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Ostheim P, Tichý A, Badie C, Davidkova M, Kultova G, Stastna MM, Sirak I, Stewart S, Schwanke D, Kasper M, Ghandhi SA, Amundson SA, Bäumler W, Stroszczynski C, Port M, Abend M. Applicability of Gene Expression in Saliva as an Alternative to Blood for Biodosimetry and Prediction of Radiation-induced Health Effects. Radiat Res 2024; 201:523-534. [PMID: 38499035 DOI: 10.1667/rade-23-00176.1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 12/01/2023] [Indexed: 03/20/2024]
Abstract
As the great majority of gene expression (GE) biodosimetry studies have been performed using blood as the preferred source of tissue, searching for simple and less-invasive sampling methods is important when considering biodosimetry approaches. Knowing that whole saliva contains an ultrafiltrate of blood and white blood cells, it is expected that the findings in blood can also be found in saliva. This human in vivo study aims to examine radiation-induced GE changes in saliva for biodosimetry purposes and to predict radiation-induced disease, which is yet poorly characterized. Furthermore, we examined whether transcriptional biomarkers in blood can also be found equivalently in saliva. Saliva and blood samples were collected in parallel from radiotherapy (RT) treated patients who suffered from head and neck cancer (n = 8) undergoing fractioned partial-body irradiations (1.8 Gy/fraction and 50-70 Gy total dose). Samples were taken 12-24 h before first irradiation and ideally 24 and 48 h, as well as 5 weeks after radiotherapy onset. Due to the low quality and quantity of isolated RNA samples from one patient, they had to be excluded from further analysis, leaving a total of 24 saliva and 24 blood samples from 7 patients eligible for analysis. Using qRT-PCR, 18S rRNA and 16S rRNA (the ratio being a surrogate for the relative human RNA/bacterial burden), four housekeeping genes and nine mRNAs previously identified as radiation responsive in blood-based studies were detected. Significant GE associations with absorbed dose were found for five genes and after the 2nd radiotherapy fraction, shown by, e.g., the increase of CDKN1A (2.0 fold, P = 0.017) and FDXR (1.9 fold increased, P = 0.002). After the 25th radiotherapy fraction, however, all four genes (FDXR, DDB2, POU2AF1, WNT3) predicting ARS (acute radiation syndrome) severity, as well as further genes (including CCNG1 [median-fold change (FC) = 0.3, P = 0.013], and GADD45A (median-FC = 0.3, P = 0.031)) appeared significantly downregulated (FC = 0.3, P = 0.01-0.03). A significant association of CCNG1, POU2AF1, HPRT1, and WNT3 (P = 0.006-0.04) with acute or late radiotoxicity could be shown before the onset of these clinical outcomes. In an established set of four genes predicting acute health effects in blood, the response in saliva samples was similar to the expected up- (FDXR, DDB2) or downregulation (POU2AF1, WNT3) in blood for up to 71% of the measurements. Comparing GE responses (PHPT1, CCNG1, CDKN1A, GADD45A, SESN1) in saliva and blood samples, there was a significant linear association between saliva and blood response of CDKN1A (R2 = 0.60, P = 0.0004). However, the GE pattern of other genes differed between saliva and blood. In summary, the current human in vivo study, (I) reveals significant radiation-induced GE associations of five transcriptional biomarkers in salivary samples, (II) suggests genes predicting diverse clinical outcomes such as acute and late radiotoxicity as well as ARS severity, and (III) supports the view that blood-based GE response can be reflected in saliva samples, indicating that saliva is a "mirror of the body" for certain but not all genes and, thus, studies for each gene of interest in blood are required for saliva.
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Affiliation(s)
- P Ostheim
- Bundeswehr Institute of Radiobiology, Munich, Germany
- Department of Radiology, University Hospital Regensburg, Regensburg, Germany
| | - A Tichý
- Department of Radiobiology, Faculty of Military Health Sciences in Hradec Kralove, University of Defence in Brno, Czech Republic
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - C Badie
- UK Health Security Agency, Radiation, Chemical and Environmental Hazards Division, Oxfordshire, United Kingdom
| | - M Davidkova
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
| | - G Kultova
- Department of Radiobiology, Faculty of Military Health Sciences in Hradec Kralove, University of Defence in Brno, Czech Republic
| | - M Markova Stastna
- Institute for Hematology and Blood Transfusion, Hospital Na Bulovce, Prague, Czech Republic
| | - I Sirak
- Department of Oncology and Radiotherapy, University Hospital and Medical Faculty in Hradec Kralove, Czech Republic
| | - S Stewart
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - D Schwanke
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - M Kasper
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - S A Ghandhi
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York, 10032
| | - S A Amundson
- Center for Radiological Research, Columbia University Irving Medical Center, New York, New York, 10032
| | - W Bäumler
- Department of Radiology, University Hospital Regensburg, Regensburg, Germany
| | - C Stroszczynski
- Department of Radiology, University Hospital Regensburg, Regensburg, Germany
| | - M Port
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - M Abend
- Bundeswehr Institute of Radiobiology, Munich, Germany
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Neupane T, Galanakou P, Shang C, Leventouri T, Kasper M, Muhammad W. A novel Monte Carlo (MC) dose model for small MLC fields of the cyberknife ® M6 TM radiosurgery system using the EGSnrc. J Appl Clin Med Phys 2023; 24:e13880. [PMID: 36651219 PMCID: PMC10113689 DOI: 10.1002/acm2.13880] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 11/22/2022] [Accepted: 12/08/2022] [Indexed: 01/19/2023] Open
Abstract
The multi-leaf collimator (MLC)-equipped CyberKnife® M6 radiosurgery system (CKM6) (Accuray Inc., Sunnyvale, CA) has been increasingly employed for stereotactic radiosurgery (SRS) to treat relatively small lesions. However, achieving an accurate dose distribution in such cases is usually challenging due to the combination of numerous small fields ≤ (30 × 30) mm2 . In this study, we developed a new Monte Carlo (MC) dose model for the CKM6 system using the EGSnrc to investigate dose variations in the small fields. The dose model was verified for the static MLC fields ranging from (53.8 × 53.9) to (7.6 × 7.7) mm2 at 800 mm source to axis distance in a water phantom, based on the computed doses of Accuray Precision® (Accuray Inc.) treatment planning system (TPS). We achieved a statistical uncertainty of ≤4% by simulating 30-50 million incident particles/histories. Then, the treatment plans were created for the same fields in the TPS, and the corresponding measurements were performed with MapCHECK2 (Sun Nuclear Corporation), a standard device for patient-specific quality assurance (PSQA). Results of the MC simulations, TPS, and MapCHECK2 measurements were inter-compared. An overall difference in dosimetric parameters such as profiles, tissue maximum ratio (TMR), and output factors (OF) between the MC simulations and the TPS results was found ≤3% for (53.8 × 53.9-15.4 × 15.4) mm2 MLC fields, and it rose to 4.5% for the smallest (7.6 mm × 7.7 mm) MLC field. The MapCHECK2 results showed a deviation ranging from -1.5% to + 4.5% compared to the TPS results, whereas the deviation was within ±2.5% compared with the MC results. Overall, our MC dose model for the CKM6 system showed better agreement with measurements and it could serve as a secondary dose verification tool for the patient-specific QA in small fields.
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Affiliation(s)
- Taindra Neupane
- Department of Physics, Florida Atlantic University, Boca Raton, Florida, USA
| | - Panagiota Galanakou
- Department of Physics, Florida Atlantic University, Boca Raton, Florida, USA
| | - Charles Shang
- Department of Physics, Florida Atlantic University, Boca Raton, Florida, USA.,South Florida Proton Therapy Institute, Delray Beach, Florida, USA
| | - Theodora Leventouri
- Department of Physics, Florida Atlantic University, Boca Raton, Florida, USA
| | - Michael Kasper
- Lynn Cancer Institute, Boca Raton Regional Hospital, Baptist Health South, Boca Raton, Florida, USA
| | - Wazir Muhammad
- Department of Physics, Florida Atlantic University, Boca Raton, Florida, USA
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Pereira D, Kirk T, Mavros A, Rognoni E, O’Toole E, Kasper M, Sequeira I. 603 Dissecting the role of fibroblasts in homeostasis and wound healing of the oral mucosa. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.620] [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: 11/19/2022]
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Cockburn K, Annusver K, Gonzalez D, Ganesan S, May D, Kawaguchi K, Kasper M, Greco V. LB1016 Gradual differentiation uncoupled from cell cycle exit generates heterogeneity in the epidermal stem cell layer. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.1044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hoste E, Lecomte K, Annusver K, Vandamme N, Roels J, Kasper M, Van Loo G. 206 OTULIN maintains skin homeostasis by controlling keratinocyte death and stem cell identity. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wagner K, Boehle A, Pathak P, Kasper M, Arsenault R, Jakob G, Käufl U, Leveratto S, Maire AL, Pantin E, Siebenmorgen R, Zins G, Absil O, Ageorges N, Apai D, Carlotti A, Choquet É, Delacroix C, Dohlen K, Duhoux P, Forsberg P, Fuenteseca E, Gutruf S, Guyon O, Huby E, Kampf D, Karlsson M, Kervella P, Kirchbauer JP, Klupar P, Kolb J, Mawet D, N'Diaye M, de Xivry GO, Quanz SP, Reutlinger A, Ruane G, Riquelme M, Soenke C, Sterzik M, Vigan A, de Zeeuw T. Author Correction: Imaging low-mass planets within the habitable zone of α Centauri. Nat Commun 2021; 12:2651. [PMID: 33953194 PMCID: PMC8099858 DOI: 10.1038/s41467-021-23145-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- K Wagner
- Dept. of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ, USA. .,NASA Nexus for Exoplanet System Science, Earths in Other Solar Systems Team, Tucson, AZ, USA.
