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Fekete Z, Ignat P, Resiga AC, Todor N, Muntean AS, Resiga L, Curcean S, Lazar G, Gherman A, Eniu D. Unselective Measurement of Tumor-to-Stroma Proportion in Colon Cancer at the Invasion Front-An Elusive Prognostic Factor: Original Patient Data and Review of the Literature. Diagnostics (Basel) 2024; 14:836. [PMID: 38667481 DOI: 10.3390/diagnostics14080836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
The tumor-to-stroma ratio is a highly debated prognostic factor in the management of several solid tumors and there is no universal agreement on its practicality. In our study, we proposed confirming or dismissing the hypothesis that a simple measurement of stroma quantity is an easy-to-use and strong prognostic tool. We have included 74 consecutive patients with colorectal cancer who underwent primary curative abdominal surgery. The tumors have been grouped into stroma-poor (stroma < 10%), medium-stroma (between 10 and 50%) and stroma-rich (over 50%). The proportion of tumor stroma ranged from 5% to 70% with a median of 25%. Very few, only 6.8% of patients, had stroma-rich tumors, 4% had stroma-poor tumors and 89.2% had tumors with a medium quantity of stroma. The proportion of stroma, at any cut-off, had no statistically significant influence on the disease-specific survival. This can be explained by the low proportion of stroma-rich tumors in our patient group and the inverse correlation between stroma proportion and tumor grade. The real-life proportion of stroma-rich tumors and the complex nature of the stroma-tumor interaction has to be further elucidated.
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Affiliation(s)
- Zsolt Fekete
- Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
- "Prof. Dr. I. Chiricuță" Oncology Institute, 400015 Cluj-Napoca, Romania
| | - Patricia Ignat
- Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
- "Prof. Dr. I. Chiricuță" Oncology Institute, 400015 Cluj-Napoca, Romania
| | | | - Nicolae Todor
- "Prof. Dr. I. Chiricuță" Oncology Institute, 400015 Cluj-Napoca, Romania
| | | | - Liliana Resiga
- "Prof. Dr. I. Chiricuță" Oncology Institute, 400015 Cluj-Napoca, Romania
| | - Sebastian Curcean
- Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
- "Prof. Dr. I. Chiricuță" Oncology Institute, 400015 Cluj-Napoca, Romania
| | - Gabriel Lazar
- Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
| | - Alexandra Gherman
- Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
- "Prof. Dr. I. Chiricuță" Oncology Institute, 400015 Cluj-Napoca, Romania
| | - Dan Eniu
- Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
- Nicolae Stăncioiu Heart Institute, 400001 Cluj-Napoca, Romania
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Ujfalusi-Pozsonyi K, Bódis E, Nyitrai M, Kengyel A, Telek E, Pécsi I, Fekete Z, Varnyuné Kis-Bicskei N, Mas C, Moussaoui D, Pernot P, Tully MD, Weik M, Schirò G, Kapetanaki SM, Lukács A. ATP-dependent conformational dynamics in a photoactivated adenylate cyclase revealed by fluorescence spectroscopy and small-angle X-ray scattering. Commun Biol 2024; 7:147. [PMID: 38307988 PMCID: PMC10837130 DOI: 10.1038/s42003-024-05842-1] [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: 06/17/2023] [Accepted: 01/22/2024] [Indexed: 02/04/2024] Open
Abstract
Structural insights into the photoactivated adenylate cyclases can be used to develop new ways of controlling cellular cyclic adenosine monophosphate (cAMP) levels for optogenetic and other applications. In this work, we use an integrative approach that combines biophysical and structural biology methods to provide insight on the interaction of adenosine triphosphate (ATP) with the dark-adapted state of the photoactivated adenylate cyclase from the cyanobacterium Oscillatoria acuminata (OaPAC). A moderate affinity of the nucleotide for the enzyme was calculated and the thermodynamic parameters of the interaction have been obtained. Stopped-flow fluorescence spectroscopy and small-angle solution scattering have revealed significant conformational changes in the enzyme, presumably in the adenylate cyclase (AC) domain during the allosteric mechanism of ATP binding to OaPAC with small and large-scale movements observed to the best of our knowledge for the first time in the enzyme in solution upon ATP binding. These results are in line with previously reported drastic conformational changes taking place in several class III AC domains upon nucleotide binding.
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Affiliation(s)
- K Ujfalusi-Pozsonyi
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | - E Bódis
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | - M Nyitrai
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | - A Kengyel
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | - E Telek
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | - I Pécsi
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | - Z Fekete
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary
| | | | - C Mas
- Univ. Grenoble Alpes, CNRS, CEA, EMBL, ISBG, F-38000, Grenoble, France
| | - D Moussaoui
- European Synchrotron Radiation Facility (ESRF), Grenoble, France
| | - P Pernot
- European Synchrotron Radiation Facility (ESRF), Grenoble, France
| | - M D Tully
- European Synchrotron Radiation Facility (ESRF), Grenoble, France
| | - M Weik
- Institut de Biologie Structurale (IBS), Université Grenoble Alpes, CEA, CNRS, Grenoble, France
| | - G Schirò
- Institut de Biologie Structurale (IBS), Université Grenoble Alpes, CEA, CNRS, Grenoble, France
| | - S M Kapetanaki
- Institut de Biologie Structurale (IBS), Université Grenoble Alpes, CEA, CNRS, Grenoble, France.
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary.
| | - A Lukács
- Department of Biophysics, Medical School, University of Pécs, 7624, Pécs, Hungary.
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Popiţa AR, Rusu A, Muntean V, Cadariu PA, Irimie A, Lisencu C, Pop B, Resiga L, Fekete Z, Badea R. Preoperative MRI accuracy after neoadjuvant chemoradiation for locally advanced rectal cancer. Med Pharm Rep 2023; 96:258-268. [PMID: 37577010 PMCID: PMC10419690 DOI: 10.15386/mpr-2542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/01/2022] [Accepted: 06/27/2022] [Indexed: 08/15/2023] Open
Abstract
Background and aims To evaluate the performance of magnetic resonance imaging (MRI) in restaging locally advanced rectal cancers (LARC) after neoadjuvant chemoradiotherapy (nCRT), with pathologic correlation. Methods 80 patients with LARC treated with neoadjuvant therapy, with restaging MRI and surgery, were enrolled and prospectively reviewed. The diagnostic accuracy of the restaging MRI was assessed for tumor (ymrT), nodal status (ymrN), circumferential resection margin (ymrCRM), extramural vascular invasion (ymrEMVI) and tumoral deposits (ymrN1c) by calculating the sensitivity (Se), specificity (Sp), negative predictive values (NPV) and positive predictive values (PPV). Response to treatment was classified as good response (complete/near complete) vs. poor response (poor/partial response). The agreement between the tumor regression grade at MRI (mrTRG) and pathology (pTRG) was reported, as well the performance of mrTRG to identify good responders. The correlation between restaging MRI and histopathology was assessed by Spearman correlation coefficient. Results The MRI accuracy ranged between 63.8% and 92.5% for T stage and was 81.3% for N stage. All MRI parameters evaluated at restaging were statistically significant correlated with histopathology evaluation, but EMVI. There was moderate correlation for N and N1c and a positive strong correlation for T, CRM and TRG (Spearman correlation coefficient of 0.390 for mrN1c-pN1c, 0.428 for mrN-pN, 0.522 for mrCRM-pCRM, 0.550 for mrT-pT and 0.731 for mrTRG-pTRG). Diagnostic accuracy of anal sphincter invasion was 91.3%, with a negative predictive value (NPV) of 100%. Accuracy rate varied between 70% for partial response to 93.75% for complete response after nCRT. Conclusions MR imaging had good accuracy in restaging LARCs after nCRT. Our results showed high MRI accuracy in detecting anal sphincter involvement for low rectal tumors, with high NPV to exclude tumoral invasion. Restaging MRI predicted well the tumor regression grade, with good diagnostic performance in differentiating good responders from poor/partial responders. The accuracy was high for detecting complete response.
