nagy Z, Bartak B, Kalmar A, Wichmann B, Galamb O, Zsigrai S, Szigeti K, Igaz P, Tulassay Z, Molnar B. PO-378 Systematic miRNA expression changes in human colorectal cancer development and in animal model. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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30
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Wichmann B, Nagy Z, Barták B, Galamb O, Kalmár A, Zsigrai S, Szigeti K, Igaz P, Tulassay Z, Molnár B. PO-275 Gene expression and splicing variants changes in colorectal cancer related cell function pathways. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.789] [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: 11/03/2022] Open
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31
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Schay G, Kaposi AD, Smeller L, Szigeti K, Fidy J, Herenyi L. Dissimilar flexibility of α and β subunits of human adult hemoglobin influences the protein dynamics and its alteration induced by allosteric effectors. PLoS One 2018; 13:e0194994. [PMID: 29584765 PMCID: PMC5871000 DOI: 10.1371/journal.pone.0194994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/14/2018] [Indexed: 12/19/2022] Open
Abstract
The general question by what mechanism an "effector" molecule and the hemes of hemoglobin interact over widely separated intramolecular distances to change the oxygen affinity has been extensively investigated, and still has remained of central interest. In the present work we were interested in clarifying the general role of the protein matrix and its dynamics in the regulation of human adult hemoglobin (HbA). We used a spectroscopy approach that yields the compressibility (κ) of the protein matrix around the hemes of the subunits in HbA and studied how the binding of heterotropic allosteric effectors modify this parameter. κ is directly related to the variance of volume fluctuation, therefore it characterizes the molecular dynamics of the protein structure. For the experiments the heme groups either in the α or in the β subunits of HbA were replaced by fluorescent Zn-protoporphyrinIX, and series of fluorescence line narrowed spectra were measured at varied pressures. The evaluation of the spectra yielded the compressibility that showed significant dynamic asymmetry between the subunits: κ of the α subunit was 0.17±0.05/GPa, while for the β subunit it was much higher, 0.36±0.07/GPa. The heterotropic effectors, chloride ions, inositol hexaphosphate and bezafibrate did not cause significant changes in κ of the α subunits, while in the β subunits the effectors lead to a significant reduction down to 0.15±0.04/GPa. We relate our results to structural data, to results of recent functional studies and to those of molecular dynamics simulations, and find good agreements. The observed asymmetry in the flexibility suggests a distinct role of the subunits in the regulation of Hb that results in the observed changes of the oxygen binding capability.
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Affiliation(s)
- Gusztáv Schay
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - András D. Kaposi
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - László Smeller
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Judit Fidy
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Levente Herenyi
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- * E-mail:
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32
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Bors L, Tóth K, Tóth EZ, Bajza Á, Csorba A, Szigeti K, Máthé D, Perlaki G, Orsi G, Tóth GK, Erdő F. Age-dependent changes at the blood-brain barrier. A Comparative structural and functional study in young adult and middle aged rats. Brain Res Bull 2018. [PMID: 29522862 DOI: 10.1016/j.brainresbull.2018.03.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Decreased beta-amyloid clearance in Alzheimer's disease and increased blood-brain barrier permeability in aged subjects have been reported in several articles. However, morphological and functional characterization of blood-brain barrier and its membrane transporter activity have not been described in physiological aging yet. The aim of our study was to explore the structural changes in the brain microvessels and possible functional alterations of P-glycoprotein at the blood-brain barrier with aging. Our approach included MR imaging for anatomical orientation in middle aged rats, electronmicroscopy and immunohistochemistry to analyse the alterations at cellular level, dual or triple-probe microdialysis and SPECT to test P-glycoprotein functionality in young and middle aged rats. Our results indicate that the thickness of basal lamina increases, the number of tight junctions decreases and the size of astrocyte endfeet extends with advanced age. On the basis of microdialysis and SPECT results the P-gp function is reduced in old rats. With our multiparametric approach a complex regulation can be suggested which includes elements leading to increased permeability of blood-brain barrier by enhanced paracellular and transcellular transport, and factors working against it. To verify the role of P-gp pumps in brain aging further studies are warranted.
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Affiliation(s)
- Luca Bors
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Práter u. 50a, H-1083 Budapest
| | - Kinga Tóth
- Hungarian Academy of Sciences, Institute of Cognitive Neuroscience and Psychology, Magyar tudósok körútja 2. H-1117 Budapest
| | - Estilla Zsófia Tóth
- Hungarian Academy of Sciences, Institute of Cognitive Neuroscience and Psychology, Magyar tudósok körútja 2. H-1117 Budapest
| | - Ágnes Bajza
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Práter u. 50a, H-1083 Budapest
| | - Attila Csorba
- University of Szeged, Faculty of Pharmacy, Deparment of Pharmacognosy, Eötvös u. 6, H-6720 Szeged
| | - Krisztián Szigeti
- Semmelweis University, Faculty of Medicine, Department of Biophysics and Radiation Biology, Tűzoltó u. 37-47, H-1094 Budapest
| | - Domokos Máthé
- Semmelweis University, Faculty of Medicine, Department of Biophysics and Radiation Biology, Tűzoltó u. 37-47, H-1094 Budapest,; CROmed Translational Research Ltd. Budapest
| | - Gábor Perlaki
- MTA-PTE Clinical Neuroscience MR Research Group, Ret u. 2, H-7623 Pecs, Hungary; Department of Neurosurgery, University of Pecs, Medical School, Ret u. 2, H-7623 Pecs, Hungary
| | - Gergely Orsi
- MTA-PTE Clinical Neuroscience MR Research Group, Ret u. 2, H-7623 Pecs, Hungary; Department of Neurosurgery, University of Pecs, Medical School, Ret u. 2, H-7623 Pecs, Hungary
| | - Gábor K Tóth
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Dóm tér 8, H-6720, Szeged, Hungary
| | - Franciska Erdő
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Práter u. 50a, H-1083 Budapest.