| | - A Boehle
- Institute for Particle Physics and Astrophysics, ETH Zurich, Zürich, Switzerland
| | - P Pathak
- European Southern Observatory, Garching bei München, Germany
| | - M Kasper
- European Southern Observatory, Garching bei München, Germany
| | - R Arsenault
- European Southern Observatory, Garching bei München, Germany
| | - G Jakob
- European Southern Observatory, Garching bei München, Germany
| | - U Käufl
- European Southern Observatory, Garching bei München, Germany
| | - S Leveratto
- European Southern Observatory, Garching bei München, Germany
| | - A-L Maire
- STAR Institute, Université de Liège, Liège, Belgium
| | - E Pantin
- AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, Gif-sur-Yvette, France
| | - R Siebenmorgen
- European Southern Observatory, Garching bei München, Germany
| | - G Zins
- European Southern Observatory, Garching bei München, Germany
| | - O Absil
- STAR Institute, Université de Liège, Liège, Belgium
| | - N Ageorges
- Kampf Telescope Optics, München, Germany
| | - D Apai
- Dept. of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ, USA.,NASA Nexus for Exoplanet System Science, Earths in Other Solar Systems Team, Tucson, AZ, USA.,Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - A Carlotti
- Univ. Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - É Choquet
- Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
| | - C Delacroix
- STAR Institute, Université de Liège, Liège, Belgium
| | - K Dohlen
- Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
| | - P Duhoux
- European Southern Observatory, Garching bei München, Germany
| | - P Forsberg
- Department of Materials Science and Engineering, Ångström Laboratory, Uppsala University, Uppsala, Sweden
| | - E Fuenteseca
- European Southern Observatory, Garching bei München, Germany
| | - S Gutruf
- Kampf Telescope Optics, München, Germany
| | - O Guyon
- Dept. of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ, USA.,Subaru Telescope, National Astronomical Observatory of Japan, National Institutes of Natural Sciences (NINS), Hilo, HI, USA.,The Breakthrough Initiatives, NASA Research Park, Moffett Field, CA, USA.,James C. Wyant College of Optical Sciences, University of Arizona, Tucson, AZ, USA
| | - E Huby
- LESIA, Observatoire de Paris, Meudon, France
| | - D Kampf
- Kampf Telescope Optics, München, Germany
| | - M Karlsson
- Department of Materials Science and Engineering, Ångström Laboratory, Uppsala University, Uppsala, Sweden
| | - P Kervella
- LESIA, Observatoire de Paris, Meudon, France
| | - J-P Kirchbauer
- European Southern Observatory, Garching bei München, Germany
| | - P Klupar
- The Breakthrough Initiatives, NASA Research Park, Moffett Field, CA, USA
| | - J Kolb
- European Southern Observatory, Garching bei München, Germany
| | - D Mawet
- California Institute of Technology, Pasadena, CA, USA
| | - M N'Diaye
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | | | - S P Quanz
- Institute for Particle Physics and Astrophysics, ETH Zurich, Zürich, Switzerland
| | | | - G Ruane
- California Institute of Technology, Pasadena, CA, USA.,Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - M Riquelme
- European Southern Observatory, Garching bei München, Germany
| | - C Soenke
- European Southern Observatory, Garching bei München, Germany
| | - M Sterzik
- European Southern Observatory, Garching bei München, Germany
| | - A Vigan
- Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
| | - T de Zeeuw
- European Southern Observatory, Garching bei München, Germany.,Sterrewacht Leiden, Leiden University, Leiden, The Netherlands.,Max Planck Institute for Extraterrestrial Physics, Garching, Germany
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Lichtenberger BM, Kasper M. Cellular heterogeneity and microenvironmental control of skin cancer. J Intern Med 2021; 289:614-628. [PMID: 32976658 DOI: 10.1111/joim.13177] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022]
Abstract
Healthy tissues harbour a surprisingly high number of cells that carry well-known cancer-causing mutations without impacting their physiological function. In recent years, strong evidence accumulated that the immediate environment of mutant cells profoundly impact their prospect of malignant progression. In this review, focusing on the skin, we investigate potential key mechanisms that ensure tissue homeostasis despite the presence of mutant cells, as well as critical factors that may nudge the balance from homeostasis to tumour formation. Functional in vivo studies and single-cell transcriptome analyses have revealed a tremendous cellular heterogeneity and plasticity within epidermal (stem) cells and their respective niches, revealing for example wild-type epithelial cells, fibroblasts or immune-cell subsets as critical in preventing cancer formation and malignant progression. It's the same cells, however, that can drive carcinogenesis. Therefore, understanding the abundance and molecular variation of cell types in health and disease, and how they interact and modulate the local signalling environment will thus be key for new therapeutic avenues in our battle against cancer.
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Affiliation(s)
- B M Lichtenberger
- From the, Skin and Endothelium Research Division, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - M Kasper
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
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8
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Jarzebska N, Karetnikova ES, Markov AG, Kasper M, Rodionov RN, Spieth PM. Scarred Lung. An Update on Radiation-Induced Pulmonary Fibrosis. Front Med (Lausanne) 2021; 7:585756. [PMID: 33521012 PMCID: PMC7843914 DOI: 10.3389/fmed.2020.585756] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 12/17/2020] [Indexed: 12/18/2022] Open
Abstract
Radiation-induced pulmonary fibrosis is a common severe long-time complication of radiation therapy for tumors of the thorax. Current therapeutic options used in the clinic include only supportive managements strategies, such as anti-inflammatory treatment using steroids, their efficacy, however, is far from being satisfactory. Recent studies have demonstrated that the development of lung fibrosis is a dynamic and complex process, involving the release of reactive oxygen species, activation of Toll-like receptors, recruitment of inflammatory cells, excessive production of nitric oxide and production of collagen by activated myofibroblasts. In this review we summarized the current state of knowledge on the pathophysiological processes leading to the development of lung fibrosis and we also discussed the possible treatment options.
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Affiliation(s)
- Natalia Jarzebska
- Department of Anesthesiology and Critical Care Medicine, University Hospital Dresden, Technische Universität Dresden, Dresden, Germany
- Division of Angiology, Department of Internal Medicine III, University Center for Vascular Medicine, University Hospital Dresden, Technische Universität Dresden, Dresden, Germany
| | | | - Alexander G. Markov
- Department of General Physiology, Saint-Petersburg State University, Saint Petersburg, Russia
| | - Michael Kasper
- Institute of Anatomy, Technische Universität Dresden, Dresden, Germany
| | - Roman N. Rodionov
- Division of Angiology, Department of Internal Medicine III, University Center for Vascular Medicine, University Hospital Dresden, Technische Universität Dresden, Dresden, Germany
| | - Peter M. Spieth
- Department of Anesthesiology and Critical Care Medicine, University Hospital Dresden, Technische Universität Dresden, Dresden, Germany
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9
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Flügel M, Waldmann T, Kasper M, Wohlfahrt-Mehrens M. Detection of Copper Deposition on Anodes of Over-Discharged Lithium Ion Cells by GD-OES Depth Profiling. Chemphyschem 2020; 21:2047-2050. [PMID: 32692859 DOI: 10.1002/cphc.202000333] [Citation(s) in RCA: 4] [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: 04/21/2020] [Revised: 07/10/2020] [Indexed: 11/08/2022]
Abstract
A method based on glow discharge optical emission spectroscopy (GD-OES) depth profiling is developed to detect copper deposition on graphite electrodes for the first time. Commercial 18650 cells with graphite anodes were subject to Cu dissolution by over-discharge to 0 V. On a first approach, the depth profiles for Cu show significant differences for over-discharged cells compared to a baseline graphite electrode from cells discharged to the end-of-discharge voltage. An accumulation of Cu is found on the anode surface by GD-OES, which is consistent with SEM and EDX. The trend of the total Cu amount is compared with ICP-OES measurements.
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Affiliation(s)
- Marius Flügel
- ZSW - Zentrum für Sonnenenergie-und Wasserstoff-Forschung, Baden-Württemberg, Helmholtzstrasse 8, D-89081, Ulm, Germany
| | - Thomas Waldmann
- ZSW - Zentrum für Sonnenenergie-und Wasserstoff-Forschung, Baden-Württemberg, Helmholtzstrasse 8, D-89081, Ulm, Germany
| | - Michael Kasper
- ZSW - Zentrum für Sonnenenergie-und Wasserstoff-Forschung, Baden-Württemberg, Helmholtzstrasse 8, D-89081, Ulm, Germany
| | - Margret Wohlfahrt-Mehrens
- ZSW - Zentrum für Sonnenenergie-und Wasserstoff-Forschung, Baden-Württemberg, Helmholtzstrasse 8, D-89081, Ulm, Germany
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10
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Lee M, Shannon J, Jain V, Joost S, Kasper M, Corcoran D, Gregory S, MacLeod A. 251 Skin epidermal keratinocyte differentiation-associated processes regulate homeostatic antiviral protein expression. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Bauer D, Kasper M, Walscheid K, Koch JM, Müther PS, Kirchhof B, Heiligenhaus A, Heinz C. Alteration of MCP-1 and MMP-9 in Aqueous Humor Is Associated with Secondary Glaucoma in Fuchs Uveitis Syndrome. Ocul Immunol Inflamm 2019; 28:688-698. [PMID: 31268809 DOI: 10.1080/09273948.2019.1609049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 12/14/2022]
Abstract
PURPOSE To analyze changes in concentrations of pro- or anti-inflammatory cytokines, chemokines, or metalloproteinases (MMP) in the aqueous humor (AH) in Fuchs uveitis syndrome (FUS) patients with (FUSwG) or without (FUSwoG) secondary glaucoma. METHODS AH samples were collected from 43 eyes of Caucasian subjects (FUSwoG: n = 11; FUSwG: n = 8; control eyes: n = 24). Concentrations of IL-8, MCP-1, MMP-1,-2,-3,-9, SAA, TGFß-1,-2,-3, and TNF-α were measured by multiplex bead assay analysis. RESULTS Compared with the control group, levels of IL-8, MCP-1, MMP-3, and MMP-9 in the AH were significantly increased in FUSwG and FUSwoG patients. In contrast to FUSwoG patients, MCP-1 and MMP-9 level were lower in FUSwG, while expression of MMP-2, MMP-3, and TGFβ-1 was increased. CONCLUSION In our experiments, glaucoma in FUS patients was associated with low levels of MCP-1 and MMP-9 in the AH, while expression of MMP-2, MMP-3, and TGFβ-1 increased. The alteration in these molecular patterns may contribute to the development of glaucoma in FUS.