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Affiliation(s)
- Anca-Raluca Popiţa
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
- Medical Imaging Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Adriana Rusu
- Diabetes and Nutrition Diseases Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Valentin Muntean
- Surgery Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Patriciu Achimas Cadariu
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
- Oncology Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandru Irimie
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
- Oncology Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cosmin Lisencu
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
- Oncology Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Bogdan Pop
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
- Anatomical Pathology Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Liliana Resiga
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
| | - Zsolt Fekete
- “Ion Chiricuţă” Oncology Institute, Cluj-Napoca, Romania
- Oncology Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Radu Badea
- Medical Imaging Department, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Fekete Z, Tertan BO, Raduly L, Eniu DT, Buiga R, Galatar M, Berindan-Neagoe I. Prevalence of MMTV-like sequences in breast cancer samples in Romanian patients-there is a geographic difference compared to the Western world. Infect Agent Cancer 2023; 18:39. [PMID: 37340312 DOI: 10.1186/s13027-023-00486-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 02/02/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND Breast cancer, although the most frequently diagnosed malignant tumor in humans, has a less clear etiology compared to other frequent cancer types. Mouse-mammary tumor virus (MMTV) is involved in breast cancer in mice and dogs and might play a role in the etiology of some breast cancers in humans, since an MMTV-like sequence was identified in 20-40% of breast cancer samples in Western Europe, USA, Australia and some other parts of the world. The purpose of our study was to identify MMTV-like DNA sequences in breast tissue samples from breast cancer patients who underwent curative surgery in our regional academic center in Romania, EU. METHODS We selected 75 patients with non-metastatic breast cancer treated surgically with curative intent, who did not undergo any neoadjuvant treatment. Out of these patients, 50 underwent radical lumpectomy and 25 modified radical mastectomy. Based on previous reports in the literature we searched using PCR the MMTV-like DNA env sequence in the breast cancer tissue and normal breast tissue obtained from the same patients. RESULTS None of the examined samples was positive for MMTV-like target sequences on PCR. CONCLUSIONS We could not prove that MMTV plays a role in the etiology of breast cancer in our patient group. This finding is similar to those from publications of other geographically related research groups.
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Affiliation(s)
- Zsolt Fekete
- Oncology-Radiotherapy, Department of Oncology, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
- Institute of Oncology "Prof Dr. Ion Chiricuță", Radiotherapy III, Cluj-Napoca, Romania.
| | | | - Lajos Raduly
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Tudor Eniu
- Oncological Surgery and Gynecologic Oncology, Department of Oncology, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
- Surgery Department, Institute of Oncology "Prof Dr. Ion Chiricuță", Cluj-Napoca, Romania
| | - Rares Buiga
- Pathology Department, Institute of Oncology "Prof Dr. Ion Chiricuță", Cluj-Napoca, Romania
| | - Mihaela Galatar
- Pathology Department, Institute of Oncology "Prof Dr. Ion Chiricuță", Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Szűcs D, Fekete Z, Guba M, Kemény L, Jemnitz K, Kis E, Veréb Z. Toward better drug development: Three-dimensional bioprinting in toxicological research. Int J Bioprint 2023; 9:663. [PMID: 37065668 PMCID: PMC10090537 DOI: 10.18063/ijb.v9i2.663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/01/2022] [Indexed: 01/09/2023] Open
Abstract
The importance of three-dimensional (3D) models in pharmacological tests and personalized therapies is significant. These models allow us to gain insight into the cell response during drug absorption, distribution, metabolism, and elimination in an organ-like system and are suitable for toxicological testing. In personalized and regenerative medicine, the precise characterization of artificial tissues or drug metabolism processes is more than crucial to gain the safest and the most effective treatment for the patients. Using these 3D cell cultures derived directly from patient, such as spheroids, organoids, and bioprinted structures, allows for testing drugs before administration to the patient. These methods allow us to select the most appropriate drug for the patient. Moreover, they provide chance for better recovery of patients, since time is not wasted during therapy switching. These models could be used in applied and basic research as well, because their response to treatments is quite similar to that of the native tissue. Furthermore, they may replace animal models in the future because these methods are cheaper and can avoid interspecies differences. This review puts a spotlight on this dynamically evolving area and its application in toxicological testing.
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Fekete Z, Zátonyi A, Kaszás A, Madarász M, Slézia A. Transparent neural interfaces: challenges and solutions of microengineered multimodal implants designed to measure intact neuronal populations using high-resolution electrophysiology and microscopy simultaneously. Microsyst Nanoeng 2023; 9:66. [PMID: 37213820 PMCID: PMC10195795 DOI: 10.1038/s41378-023-00519-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 02/03/2023] [Accepted: 03/01/2023] [Indexed: 05/23/2023]
Abstract
The aim of this review is to present a comprehensive overview of the feasibility of using transparent neural interfaces in multimodal in vivo experiments on the central nervous system. Multimodal electrophysiological and neuroimaging approaches hold great potential for revealing the anatomical and functional connectivity of neuronal ensembles in the intact brain. Multimodal approaches are less time-consuming and require fewer experimental animals as researchers obtain denser, complex data during the combined experiments. Creating devices that provide high-resolution, artifact-free neural recordings while facilitating the interrogation or stimulation of underlying anatomical features is currently one of the greatest challenges in the field of neuroengineering. There are numerous articles highlighting the trade-offs between the design and development of transparent neural interfaces; however, a comprehensive overview of the efforts in material science and technology has not been reported. Our present work fills this gap in knowledge by introducing the latest micro- and nanoengineered solutions for fabricating substrate and conductive components. Here, the limitations and improvements in electrical, optical, and mechanical properties, the stability and longevity of the integrated features, and biocompatibility during in vivo use are discussed.
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Affiliation(s)
- Z. Fekete
- Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
- Institute of Cognitive Neuroscience & Psychology, Eotvos Lorand Research Network, Budapest, Hungary
| | - A. Zátonyi
- Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - A. Kaszás
- Mines Saint-Etienne, Centre CMP, Département BEL, F - 13541 Gardanne, France
- Institut de Neurosciences de la Timone, CNRS UMR 7289 & Aix-Marseille Université, 13005 Marseille, France
| | - M. Madarász
- János Szentágothai PhD Program of Semmelweis University, Budapest, Hungary
- BrainVision Center, Budapest, Hungary
| | - A. Slézia
- Institut de Neurosciences de la Timone, CNRS UMR 7289 & Aix-Marseille Université, 13005 Marseille, France
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Gunes Y, Okyar A, Krajcsi P, Fekete Z, Ustuner O. Modulation of monepantel secretion into milk by soy isoflavones. J Vet Pharmacol Ther 2022; 46:185-194. [PMID: 36448496 DOI: 10.1111/jvp.13106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/05/2022] [Accepted: 11/18/2022] [Indexed: 12/05/2022]
Abstract
Monepantel (MNP), a novel anthelmintic drug from amino-acetonitrile derivatives, is a substrate for breast cancer resistance protein (BCRP). BCRP-mediated milk secretion of drugs can be altered by isoflavones. In this study, we aimed to show how soy isoflavones and BCRP inhibitors genistein (GEN) and daidzein (DAI) can modulate the secretion of MNP into milk. Moreover, we observed that the expression of BCRP in the lactating mammary gland of sheep was significantly higher than in non-lactating sheep using Western blot analysis. These properties of MNP and MNPSO2 (monepantel sulfone, the major active metabolite of MNP), identified as a BCRP substrate in determining the interaction with BCRP, were examined by vesicular transport (VT) inhibition assays. In pharmacokinetic studies, we demonstrated the transport of MNP into milk in three experimental groups: G1 fed standard forage; G2 fed soy-enriched forage; G3 fed standard forage paired with orally administered exogenous GEN and DAI. The concentrations of MNP and MNPSO2 were analyzed by high-performance liquid chromatography. Compared to the control group (3.27 ± 1.13 vs. 5.46 ± 2.23), the AUC (0-840 h) milk/plasma ratio decreased by 40% in the soy-enriched diet group. The concentrations of GEN and DAI were determined using liquid chromatography coupled with tandem mass spectrometry in soy. A VT inhibition assay was conducted to determine the IC50 values for MNP and MNPSO2 as BCRP inhibitors. This study showed that milk excretion of a BCRP substrate, such as monepantel, can be diminished by the presence of isoflavones in the diet.