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33
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Pálmai M, Pethő A, Nagy LN, Klébert S, May Z, Mihály J, Wacha A, Jemnitz K, Veres Z, Horváth I, Szigeti K, Máthé D, Varga Z. Direct immobilization of manganese chelates on silica nanospheres for MRI applications. J Colloid Interface Sci 2017; 498:298-305. [DOI: 10.1016/j.jcis.2017.03.053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/10/2017] [Accepted: 03/13/2017] [Indexed: 12/24/2022]
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Abstract
In recent decades, imaging devices have become indispensable tools in the basic sciences, in preclinical research and in modern drug development. The rapidly evolving high-resolution in vivo imaging technologies provide a unique opportunity for studying biological processes of living organisms in real time on a molecular level. State of the art small-animal imaging modalities provide non-invasive images rich in quantitative anatomical and functional information, which renders longitudinal studies possible allowing precise monitoring of disease progression and response to therapy in models of different diseases. The number of animals in a scientific investigation can be substantially reduced using imaging techniques, which is in full compliance with the ethical endeavours for the 3R (reduction, refinement, replacement) policies formulated by Russell and Burch; furthermore, biological variability can be alleviated, as each animal serves as its own control. The most suitable and commonly used imaging modalities for in vivo small-animal imaging are optical imaging (OI), ultrasonography (US), computed tomography (CT), magnetic resonance imaging (MRI), and finally the methods of nuclear medicine: positron emission tomography (PET) and single photon emission computed tomography (SPECT).
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Affiliation(s)
- David Tibor Lauber
- 1 Hepato-Pancreatico-Biliary Surgery Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - András Fülöp
- 1 Hepato-Pancreatico-Biliary Surgery Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Tibor Kovács
- 1 Hepato-Pancreatico-Biliary Surgery Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary
- 2 Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Krisztián Szigeti
- 2 Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Domokos Máthé
- 2 Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- 3 CROmed Translational Research Centers Ltd, Budapest, Hungary
| | - Attila Szijártó
- 1 Hepato-Pancreatico-Biliary Surgery Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary
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35
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Varga Z, Gyurkó I, Pálóczi K, Buzás EI, Horváth I, Hegedűs N, Máthé D, Szigeti K. Radiolabeling of Extracellular Vesicles with (99m)Tc for Quantitative In Vivo Imaging Studies. Cancer Biother Radiopharm 2017; 31:168-73. [PMID: 27310303 DOI: 10.1089/cbr.2016.2009] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The biodistribution of extracellular vesicles (EVs) is a fundamental question in the field of circulating biomarkers, which has recently gained attention. Despite the capabilities of nuclear imaging methods, such as single-photon emission computed tomography, radioisotope labeling of EVs and the use of the aforementioned methods for in vivo studies hardly can be found in the literature. In this article, the authors describe a novel method for the radioisotope labeling of erythrocyte-derived EVs using the (99m)Tc-tricarbonyl complex. Moreover, the capability of the developed labeling method for in vivo biodistribution studies is demonstrated in a mouse model. The authors found that the intravenously administered (99m)Tc-labeled EVs mostly accumulated in the liver and spleen. The in vivo stability of the labeled EVs was assessed by the comparison of the obtained biodistribution of EVs with that of the free (99m)Tc-tricarbonyl. According to the authors' data, only a minor fraction of the radioactive label became detached from the EVs.
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Affiliation(s)
- Zoltán Varga
- 1 Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry , Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - István Gyurkó
- 1 Biological Nanochemistry Research Group, Institute of Materials and Environmental Chemistry , Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Krisztina Pálóczi
- 2 Department of Genetics, Cell- and Immunobiology, Semmelweis University , Budapest, Hungary
| | - Edit I Buzás
- 2 Department of Genetics, Cell- and Immunobiology, Semmelweis University , Budapest, Hungary
| | - Ildikó Horváth
- 3 Department of Biophysics and Radiation Biology, Semmelweis University , Budapest, Hungary
| | - Nikolett Hegedűs
- 3 Department of Biophysics and Radiation Biology, Semmelweis University , Budapest, Hungary
| | - Domokos Máthé
- 3 Department of Biophysics and Radiation Biology, Semmelweis University , Budapest, Hungary .,4 CROmed Translational Research Centers , Budapest, Hungary
| | - Krisztián Szigeti
- 3 Department of Biophysics and Radiation Biology, Semmelweis University , Budapest, Hungary
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Diós P, Szigeti K, Budán F, Pócsik M, Veres DS, Máthé D, Pál S, Dévay A, Nagy S. Influence of barium sulfate X-ray imaging contrast material on properties of floating drug delivery tablets. Eur J Pharm Sci 2016; 95:46-53. [PMID: 27687639 DOI: 10.1016/j.ejps.2016.09.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 09/16/2016] [Accepted: 09/25/2016] [Indexed: 11/27/2022]
Abstract
The objective of the study was to reveal the influence of necessarily added barium sulfate (BaSO4) X-ray contrast material on floating drug delivery tablets. Based on literature survey, a chosen floating tablet composition was determined containing HPMC and carbopol 943P as matrix polymers. One-factor factorial design with five levels was created for evaluation of BaSO4 (X1) effects on experimental parameters of tablets including: floating lag time, total floating time, swelling-, erosion-, dissolution-, release kinetics parameters and X-ray detected volume changes of tablets. Applied concentrations of BaSO4 were between 0 and 20.0% resulting in remarkable alteration of experimental parameters related especially to flotation. Drastic deterioration of floating lag time and total floating time could be observed above 15.0% BaSO4. Furthermore, BaSO4 showed to increase the integrity of tablet matrix by reducing eroding properties. A novel evaluation of dissolutions from floating drug delivery systems was introduced, which could assess the quantity of drug dissolved from dosage form in floating state. In the cases of tablets containing 20.0% BaSO4, only the 40% of total API amount could be dissolved in floating state. In vitro fine resolution X-ray CT imagings were performed to study the volume change and the voxel distributions as a function of HU attenuations by histogram analysis of the images. X-ray detected relative volume change results did not show significant difference between samples. After 24h, all tablets containing BaSO4 could be segmented, which highlighted the fact that enough BaSO4 remained in the tablets for their identification.