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Affiliation(s)
- D Bauer
- Department of Ophthalmology and Ophtha-Lab, St. Franziskus Hospital Münster , Münster, Germany
| | - M Kasper
- Department of Ophthalmology and Ophtha-Lab, St. Franziskus Hospital Münster , Münster, Germany
| | - K Walscheid
- Department of Ophthalmology and Ophtha-Lab, St. Franziskus Hospital Münster , Münster, Germany
| | - J M Koch
- Department of Ophthalmology and Ophtha-Lab, St. Franziskus Hospital Münster , Münster, Germany
| | - P S Müther
- Center for Ophthalmology, University Cologne , Köln, Germany
| | - B Kirchhof
- Center for Ophthalmology, University Cologne , Köln, Germany
| | - A Heiligenhaus
- Department of Ophthalmology and Ophtha-Lab, St. Franziskus Hospital Münster , Münster, Germany.,Center for Ophthalmology, University of Duisburg-Essen , Essen, Germany
| | - C Heinz
- Department of Ophthalmology and Ophtha-Lab, St. Franziskus Hospital Münster , Münster, Germany.,Center for Ophthalmology, University of Duisburg-Essen , Essen, Germany
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12
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Mayer A, Burtscher H, Loretz S, Kasper M, Czerwinski J. High air pollution in vehicle cabins due to traffic nanoparticle emission exposure and a solution for in-use vehicles. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/421/3/032018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Kiss T, Silva PL, Huhle R, Moraes L, Santos RS, Felix NS, Santos CL, Morales MM, Capelozzi VL, Kasper M, Pelosi P, Gama de Abreu M, Rocco PRM. Comparison of different degrees of variability in tidal volume to prevent deterioration of respiratory system elastance in experimental acute lung inflammation. Br J Anaesth 2018; 116:708-15. [PMID: 27106975 DOI: 10.1093/bja/aew093] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2015] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Variable ventilation improves respiratory function, but it is not known whether the amount of variability in tidal volume (VT) can be reduced in recruited lungs without a deterioration of respiratory system elastance. METHODS Acute lung inflammation was induced by intratracheal instillation of lipopolysaccharide in 35 Wistar rats. Twenty-eight animals were anaesthetized and ventilated in volume-controlled mode. Lungs were recruited by random variation of VT (mean 6 ml kg(-1), coefficient of variation 30%, normal distribution) for 30 min. Animals were randomly assigned to different amounts of VT variability (n=7 for 90 min per group): 30, 15, 7.5, or 0%. Lung function, diffuse alveolar damage, and gene expression of biological markers associated with cell mechanical stress, inflammation, and fibrogenesis were assessed. Seven animals were not ventilated and served as controls for post-mortem analyses. RESULTS A VT variability of 30%, but not 15, 7.5, or 0%, prevented deterioration of respiratory system elastance [Mean (SD) -7.5 (8.7%), P<0.05; 21.1 (9.6%), P<0.05; 43.3 (25.9), P<0.05; and 41.2 (16.4), P<0.05, respectively]. Diffuse alveolar damage was lower with a VT variability of 30% than with 0% and without ventilation, because of reduced oedema and haemorrhage. A VT variability of 30, 15, or 7.5% reduced the gene expression of amphiregulin, cytokine-induced neutrophil chemoattractant-1, and tumour necrosis factor α compared with a VT variability of 0%. CONCLUSIONS In this model of acute lung inflammation, a VT variability of 30%, compared with 15 and 7.5%, was necessary to avoid deterioration of respiratory system elastance and was not associated with lung histological damage.
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Affiliation(s)
- T Kiss
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - P L Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - R Huhle
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - L Moraes
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - R S Santos
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - N S Felix
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - C L Santos
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - M M Morales
- Laboratory of Cellular and Molecular Physiology, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
| | - V L Capelozzi
- Department of Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - M Kasper
- Institute of Anatomy, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - P Pelosi
- Department of Surgical Sciences and Integrated Diagnostics, IRCCS AOU San Martino-IST, University of Genoa, Genoa, Italy
| | - M Gama de Abreu
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - P R M Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil
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14
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Güldner A, Huhle R, Beda A, Kiss T, Bluth T, Rentzsch I, Kerber S, Carvalho NC, Kasper M, Pelosi P, de Abreu MG. Periodic Fluctuation of Tidal Volumes Further Improves Variable Ventilation in Experimental Acute Respiratory Distress Syndrome. Front Physiol 2018; 9:905. [PMID: 30050467 PMCID: PMC6052143 DOI: 10.3389/fphys.2018.00905] [Citation(s) in RCA: 7] [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: 04/23/2018] [Accepted: 06/21/2018] [Indexed: 11/28/2022] Open
Abstract
In experimental acute respiratory distress syndrome (ARDS), random variation of tidal volumes (VT) during volume controlled ventilation improves gas exchange and respiratory system mechanics (so-called stochastic resonance hypothesis). It is unknown whether those positive effects may be further enhanced by periodic VT fluctuation at distinct frequencies, also known as deterministic frequency resonance. We hypothesized that the positive effects of variable ventilation on lung function may be further amplified by periodic VT fluctuation at specific frequencies. In anesthetized and mechanically ventilated pigs, severe ARDS was induced by saline lung lavage and injurious VT (double-hit model). Animals were then randomly assigned to 6 h of protective ventilation with one of four VT patterns: (1) random variation of VT (WN); (2) P04, main VT frequency of 0.13 Hz; (3) P10, main VT frequency of 0.05 Hz; (4) VCV, conventional non-variable volume controlled ventilation. In groups with variable VT, the coefficient of variation was identical (30%). We assessed lung mechanics and gas exchange, and determined lung histology and inflammation. Compared to VCV, WN, P04, and P10 resulted in lower respiratory system elastance (63 ± 13 cm H2O/L vs. 50 ± 14 cm H2O/L, 48.4 ± 21 cm H2O/L, and 45.1 ± 5.9 cm H2O/L respectively, P < 0.05 all), but only P10 improved PaO2/FIO2 after 6 h of ventilation (318 ± 96 vs. 445 ± 110 mm Hg, P < 0.05). Cycle-by-cycle analysis of lung mechanics suggested intertidal recruitment/de-recruitment in P10. Lung histologic damage and inflammation did not differ among groups. In this experimental model of severe ARDS, periodic VT fluctuation at a frequency of 0.05 Hz improved oxygenation during variable ventilation, suggesting that deterministic resonance adds further benefit to variable ventilation.
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Affiliation(s)
- Andreas Güldner
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Robert Huhle
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Alessandro Beda
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,Departamento de Engenharia Eletrônica, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Thomas Kiss
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Thomas Bluth
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Ines Rentzsch
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,Department of Orthodontics, Technische Universität Dresden, Dresden, Germany
| | - Sarah Kerber
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Nadja C Carvalho
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,Departamento de Engenharia Eletrônica, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Michael Kasper
- Institute of Anatomy, Technische Universität Dresden, Dresden, Germany
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics, IRCCS San Martino IST, University of Genoa, Genoa, Italy
| | - Marcelo G de Abreu
- Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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15
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Roedel M, Ravens U, Kasper M, Wirth MP, Jepps TA, Propping S. Contractile responses in intact and mucosa-denuded human ureter—a comparison with urinary bladder detrusor preparations. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:773-782. [DOI: 10.1007/s00210-018-1505-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 04/17/2018] [Indexed: 11/28/2022]
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16
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Chiu A, Shumaker K, Del Corral C, George B, Kasper M, Elie-Turenne MC, Jois P, Dipsia D, Donnelly M, Sidow L, Chau C, Ash A. Corrigendum to "Remote management of low- to intermediate-risk chest pain: a case series" (Am J Emerg Med [2017]). Am J Emerg Med 2017; 36:339. [PMID: 29108799 DOI: 10.1016/j.ajem.2017.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
| | | | - Christopher Del Corral
- Ross Medical Corporation, Saddle River, NJ 07458, USA; Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, USA
| | - Blessy George
- Ross Medical Corporation, Saddle River, NJ 07458, USA; Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, USA
| | - Michael Kasper
- Ross Medical Corporation, Saddle River, NJ 07458, USA; Saddle River Internists, Saddle River, NJ 07458, USA
| | | | - Preeti Jois
- Ross Medical Corporation, Saddle River, NJ 07458, USA; University of Florida, Department of Emergency Medicine, Gainesville, FL 32611, USA
| | - Daniel Dipsia
- Ross Medical Corporation, Saddle River, NJ 07458, USA; Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, USA
| | | | - Lauren Sidow
- Ross Medical Corporation, Saddle River, NJ 07458, USA
| | - Caroline Chau
- Ross Medical Corporation, Saddle River, NJ 07458, USA
| | - Adam Ash
- Ross Medical Corporation, Saddle River, NJ 07458, USA.
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17
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Bohle W, Kasper M, Zoller WG. Prognostic relevance of serial endoscopic ultrasound after chemoradiation in esophageal cancer. Dis Esophagus 2017; 30:1-8. [PMID: 28859390 DOI: 10.1093/dote/dox065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 05/18/2017] [Indexed: 12/11/2022]
Abstract
The objective of this study is the feasibility of sequential endoscopic and endosonographic measurement of locoregional tumor load for the prediction of tumor recurrence in patients after neoadjuvant or definitive chemoradiotherapy, treated in curative intent for locally advanced esophageal carcinoma. In 67 patients with esophageal cancer, serial endoscopic ultrasound was performed before and after neoadjuvant (25) or definitive (42) chemoradiotherapy. Rate of complete endoscopic and endosonographic tumor response, reduction in tumor length or circumferential tumorous extension, maximal tumor thickness, lymph node size, and endosonographic uT- and uN-stage shift was measured. Results were correlated with tumor recurrence rate. After chemoradiotherapy, endosonography revealed a complete response of the primary tumor in 27 patients, and complete resolution of suspicious lymph nodes in 24 patients. According to uTN-stage, 43 patients showed a therapeutic response, with stage shift to a lower tumor stage. In patients with macroscopic residual disease, mean tumor thickness decreased from 13 to 9 mm, with nine patients presenting with a decrease of >50%. Mean tumor length decreased from 5.6 to 4.6 cm, with 10 patients showing a decrease of >50%. Mean lymph node size decreased from 14.5 to 12 mm, with four patients having a reduction in size of >50%. Tumor response was generally more pronounced after definitive than after neoadjuvant chemoradiotherapy. During follow-up, 33 patients developed a tumor recurrence. None of the endoscopic and endosonographic parameter analyzed was predictive for patient's prognosis, irrespective of the kind of chemoradiotherapy (neoadjuvant or definitive). Sequential measurement of locoregional tumor load with endoscopic ultrasound before and after chemoradiotherapy is not suitable for the prediction of tumor recurrence risk.
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18
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Chiu A, Kasper M, Rimmer J, Donnelly M, Chen Y, Chau C, Sidow L, Ash A. Remote Management of Atrial Fibrillation: A Case Report. Clin Pract Cases Emerg Med 2017; 1:242-245. [PMID: 29849299 PMCID: PMC5965180 DOI: 10.5811/cpcem.2017.4.33539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/24/2017] [Accepted: 04/19/2017] [Indexed: 11/11/2022] Open
Abstract
We report a case of new-onset atrial fibrillation with rapid ventricular response in a 37-year-old male who presented to the emergency department. This patient was not admitted to the hospital or placed on observation, but rather placed on a cellular outpatient 12-lead telemetry (COTLT) device with emergency response capabilities and discharged home. We define a new modality that allows these patients to be managed via telemedicine and receive care similar to that which would be rendered in a hospital or observation unit.