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Affiliation(s)
- Yigit Gunes
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine Istanbul University‐Cerrahpasa Istanbul Turkey
| | - Alper Okyar
- Department of Pharmacology, Faculty of Pharmacy Istanbul University Istanbul Turkey
| | - Peter Krajcsi
- Solvo Biotechnology, A Charles River Company, Faculty of Health Sciences Semmelweis University Budapest Hungary
| | | | - Oya Ustuner
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine Istanbul University‐Cerrahpasa Istanbul Turkey
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Pop DD, Hopîrtean C, Coşer F, Dan F, Zah T, Fekete Z, Chiş A, Tufăscu G, Udrea A, Mihai A. Implementation of advanced radiotherapy techniques: stereotactic body radiotherapy (SBRT) for oligometastatic patients with lung metastasis - a single institution experience. Med Pharm Rep 2022; 95:410-417. [PMID: 36506614 PMCID: PMC9694750 DOI: 10.15386/mpr-2362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/29/2021] [Accepted: 12/15/2021] [Indexed: 12/15/2022] Open
Abstract
Background and aims The treatment of oligometastatic disease has become common practice as advanced radiotherapy techniques became more available. Lung is one of the main metastatic sites for a majority of cancers and many of these patients present with a limited metastatic disease burden. For these patients, SBRT (Stereotactic Body Radiation Therapy) represents a non-invasive treatment alternative. In this report we present our experience with our first series of patients with limited metastatic disease treated with lung SBRT. The purpose of this paper is to provide a qualitative and quantitative assessment of the lung SBRT treatment process and algorithm leading up to treatment delivery in a community-based radiotherapy department. Methods We have retrospectively reviewed our first series of 41 patients with lung oligometastases from various malignancies, treated using SBRT between March 2019 and December 2020. Demographic, technical and outcome data were analyzed. Results A number of 45 lung metastases (in 41 patients) were treated with SBRT during the specified time period. The median age was 65.7 years old (range 33-83). 16 patients (39%) were treated for multiple lesions and the mean number of treated lesions was 1 (range1-3). Median dose prescribed was 50 Gy /5 fractions (median BED10 =77 Gy). The median intra-fraction displacements were: Vertical (0.23cm), Longitudinal (-0.27 cm), Lateral (-0.1 cm), Pitch [0.22°], Roll [0.15°], Rotation [0.32°]. The median session time was 40 minutes. All patients completed the prescribed course of treatment.Preliminary clinical data were recorded. With a median follow-up of 9 months, local control was recorded in all but one patient. At the last known follow-up, local control was recorded for 39 (85%) out of 45 treated lesions. Conclusion For lung SBRT, the required corrections at the time of treatment delivery are small, as long as strict protocols are implemented. Preliminary data for lung metastasis in oligometastatic patients support SBRT as a viable method of achieving high rates of early local control. These results need to be further confirmed in a larger cohort of patients with longer follow-up.
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Affiliation(s)
- Dan Dumitru Pop
- Department of Radiation Oncology, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Claudiu Hopîrtean
- Department of Radiation Oncology, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Flavius Coşer
- Department of Radiation Oncology, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Florina Dan
- Department of Radiation Oncology, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Teodor Zah
- IOCN Oncology Institute “Prof. Dr. Ion Chiricuta” Cluj-Napoca, Romania
| | - Zsolt Fekete
- IOCN Oncology Institute “Prof. Dr. Ion Chiricuta” Cluj-Napoca, Romania,Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Aurel Chiş
- Department of Medical Physics, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Gabriela Tufăscu
- Department of Medical Physics, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Adrian Udrea
- Department of Medical Oncology, Medisprof Cancer Center, Cluj-Napoca, Romania
| | - Alina Mihai
- Department Radiotherapy, Beacon Hospital, Beacon Court, Sandyford, Dublin, Ireland
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Popita AR, Lisencu C, Rusu A, Popita C, Cainap C, Irimie A, Resiga L, Munteanu A, Fekete Z, Badea R. MRI Evaluation of Complete and Near-Complete Response after Neoadjuvant Therapy in Patients with Locally Advanced Rectal Cancer. Diagnostics (Basel) 2022; 12:diagnostics12040921. [PMID: 35453969 PMCID: PMC9027294 DOI: 10.3390/diagnostics12040921] [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: 03/14/2022] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 12/04/2022] Open
Abstract
Purpose To evaluate MRI performance in restaging locally advanced rectal cancers (LARC) after neoadjuvant chemoradiotherapy (nCRT) and interobserver agreement in identifying complete response (CR) and near-complete response (nCR). Methods 40 patients with CR and nCR on restaging MRI, surgery and/or endoscopy were enrolled. Two radiologists independently scored the restaging MRI and reported the presence of split scar sign (SSS) and MRI tumor regression grade (mrTRG). Diagnostic accuracy and ROC curves were calculated for single and combined sequences, with inter-reader agreement. Results Diagnostic performance was good for detecting CR and weaker for nCR. T2WI had the highest AUCs among individual sequences. There was a significant positive correlation between SSS and CR, with high Sp (89.5%/73.7%) and PPV (90%/79.2%) for both Readers. Similar accuracy rates were observed for the combination of sequences, with AUCs of 0.828–0.847 for CR and 0.690–0.762 for nCR. Interobserver agreement was strong for SSS, moderate for T2WI, weak for the combination of sequences. Conclusions Restaging MRI had good diagnostic performance in identifying CR and nCR. SSS had high Sp and PPV in diagnosing CR, with a strong level of interobserver agreement. T2WI with DWI was the optimal combination of sequences for selecting good responders.
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Affiliation(s)
- Anca-Raluca Popita
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
- Medical Imaging Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400162 Cluj-Napoca, Romania;
| | - Cosmin Lisencu
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
- Oncology Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400015 Cluj-Napoca, Romania
| | - Adriana Rusu
- Diabetes and Nutrition Diseases Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania;
| | - Cristian Popita
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
| | - Calin Cainap
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
- Oncology Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400015 Cluj-Napoca, Romania
- Correspondence: ; Tel.: +40-026-459-8363
| | - Alexandru Irimie
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
- Oncology Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400015 Cluj-Napoca, Romania
| | - Liliana Resiga
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
| | - Alina Munteanu
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
| | - Zsolt Fekete
- “Ion Chiricuţă” Oncology Institute, 400015 Cluj-Napoca, Romania; (A.-R.P.); (C.L.); (C.P.); (A.I.); (L.R.); (A.M.); (Z.F.)
- Oncology Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400015 Cluj-Napoca, Romania
| | - Radu Badea
- Medical Imaging Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400162 Cluj-Napoca, Romania;
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10
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Crintea A, Dutu AG, Constantin AM, Fekete Z, Samasca G, Lupan I, Florian IA, Silaghi CN, Craciun AM. The First Evaluation of Serum Levels of MGP, Gas6 and EGFR after First Dose of Chemotherapy in Lung Cancer. Biology 2022; 11:biology11010082. [PMID: 35053080 PMCID: PMC8772821 DOI: 10.3390/biology11010082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 12/26/2021] [Accepted: 01/04/2022] [Indexed: 01/16/2023]
Abstract
Simple Summary Serum levels of MGP, Gas6, vitamin K1, and EGFR were not significantly changed in response to the first cycle of chemotherapy. We found a strong correlation between MGP and VitK1 serum values, and a moderate negative correlation between VitK1 and EGFR in pre-treatment patients. The post-treatment value of EGFR is a strong independent factor that correlates positively with the Gas6 post-treatment values. Abstract Background: Vitamin K-dependent proteins (VKDPs) and the epidermal growth factor receptor (EGFR) are involved in lung cancer progression. Therefore, we aimed to study the serum concentration of Matrix Gla protein (MGP), Growth Arrest-specific 6 (Gas6), and EGFR before and after the first cycle of chemotherapy and to investigate how MGP, Gas6, and EGFR are modified after one cycle of chemotherapy. Methods: We performed an observational study on twenty patients diagnosed with lung cancer, by assessing the serum concentration of vitaminK1 (VitK1), MGP, Gas6, and EGFR using the ELISA technique before and after three weeks of the first cycle of chemotherapy. Patients were evaluated using RECIST 1.1 criteria. Results: Serum levels of MGP, Gas6, EGFR, and VK1 before and after treatment were not changed significantly. Regarding the pre-treatment correlation of the MGP values, we found a strong positive relationship between MGP and VK1 pre-treatment values (r = 0.821, 95%CI 0.523; 0.954, p < 0.001). Furthermore, there was a moderately negative correlation between VK1 and EGFR pre-treatment values, with the relationship between them being marginally significant (r = −0.430, 95%CI −0.772; 0.001, p = 0.058). Post-treatment, we found a strong positive relationship between MGP and VK1 post-treatment values (r = 0.758, 95%CI 0.436; 0.900, p < 0.001). We also found a moderate positive relationship between Gas6 and EGFR post-treatment values, but the correlation was only marginally significant (r = 0.442, p = 0.051).