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Affiliation(s)
- Péter Diós
- Institute of Pharmaceutical Technology and Biopharmacy, University of Pécs, Rókus str. 2, H-7624 Pécs, Hungary.
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary
| | - Ferenc Budán
- CROmed Translational Research Centers, Baross str. 91-95, H-1047 Budapest, Hungary; Department of Public Health Medicine, University of Pécs, Szigeti str. 12, H-7624 Pécs, Hungary
| | - Márta Pócsik
- CROmed Translational Research Centers, Baross str. 91-95, H-1047 Budapest, Hungary
| | - Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary; CROmed Translational Research Centers, Baross str. 91-95, H-1047 Budapest, Hungary
| | - Szilárd Pál
- Institute of Pharmaceutical Technology and Biopharmacy, University of Pécs, Rókus str. 2, H-7624 Pécs, Hungary
| | - Attila Dévay
- Institute of Pharmaceutical Technology and Biopharmacy, University of Pécs, Rókus str. 2, H-7624 Pécs, Hungary
| | - Sándor Nagy
- Institute of Pharmaceutical Technology and Biopharmacy, University of Pécs, Rókus str. 2, H-7624 Pécs, Hungary
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Koncsos G, Varga ZV, Baranyai T, Boengler K, Rohrbach S, Li L, Schlüter KD, Schreckenberg R, Radovits T, Oláh A, Mátyás C, Lux Á, Al-Khrasani M, Komlódi T, Bukosza N, Máthé D, Deres L, Barteková M, Rajtík T, Adameová A, Szigeti K, Hamar P, Helyes Z, Tretter L, Pacher P, Merkely B, Giricz Z, Schulz R, Ferdinandy P. Diastolic dysfunction in prediabetic male rats: Role of mitochondrial oxidative stress. Am J Physiol Heart Circ Physiol 2016; 311:H927-H943. [PMID: 27521417 DOI: 10.1152/ajpheart.00049.2016] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 07/25/2016] [Indexed: 12/23/2022]
Abstract
Although incidence and prevalence of prediabetes are increasing, little is known about its cardiac effects. Therefore, our aim was to investigate the effect of prediabetes on cardiac function and to characterize parameters and pathways associated with deteriorated cardiac performance. Long-Evans rats were fed with either control or high-fat chow for 21 wk and treated with a single low dose (20 mg/kg) of streptozotocin at week 4 High-fat and streptozotocin treatment induced prediabetes as characterized by slightly elevated fasting blood glucose, impaired glucose and insulin tolerance, increased visceral adipose tissue and plasma leptin levels, as well as sensory neuropathy. In prediabetic animals, a mild diastolic dysfunction was observed, the number of myocardial lipid droplets increased, and left ventricular mass and wall thickness were elevated; however, no molecular sign of fibrosis or cardiac hypertrophy was shown. In prediabetes, production of reactive oxygen species was elevated in subsarcolemmal mitochondria. Expression of mitofusin-2 was increased, while the phosphorylation of phospholamban and expression of Bcl-2/adenovirus E1B 19-kDa protein-interacting protein 3 (BNIP3, a marker of mitophagy) decreased. However, expression of other markers of cardiac auto- and mitophagy, mitochondrial dynamics, inflammation, heat shock proteins, Ca2+/calmodulin-dependent protein kinase II, mammalian target of rapamycin, or apoptotic pathways were unchanged in prediabetes. This is the first comprehensive analysis of cardiac effects of prediabetes indicating that mild diastolic dysfunction and cardiac hypertrophy are multifactorial phenomena that are associated with early changes in mitophagy, cardiac lipid accumulation, and elevated oxidative stress and that prediabetes-induced oxidative stress originates from the subsarcolemmal mitochondria.
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Affiliation(s)
- Gábor Koncsos
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Zoltán V Varga
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary; Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland
| | - Tamás Baranyai
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Kerstin Boengler
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Susanne Rohrbach
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Ling Li
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Klaus-Dieter Schlüter
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Rolf Schreckenberg
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Attila Oláh
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Csaba Mátyás
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Árpád Lux
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Mahmoud Al-Khrasani
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Tímea Komlódi
- Department of Medical Biochemistry, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Nóra Bukosza
- Institute of Pathophysiology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary; CROmed Translational Research Centers, Budapest, Hungary
| | - László Deres
- 1st Department of Internal Medicine, Faculty of Medicine, University of Pécs, Pécs, Hungary
| | - Monika Barteková
- Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Slovakia; Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Tomáš Rajtík
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Adriana Adameová
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Hamar
- Institute of Pathophysiology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine and Szentágothai Research Centre & MTA-PTE NAP B Chronic Pain Research Group, University of Pécs, Pécs, Hungary; and
| | - László Tretter
- Department of Medical Biochemistry, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Pál Pacher
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary; Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Zoltán Giricz
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary;
| | - Rainer Schulz
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
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Máthé D, Szigeti K, Hegedűs N, Horváth I, Veres DS, Kovács B, Szűcs Z. Production and in vivo imaging of (203)Pb as a surrogate isotope for in vivo (212)Pb internal absorbed dose studies. Appl Radiat Isot 2016; 114:1-6. [PMID: 27156049 DOI: 10.1016/j.apradiso.2016.04.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 01/21/2016] [Revised: 03/29/2016] [Accepted: 04/20/2016] [Indexed: 11/18/2022]
Abstract
(212)Pb is a clinically relevant therapeutic alpha emitter isotope. A surrogate, (203)Pb, if prepared with sufficiently high specific activity could be used to estimate (212)Pb in vivo absorbed doses. An improved production procedure of (203)Pb with a simple, new separation method and high specific radioactivity for imaging is reported. We determined the in-vivo biodistribution of (203)Pb in mice by SPECT/CT. This highlights application possibilities of (203)Pb for further in vivo and clinical uses (radiolabeled (212)Pb-peptide co-injection, dosimetry calculation).