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Affiliation(s)
- Alexander Chiu
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - Michael Kasper
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - John Rimmer
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - Meaghan Donnelly
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - Yangmin Chen
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - Caroline Chau
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - Lauren Sidow
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
| | - Adam Ash
- Rapid Outpatient Setting Stress (ROSS) Clinical Research Organization, Saddle River, New Jersey
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19
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Chiu A, Shumaker K, del Corral C, George B, Kasper M, Jois P, Dipsia D, Donnelly M, Sidow L, Chau C, Ash A. Remote management of low to intermediate risk chest pain: A case series. Am J Emerg Med 2017; 35:1147-1149. [DOI: 10.1016/j.ajem.2017.02.029] [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] [Received: 01/22/2017] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 10/20/2022] Open
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20
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Götz W, Kasper M, Nimtschke U. Priv.-Doz. Dr. med. Wolfgang Schwab, Dipl.-Stomatol. (1956–2016). Ann Anat 2017. [DOI: 10.1016/j.aanat.2016.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Likhacheva AO, Devlin PM, Shirvani SM, Barker CA, Beron P, Bhatnagar A, Doggett SW, Hochman L, Hsu C, Kasper M, Keisch M, Mutyala S, Prestidge B, Rodriguez Villalba S, Shukla V, Sundararaman S, Kamrava M. Skin surface brachytherapy: A survey of contemporary practice patterns. Brachytherapy 2016; 16:223-229. [PMID: 27908679 DOI: 10.1016/j.brachy.2016.10.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/14/2016] [Accepted: 10/21/2016] [Indexed: 12/13/2022]
Abstract
PURPOSE The aim of this study was to define current patterns of care among radiation oncologists who use skin surface brachytherapy for the treatment of cutaneous squamous cell carcinoma (cSCC) and basal cell carcinoma (BCC) in academic and community settings. METHODS AND MATERIALS A 30-question electronic survey was administered to clinician members of the American Brachytherapy Society. The respondents were asked to provide details regarding their clinical practice and their approach to skin surface brachytherapy. RESULTS A total of 16 surveys were returned. Among the respondents, aggregate experience varied from 8 to 1800 cases. Most preferred brachytherapy over external beam radiation because of shorter treatment course, conformality of treatment for irregular or curved targets, and shallow dose deposition. Of the total, 60% of respondents routinely estimated lesion depth via ultrasound before initiating treatment. Treatment margin on gross disease varied widely (range, 3-15 mm; median, 5 mm). Hypofractionation was the preferred dose schedule. Prescribed doses ranged from 30 Gy in five fractions to 64 Gy in 32 fractions (EQD2, 40 Gy-65 Gy). There was a tendency to increase the number of fractions for larger targets, although some used the same fractionation regardless of anatomic location or lesion size. There was no consensus on dosimetric constraints, and some respondents reported cases of severe toxicity, particularly when treating the pretibial skin. CONCLUSIONS This pattern of care study suggests that skin brachytherapy can be a convenient and safe tool for treatment of BCC and cSCC. Prospective trials and the development of expert consensus guidelines would be beneficial for optimizing skin surface brachytherapy and reducing practice variation.
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Affiliation(s)
- Anna O Likhacheva
- Department of Radiation Oncology, Banner MD Anderson Cancer Center, Gilbert, AZ.
| | - Phillip M Devlin
- Department of Radiation Oncology, Brigham and Women's Hospital, Boston, MA
| | - Shervin M Shirvani
- Department of Radiation Oncology, Banner MD Anderson Cancer Center, Gilbert, AZ
| | - Christopher A Barker
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Phillip Beron
- Department of Radiation Oncology, Ronald Reagan UCLA Medical Center UCLA Medical Center, Los Angeles, CA
| | - Ajay Bhatnagar
- Department of Radiation Oncology, 21st Century Oncology, Phoenix, AZ
| | | | - Lawrence Hochman
- Department of Radiation Oncology, Florida Cancer Affiliates, Trinity, FL
| | - Charles Hsu
- Department of Radiation Oncology, University of Arizona Cancer Center, Tucson, AZ
| | - Michael Kasper
- Department of Radiation Oncology, Boca Raton Regional Hospital, Boca Raton, FL
| | - Martin Keisch
- Department of Radiation Oncology, Cancer Healthcare Associated, Miami, FL
| | - Subhakar Mutyala
- Department of Radiation Oncology, The University of Arizona Cancer Center at Dignity Health St. Joseph's Hospital, Phoenix, AZ
| | - Bradley Prestidge
- Department of Radiation Oncology, Bon Secours Health System, Norfolk, VA
| | | | - Vershalee Shukla
- Department of Radiation Oncology, 21st Century Oncology, Phoenix, AZ
| | | | - Mitchell Kamrava
- Department of Radiation Oncology, Ronald Reagan UCLA Medical Center UCLA Medical Center, Los Angeles, CA
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22
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Vittorio TJ, Ahuja K, Kasper M, Turalic H, Tseng CH, Jorde UP, Gor C. Comparison of high- versus low-tissue affinity ACE-inhibitor treatment on circulating aldosterone levels in patients with chronic heart failure. J Renin Angiotensin Aldosterone Syst 2016; 8:200-4. [DOI: 10.3317/jraas.2007.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Introduction. Previous animal studies of chronic heart failure (CHF) suggest that angiotensin-converting enzyme (ACE) inhibitors of differing tissue avidity provide varying levels of renin-angiotensin system (RAS) suppression. Human studies have not consistently confirmed these animal findings. We hypothesised that production of circulating aldosterone (ALDO) would be suppressed to a greater extent in subjects treated with an ACE-inhibitor of higher tissue avidity. We randomised subjects with stable CHF to receive the low-tissue affinity ACE-inhibitor enalapril (ENAL) or the high-tissue affinity ACE-inhibitor trandolapril (TRAN), and assessed circulating ALDO levels at baseline and after eight weeks of treatment. Methods. Thirty clinically stable subjects with CHF and left ventricular ejection fraction (LVEF ) < 40% who were in a steady-state fluid balance were enrolled into a prospective, randomised double-blind trial. After a one month run-in period for standardisation to initial ACE-inhibition with ENAL, baseline circulating ALDO levels were measured and patients were randomised to receive ENAL 40 mg versus O TRAN 4 mg (or the maximally tolerated doses) for eight weeks. Final determination of ALDO levels were made at the end of the 8-week study period. Results. Baseline clinical characteristics including age, diabetes, LVEF, serum sodium, potassium and creatinine concentrations, and background medications were similar in both groups. We found no statistically significant difference in circulating ALDO levels between the ENAL and TRAN groups at the end of the 8-week study period. [ENAL (12.6 vs. 13.3 ng/dL);TRAN (12.5 vs. 14.5 ng/dL);p=NS]. Conclusion. We found no statistically significant difference in circulating ALDO levels between high- and low-tissue affinity ACE-inhibitor therapy. Further studies assessing ALDO production at the tissue level is warranted.
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Affiliation(s)
- Timothy J Vittorio
- Albert Einstein College of Medicine, Division of Cardiology, Bronx, New York, NY, USA,
| | - Kartikya Ahuja
- Albert Einstein College of Medicine, Division of Cardiology, Bronx, New York, NY, USA
| | - Michael Kasper
- New York University School of Medicine, Department of Medicine, New York, NY, USA
| | - Haris Turalic
- New York University School of Medicine, Department of Medicine, New York, NY, USA
| | - Chi-Hong Tseng
- New York University School of Medicine, Department of Medicine, New York, NY, USA
| | - Ulrich P Jorde
- Columbia University College of Physicians and Surgeons, Division of Cardiology, New Youk, NY, USA
| | - Chirayu Gor
- New York University School of Medicine, Department of Medicine, New York, NY, USA
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23
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Schettle S, Staley L, Schroeder S, Luckhardt A, Chillcott S, Kasper M, Bjelkengren J, Marchand C, Stulak J, Dunlay S. A 7 Center Review of Left Ventricular Assist Device (LVAD) Caregiver Perceptions. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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24
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Wirsdörfer F, de Leve S, Cappuccini F, Eldh T, Meyer AV, Gau E, Thompson LF, Chen NY, Karmouty-Quintana H, Fischer U, Kasper M, Klein D, Ritchey JW, Blackburn MR, Westendorf AM, Stuschke M, Jendrossek V. Extracellular Adenosine Production by ecto-5'-Nucleotidase (CD73) Enhances Radiation-Induced Lung Fibrosis. Cancer Res 2016; 76:3045-56. [PMID: 26921334 DOI: 10.1158/0008-5472.can-15-2310] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 02/21/2016] [Indexed: 01/10/2023]
Abstract
Radiation-induced pulmonary fibrosis is a severe side effect of thoracic irradiation, but its pathogenesis remains poorly understood and no effective treatment is available. In this study, we investigated the role of the extracellular adenosine as generated by the ecto-5'-nucleotidase CD73 in fibrosis development after thoracic irradiation. Exposure of wild-type C57BL/6 mice to a single dose (15 Gray) of whole thorax irradiation triggered a progressive increase in CD73 activity in the lung between 3 and 30 weeks postirradiation. In parallel, adenosine levels in bronchoalveolar lavage fluid (BALF) were increased by approximately 3-fold. Histologic evidence of lung fibrosis was observed by 25 weeks after irradiation. Conversely, CD73-deficient mice failed to accumulate adenosine in BALF and exhibited significantly less radiation-induced lung fibrosis (P < 0.010). Furthermore, treatment of wild-type mice with pegylated adenosine deaminase or CD73 antibodies also significantly reduced radiation-induced lung fibrosis. Taken together, our findings demonstrate that CD73 potentiates radiation-induced lung fibrosis, suggesting that existing pharmacologic strategies for modulating adenosine may be effective in limiting lung toxicities associated with the treatment of thoracic malignancies. Cancer Res; 76(10); 3045-56. ©2016 AACR.
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Affiliation(s)
- Florian Wirsdörfer
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany
| | - Simone de Leve
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany
| | - Federica Cappuccini
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany
| | - Therese Eldh
- Department of Radiation Oncology, University Hospital Tübingen, Tübingen, Germany
| | - Alina V Meyer
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany
| | - Eva Gau
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany
| | - Linda F Thompson
- Immunobiology and Cancer Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
| | - Ning-Yuan Chen
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center, Houston, Texas
| | - Harry Karmouty-Quintana
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center, Houston, Texas
| | - Ute Fischer
- Department of Pediatric Oncology, Hematology and Clinical Immunology, University Children's Clinic, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Michael Kasper
- Institute of Anatomy, Medical Faculty Carl Custav Carus, Technische Universität Dresden, Dresden, Germany
| | - Diana Klein
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany
| | - Jerry W Ritchey
- Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma
| | - Michael R Blackburn
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center, Houston, Texas
| | - Astrid M Westendorf
- Department of Infection Immunology, Institute of Medical Microbiology, Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - Martin Stuschke
- Department of Radiation Oncology, University Hospital Essen, Essen, Germany
| | - Verena Jendrossek
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany.