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Affiliation(s)
- Andreea Crintea
- Department of Medical Biochemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (A.C.); (A.G.D.); (C.N.S.); (A.M.C.)
| | - Alina Gabriela Dutu
- Department of Medical Biochemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (A.C.); (A.G.D.); (C.N.S.); (A.M.C.)
| | - Anne-Marie Constantin
- Department of Morphological Sciences, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
- Correspondence: (A.-M.C.); (G.S.)
| | - Zsolt Fekete
- Zsolt Fekete, Department of Oncology, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania;
| | - Gabriel Samasca
- Department of Immunology, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
- Correspondence: (A.-M.C.); (G.S.)
| | - Iulia Lupan
- Interdisciplinary Institute of BioNanoScience, 400006 Cluj-Napoca, Romania;
| | - Ioan Alexandru Florian
- Department of Neurosurgery, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania;
| | - Ciprian Nicolae Silaghi
- Department of Medical Biochemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (A.C.); (A.G.D.); (C.N.S.); (A.M.C.)
| | - Alexandra Marioara Craciun
- Department of Medical Biochemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (A.C.); (A.G.D.); (C.N.S.); (A.M.C.)
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11
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Moldovan TR, Căinap C, Fekete Z, Puşcaş E, Roman A, Buiga R, Olteanu D, Bota M, Căinap S, Bochiş O. Signet ring cell gastric carcinoma with breast and leptomeningeal metastases: a case report. Med Pharm Rep 2022; 95:88-91. [PMID: 35720245 PMCID: PMC9177095 DOI: 10.15386/mpr-1654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/28/2021] [Accepted: 08/30/2021] [Indexed: 01/19/2024] Open
Abstract
Gastric cancer is the 5th most common malignancy worldwide. Signet ring cell histology represents an aggressive subtype of gastric cancer, presenting at a younger age. Both breast and leptomeningeal metastases are rare locations of tumor dissemination, requiring correct and immediate diagnosis and treatment. We present a case of a 45-year old female with signet ring cell gastric carcinoma who developed both left breast and leptomeningeal metastases, requiring multiple chemotherapy lines. As far as we know, this is the first published case in literature following multiple lines of treatment for both breast and leptomeningeal metastases from signet ring cell gastric carcinoma.
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Affiliation(s)
| | - Călin Căinap
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
- Oncology Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Zsolt Fekete
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
- Oncology-Radiotherapy Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Emil Puşcaş
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
- Oncology Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrei Roman
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
- Medical Radiology Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Rareş Buiga
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
- Pathology Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Diana Olteanu
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
| | - Mădălina Bota
- Mother and Child Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Simona Căinap
- Mother and Child Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ovidiu Bochiş
- "Prof. Dr. Ion Chiricuţă" Oncology Institute, Cluj-Napoca, Romania
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12
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Fedor FZ, Paraczky C, Ravasz L, Tóth K, Borhegyi Z, Somogyvári Z, Juhász G, Fekete Z. Electrophysiological and behavioral properties of 4-aminopyridine-induced epileptic activity in mice. Biol Futur 2021; 71:427-434. [PMID: 34554464 DOI: 10.1007/s42977-020-00047-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/14/2020] [Indexed: 10/23/2022]
Abstract
4-aminopyridine (4-AP) is a widely used drug that induces seizure activity in rodents, especially in rats, although there is no consensus in the literature on the dose to be used in mice. The aim of the present study was to investigate the effect of the intraperitoneal administration of 4-AP in two doses (4 and 10 mg/kg) in vivo. EEG, movement, and video recordings were made simultaneously in male B6 mice to specify the details of the seizures and to determine whether there is a suitable non-lethal dose for seizure induction and for further molecular studies. Seizure behavior in mice differs from that seen in rats, with no characteristic stages of epileptic seizures, but with spiking and seizure activity. Seizure activity, although produced at both doses without being lethal, induced different changes of the EEG pattern. Smaller dose induced a lower amplitude seizure activity, decreased spiking activity and later onset of seizures, while higher dose induced a much more intense brain seizure activity and severe trembling. It is concluded that the intraperitoneal administration of 4-AP at a dose of 10 mg/kg induces explicit seizure activity in mice which is repeatable and can be suitable for further molecular research.
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Affiliation(s)
- F Z Fedor
- Doctoral School of Chemical Engineering and Material Sciences, University of Pannonia, Veszprém, 8200, Hungary. .,ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, Eötvös Loránd University, Budapest, 1117, Hungary.
| | - C Paraczky
- Institute of Experimental Medicine, Budapest, 1083, Hungary
| | - L Ravasz
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, Eötvös Loránd University, Budapest, 1117, Hungary
| | - K Tóth
- Laboratory of Molecular Neuroendocrinology, Institute of Experimental Medicine, 1083, Budapest, Hungary
| | - Z Borhegyi
- Department of Biochemistry, Eötvös Loránd University, Budapest, 1117, Hungary
| | - Z Somogyvári
- Theoretical Neuroscience and Complex Systems Research Group, Department of Computational Sciences, Wigner Research Centre for Physics, Budapest, 1121, Hungary
| | - G Juhász
- Department of Biochemistry, Eötvös Loránd University, Budapest, 1117, Hungary
| | - Z Fekete
- Research Group for Implantable Microsystems, Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, 1083, Hungary.,Centre for Energy Research, Budapest, 1121, Hungary
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13
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Csernyus B, Szabó Á, Fiáth R, Zátonyi A, Lázár C, Pongrácz A, Fekete Z. A multimodal, implantable sensor array and measurement system to investigate the suppression of focal epileptic seizure using hypothermia. J Neural Eng 2021; 18. [PMID: 34280911 DOI: 10.1088/1741-2552/ac15e6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/19/2021] [Indexed: 11/12/2022]
Abstract
Objective.Local cooling of the brain as a therapeutic intervention is a promising alternative for patients with epilepsy who do not respond to medication.In vitroandin vivostudies have demonstrated the seizure-suppressing effect of local cooling in various animal models. In our work, focal brain cooling in a bicuculline induced epilepsy model in rats is demonstrated and evaluated using a multimodal micro-electrocorticography (microECoG) device.Approach.We designed and experimentally tested a novel polyimide-based sensor array capable of recording microECoG and temperature signals concurrently from the cortical surface of rats. The effect of cortical cooling after seizure onset was evaluated using 32 electrophysiological sites and eight temperature sensing elements covering the brain hemisphere, where injection of the epileptic drug was performed. The focal cooling of the cortex right above the injection site was accomplished using a miniaturized Peltier chip combined with a heat pipe to transfer heat. Control of cooling and collection of sensor data was provided by a custom designed Arduino based electronic board. We tested the experimental setup using an agar gel modelin vitro, and thenin vivoin Wistar rats.Main results.Spatial variation of temperature during the Peltier controlled cooling was evaluated through calibrated, on-chip platinum temperature sensors. We found that frequency of epileptic discharges was not substantially reduced by cooling the cortical surface to 30 °C, but was suppressed efficiently at temperature values around 20 °C. The multimodal array revealed that seizure-like ictal events far from the focus and not exposed to high drop in temperature can be also inhibited at an extent like the directly cooled area.Significance.Our results imply that not only the absolute drop in temperature determines the efficacy of seizure suppression, and distant cortical areas not directly cooled can be influenced.