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Affiliation(s)
- Domokos Máthé
- CROmed Research Centers Ltd., Baross utca 91-95, H-1047 Budapest, Hungary.
| | - Krisztián Szigeti
- Dept. of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary.
| | - Nikolett Hegedűs
- Dept. of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary.
| | - Ildikó Horváth
- Dept. of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary.
| | - Dániel S Veres
- Dept. of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, H-1094 Budapest, Hungary.
| | - Béla Kovács
- Institute of Food Science, University of Debrecen, Böszörményi út 138, H-4032 Debrecen, Hungary.
| | - Zoltán Szűcs
- Dept. of Cyclotron Application, MTA Atomki, Bem tér 18/c, H-4026 Debrecen, Hungary.
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Cui X, Mathe D, Kovács N, Horváth I, Jauregui-Osoro M, Torres Martin
de Rosales R, Mullen GED, Wong W, Yan Y, Krüger D, Khlobystov AN, Gimenez-Lopez M, Semjeni M, Szigeti K, Veres D, Lu H, Hernández I, Gillin WP, Protti A, Petik KK, Green MA, Blower PJ. Synthesis, Characterization, and Application of Core-Shell Co0.16Fe2.84O4@NaYF4(Yb, Er) and Fe3O4@NaYF4(Yb, Tm) Nanoparticle as Trimodal (MRI, PET/SPECT, and Optical) Imaging Agents. Bioconjug Chem 2016; 27:319-28. [PMID: 26172432 PMCID: PMC4759617 DOI: 10.1021/acs.bioconjchem.5b00338] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 07/14/2015] [Indexed: 01/27/2023]
Abstract
Multimodal nanoparticulate materials are described, offering magnetic, radionuclide, and fluorescent imaging capabilities to exploit the complementary advantages of magnetic resonance imaging (MRI), positron emission tomography/single-photon emission commuted tomography (PET/SPECT), and optical imaging. They comprise Fe3O4@NaYF4 core/shell nanoparticles (NPs) with different cation dopants in the shell or core, including Co0.16Fe2.84O4@NaYF4(Yb, Er) and Fe3O4@NaYF4(Yb, Tm). These NPs are stabilized by bisphosphonate polyethylene glycol conjugates (BP-PEG), and then show a high transverse relaxivity (r2) up to 326 mM(-1) s(-1) at 3T, a high affinity to [(18)F]-fluoride or radiometal-bisphosphonate conjugates (e.g., (64)Cu and (99m)Tc), and fluorescent emissions from 500 to 800 nm under excitation at 980 nm. The biodistribution of intravenously administered particles determined by PET/MR imaging suggests that negatively charged Co0.16Fe2.84O4@NaYF4(Yb, Er)-BP-PEG (10K) NPs cleared from the blood pool more slowly than positively charged NPs Fe3O4@NaYF4(Yb, Tm)-BP-PEG (2K). Preliminary results in sentinel lymph node imaging in mice indicate the advantages of multimodal imaging.
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Affiliation(s)
- Xianjin Cui
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
| | - Domokos Mathe
- CROmed
Ltd. Baross u. 91-95, H-1047, Budapest, Hungary
| | - Noémi Kovács
- CROmed
Ltd. Baross u. 91-95, H-1047, Budapest, Hungary
| | - Ildikó Horváth
- Department
of Biophysics and Radiation Biology, Semmelweis
University, IX. Tűzoltó
u. 37-47, H-1094, Budapest, Hungary
| | - Maite Jauregui-Osoro
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
| | - Rafael Torres Martin
de Rosales
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
- King’s
College London, Division of Chemistry, Britannia
House, 7 Trinity St., London, SE1 1DB, United Kingdom
| | - Gregory E. D. Mullen
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
| | - Wilson Wong
- MRC
Centre for Transplantation, King’s
College London, Guys
Hospital, London, SE1 9RT, United Kingdom
| | - Yong Yan
- School of
Chemistry, Nottingham University, Nottingham, NG7 2RD, U.K.
| | - Dirk Krüger
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
| | | | | | | | - Krisztián Szigeti
- Department
of Biophysics and Radiation Biology, Semmelweis
University, IX. Tűzoltó
u. 37-47, H-1094, Budapest, Hungary
| | - Dániel
S Veres
- Department
of Biophysics and Radiation Biology, Semmelweis
University, IX. Tűzoltó
u. 37-47, H-1094, Budapest, Hungary
| | - Haizhou Lu
- School
of Physics and Astronomy, Queen Mary University
of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Ignacio Hernández
- Dpto.