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25
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Hövelmann F, Gaspar I, Chamiolo J, Kasper M, Steffen J, Ephrussi A, Seitz O. LNA-enhanced DNA FIT-probes for multicolour RNA imaging. Chem Sci 2016; 7:128-135. [PMID: 29861973 PMCID: PMC5950760 DOI: 10.1039/c5sc03053f] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 08/17/2015] [Accepted: 11/01/2015] [Indexed: 01/04/2023] Open
Abstract
The simultaneous imaging of different RNA molecules in homogeneous solution is a challenge and requires optimisation to enable unambiguous staining of intracellular RNA targets. Our approach relies on single dye forced intercalation (FIT) probes, in which a visco-sensitive reporter of the thiazole orange (TO) family serves as a surrogate nucleobase and provides enhancements of fluorescence upon hybridisation. Previous FIT probes spanned the cyan and green emission range. Herein, we report for the first time chromophores for FIT probes that emit in the red range (above 600 nm). Such probes are valuable to overcome cellular auto-fluorescent background and enable multiplexed detection. In order to find suitable chromophores, we developed a submonomer approach that facilitated the rapid analysis of different TO family dyes in varied sequence positions. A carboxymethylated 4,4'-methine linked cyanine, which we named quinoline blue (QB), provided exceptional response characteristics at the 605 nm emission maximum. Exceeding previously reported base surrogates, the emission of the QB nucleotide intensified by up to 195-fold upon binding of complementary RNA. Owing to large extinction coefficients and quantum yields (up to ε = 129.000 L mol-1 cm-1 and Φ = 0.47, respectively) QB-FIT probes enable imaging of intracellular mRNA. A mixture of BO-, TO- and QB-containing FIT probes allowed the simultaneous detection of three different RNA targets in homogenous solution. TO- and QB-FIT probes were used to localize oskar mRNA and other polyadenylated mRNA molecules in developing oocytes from Drosphila melanogaster by means of wash-free fluorescent in situ hybridisation and super resolution microscopy (STED).
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Affiliation(s)
- F Hövelmann
- Department of Chemistry , Humboldt University Berlin , Brook-Taylor-Str. 2 , D-12489 Berlin , Germany .
- European Molecular Biology Laboratory (EMBL) Heidelberg , Meyerhofstr. 1 , 69117 Heidelberg , Germany
| | - I Gaspar
- European Molecular Biology Laboratory (EMBL) Heidelberg , Meyerhofstr. 1 , 69117 Heidelberg , Germany
| | - J Chamiolo
- Department of Chemistry , Humboldt University Berlin , Brook-Taylor-Str. 2 , D-12489 Berlin , Germany .
| | - M Kasper
- Department of Chemistry , Humboldt University Berlin , Brook-Taylor-Str. 2 , D-12489 Berlin , Germany .
| | - J Steffen
- Department of Chemistry , Humboldt University Berlin , Brook-Taylor-Str. 2 , D-12489 Berlin , Germany .
| | - A Ephrussi
- European Molecular Biology Laboratory (EMBL) Heidelberg , Meyerhofstr. 1 , 69117 Heidelberg , Germany
| | - O Seitz
- Department of Chemistry , Humboldt University Berlin , Brook-Taylor-Str. 2 , D-12489 Berlin , Germany .
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Mikla M, Ríos A, López-Navas A, Kasper M, Brzostek T, Martínez-Alarcón L, Ramis G, Ramírez P, López-Montesinos MJ. Brain Death: Is It a Misunderstood Concept Among Nursing Students in the South of Poland? Transplant Proc 2015; 47:2578-80. [PMID: 26680040 DOI: 10.1016/j.transproceed.2015.10.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/03/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND The objective of the present study was to analyze the knowledge and acceptance of the brain death (BD) concept among nursing students. METHODS The study was undertaken in the academic year of 2011 to 2012 in nursing students from the University of the South of Poland. The sample was carried out in compulsory sessions, in the 5 years of the nursing degree study, with a completion rate of 80%. The questionnaire was validated (PCID-DTO Ríos), self-administered, and completed anonymously. RESULTS The completion rate was 93% (492 of 530). Of the students surveyed, 75% (n = 369) knew the concept of BD and considered it to mean a person's death. Of the rest, 19% (n = 93) did not know it, and the remaining 6% (n = 30) believed that it did not mean that a person was dead. The following variables were significantly related with the correct knowledge of the BD concept: 1) age (22 ± 2 years; P ≤ .001); 2) academic year (P ≤ .001); 3) discussion with friends about organ donation and transplantation (ODT) (P = .035); 4) partner's favorable attitude toward donation and transplantation (P = .009); and 5) being Catholic (P = .031). In the multivariate analysis, the following variables persisted as independent variables related to the BD concept: a) age [OR = 1.468 (1.247-1.697); P ≤ .001] and b) partner's opinion of ODT [OR = 2.248 (1.255-4.025); P = .006]. No association was found with attitude toward ODT. CONCLUSIONS More than 25% of the students from the Jagiellonian University of Kraków did not know or accept the concept of brain death.
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Affiliation(s)
- M Mikla
- Department of Nursing, University of Murcia, Murcia, Spain; International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Reina Sofía General University Hospital, Murcia, Spain.
| | - A Ríos
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics, and Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Consejería de Sanidad y Consumo de la Región de Murcia, Murcia, Spain.
| | - A López-Navas
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics, and Gynaecology, University of Murcia, Murcia, Spain; Department of Psychology, Universidad Católica San Antonio, UCAM, Murcia, Spain
| | - M Kasper
- Faculty of Health Sciences, Jagiellonian University, Medical College, Kraków, Poland
| | - T Brzostek
- Faculty of Health Sciences, Jagiellonian University, Medical College, Kraków, Poland
| | - L Martínez-Alarcón
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics, and Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Consejería de Sanidad y Consumo de la Región de Murcia, Murcia, Spain
| | - G Ramis
- Faculty of Veterinary Science, University of Murcia, Murcia, Spain
| | - P Ramírez
- Department of Surgery, Paediatrics, Obstetrics, and Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Consejería de Sanidad y Consumo de la Región de Murcia, Murcia, Spain
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Waldmann T, Kasper M, Wohlfahrt-Mehrens M. Optimization of Charging Strategy by Prevention of Lithium Deposition on Anodes in high-energy Lithium-ion Batteries – Electrochemical Experiments. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.08.056] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bauer D, Dirks M, Kasper M, Buch A, Dittmer U, Giebel B, Wildschütz L, Busch M, Goergens A, Schneweis K, Eis-Hübinger A, Sodeik B, Heiligenhaus A, Roggendorf M, Krawczyk A. Prevention of herpes simplex stromal keratitis by a glycoprotein B-specific monoclonal. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- D. Bauer
- Department of Ophthalmology at St. Franziskus Hospital; Ophtha-Lab; Muenster Germany
| | - M. Dirks
- Department of Virology; University Hospital Essen; Essen Germany
| | - M. Kasper
- Department of Ophthalmology at St. Franziskus Hospital; Ophtha-Lab; Muenster Germany
| | - A. Buch
- Department of Virology; Hannover Medical School; Hannover Germany
| | - U. Dittmer
- Department of Virology; University Hospital Essen; Essen Germany
| | - B. Giebel
- Institute for Transfusion Medicine; University Hospital Essen; Essen Germany
| | - L. Wildschütz
- Department of Ophthalmology at St. Franziskus Hospital; Ophtha-Lab; Muenster Germany
| | - M. Busch
- Department of Ophthalmology at St. Franziskus Hospital; Ophtha-Lab; Muenster Germany
| | - A. Goergens
- Department of Virology; University Hospital Essen; Essen Germany
| | - K.E. Schneweis
- Institute of Virology; University Medical Center Bonn; Bonn Germany
| | | | - B. Sodeik
- Hannover Medical School; Institute of Virology; Hannover Germany
| | - A. Heiligenhaus
- Department of Ophthalmology at St. Franziskus Hospital; Ophtha-Lab; Muenster Germany
| | - M. Roggendorf
- Institute of Virology; University Hospital Essen; Essen Germany
| | - A. Krawczyk
- Institute of Virology; University Hospital Essen; Essen Germany
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Jendrossek V, Wirsdörfer F, Simone D, Cappuccini F, Therese E, Meyer A, Karmouty-Quintana H, Thompson L, Fischer U, Kasper M, Klein D, Ritchey J, Westendorf A, Stuschke M. 604 Loss or therapeutic inhibition of extracellular adenosine production by ecto-5′-nucleotidase(CD73) attenuates radiation-induced lung fibrosis. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30341-0] [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: 11/30/2022]
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Ouhib Z, Kasper M, Perez Calatayud J, Rodriguez S, Bhatnagar A, Pai S, Strasswimmer J. Aspects of dosimetry and clinical practice of skin brachytherapy: The American Brachytherapy Society working group report. Brachytherapy 2015; 14:840-58. [PMID: 26319367 DOI: 10.1016/j.brachy.2015.06.005] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 04/21/2015] [Accepted: 06/17/2015] [Indexed: 11/16/2022]
Abstract
PURPOSE Nonmelanoma skin cancers (NMSCs) are the most common type of human malignancy. Although surgical techniques are the standard treatment, radiation therapy using photons, electrons, and brachytherapy (BT) (radionuclide-based and electronic) has been an important mode of treatment in specific clinical situations. The purpose of this work is to provide a clinical and dosimetric summary of the use of BT for the treatment of NMSC and to describe the different BT approaches used in treating cutaneous malignancies. METHODS AND MATERIALS A group of experts from the fields of radiation oncology, medical physics, and dermatology, who specialize in managing cutaneous malignancies reviewed the literature and compiled their clinical experience regarding the clinical and dosimetric aspects of skin BT. RESULTS A dosimetric and clinical review of both high dose rate ((192)Ir) and electronic BT treatment including surface, interstitial, and custom mold applicators is given. Patient evaluation tools such as staging, imaging, and patient selection criteria are discussed. Guidelines for clinical and dosimetric planning, appropriate margin delineation, and applicator selection are suggested. Dose prescription and dose fractionation schedules, as well as prescription depth are discussed. Commissioning and quality assurance requirements are also outlined. CONCLUSIONS Given the limited published data for skin BT, this article is a summary of the limited literature and best practices currently in use for the treatment of NMSC.