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Affiliation(s)
- B Csernyus
- Research Group for Implantable Microsystems, Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Á Szabó
- Research Group for Implantable Microsystems, Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary.,Roska Tamás Interdisciplinary Doctoral School, Pázmány Péter Catholic University, Budapest, Hungary
| | - R Fiáth
- Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Budapest, Hungary
| | - A Zátonyi
- Research Group for Implantable Microsystems, Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - C Lázár
- Microsystems Laboratory, Institute of Technical Physics and Material Sciences, Center for Energy Research, Budapest, Hungary
| | - A Pongrácz
- Research Group for Implantable Microsystems, Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Z Fekete
- Research Group for Implantable Microsystems, Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
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14
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Fedor FZ, Zátonyi A, Cserpán D, Somogyvári Z, Borhegyi Z, Juhász G, Fekete Z. Application of a flexible polymer microECoG array to map functional coherence in schizophrenia model. MethodsX 2020; 7:101117. [PMID: 33194564 PMCID: PMC7644754 DOI: 10.1016/j.mex.2020.101117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 10/19/2020] [Indexed: 02/03/2023] Open
Abstract
Anatomically, connections form the fundamental brain network, functionally the different types of oscillatory electric activities are creating a temporarily connected fraction of the anatomical connectome generating an output to the motor system. Schizophrenia can be considered as a connectome disease, in which the sensory input generates a schizophrenia specific temporary connectome and the signal processing becomes diseased showing hallucinations and adverse behavioral reactions. In this work, flexible, 32-channel polymer microelectrode arrays fabricated by the authors are used to map the functional coherence on large cortical areas during physiological activities in a schizophrenia model in rats.-Fabrication of a flexible microECoG array is shown.-Protocol to use a flexible microECoG is demonstrated to characterize connectome diseases in rats.-Customized method to analyze the functional coherence between different cortical areas during visually evoked potential is detailed.-R-based implementation of the analysis method is presented.
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Affiliation(s)
- F Z Fedor
- Doctoral School of Chemical Engineering and Material Sciences, Pannon University, Veszprém, Hungary.,ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, Eötvös Loránd University, Budapest, Hungary.,Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - A Zátonyi
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, Eötvös Loránd University, Budapest, Hungary.,Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary.,Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - D Cserpán
- Theoretical Neuroscience and Complex Systems Research Group, Department of Computational Sciences, Wigner Research Centre for Physics, Budapest, Hungary
| | - Z Somogyvári
- Theoretical Neuroscience and Complex Systems Research Group, Department of Computational Sciences, Wigner Research Centre for Physics, Budapest, Hungary
| | - Z Borhegyi
- Department of Biochemistry, Eötvös Loránd University, Budapest, Hungary
| | - G Juhász
- Department of Biochemistry, Eötvös Loránd University, Budapest, Hungary
| | - Z Fekete
- Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary.,Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
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15
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Abstract
Infrared neuromodulation (INM) is a branch of photobiomodulation that offers direct or indirect control of cellular activity through elevation of temperature in a spatially confined region of the target tissue. Research on INM started about 15 ago and is gradually attracting the attention of the neuroscience community, as numerous experimental studies have provided firm evidence on the safe and reproducible excitation and inhibition of neuronal firing in both in vitro and in vivo conditions. However, its biophysical mechanism is not fully understood and several engineered interfaces have been created to investigate infrared stimulation in both the peripheral and central nervous system. In this review, recent applications and present knowledge on the effects of INM on cellular activity are summarized, and an overview of the technical approaches to deliver infrared light to cells and to interrogate the optically evoked response is provided. The micro- and nanoengineered interfaces used to investigate the influence of INM are described in detail.
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Affiliation(s)
- Z Fekete
- Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest 1083, Hungary. Author to whom any correspondence should be addressed
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16
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Zátonyi A, Madarász M, Szabó Á, Lőrincz T, Hodován R, Rózsa B, Fekete Z. Transparent, low-autofluorescence microECoG device for simultaneous Ca2+imaging and cortical electrophysiologyin vivo. J Neural Eng 2020; 17:016062. [DOI: 10.1088/1741-2552/ab603f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Körmendy L, Zsarnóczay G, Cattaneo P, Cantoni C, Consiglteri C, Casagrande G, Savio G, Wenzel S, Kühne M, Bálint G, Pactheco E, Gaugecz J, Gimesi A, Herman A, Fekete Z, Juhász S, Szentgyörgyi M, Major-Földi K, Szabó AS, Simon A, Farkas J. Modified Acid Phosphatase Assay for Assessing the Extent of Heating of Canned Picnics and Hams: Interlaboratory Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/78.5.1205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Determination of acid phosphatase (E.C. 3.1.3.2.) activity in meat and meat products Is based on spectrophotometric measurement of free phenol released from phenyl phosphate substrate during enzyme catalysis under prescribed conditions. Precision parameters of a new modified phosphatase assay, proposed for determination of extent of heating of canned picnics and hams, were evaluated in an interlaboratory study with 10 (1 German, 2 Italian, and 7 Hungarian) participating laboratories. The test materials were 5 lean meat batters subjected to different heat treatments (i.e., with different levels of phosphatase activity). The materials were presented to participants as 10 randomly coded samples (2 blind replicates of each material). The interlaboratory study was then repeated with 3 test materials and 2 blind replicates (3 × 2) prepared in the same way. The repeatability relative standard deviation (RSDr), outliers excluded, varied from 2.2 to 10.7%, and the reproducibility relative standard deviation (RSDR) varied from 12.6 to 25.3%. Results were compared with other data in the literature. The sensitivity of the new modified phosphatase assay was also compared with that of the original procedure described in USDA Chemistry Laboratory Guidebook. A higher sensitivity was observed for the method described in this paper. However, the method’s reproducibility was poorer than that of common analytical methods. Although high, the variability may still be acceptable for determining phosphatase activity to assess extent of heat treatment of canned picnics and hams.
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Affiliation(s)
- L Körmendy
- Hungarian Meat Research Institute, Gubacsi ut 6/b, 1097 Budapest, Hungary
| | | | - Patrizia Cattaneo
- Istituto di Ispezione degli Alimenti di Origine Animale Pietro Stazzi, Via Celoria, 10,20133 Milano, Italy
| | - C Cantoni
- Istituto di Ispezione degli Alimenti di Origine Animale Pietro Stazzi, Via Celoria, 10,20133 Milano, Italy
| | - C Consiglteri
- Università degli Studi, Facoltà di Economia e Commercio, Istituto di Merceologia, Via J.F. Kennedy 6,43100 Parma, and Via dell’Artigliere 1,37129 Verona, Italy
| | - G Casagrande
- Università degli Studi, Facoltà di Economia e Commercio, Istituto di Merceologia, Via J.F. Kennedy 6,43100 Parma, and Via dell’Artigliere 1,37129 Verona, Italy
| | - G Savio
- Università degli Studi, Facoltà di Economia e Commercio, Istituto di Merceologia, Via J.F. Kennedy 6,43100 Parma, and Via dell’Artigliere 1,37129 Verona, Italy
| | - S Wenzel
- Institut für Lebensmittelkunde, Fleischhygiene und Technologie, Tierärtzliche Hochschule, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - M Kühne
- Institut für Lebensmittelkunde, Fleischhygiene und Technologie, Tierärtzliche Hochschule, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Georgtna Bálint
- Meat Packing Plant of Szekszárd, Keselyüsi ut 24,7100 Szekszárd, Hungary
| | - Ertka Pactheco
- Meat Packing Plant of Szekszárd, Keselyüsi ut 24,7100 Szekszárd, Hungary
| | - Janka Gaugecz
- Technical University of Budapest, Department of Biochemistry and Food Technology, Müegyetem rkp 3, 1111 Budapest, Hungary
| | - Andrea Gimesi
- Technical University of Budapest, Department of Biochemistry and Food Technology, Müegyetem rkp 3, 1111 Budapest, Hungary
| | - Andrea Herman
- National Food Investigation Institute, Mester ut 81,1095 Budapest, Hungary
| | - Z Fekete
- National Food Investigation Institute, Mester ut 81,1095 Budapest, Hungary
| | - S Juhász
- Veterinary and Food Control Station, Lehel ut 47,1135 Budapest, Hungary
| | | | - Kamtlla Major-Földi
- University of Horticulture and Food Industry, Department of Food Chemistry and Nutrition, Somlói ut 14–16, 1118 Budapest, Hungary
| | - A S Szabó
- University of Horticulture and Food Industry, Department of Food Chemistry and Nutrition, Somlói ut 14–16, 1118 Budapest, Hungary
| | - Anna Simon
- University of Horticulture and Food Industry, Department of Refrigeration and Livestock Products Technology, Ménesi ut 44, 1118 Budapest, Hungary
| | - J Farkas
- University of Horticulture and Food Industry, Department of Refrigeration and Livestock Products Technology, Ménesi ut 44, 1118 Budapest, Hungary
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Boruzs K, Fekete Z, Dombrádi V, Bányai G, Nagy A, Horne R, Bíró K. Beliefs About Medicines: Differences in cholesterol treatment adherence among the Visegrad countries. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz187.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Raised cholesterol is a risk factor for cerebrovascular and cardiovascular diseases. New cholesterol guidelines highlight more personalized risk assessments and new cholesterol-lowering drugs for people at the highest risk for cardiovascular disease.