CITIMAC, Universidad de Cantabria, Avda. Los Castros, s/n 39005, Santander, Spain
| | - William P. Gillin
- School
of Physics and Astronomy, Queen Mary University
of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Andrea Protti
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
| | - Katalin Kis Petik
- Department
of Biophysics and Radiation Biology, Semmelweis
University, IX. Tűzoltó
u. 37-47, H-1094, Budapest, Hungary
| | - Mark A. Green
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
- King’s
College London, Division of Chemistry, Britannia
House, 7 Trinity St., London, SE1 1DB, United Kingdom
- King’s
College London, Department of Physics, Strand Campus, London, WC2R 2LS, United
Kingdom
| | - Philip J. Blower
- King’s
College London, Division of Imaging Sciences
and Biomedical Engineering, Fourth Floor Lambeth Wing, St. Thomas Hospital, London, SE1 7EH, United
Kingdom
- King’s
College London, Division of Chemistry, Britannia
House, 7 Trinity St., London, SE1 1DB, United Kingdom
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40
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Szigeti K, Szabó T, Korom C, Czibak I, Horváth I, Veres DS, Gyöngyi Z, Karlinger K, Bergmann R, Pócsik M, Budán F, Máthé D. Radiomics-based differentiation of lung disease models generated by polluted air based on X-ray computed tomography data. BMC Med Imaging 2016; 16:14. [PMID: 26864653 PMCID: PMC4750279 DOI: 10.1186/s12880-016-0118-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 02/01/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Lung diseases (resulting from air pollution) require a widely accessible method for risk estimation and early diagnosis to ensure proper and responsive treatment. Radiomics-based fractal dimension analysis of X-ray computed tomography attenuation patterns in chest voxels of mice exposed to different air polluting agents was performed to model early stages of disease and establish differential diagnosis. METHODS To model different types of air pollution, BALBc/ByJ mouse groups were exposed to cigarette smoke combined with ozone, sulphur dioxide gas and a control group was established. Two weeks after exposure, the frequency distributions of image voxel attenuation data were evaluated. Specific cut-off ranges were defined to group voxels by attenuation. Cut-off ranges were binarized and their spatial pattern was associated with calculated fractal dimension, then abstracted by the fractal dimension -- cut-off range mathematical function. Nonparametric Kruskal-Wallis (KW) and Mann-Whitney post hoc (MWph) tests were used. RESULTS Each cut-off range versus fractal dimension function plot was found to contain two distinctive Gaussian curves. The ratios of the Gaussian curve parameters are considerably significant and are statistically distinguishable within the three exposure groups. CONCLUSIONS A new radiomics evaluation method was established based on analysis of the fractal dimension of chest X-ray computed tomography data segments. The specific attenuation patterns calculated utilizing our method may diagnose and monitor certain lung diseases, such as chronic obstructive pulmonary disease (COPD), asthma, tuberculosis or lung carcinomas.
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Affiliation(s)
- Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, Budapest, H-1094, Hungary.
| | - Tibor Szabó
- CROmed Translational Research Centers Ltd., Baross utca 91-95, Budapest, H-1047, Hungary
| | - Csaba Korom
- Department of Radiology and Oncotherapy, Semmelweis University, Üllői út 78/A, Budapest, H-1082, Hungary.
| | - Ilona Czibak
- CROmed Translational Research Centers Ltd., Baross utca 91-95, Budapest, H-1047, Hungary.
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, Budapest, H-1094, Hungary.
| | - Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, Budapest, H-1094, Hungary.
| | - Zoltán Gyöngyi
- Department of Public Health Medicine, University of Pécs, Szigeti út 12, Pécs, H-7624, Hungary.
| | - Kinga Karlinger
- Department of Radiology and Oncotherapy, Semmelweis University, Üllői út 78/A, Budapest, H-1082, Hungary.
| | - Ralf Bergmann
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, D-01314, Germany.
| | - Márta Pócsik
- CROmed Translational Research Centers Ltd., Baross utca 91-95, Budapest, H-1047, Hungary.
| | - Ferenc Budán
- Department of Public Health Medicine, University of Pécs, Szigeti út 12, Pécs, H-7624, Hungary. .,MedProDevelop Kft, Irgalmasok utcája 16, Pécs, H-7621, Hungary.
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó utca 37-47, Budapest, H-1094, Hungary. .,CROmed Translational Research Centers Ltd., Baross utca 91-95, Budapest, H-1047, Hungary.
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Abstract
Dementia with Lewy bodies (DLB) is considered the second most common form of dementia in the elderly. The cognitive fluctuations, hallucinations and extrapyramidal symptoms and signs suggest simultaneous neurodegeneration in multiple neuronal pathways including both dopaminergic and cholinergic transmission. In the past few years, several small studies have demonstrated the benefit of acetylcholinesterase inhibitors (AChEIs) on the cognitive and behavioral symptoms of DLB. These drugs, by reversibly blocking the hydrolytic activity of AChE, increase the availability of synaptic acetylcholine. Neuropathological and neuroimaging studies demonstrated that cholinergic neurotransmission is more defective in DLB than in Alzheimer's disease (AD). Despite the relevance of AChEIs to DLB, there are no FDA-approved drugs for its management. The aim of this review is to summarize the literature on the application of donepezil in DLB. Although the results are inconclusive, when one compares and contrasts them to the results of the AD-donepezil trials, the effect size appears larger. Placebo-controlled, randomized, well-powered studies of adequate length are needed to avoid underutilization of a potentially efficacious drug.