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Affiliation(s)
- Zoubir Ouhib
- Department of Radiation Oncology, Lynn Cancer Institute, Boca Raton, FL.
| | - Michael Kasper
- Department of Radiation Oncology, Lynn Cancer Institute, Boca Raton, FL
| | - Jose Perez Calatayud
- Department of Radiation Oncology, Hospital La Fe, Valencia, Spain; Department of Radiation Oncology, Hospital Clinica Benidorm, Alicante, Spain
| | - Silvia Rodriguez
- Department of Radiation Oncology, Hospital Clinica Benidorm, Alicante, Spain
| | - Ajay Bhatnagar
- Department of Radiation Oncology, 21st Century Oncology Inc., Casa Grande, Arizona
| | - Sujatha Pai
- Department of Radiation Oncology, Targeted Radiation Therapy Institute, Pleasanton, CA
| | - John Strasswimmer
- Department of Biochemistry, Florida Atlantic University College of Medicine, Boca Raton, FL; Department of Dermatology, Florida Atlantic University College of Medicine, Boca Raton, FL
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Voelker MT, Fichtner F, Kasper M, Kamprad M, Sack U, Kaisers UX, Laudi S. Characterization of a double-hit murine model of acute respiratory distress syndrome. Clin Exp Pharmacol Physiol 2015. [PMID: 25115497 DOI: 10.1111/1440-1681] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aim of the present study was to characterize a murine model of acute respiratory distress syndrome (ARDS) abiding by the Berlin definition of human ARDS and guidelines for animal models of ARDS. To this end, C57BL/6NCrl mice were challenged with lipopolysaccharide (LPS; 15 mg/kg, i.p.) followed 18 h later by injection of oleic acid (OA; 0.12 mL/kg, i.v.). Controls received saline injection at both time points. Haemodynamics were monitored continuously. Arterial blood gas analyses were performed just before and every 30 min after OA challenge. Ninety minutes after OA challenge, the chest of mice was scanned using micro-computed tomography (CT). Cytokine concentrations were measured in plasma samples. Lungs were harvested 90 min after OA challenge for histology, immunohistochemistry, lung weight measurements and tissue cytokine detection. A histological lung injury score was determined. Eighteen hours after LPS challenge, mice exhibited a severe systemic inflammatory response syndrome. Oxygenation declined significantly after OA injections (Pa o2 /Fi o2 283 ± 73 and 256 ± 71 mmHg at 60 and 90 min, respectively; P < 0.001). Bilateral patchy infiltrates were present on the micro-CT scans. Histology revealed parenchymal damage with accumulation of polymorphonuclear neutrophils, intra-alveolar proteinacous debris and few hyaline membranes. The lung wet : dry ratio indicated damage to the alveolar capillary membrane. Cytokine patterns evidenced a severe local and systemic inflammatory state in plasma and lung tissue. In conclusion, the described two-hit model of ARDS shows a pathological picture of ARDS closely mimicking human ARDS according to the Berlin definition and may facilitate interpretation of prospective experimental results.
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Affiliation(s)
- Maria Theresa Voelker
- Department of Anesthesiology and Intensive Care Medicine, University Hospital of Leipzig, Leipzig, Germany
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Voelker MT, Fichtner F, Kasper M, Kamprad M, Sack U, Kaisers UX, Laudi S. Characterization of a double-hit murine model of acute respiratory distress syndrome. Clin Exp Pharmacol Physiol 2014; 41:844-53. [DOI: 10.1111/1440-1681.12283] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 06/16/2014] [Accepted: 06/21/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Maria Theresa Voelker
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
| | - Falk Fichtner
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
| | - Michael Kasper
- Institute of Anatomy, Medical Faculty; Dresden University of Technology; Dresden Germany
| | - Manja Kamprad
- Institute of Clinical Immunology; University Hospital of Leipzig; Leipzig Germany
| | - Ulrich Sack
- Institute of Clinical Immunology; University Hospital of Leipzig; Leipzig Germany
| | - Udo X Kaisers
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
| | - Sven Laudi
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
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Rodriguez Villalba S, Tormo A, Celada F, Botella R, Ballesta A, Hernandez M, Kasper M, Ouhib Z, Santos Ortega M, Pérez- Calatayud J. HDR Valencia Applicator in Nonmelanoma Skin Cancer: Clinical Outcomes. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2198] [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: 11/29/2022]
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Shang C, Kasper M, Kathriarachchi V, Benda R, Kleinman J, Cole J, Williams T. Can an alternative backround-corrected [18F] fluorodeoxyglucose (FDG) standard uptake value (SUV) be used for monitoring tumor local control following lung cancer stereotactic body radiosurgery? Int J Cancer Ther Oncol 2014. [DOI: 10.14319/ijcto.0203.17] [Citation(s) in RCA: 2] [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: 11/05/2022] Open
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Tormo A, Celada F, Rodriguez S, Botella R, Ballesta A, Kasper M, Ouhib Z, Santos M, Perez-Calatayud J. Non-melanoma skin cancer treated with HDR Valencia applicator: clinical outcomes. J Contemp Brachytherapy 2014; 6:167-72. [PMID: 25097557 PMCID: PMC4105643 DOI: 10.5114/jcb.2014.43247] [Citation(s) in RCA: 58] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 02/18/2014] [Accepted: 06/26/2014] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Radiotherapy (RT) has played a significant role in treating non melanoma skin cancer (NMSC). High-dose-rate brachytherapy (HDR-BT) approaches have a paramount relevance due to their adaptability, patient protection, and variable dose fractionation schedules. Several innovative applicators have been introduced to the brachytherapy community. The Valencia applicator is a new superficial device that improves the dose distribution compared with the Leipzig applicator. The purpose of this work is to assess the tumor control, cosmesis, and toxicity in patients with NMSC treated with the Valencia applicator and a new regimen of hypofractionation. MATERIAL AND METHODS From January 2008 to March 2010, 32 patients with 45 NMSC lesions were treated with the Valencia applicator in the Hospital La Fe. The gross tumor volume was visually assessed, but the tumor depth was evaluated using ultrasound imaging. All lesions for the selected cases were limited to 4 mm depth. The prescription dose was 42 Gy in 6 or 7 fractions (biologically effective dose [BED] ≈ 70 Gy), delivered twice a week. RESULTS Ninety-eight percent of the lesions were locally controlled at 47 months from treatment. Ninety-three percent of patients were out at least 36 months from treatment. The treatment was well tolerated in all cases. The highest skin toxicity was grade 1 RTOG/EORTC, having resolved with topical treatment at 4 weeks in all but one case which required 2 months. There were no grade 2 or higher late adverse events. CONCLUSIONS In patients with superficial basal cell carcinoma lesions less than 25 mm in maximum diameter, HDRBT treatment with the Valencia applicator using a hypofractionated regimen provides excellent results, for both cosmetic and local control at a minimum of 3 years follow-up. Moreover, the shorter hypofractionated regimen facilitates compliance, which is very relevant for the elderly patients in our series. Valencia applicators offer a simple, safe, quick, and attractive nonsurgical treatment option.
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Affiliation(s)
- Alejandro Tormo
- Radiotherapy Department, La Fe University and Polytechnic Hospital, Valencia, Spain
| | - Francisco Celada
- Radiotherapy Department, La Fe University and Polytechnic Hospital, Valencia, Spain
| | | | - Rafael Botella
- Dermatology Department, La Fe University and Polytechnic Hospital, Valencia, Spain
| | - Antonio Ballesta
- Radiotherapy Department, La Fe University and Polytechnic Hospital, Valencia, Spain
| | - Michael Kasper
- Radiation Oncology, Lynn Regional Cancer Center, Boca Raton, Florida, USA
| | - Zoubir Ouhib
- Radiation Oncology, Lynn Regional Cancer Center, Boca Raton, Florida, USA
| | - Manuel Santos
- Radiotherapy Department, Benidorm Hospital, Alicante, Spain
| | - Jose Perez-Calatayud
- Radiotherapy Department, Benidorm Hospital, Alicante, Spain
- Physics Section, Department of Radiation Oncology, La Fe University Hospital, Valencia, Spain
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Uhlig C, Silva PL, Ornellas D, Santos RS, Miranda PJ, Spieth PM, Kiss T, Kasper M, Wiedemann B, Koch T, Morales MM, Pelosi P, de Abreu MG, Rocco PR. The effects of salbutamol on epithelial ion channels depend on the etiology of acute respiratory distress syndrome but not the route of administration. Respir Res 2014; 15:56. [PMID: 24886221 PMCID: PMC4026154 DOI: 10.1186/1465-9921-15-56] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [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: 11/27/2013] [Accepted: 04/24/2014] [Indexed: 02/06/2023] Open
Abstract
Introduction We investigated the effects of intravenous and intratracheal administration of salbutamol on lung morphology and function, expression of ion channels, aquaporin, and markers of inflammation, apoptosis, and alveolar epithelial/endothelial cell damage in experimental pulmonary (p) and extrapulmonary (exp) mild acute respiratory distress syndrome (ARDS). Methods In this prospective randomized controlled experimental study, 56 male Wistar rats were randomly assigned to mild ARDS induced by either intratracheal (n = 28, ARDSp) or intraperitoneal (n = 28, ARDSexp) administration of E. coli lipopolysaccharide. Four animals with no lung injury served as controls (NI). After 24 hours, animals were anesthetized, mechanically ventilated in pressure-controlled mode with low tidal volume (6 mL/kg), and randomly assigned to receive salbutamol (SALB) or saline 0.9% (CTRL), intravenously (i.v., 10 μg/kg/h) or intratracheally (bolus, 25 μg). Salbutamol doses were targeted at an increase of ≈ 20% in heart rate. Hemodynamics, lung mechanics, and arterial blood gases were measured before and after (at 30 and 60 min) salbutamol administration. At the end of the experiment, lungs were extracted for analysis of lung histology and molecular biology analysis. Values are expressed as mean ± standard deviation, and fold changes relative to NI, CTRL vs. SALB. Results The gene expression of ion channels and aquaporin was increased in mild ARDSp, but not ARDSexp. In ARDSp, intravenous salbutamol resulted in higher gene expression of alveolar epithelial sodium channel (0.20 ± 0.07 vs. 0.68 ± 0.24, p < 0.001), aquaporin-1 (0.44 ± 0.09 vs. 0.96 ± 0.12, p < 0.001) aquaporin-3 (0.31 ± 0.12 vs. 0.93 ± 0.20, p < 0.001), and Na-K-ATPase-α (0.39 ± 0.08 vs. 0.92 ± 0.12, p < 0.001), whereas intratracheal salbutamol increased the gene expression of aquaporin-1 (0.46 ± 0.11 vs. 0.92 ± 0.06, p < 0.001) and Na-K-ATPase-α (0.32 ± 0.07 vs. 0.58 ± 0.15, p < 0.001). In ARDSexp, the gene expression of ion channels and aquaporin was not influenced by salbutamol. Morphological and functional variables and edema formation were not affected by salbutamol in any of the ARDS groups, regardless of the route of administration. Conclusion Salbutamol administration increased the expression of alveolar epithelial ion channels and aquaporin in mild ARDSp, but not ARDSexp, with no effects on lung morphology and function or edema formation. These results may contribute to explain the negative effects of β2-agonists on clinical outcome in ARDS.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Marcelo Gama de Abreu
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Av, Carlos Chagas Filho s/n, Bloco G-014, Rio de Janeiro, RJ 21941-902, Brazil.