Methods
The aim of our study was to investigate the possible differences in the beliefs about the necessity and concerns regarding lipid-lowering drugs among the Visegrad Group countries. For this the Beliefs About Medicines Questionnaire (BMQ-Specific) was used. The statistical analyses included 235 Czech, 205 Hungarian, 200 Polish, and 200 Slovak respondents, all of who were taking cholesterol lowering drugs.
Results
After comparing the answers of the citizens of the Visegrad Group countries, no statistically significant difference could be found regarding the concerns about the lipid-lowering drugs. However, related to the beliefs in necessity, a significant difference was shown between Poland and Hungary for the benefit of Polish participants. These results suggest, that the citizens of Visegrad Group countries do not differ regarding their beliefs about the fear of the treatment, while the beliefs about benefits are the most emphasized among the Polish citizens and less among the Hungarian citizens.
Conclusions
While policy makers in the Visegrad Group countries can use the same strategy to address the concerns regarding cholesterol lowering medication, the reasons behind the difference in the beliefs in necessity should be further investigated in order to implement country specific interventions.
The research was funded by the GINOP-2.3.2-15-2016-00005 project which is co-financed by
the European Union under the European Regional Development Fund.
Key messages
No differences exist regarding the concerns for cholesterol lowering medication among the Visegrad Group countries. Concerning necessity significant differences were observed among the same countries, which prompts further research questions.
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Affiliation(s)
- K Boruzs
- Department of Health Systems Management and Quality Management in Health Care, University of Debrecen, Debrecen, Hungary
| | - Z Fekete
- Institute of Behavioral Sciences, University of Debrecen, Debrecen, Hungary
| | - V Dombrádi
- Department of Health Systems Management and Quality Management in Health Care, University of Debrecen, Debrecen, Hungary
| | - G Bányai
- Department of Health Systems Management and Quality Management in Health Care, University of Debrecen, Debrecen, Hungary
| | - A Nagy
- Department of Preventive Medicine, University of Debrecen, Debrecen, Hungary
| | - R Horne
- UCL School of Pharmacy, University College London, London, UK
| | - K Bíró
- Department of Health Systems Management and Quality Management in Health Care, University of Debrecen, Debrecen, Hungary
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Boros ÖC, Horváth ÁC, Beleznai S, Sepsi Ö, Csősz D, Fekete Z, Koppa P. Optimization of an optrode microdevice for infrared neural stimulation. Appl Opt 2019; 58:3870-3876. [PMID: 31158202 DOI: 10.1364/ao.58.003870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
Infrared light is a promising candidate for the treatment of neurodegenerative diseases. Optimizing the device parameters to achieve the best optical and mechanical performance is essential for reliable in vivo operation. In this work, mechanical strength simulations and coupled optical and thermal model were used to determine optimal design parameters for maximizing overall device efficiency. Our analysis reveals that minimizing the number of integrated optical elements and optimizing the optical path leads to a 33% relative in-coupling efficiency improvement at equal mechanical robustness. Using a symmetric optrode tip with an angle of 15°, the efficiency showed a further 17% relative improvement due to the enhancement of out-coupling at the tip. To investigate the temperature rise of the brain tissue during the infrared stimulation in the case of the optimized device, a thermal simulation with pulsed infrared excitation was developed. Our results show that the optimized device provides a temperature rise of 4.42°C as opposed to 3°C for the original setup.
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Suteu P, Fekete Z, Todor N, Nagy V. Survival and quality of life after whole brain radiotherapy with 3D conformal boost in the treatment of brain metastases. Med Pharm Rep 2019; 92:43-51. [PMID: 30957086 PMCID: PMC6448499 DOI: 10.15386/cjmed-1040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 04/13/2018] [Revised: 06/05/2018] [Accepted: 06/20/2018] [Indexed: 01/02/2023] Open
Abstract
Background Brain metastases are the most frequent intracranial neoplasms in adults. Although overall survival (OS) is an important endpoint in patients receiving radiotherapy, given their poor life expectancy in general, quality of life is becoming an increasingly useful endpoint. Objectives: to evaluate whole brain radiotherapy (WBRT) with 3D conformal boost in brain metastases patients with regard to OS and quality of life. Methods During April 2015-May 2017, a total of 35 patients with ≤5, previously untreated, inoperable brain metastases were included prospectively. All patients underwent WBRT followed by 3D conformal boost to the metastatic lesions. EORTC quality of life questionnaires QLQ-C30 and QLQ-BN20 were used at baseline and at end of treatment. The mean initial and final scores were compared using Student test. One-year OS with brain metastases was computed with Kaplan Maier method. Results Median survival with brain metastases was 4.43 months (0.73-78.53). The one-year OS for patients with one metastasis was 42% versus 15% for more than one (p<0.04). The presence of extracerebral metastases significantly decreased OS from 39% without extracerebral metastases to 19%. (p<0.05). Quality of life improved significantly in several functional domains: physical (48 vs 60.29), role functioning (28.1 vs 44.7), emotional (47.1 vs 80.2), global health status (40.9 vs 62.3). Symptom scores decreased significantly in most items, corresponding to an improvement in the symptom burden: headache (61.9 vs 0.9), nausea and vomiting (45.7 vs 7.1), visual disorder (26.3 vs 9.2), seizures (30.4 vs 0.9), motor dysfunction (46.6 vs 17.1). Symptom scores for fatigue and drowsiness increased significantly (51.1 vs 74.9, respectively 37.1 vs 70.4), indicating worsening of symptoms. Conclusions WBRT with 3D conformal boost is a feasible technique which improves quality of life in brain metastases patients. Since survival is limited, the assessment of quality of life is a good indicator of the treatment outcome.
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Affiliation(s)
- Patricia Suteu
- Oncology-Radiotherapy Department, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Romania
| | - Zsolt Fekete
- Oncology-Radiotherapy Department, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Romania.,Oncology-Radiotherapy Department, "Prof. Dr. I. Chiricuta" Oncology Institute Cluj-Napoca, Romania
| | - Nicolae Todor
- Oncology-Radiotherapy Department, "Prof. Dr. I. Chiricuta" Oncology Institute Cluj-Napoca, Romania
| | - Viorica Nagy
- Oncology-Radiotherapy Department, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Romania.,Oncology-Radiotherapy Department, "Prof. Dr. I. Chiricuta" Oncology Institute Cluj-Napoca, Romania
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Chirila M, Eniu D, Todor N, Nagy V, Galatir M, Coza D, Cernea V, Martin D, Fekete Z. Outcomes and prognostic factors for angiosarcoma: A 19-year single institution experience. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.049] [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: 11/13/2022] Open
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22
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Bérces Z, Pomothy J, Horváth ÁC, Kőhidi T, Benyei É, Fekete Z, Madarász E, Pongrácz A. Effect of nanostructures on anchoring stem cell-derived neural tissue to artificial surfaces. J Neural Eng 2018; 15:056030. [DOI: 10.1088/1741-2552/aad972] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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23
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Boros ÖC, Horváth ÁC, Beleznai S, Sepsi Ö, Lenk S, Fekete Z, Koppa P. Optical and thermal modeling of an optrode microdevice for infrared neural stimulation. Appl Opt 2018; 57:6952-6957. [PMID: 30129582 DOI: 10.1364/ao.57.006952] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
Infrared neural stimulation is a promising medical technique using pulsed infrared light for generating temperature-controlled firing of neurons. A combined optical and thermal model of a stimulating microtool-or so-called optrode-has been developed to investigate the amount, the spatial distribution, and the temporal behavior of the thermal excitation. Ray tracing and Fourier optics were used to describe the propagation and scattering of light in the optrode, and the finite element method was applied to model heat transfer. The scattered intensity distribution profiles were calculated based on measured surface roughness of the device and were integrated into the ray optics model. As a validation of the optical model, the simulated and measured values of the light efficiency of the microoptical system are compared. The temperature rise of the brain tissue during the infrared stimulation was estimated using the combined model. Using 30 mW total power and a single 100 ms pulse, the excitation resulted in a temperature rise of 3°C of the brain tissue. The spatial and temporal distributions of the tissue temperature are discussed in the paper. The proposed combined model is an efficient tool for the investigation and optimization of the stimulation process and for further development of the optrode configuration.