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Affiliation(s)
- K Szigeti
- University of Buffalo, Department of Neurology, Buffalo, New York, USA.
| | - M U Hafeez
- University of Buffalo, Department of Neurology, Buffalo, New York, USA
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Szigeti K, Horváth I, Veres DS, Martinecz B, Lénárt N, Kovács N, Bakcsa E, Márta A, Semjéni M, Máthé D, Dénes Á. A novel SPECT-based approach reveals early mechanisms of central and peripheral inflammation after cerebral ischemia. J Cereb Blood Flow Metab 2015; 35. [PMID: 26219594 PMCID: PMC4671129 DOI: 10.1038/jcbfm.2015.174] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Inflammation that develops in the brain and peripheral organs after stroke contributes profoundly to poor outcome of patients. However, mechanisms through which inflammation impacts on brain injury and overall outcome are improperly understood, in part because the earliest inflammatory events after brain injury are not revealed by current imaging tools. Here, we show that single-photon emission computed tomography (NanoSPECT/CT Plus) allows visualization of blood brain barrier (BBB) injury after experimental stroke well before changes can be detected with magnetic resonance imaging (MRI). Early 99mTc-DTPA (diethylene triamine pentaacetic acid) signal changes predict infarct development and systemic inflammation preceding experimental stroke leads to very early perfusion deficits and increased BBB injury within 2 hours after the onset of ischemia. Acute brain injury also leads to peripheral inflammation and immunosuppression, which contribute to poor outcome of stroke patients. The SPECT imaging revealed early (within 2 hours) changes in perfusion, barrier function and inflammation in the lungs and the gut after experimental stroke, with good predictive value for the development of histopathologic changes at later time points. Collectively, visualization of early inflammatory changes after stroke could open new translational research avenues to elucidate the interactions between central and peripheral inflammation and to evaluate in vivo 'multi-system' effects of putative anti-inflammatory treatments.
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Affiliation(s)
- Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Bernadett Martinecz
- Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Nikolett Lénárt
- Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
| | - Noémi Kovács
- CROmed Translational Research Centers, Budapest, Hungary
| | - Erika Bakcsa
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Alexa Márta
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | | | - Domokos Máthé
- CROmed Translational Research Centers, Budapest, Hungary
| | - Ádám Dénes
- Laboratory of Neuroimmunology, Institute of Experimental Medicine, Budapest, Hungary
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43
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Diós P, Nagy S, Pál S, Pernecker T, Kocsis B, Budán F, Horváth I, Szigeti K, Bölcskei K, Máthé D, Dévay A. Preformulation studies and optimization of sodium alginate based floating drug delivery system for eradication of Helicobacter pylori. Eur J Pharm Biopharm 2015; 96:196-206. [DOI: 10.1016/j.ejpb.2015.07.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 05/21/2015] [Accepted: 07/21/2015] [Indexed: 10/23/2022]
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44
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Cui X, Green MA, Blower PJ, Zhou D, Yan Y, Zhang W, Djanashvili K, Mathe D, Veres DS, Szigeti K. Al(OH)3 facilitated synthesis of water-soluble, magnetic, radiolabelled and fluorescent hydroxyapatite nanoparticles. Chem Commun (Camb) 2015; 51:9332-5. [PMID: 25960059 PMCID: PMC4601318 DOI: 10.1039/c5cc02259b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 04/28/2015] [Indexed: 11/21/2022]
Abstract
Magnetic and fluorescent hydroxyapatite nanoparticles were synthesised using Al(OH)3-stabilised MnFe2O4 or Fe3O4 nanoparticles as precursors. They were readily and efficiently radiolabelled with (18)F. Bisphosphonate polyethylene glycol polymers were utilised to endow the nanoparticles with excellent colloidal stability in water and to incorporate cyclam for high affinity labelling with (64)Cu.
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Affiliation(s)
- X. Cui
- King's College London , Division of Imaging Sciences and Biomedical Engineering , 4th Floor of Lambeth wing , St Thomas Hospital , London SE1 7EH , UK . ;
| | - M. A. Green
- King's College London , Division of Imaging Sciences and Biomedical Engineering , 4th Floor of Lambeth wing , St Thomas Hospital , London SE1 7EH , UK . ;
- King's College London , Department of Physics , Strand Campus , London , WC2R 2LS , UK
| | - P. J. Blower
- King's College London , Division of Imaging Sciences and Biomedical Engineering , 4th Floor of Lambeth wing , St Thomas Hospital , London SE1 7EH , UK . ;
| | - D. Zhou
- Department of Mathematical Science , Loughborough University , Loughborough , LE11 3TU , UK
| | - Y. Yan
- School of Chemistry , Nottingham University , Nottingham , NG7 2RD , UK
| | - W. Zhang
- Department of Biotechnology , Delft University of Technology , Julianalaan, 136 , 2628 BL , Delft , The Netherlands
| | - K. Djanashvili
- Department of Biotechnology , Delft University of Technology , Julianalaan, 136 , 2628 BL , Delft , The Netherlands
| | - D. Mathe
- CROmed Ltd , Baross u. 91-95 , H-1047 , Budapest , Hungary
| | - D. S. Veres
- Department of Biophysics and Radiation Biology , Semmelweis University , IX, Tüzoltó u. 37-47 , H1094 , Budapest , Hungary
| | - K. Szigeti
- Department of Biophysics and Radiation Biology , Semmelweis University , IX, Tüzoltó u. 37-47 , H1094 , Budapest , Hungary
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45
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Botz B, Bölcskei K, Kereskai L, Kovács M, Németh T, Szigeti K, Horváth I, Máthé D, Kovács N, Hashimoto H, Reglődi D, Szolcsányi J, Pintér E, Mócsai A, Helyes Z. Differential regulatory role of pituitary adenylate cyclase-activating polypeptide in the serum-transfer arthritis model. Arthritis Rheumatol 2014; 66:2739-50. [PMID: 25048575 PMCID: PMC4320777 DOI: 10.1002/art.38772] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [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: 03/04/2014] [Accepted: 07/01/2014] [Indexed: 01/07/2023]
Abstract
Objective Pituitary adenylate cyclase–activating polypeptide (PACAP) expressed in capsaicin-sensitive sensory neurons and immune cells has divergent functions in inflammatory and pain processes. This study was undertaken to investigate the involvement of PACAP in a mouse model of rheumatoid arthritis. Methods Arthritis was induced in PACAP−/− and wild-type (PACAP+/+) mice by K/BxN serum transfer. General features of the disease were investigated by semiquantitative scoring, plethysmometry, and histopathologic analysis. Mechano- and thermonociceptive thresholds and motor functions were also evaluated. Metabolic activity was assessed by positron emission tomography. Bone morphology was measured by in vivo micro–computed tomography, myeloperoxidase activity and superoxide production by bioluminescence imaging with luminol and lucigenin, respectively, and vascular permeability by fluorescent indocyanine green dye study. Results PACAP+/+ mice developed notable joint swelling, reduced grasping ability, and mechanical (but not thermal) hyperalgesia after K/BxN serum transfer. In PACAP−/− mice clinical scores and edema were significantly reduced, and mechanical hyperalgesia and motor impairment were absent, throughout the 2-week period of observation. Metabolic activity and superoxide production increased in the tibiotarsal joints of wild-type mice but were significantly lower in PACAP−/− animals. Myeloperoxidase activity in the ankle joints of PACAP−/− mice was significantly reduced in the early phase of arthritis, but increased in the late phase. Synovial hyperplasia was also significantly increased, and progressive bone spur formation was observed in PACAP-deficient mice only. Conclusion In PACAP-deficient mice with serum-transfer arthritis, joint swelling, vascular leakage, hyperalgesia, and early inflammatory cell accumulation are reduced; in the later phase of the disease, immune cell function and bone neoformation are increased. Elucidation of the underlying pathways of PACAP activity may open promising new avenues for development of therapy in inflammatory arthritis.