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Gramse G, Kasper M, Fumagalli L, Gomila G, Hinterdorfer P, Kienberger F. Calibrated complex impedance and permittivity measurements with scanning microwave microscopy. Nanotechnology 2014; 25:145703. [PMID: 24633347 DOI: 10.1088/0957-4484/25/14/145703] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a procedure for calibrated complex impedance measurements and dielectric quantification with scanning microwave microscopy. The calibration procedure works in situ directly on the substrate with the specimen of interest and does not require any specific calibration sample. In the workflow tip-sample approach curves are used to extract calibrated complex impedance values and to convert measured S11 reflection signals into sample capacitance and resistance images. The dielectric constant of thin dielectric SiO2 films were determined from the capacitance images and approach curves using appropriate electrical tip-sample models and the εr value extracted at f = 19.81 GHz is in good agreement with the nominal value of εr ∼ 4. The capacitive and resistive material properties of a doped Si semiconductor sample were studied at different doping densities and tip-sample bias voltages. Following a simple serial model the capacitance-voltage spectroscopy curves are clearly related to the semiconductor depletion zone while the resistivity is rising with falling dopant density from 20 Ω to 20 kΩ. The proposed procedure of calibrated complex impedance measurements is simple and fast and the accuracy of the results is not affected by varying stray capacitances. It works for nanoscale samples on either fully dielectric or highly conductive substrates at frequencies between 1 and 20 GHz.
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Affiliation(s)
- G Gramse
- Johannes Kepler University of Linz, Institute for Biophysics, Gruberstrasse 40, A-4020 Linz, Austria
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Abstract
The aim of the present study was to demonstrate the location of the different members of the caveolin (cav) family in human muscle spindles. Twenty spindles of three human muscles (vastus medialis, ischiocavernosus, bulbospongiosus) from 12 cadavers were immunohistochemically stained for cav-1, cav-2, and cav-3, and the equatorial and polar regions evaluated. All layers of the outer and inner spindle capsule and all blood vessels within the spindle stained for cav-1 and cav-2. In the muscle spindle, intrafusal muscle fibres stained selectively for cav-3, but with a patchy appearance. Caveolinopathies may therefore also include changes in muscle spindle function.
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Affiliation(s)
- Kevin Peikert
- Department of Anatomy, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
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McCollum AD, Kocs DM, Chadha P, Monticelli MA, Boyd TE, Fain JD, Kasper M, Sanchez J, Simon M, Singh P, Thummala A, Vukelja SJ, Wang Y, Asmar L, Richards DA. Randomized phase II trial of preoperative chemoradiotherapy with or without cetuximab in locally advanced rectal adenocarcinoma. J Clin Oncol 2014. [DOI: 10.1200/jco.2014.32.3_suppl.537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
537 Background: Treatment for locally advanced rectal cancer (LARC) includes preoperative radiation concurrent with fluoropyrimidine chemotherapy (CRT). Local recurrence is a problem. Cetuximab is active in colorectal cancer and is effective with radiotherapy in other diseases. This study evaluated the pathologic response rate for LARC treated with preoperative chemoradiotherapy w/wo cetuximab. Methods: LARC (T3/4 or LN+, M0) pts were randomized to Arm1/Arm2. Arm 1 received standard pelvic radiotherapy (5040-5400cGy in daily fractions) with continuous infusional 5-FU (225mg/m2/day); Arm 2 received identical chemoradiotherapy + concurrent cetuximab (400mg/m2 initial dose) 1 week before pelvic radiotherapy, followed by 250mg/m2 weekly for the duration of chemoradiotherapy. After study treatment completion, pts were re-evaluated clinically and radiographically for clinical response. After 6-8 weeks, patients underwent surgical resection. The primary end point was pathologic CR (pCR), and secondary endpoints included ORR, RFS, OS, and local recurrence rates. Results: 139 pts were enrolled (Arm 1=69/Arm2=70); Arm1/Arm2 median age 61/55 yrs, and stage II and III 59%, 39%/40%, 60%. In 124 postsurgery pts, pCR occurred in 17 Arm 1 pts (28.3%, 95% CI 17.5-41.4) and 17 Arm 2 pts (26.6%, 95% CI 16.3-39.1); TRG postsurgery was similar between treatment arms (Table). Grade 3 and 4 toxicities were largely nonhematologic: diarrhea 16%/22%, rash 0%/12%, dehydration 5%/8%, mucositis 5%/6%. The 5-yr RFS for Arm1/Arm2 was 61%/65%, 5-yr OS was 66%/83%, local recurrence was 3%/4%. Conclusions: The addition of cetuximab to preoperative CRT for LARC was associated with increased but manageable toxicities. pCR rates were similar between treatment arms, as were survival statistics and local recurrence rates. No association was found between KRAS status and pCR. Clinical trial information: NCT00527111. [Table: see text]
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Affiliation(s)
| | - Darren M. Kocs
- US Oncology Research, LLC, McKesson Specialty Health, and Texas Oncology, Round Rock, TX
| | - Punit Chadha
- US Oncology Research, McKesson Specialty Health and Texas Oncology-Austin Central, Austin, TX
| | - Michael A. Monticelli
- US Oncology Research, McKesson Specialty Health/Willamette Valley Cancer Center, Springfield, OR
| | - Thomas E. Boyd
- US Oncology Research and North Star Lodge Cancer Center, Yakima, WA
| | - Jerry Dean Fain
- US Oncology Research, McKesson Specialty Health and Texas Oncology-Midtown, Austin, TX
| | - Michael Kasper
- US Oncology Research, McKesson Specialty Health and Texas Oncology-Austin Central, Austin, TX
| | - James Sanchez
- US Oncology Research, McKesson Specialty Health and Cancer Centers of Nevada, Las Vegas, NV
| | | | - Paramjeet Singh
- US Oncology Research, McKesson Specialty Health and Cancer Centers of North Carolina, Cary, NC
| | - Anu Thummala
- US Oncology Research, McKesson Specialty Health and Cancer Centers of Nevada, Las Vegas, NV
| | | | - Yunfei Wang
- US Oncology Research; McKesson Specialty Health, The Woodlands, TX
| | - Lina Asmar
- US Oncology Research, LLC, McKesson Specialty Health, The Woodlands, TX
| | - Donald A. Richards
- Tyler Cancer Center, US Oncology Research, McKesson Specialty Health, Houston, TX
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Mustak M, Boltuch-Sherif J, Kasper M, Minimair G, Strau G, Erlacher L. AB1075 Seronegative arthropathies: Value of dual-energy CT for differential diagnosis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1074] [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]
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Shang C, Kasper M, Williams T, Benda R, Shope J, Kathriarachchi V, Schramm A, Cole J. A New Reliable SUV Index for Evaluating Local Control Using F-18 FDG PET Following Lung SBRT. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2004] [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: 11/30/2022]
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Koslowski R, Kasper M, Schaal K, Knels L, Lange M, Bernhard W. Surfactant metabolism and anti-oxidative capacity in hyperoxic neonatal rat lungs: effects of keratinocyte growth factor on gene expression in vivo. Histochem Cell Biol 2012; 139:461-72. [DOI: 10.1007/s00418-012-1038-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2012] [Indexed: 01/10/2023]
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Shang C, Kathriarachchi V, Williams T, Cole J, Kasper M, Shope J, Benda R. SU-E-J-199: A Novel Method to Evaluate Local Control and Recurrence Using 18F-FDG PET After Lung SBRT. Med Phys 2012; 39:3698. [PMID: 28519025 DOI: 10.1118/1.4735040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The goal of this study is to evaluate the predictability of a novel method using a self background-corrected maximum Standard Uptake Value (cSUVmax) from 18F-FDG Positron Emission Tomography (PET) of the patients following lung cancer stereotactic body radiosurgery (SBRT). METHODS 20 qualified patients treated out of 38 patients treated with SBRT for a single lung malignant lesion between May 2009 and December 2009 were enrolled in the cohort study. All had pre- and at least one post-treatment PET images available at the time of study. The mean normal tissue SUV from the descending aorta was sampled as baseline to divide SUVmax of tumor site. The resultant cSUVmax was used for assess the local control or possible recurrence. The Result was then compared with that using SUVmax alone method. RESULTS The average follow-up length was 48.9 weeks ranging from 18.6 to 115.0 weeks. The mean SUV of aorta was measured as 1.821±0.364, ranging from 1.173 to 2.576. From the pre-treatment PET, 70% and 65% was indicated positive correspondingly when using SUVmax with 2.50 and cSUVmax with 1.52 thresholds. When PET was taken < 29 weeks post-SBRT, 75% and 67% respectively showed higher values in the locally controlled group. For PET = 29 weeks after SBRT, with cSUVmax both locally controlled and recurrent groups are accurately identified, while SUVmax shows 5% false positive and one possible false negative. CONCLUSIONS The SUVmax in lung tumor site corrected by the mean SUV of descending aorta or cSUVmax provided a more reliable parameter than using SUVmax alone in predicting the local control and recurrence for follow-up PET of patients after lung SBRT. The method used in this study objectively displayed a strong correlation between low cSUVmax and local control following lung SBRT in this investigation, otherwise a local recurrence is suggested.