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Zátonyi A, Fedor F, Borhegyi Z, Fekete Z. In vitro and in vivo stability of black-platinum coatings on flexible, polymer microECoG arrays. J Neural Eng 2018; 15:054003. [DOI: 10.1088/1741-2552/aacf71] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Vaskó B, Juhász V, Tóth B, Kurunczi A, Fekete Z, Krisjanis Zolnerciks J, Kis E, Magnan R, Bidon-Chanal Badia A, Pastor-Anglada M, Hazai E, Bikadi Z, Fülöp F, Krajcsi P. Inhibitor selectivity of CNTs and ENTs. Xenobiotica 2018; 49:840-851. [PMID: 30022699 DOI: 10.1080/00498254.2018.1501832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The concentrative nucleoside transporters (CNT; solute carrier family 28 (SLC28)) and the equilibrative nucleoside transporters (ENT; solute carrier family 29 (SLC29)) are important therapeutic targets but may also mediate toxicity or adverse events. To explore the relative role of the base and the monosaccharide moiety in inhibitor selectivity we selected compounds that either harbor an arabinose moiety or a cytosine moiety, as these groups had several commercially available drug members. The screening data showed that more compounds harboring a cytosine moiety displayed potent interactions with the CNTs than compounds harboring the arabinose moiety. In contrast, ENTs showed a preference for compounds with an arabinose moiety. The correlation between CNT1 and CNT3 was good as five of six compounds displayed IC50 values within the threefold threshold and one displayed a borderline 4-fold difference. For CNT1 and CNT2 as well as for CNT2 and CNT3 only two of six IC50 values correlated and one displayed a borderline 4-fold difference. Interestingly, of the six compounds that potently interacted with both ENT1 and ENT2 only nelarabine displayed selectivity. Our data show differences between inhibitor selectivities of CNTs and ENTs as well as differences within the CNT family members.
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Affiliation(s)
| | | | - Beáta Tóth
- b SOLVO Biotechnology , Budaörs , Hungary
| | | | | | | | - Emese Kis
- a SOLVO Biotechnology , Szeged , Hungary
| | | | - Axel Bidon-Chanal Badia
- c Departament de Nutrició, Ciències de l'Alimentació i Gastronomia, Facultat de Farmàcia i Ciències de l'Alimentació and Institute of Biomedicine (IBUB), Campus de l'Alimentació de Torribera , Universitat de Barcelona , Santa Coloma de Gramenet , Spain
| | - Marçal Pastor-Anglada
- d Departament de Bioquímica i Biomedicina Molecular, Facultat de Biologia and Institute of Biomedicine (IBUB) , Universitat de Barcelona , Barcelona , Spain.,e Oncology Program , National Biomedical Research Institute on Liver and Gastrointestinal Diseases (CIBER EHD), Instituto de Salud Carlos III , Madrid , Spain
| | | | | | - Ferenc Fülöp
- g Institute of Pharmaceutical Chemistry, University of Szeged , Szeged , Hungary
| | - Peter Krajcsi
- a SOLVO Biotechnology , Szeged , Hungary.,h Department of Morphology and Physiology, Faculty of Health Sciences , Semmelweis University , Budapest , Hungary.,i Faculty of Information Technology and Bionics , Pázmány Péter Catholic University , Budapest , Hungary
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Sun Myint A, Smith FM, Gollins SW, Wong H, Rao C, Whitmarsh K, Sripadam R, Rooney P, Hershman MJ, Fekete Z, Perkins K, Pritchard DM. Dose escalation using contact X-ray brachytherapy (Papillon) for rectal cancer: does it improve the chance of organ preservation? Br J Radiol 2017; 90:20170175. [PMID: 28937269 DOI: 10.1259/bjr.20170175] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE A watch and wait policy for patients with a clinical complete response (cCR) after external beam chemoradiotherapy (EBCRT) for rectal cancer is an attractive option. However, approximately one-third of tumours will regrow, which requires surgical salvage for cure. We assessed whether contact X-ray brachytherapy (CXB) can improve organ preservation by avoiding surgery for local regrowth. METHODS From our institutional database, we identified 200 of 573 patients treated by CXB from 2003 to 2012. Median age was 74 years (range 32-94), and 134 (67%) patients were males. Histology was confirmed in all patients and was staged using CT scan, MRI or endorectal ultrasound. All patients received combined CXB and EBCRT, except 17 (8.5%) who had CXB alone. RESULTS Initial cCR was achieved in 144/200 (72%) patients. 38/56 (68%) patients who had residual tumour received immediate salvage surgery. 16/144 (11%) patients developed local relapse after cCR, and 124/144 (86%) maintained cCR. At median follow up of 2.7 years, 161 (80.5%) patients were free of cancer. The main late toxicity was bleeding (28%). Organ preservation was achieved in 124/200 (62%) patients. CONCLUSION Our data suggest that CXB can reduce local regrowth to 11% compared with around 30% after EBCRT alone. Organ preservation of 62% achieved was higher than reported in most published watch and wait studies. Advances in knowledge: CXB is a promising treatment option to avoid salvage surgery for local regrowth, which can improve the chance of organ preservation in patients who are not suitable for or refuse surgery.
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Affiliation(s)
- Arthur Sun Myint
- 1 The Clatterbridge Cancer Centre , Liverpool , UK.,2 Institute of Translational Medicine , University of Liverpool , UK
| | - Fraser McLean Smith
- 3 The Royal Liverpool and Broadgreen University Hospital NHS Trust , Liverpool , UK
| | | | - Helen Wong
- 1 The Clatterbridge Cancer Centre , Liverpool , UK
| | - Christopher Rao
- 5 Department of Surgery , University Hospital, Lewisham, London , UK
| | | | - Raj Sripadam
- 1 The Clatterbridge Cancer Centre , Liverpool , UK
| | - Paul Rooney
- 3 The Royal Liverpool and Broadgreen University Hospital NHS Trust , Liverpool , UK
| | | | - Zsolt Fekete
- 7 Prof Dr Ion Chiricuţă Institute of Oncology , Cluj , Romania
| | - Kate Perkins
- 1 The Clatterbridge Cancer Centre , Liverpool , UK
| | - D Mark Pritchard
- 2 Institute of Translational Medicine , University of Liverpool , UK.,3 The Royal Liverpool and Broadgreen University Hospital NHS Trust , Liverpool , UK
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Tomuleasa C, Zaharie F, Muresan MS, Pop L, Fekete Z, Dima D, Frinc I, Trifa A, Berce C, Jurj A, Berindan-Neagoe I, Zdrenghea M. How to Diagnose and Treat a Cancer of Unknown Primary Site. J Gastrointestin Liver Dis 2017; 26:69-79. [PMID: 28338116 DOI: 10.15403/jgld.2014.1121.261.haz] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Almost one in every three patients with advanced tumors have distant metastasis at the time of clinical diagnosis. In most cases, the primary tumor site is identified immediately, within a few days. But for some patients, the primary lesion cannot be found after the initial clinical assessment. These cases are called cancers of unknown primary origin (CUPs), a clinical diagnosis very difficult to manage by physicians due to the absence of a standard-of-care for the initial therapeutic regimen, as well as due to the impossibility to include these cases in randomized clinical trials. A cancer of unknown primary site is often associated with a poor prognosis as patients are usually treated with a non-selective empirical therapy. In the current paper, we summarize both the diagnostic challenges for patients with a cancer of unknown primary site as well as the current available therapeutic options, with emphasis on the management of this unique disease entity.