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Affiliation(s)
- Bálint Botz
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, and Molecular Pharmacology Research Team, János Szentágothai Research Centre, University of Pécs, Pécs, Hungary
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46
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Abstract
A new X-ray imaging method (patent pending) was developed to visualize function-related motion information. We modify existing X-ray imaging methods to provide four images without increasing the necessary measurement time or radiation dose. The most important of these images is a new "kinetic" image that represents motions inside the object or living body. The motion-based contrast of the kinetic image can help visualize details that were not accessible before. The broad range of the movements and high sensitivity of the method are illustrated by imaging the mechanics of a working clock and the chest of a living African clawed frog (Xenopus laevis). The heart, valves, aorta, and lungs of the frog are clearly visualized in spite of the low soft tissue contrast of the animal. The new technology also reconstructs a "static" image similar to the existing conventional X-ray image. The static image shows practically the same information as the conventional image. The new technology presents two more images which show the point-wise errors of the static and kinetic images. This technique gives a better estimation of errors than present methods because it is based entirely on measured data. The new technology could be used in imaging cardiopulmonary movements, nondestructive testing, or port security screening.
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47
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Budán F, Kovács N, Engelmann P, Horváth I, Veres DS, Németh P, Szigeti K, Máthé D. Longitudinal in vivo MR imaging of live earthworms. ACTA ACUST UNITED AC 2014; 321:479-89. [PMID: 25059556 DOI: 10.1002/jez.1880] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 06/14/2014] [Accepted: 06/14/2014] [Indexed: 11/08/2022]
Abstract
Earthworm (Oligochaeta, Lumbricidae) species are used widely in eco-toxicological tests especially with contaminated soils. These long-term tests are reliable, but a high sample size is needed. Magnetic resonance imaging (MRI) can produce fast, robust, sensitive, and longitudinal morphological results using a small sample size. Performing longitudinal in vivo examinations of earthworms using MRI requires the need for anesthetics to completely avoid earthworm's moving. Our goal was to develop a simple and non-invasive method to anesthetize earthworms for in vivo longitudinal imaging studies. We investigated a number of different anesthesia methods and found that propan-2-ol and its vapor was optimal. We used a commercial sequential nanoScan® PET/MRI system (Mediso Ltd, Hungary, Budapest) to explore feasibility of MR imaging in immobilized earthworms. It was possible to visualize via micro MRI the brain, gastrointestinal tract, seminal vesicles, calciferous gland (Morren gland), and main blood vessels of the circulatory system. Our findings show the possibilities to examine changes in morphology using MRI of certain organs using a reversible, long-term immobilization method.
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Affiliation(s)
- Ferenc Budán
- CROmed, Translational Research Centers, Budapest, Baross utca, Hungary
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Szigeti K, Trummer B, Lal D, Doody R, Yan L, Liu S, Ma C. Genome-Wide Scan for Copy Number Variation Association with Biomarker Quantitative Trait Loci in Aging. EUR J INFLAMM 2014. [DOI: 10.1177/1721727x1401200206] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Biomarkers are emerging as important tools in the detection and monitoring of various diseases. A major limitation and challenge to effectively utilize biomarker signals is the limited understanding of factors contributing to their variance. As genetic variation is a major contributor to phenotypic variation, exploring genetic contributions is of great importance. Copy number variants (CNVs) offer an alternative genomic framework to understand contributions to phenotypic variance. A copy-number variation genome-wide association study was performed using 116 serum inflammatory biomarkers as quantitative trait in elderly normal controls to test the hypothesis that CNVs contribute to the phenotypic heterogeneity of serum biomarkers. Three chromosomal regions were associated with four biomarkers in trans. Transforming growth factor alpha (TG-alpha) serum levels were associated with CNV dosage at chr11:5,788 kb, soluble levels of receptor for advanced glycation endproducts (sRAGE) was associated with CNV dosage at chr8:40,183 kb and both thrombospondin-1 and tissue inhibitor of metalloproteinase 1 (TIMP-1) were associated with CNV dosage at chr11:18,961 kb. The CNV at chr11:5,788 kb harbors 2 olfactory genes and the introns of Tripartite motif-containing (TRIM) gene cluster TRIM5&22 while the CNV at chr11:18,961 includes the Mas-related G-protein coupled receptor member X1. These trans associations may identify novel relationships in the relevant pathways and suggest that genetic variation can contribute to biomarker levels. The detected trans-association between MRGPRX1 and thrombospondin-1/TIMP-1 could implicate a novel pathway between pain/itching and inflammation. Cataloguing all genetic variants with an effect on biomarkers will serve as a tool to interpret epidemiological studies and establish causal relationships through Mendelian randomization.