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Affiliation(s)
- C Shang
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
| | - V Kathriarachchi
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
| | - T Williams
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
| | - J Cole
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
| | - M Kasper
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
| | - J Shope
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
| | - R Benda
- Boca Raton Regional Hospital, Boca Raton, FL.,Florida Atlantic University, Boca Raton, FL
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Pfleger C, Ebeling G, Bläsche R, Patton M, Patel HH, Kasper M, Barth K. Detection of caveolin-3/caveolin-1/P2X7R complexes in mice atrial cardiomyocytes in vivo and in vitro. Histochem Cell Biol 2012; 138:231-41. [PMID: 22585038 DOI: 10.1007/s00418-012-0961-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2012] [Indexed: 12/21/2022]
Abstract
Caveolae and caveolins, structural components of caveolae, are associated with specific ion channels in cardiac myocytes. We have previously shown that P2X purinoceptor 7 (P2X7R), a ligand-gated ion channel, is increased in atrial cardiomyocytes of caveolin-1 knockout mice; however, the specific biochemical relationship of P2X7R with caveolins in the heart is not clear. The aim of this work was to study the presence of the P2X7R in atrial cardiomyocytes and its biochemical relationship to caveolin-1 and caveolin-3. Caveolin isoforms and P2X7R were predominantly localized in buoyant membrane fractions (lipid rafts/caveolae) prepared from hearts using detergent-free sucrose gradient centrifugation. Caveolin-1 knockout mice showed normal distribution of caveolin-3 and P2X7R to buoyant membranes indicating the importance of caveolin-3 to formation of caveolae. Using clear native-PAGE, we showed that caveolin-1, -3 and P2X7R contribute to the same protein complex in the membranes of murine cardiomyocytes and in the immortal cardiomyocyte cell line HL-1. Western blot analysis revealed increased caveolin-1 and -3 proteins in tissue homogenates of P2X7R knockout mice. Finally, tissue homogenates of atrial tissues from caveolin-3 knockout mice showed elevated mRNA for P2X7R in atria. The colocalization of caveolins with P2X7R in a biochemical complex and compensated upregulation of P2X7R or caveolins in the absence of any component of the complex suggests P2X7R and caveolins may serve an important regulatory control point for disease pathology in the heart.
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Affiliation(s)
- Claudia Pfleger
- Department of Anatomy, Medical Faculty, Institute of Anatomy, University of Technology Dresden, TU Dresden, Fetscherstr. 76, 01307 Dresden, Germany
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Sonkoly E, Lovén J, Xu N, Meisgen F, Wei T, Brodin P, Jaks V, Kasper M, Shimokawa T, Harada M, Heilborn J, Hedblad MA, Hippe A, Grandér D, Homey B, Zaphiropoulos PG, Arsenian-Henriksson M, Ståhle M, Pivarcsi A. MicroRNA-203 functions as a tumor suppressor in basal cell carcinoma. Oncogenesis 2012; 1:e3. [PMID: 23552555 PMCID: PMC3412636 DOI: 10.1038/oncsis.2012.3] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [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] [Indexed: 12/22/2022] Open
Abstract
Basal cell carcinoma (BCC) of the skin represents the most common malignancy in humans. MicroRNAs (miRNAs), small regulatory RNAs with pleiotropic function, are commonly misregulated in cancer. Here we identify miR-203, a miRNA abundantly and preferentially expressed in skin, to be downregulated in BCCs. We show that activation of the Hedgehog (HH) pathway, critically involved in the pathogenesis of BCCs, as well as the EGFR/MEK/ERK/c-JUN signaling pathway suppresses miR-203. We identify c-JUN, a key effector of the HH pathway, as a novel direct target for miR-203 in vivo. Further supporting the role of miR-203 as a tumor suppressor, in vivo delivery of miR-203 mimics in a BCC mouse model results in the reduction of tumor growth. Our results identify a regulatory circuit involving miR-203 and c-JUN, which provides functional control over basal cell proliferation and differentiation. We propose that miR-203 functions as a ‘bona fide' tumor suppressor in BCC, whose suppressed expression contributes to oncogenic transformation via derepression of multiple stemness- and proliferation-related genes, and its overexpression could be of therapeutic value.
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Affiliation(s)
- E Sonkoly
- Molecular Dermatology Research Group, Unit of Dermatology and Venereology, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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Shivshankar P, Brampton C, Miyasato S, Kasper M, Thannickal VJ, Le Saux CJ. Caveolin-1 deficiency protects from pulmonary fibrosis by modulating epithelial cell senescence in mice. Am J Respir Cell Mol Biol 2012; 47:28-36. [PMID: 22362388 DOI: 10.1165/rcmb.2011-0349oc] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Idiopathic pulmonary fibrosis is associated with a decreased expression of caveolin-1 (cav-1), yet its role remains unclear. To investigate the role of cav-1, we induced pulmonary fibrosis in wild-type (WT) and cav-1-deficient (cav-1(-/-)) mice using intratracheal instillation of bleomycin. Contrary to expectations, significantly less collagen deposition was measured in tissue from cav-1(-/-) mice than in their WT counterparts, consistent with reduced mRNA expression of procollagen1a2 and procollagen3a1. Moreover, cav-1(-/-) mice demonstrated 77% less α-smooth muscle actin staining, suggesting reduced mesenchymal cell activation. Levels of pulmonary injury, assessed by tenascin-C mRNA expression and CD44v10 detection, were significantly increased at Day 21 after injury in WT mice, an effect significantly attenuated in cav-1(-/-) mice. The apparent protective effect against bleomycin-induced fibrosis in cav-1(-/-) mice was attributed to reduce cellular senescence and apoptosis in cav-1(-/-) epithelial cells during the early phase of lung injury. Reduced matrix metalloproteinase (MMP)-2 and MMP-9 expressions indicated a low profile of senescence-associated secretory phenotype (SASP) in the bleomycin-injured cav-1(-/-) mice. However, IL-6 and macrophage inflammatory protein 2 were increased in WT and cav-1(-/-) mice after bleomycin challenge, suggesting that bleomycin-induced inflammatory response substantiated the SASP pool. Thus, loss of cav-1 attenuates early injury response to bleomycin by limiting stress-induced cellular senescence/apoptosis in epithelial cells. In contrast, decreased cav-1 expression promotes fibroblast activation and collagen deposition, effects that may be relevant in later stages of reparative response. Hence, therapeutic strategies to modulate the expression of cav-1 should take into account cell-specific effects in the regenerative responses of the lung epithelium to injury.
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Affiliation(s)
- Pooja Shivshankar
- Department of Medicine, Division of Cardiology/Pulmonary diseases, University of Texas Health Science Center at San Antonio, 78229, USA
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Bläsche R, Ebeling G, Perike S, Weinhold K, Kasper M, Barth K. Activation of P2X7R and downstream effects in bleomycin treated lung epithelial cells. Int J Biochem Cell Biol 2011; 44:514-24. [PMID: 22192844 DOI: 10.1016/j.biocel.2011.12.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 12/05/2011] [Accepted: 12/06/2011] [Indexed: 10/14/2022]
Abstract
Changes in intracellular calcium concentration [Ca(2+)](i) are believed to influence the proliferation and differentiation of airway epithelial cells both in vivo and in vitro. In the present study, using mouse alveolar epithelial E10 cells, we demonstrated that the treatment of lung epithelial cells with BLM resulted in elevated intracellular Ca(2+) levels. BLM further increased P2rx7 mRNA expression and P2X7R protein levels, paralleled by increased PKC-β1 levels. BLM treatment or stimulation of the P2X7R with the P2X7R agonist BzATP induced translocation of PKC-β1 from the cytoplasm to the membrane. The expression of PKC-β1 was repressed by the P2X7R inhibitor oxATP, suggesting that PKC-β1 is downstream of P2X7R activation. Furthermore, cells exposed to BLM contained increased amounts of P2X7R and PKC-β1 in Cav-1 containing lipid raft fractions. The comparison of lung tissues from wild-type and P2rx7(-/-) mice revealed decreased protein and mRNA levels of PKC-β1 and CaM as well as decreased immunoreactivity for PKC-β1. The knockdown of P2X7R in alveolar epithelial cells resulted also in a loss of PKC-β1. These data suggest that the effect of P2X7R on expression of PKC-β1 detected in alveolar epithelial cells is also functioning in the animal model. Immunohistochemical evaluation of fibrotic lungs derived from a BLM-induced mouse model revealed a strong increase in PKC-β1 immunoreactivity. The present experiments demonstrated that the increased expression of P2X7R influences PKC-β1. We predict that increased Ca(2+) concentration stimulates PKC-β1, whereas the prerequisite for activating PKC-β1 after P2X7R increase remained to be determined. Our findings suggest that PKC-β1 is important in the pathogenesis of pulmonary fibrosis.
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Affiliation(s)
- Robert Bläsche
- University of Technology Dresden, Department of Anatomy, Medical Clinic, Fetscherstr. 76, 01307 Dresden, Germany
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Spieth PM, Güldner A, Carvalho AR, Kasper M, Pelosi P, Uhlig S, Koch T, Gama de Abreu M. Open lung approach vs acute respiratory distress syndrome network ventilation in experimental acute lung injury. Br J Anaesth 2011; 107:388-97. [PMID: 21652617 PMCID: PMC9174723 DOI: 10.1093/bja/aer144] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [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] [Indexed: 11/27/2022] Open
Abstract
Background Setting and strategies of mechanical ventilation with positive end-expiratory pressure (PEEP) in acute lung injury (ALI) remains controversial. This study compares the effects between lung-protective mechanical ventilation according to the Acute Respiratory Distress Syndrome Network recommendations (ARDSnet) and the open lung approach (OLA) on pulmonary function and inflammatory response. Methods Eighteen juvenile pigs were anaesthetized, mechanically ventilated, and instrumented. ALI was induced by surfactant washout. Animals were randomly assigned to mechanical ventilation according to the ARDSnet protocol or the OLA (n=9 per group). Gas exchange, haemodynamics, pulmonary blood flow (PBF) distribution, and respiratory mechanics were measured at intervals and the lungs were removed after 6 h of mechanical ventilation for further analysis. Results PEEP and mean airway pressure were higher in the OLA than in the ARDSnet group [15 cmH2O, range 14–18 cmH2O, compared with 12 cmH2O; 20.5 (sd 2.3) compared with 18 (1.4) cmH2O by the end of the experiment, respectively], and OLA was associated with improved oxygenation compared with the ARDSnet group after 6 h. OLA showed more alveolar overdistension, especially in gravitationally non-dependent regions, while the ARDSnet group was associated with more intra-alveolar haemorrhage. Inflammatory mediators and markers of lung parenchymal stress did not differ significantly between groups. The PBF shifted from ventral to dorsal during OLA compared with ARDSnet protocol [−0.02 (−0.09 to −0.01) compared with −0.08 (−0.12 to −0.06), dorsal–ventral gradients after 6 h, respectively]. Conclusions According to the OLA, mechanical ventilation improved oxygenation and redistributed pulmonary perfusion when compared with the ARDSnet protocol, without differences in lung inflammatory response.
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Affiliation(s)
- P M Spieth
- Department of Anesthesia and Intensive Care Therapy, University Hospital Dresden, Dresden, Germany.
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Norum J, Kasper M, Jaks V, Toftgárd R. 1009 POSTER Mammary Gland Tumour Formation in Conditional Transgenic Mice Expressing GLI1. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70652-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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