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Affiliation(s)
- K. Szigeti
- Department of Neurology, University at Buffalo, SUNY, Buffalo, NY, USA
| | - B. Trummer
- Department of Neurology, University at Buffalo, SUNY, Buffalo, NY, USA
| | - D. Lal
- Department of Neurology, University at Buffalo, SUNY, Buffalo, NY, USA
| | - R.S. Doody
- Alzheimer's Disease and Memory Disorders Center, Department of Neurology, Baylor College of Medicine, Houston, TX, USA
| | - L. Yan
- Department of Bioinformatics, University at Buffalo, SUNY, Buffalo, NY, USA
| | - S. Liu
- Roswell Park Cancer Institute, Buffalo, NY, USA
| | - C. Ma
- Department of Bioinformatics, University at Buffalo, SUNY, Buffalo, NY, USA
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Fülöp A, Szijártó A, Harsányi L, Budai A, Pekli D, Korsós D, Horváth I, Kovács N, Karlinger K, Máthé D, Szigeti K. Demonstration of metabolic and cellular effects of portal vein ligation using multi-modal PET/MRI measurements in healthy rat liver. PLoS One 2014; 9:e90760. [PMID: 24599299 PMCID: PMC3944348 DOI: 10.1371/journal.pone.0090760] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 02/03/2014] [Indexed: 01/07/2023] Open
Abstract
Objectives In the early recognition of portal vein ligation (PVL) induced tumor progression, positron emission tomography and magnetic resonance imaging (PET/MRI) could improve diagnostic accuracy of conventionally used methods. It is unknown how PVL affects metabolic patterns of tumor free hepatic tissues. The aim of this preliminary study is to evaluate the effect of PVL on glucose metabolism, using PET/MRI imaging in healthy rat liver. Materials and Methods Male Wistar rats (n = 30) underwent PVL. 2-deoxy-2-(18F)fluoro-D-glucose (FDG) PET/MRI imaging (nanoScan PET/MRI) and morphological/histological examination were performed before (Day 0) and 1, 2, 3, and 7 days after PVL. Dynamic PET data were collected and the standardized uptake values (SUV) for ligated and non-ligated liver lobes were calculated in relation to cardiac left ventricle (SUVVOI/SUVCLV) and mean liver SUV (SUVVOI/SUVLiver). Results PVL induced atrophy of ligated lobes, while non-ligated liver tissue showed compensatory hypertrophy. Dynamic PET scan revealed altered FDG kinetics in both ligated and non-ligated liver lobes. SUVVOI/SUVCLV significantly increased in both groups of lobes, with a maximal value at the 2nd postoperative day and returned near to the baseline 7 days after the ligation. After PVL, ligated liver lobes showed significantly higher tracer uptake compared to the non-ligated lobes (significantly higher SUVVOI/SUVLiver values were observed at postoperative day 1, 2 and 3). The homogenous tracer biodistribution observed before PVL reappeared by 7th postoperative day. Conclusion The observed alterations in FDG uptake dynamics should be taken into account during the assessment of PET data until the PVL induced atrophic and regenerative processes are completed.
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Affiliation(s)
- András Fülöp
- 1st Department of Surgery, Semmelweis University, Budapest, Hungary
- * E-mail:
| | - Attila Szijártó
- 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - László Harsányi
- 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - András Budai
- 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Damján Pekli
- 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Diána Korsós
- 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Noémi Kovács
- CROmed Translational Research Centers, Budapest, Hungary
| | - Kinga Karlinger
- Department of Radiology and Oncotherapy, Semmelweis University, Budapest, Hungary
| | - Domokos Máthé
- CROmed Translational Research Centers, Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
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50
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Cunha L, Szigeti K, Mathé D, Metello LF. The role of molecular imaging in modern drug development. Drug Discov Today 2014; 19:936-48. [PMID: 24434047 DOI: 10.1016/j.drudis.2014.01.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 11/30/2013] [Accepted: 01/07/2014] [Indexed: 12/28/2022]
Abstract
Drug development represents a highly complex, inefficient and costly process. Over the past decade, the widespread use of nuclear imaging, owing to its functional and molecular nature, has proven to be a determinant in improving the efficiency in selecting the candidate drugs that should either be abandoned or moved forward into clinical trials. This helps not only with the development of safer and effective drugs but also with the shortening of time-to-market. The modern concept and future trends concerning molecular imaging will assumedly be hybrid or multimodality imaging, including combinations between high sensitivity and functional (molecular) modalities with high spatial resolution and morphological techniques.
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Affiliation(s)
- Lídia Cunha
- Nuclear Medicine Department, High Institute for Allied Health Technologies, Polytechnic Institute of Porto (ESTSP.IPP), Vila Nova de Gaia 4400-330, Portugal
| | - Krisztián Szigeti
- Nanobiotechnology &In Vivo Imaging Center, Semmelweis University, Budapest H-1094, Hungary
| | - Domokos Mathé
- CROmed Ltd, H-1047 Budapest Baross u. 91-95, Budapest, Hungary
| | - Luís F Metello
- Nuclear Medicine Department, High Institute for Allied Health Technologies, Polytechnic Institute of Porto (ESTSP.IPP), Vila Nova de Gaia 4400-330, Portugal; IsoPor, SA, Porto, Portugal.
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