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Affiliation(s)
- Ciprian Tomuleasa
- Department of Hematology,Research Center for Functional Genomics and Translational Medicine,Iuliu Hatieganu University of Medicine and Pharmacy;Department of Hematology,Ion Chiricuta Oncology Institute; Cluj-Napoca, Romania.
| | - Florin Zaharie
- Department pf Surgery,Iuliu Hatieganu University of Medicine and Pharmacy; Department of Surgery, Octavian Fodor Regional Institute of Gastroenterology and Hepatology, Cluj Napoca, Romania
| | - Mihai-Stefan Muresan
- Department pf Surgery,Iuliu Hatieganu University of Medicine and Pharmacy;Departemnt of Surgery, Ion Chiricuta Oncology Institute, Cluj-Napoca, Romania
| | - Laura Pop
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Zsolt Fekete
- Department of Radiotherapy/Oncology,Iuliu Hatieganu University of Medicine and Pharmacy;Department of Radiotherapy, Ion Chiricuta Oncology Institute, Cluj-Napoca, Romania
| | - Delia Dima
- Department of Hematology, Ion Chiricuta Oncology Institute, Cluj-Napoca, Romania
| | - Ioana Frinc
- Department of Hematology,Iuliu Hatieganu University of Medicine and Pharmacy; Department of Hematology, Ion Chiricuta Oncology Institute, Cluj-Napoca, Romania
| | - Adrian Trifa
- Departments of Hematology, Ion Chiricuta Oncology Institute;Department of Genetics,Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristian Berce
- Department of Animal Facility; Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ancuta Jurj
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihnea Zdrenghea
- Department of Hematology,Iuliu Hatieganu University of Medicine and Pharmacy; Department of Hematology, Ion Chiricuta Oncology Institute, Cluj-Napoca, Romania
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Nordanstig A, Rosengren L, Strömberg S, Österberg K, Karlsson L, Bergström G, Fekete Z, Jood K. Editor's Choice - Very Urgent Carotid Endarterectomy is Associated with an Increased Procedural Risk: The Carotid Alarm Study. Eur J Vasc Endovasc Surg 2017; 54:278-286. [PMID: 28755855 DOI: 10.1016/j.ejvs.2017.06.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 06/23/2017] [Indexed: 12/31/2022]
Abstract
OBJECTIVE/BACKGROUND The aim of the Carotid Alarm Study was to compare the procedural risk of carotid endarterectomy (CEA) performed within 48 hours with that after 48 hours to 14 days following an ipsilateral cerebrovascular ischaemic event. METHODS Consecutive patients with symptomatic carotid stenosis undergoing CEA were prospectively recruited. Time to surgery was calculated as time from the most recent ischaemic event preceding surgery. A neurologist examined patients before and, after CEA. The primary endpoint was the composite endpoint of death and/or any stroke within 30 days of the surgical procedure. The study was designed to include 600 patients, with 150 operated on within 48 hours. RESULTS From October 2010 to December 2015, 418 patients were included, of whom 75 were operated within 48 hours of an ischaemic event. The study was prematurely terminated owing to the slow recruitment rate in the group operated on within 48 hours. Patients undergoing CEA within 48 hours had a higher risk of reaching the primary endpoint than those operated on later (8.0% vs. 2.9%). Multivariate logistic regression analyses showed that CEA performed within 48 h (odds ratio [OR] 3.07; 95% confidence interval [CI] 1.04-9.09), CEA performed out of office hours (OR 3.65; 95% CI 1.14-11.67), and use of shunt (OR 4.02; 95% CI 1.36-11.93) were all independently associated with an increased risk of reaching the primary endpoint. CONCLUSION CEA performed within 48 hours was associated with a higher risk of complications compared with surgery performed 48 hours-14 days after the most recent ischaemic event.
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Affiliation(s)
- A Nordanstig
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.
| | - L Rosengren
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - S Strömberg
- Institute of Clinical Science, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - K Österberg
- Institute of Clinical Science, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - L Karlsson
- The Sahlgrenska Centre for Cardiovascular and Metabolic Research, Wallenberg Laboratory, Institute of Medicine, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - G Bergström
- The Sahlgrenska Centre for Cardiovascular and Metabolic Research, Wallenberg Laboratory, Institute of Medicine, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Z Fekete
- Department of Neurology and Rehabilitation, Södra Älvsborg Hospital, Borås, Sweden
| | - K Jood
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
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Bochis OV, Fekete Z, Vlad C, Fetica B, Leucuta DC, Busuioc CI, Irimie A. The importance of a multidisciplinary team in rectal cancer management. ACTA ACUST UNITED AC 2017; 90:279-285. [PMID: 28781524 PMCID: PMC5536207 DOI: 10.15386/cjmed-689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 01/12/2017] [Accepted: 01/30/2017] [Indexed: 01/20/2023]
Abstract
INTRODUCTION The aim of this study was to evaluate the impact of the interval between surgery and adjuvant treatments regarding the overall survival and recurrence-free survival in patients from a developing country. For stages II and III rectal cancer, international guidelines recommend neoadjuvant chemoradiotherapy (CRT) regardless of the tumor location. In the developing countries there is a shortage of radiotherapy centers, specialists, which lead to long waiting lists for radiotherapy. These problems might lead to protocol deviations. METHODS We conducted a retrospective study on 161 patients with rectal cancer treated with surgery, postoperative CRT and with or without chemotherapy for a total of 6 months, at The Oncology Institute Cluj-Napoca between 2006-2010. All patients had 5 years of follow-up. RESULTS A total of 161 patients were enrolled in this study. The majority of patients were locally advanced stages (89.44%). The well known prognostic factors, such as TNM stage, performance status, CEA serum level, perineural, vascular and lymphatic invasion, and node capsular effraction had a statistically significant influence on overall survival. In 21.12% of patients the first adjuvant treatment was started in the first 4 weeks after surgery. Only 13.04% of patients started the concomitant CRT within the limit of 6 weeks after surgery. Concerning the time between surgery and CRT, we did not observe a statistically significantly difference in OS if the radiotherapy started after the first 6 weeks (p=0.701). The OS rate for locally advanced rectal cancer patients was 69.44%. CONCLUSIONS In rectal cancer, the importance of the first therapeutic act is crucial. Following international guidelines provides a survival advantage and a better quality of life. In case of adjuvant treatment, it is recommended to start this treatment as soon as the local infrastructure allows it.
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Affiliation(s)
- Ovidiu Vasile Bochis
- Oncology Department, "Prof. Dr. Ion Chiricuta" Institute of Oncology, Cluj-Napoca, Romania.,Oncology Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Zsolt Fekete
- Radiotherapy Department, "Prof. Dr. Ion Chiricuta" Institute of Oncology, Cluj-Napoca, Romania.,Radiotherapy Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Catalin Vlad
- Surgery Department, "Prof. Dr. Ion Chiricuta" Institute of Oncology, Cluj-Napoca, Romania.,Surgery Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Bogdan Fetica
- Pathology Department, Institute of Oncology "Prof. Dr. Ion Chiricuta", Cluj-Napoca, Romania
| | - Daniel Corneliu Leucuta
- Medical Informatics and Biostatistics Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Constantin Ioan Busuioc
- Pathology Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandru Irimie
- Surgery Department, "Prof. Dr. Ion Chiricuta" Institute of Oncology, Cluj-Napoca, Romania.,Surgery Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Fekete Z, Csernai M, Kocsis K, Horváth ÁC, Pongrácz A, Barthó P. Simultaneousin vivorecording of local brain temperature and electrophysiological signals with a novel neural probe. J Neural Eng 2017; 14:034001. [DOI: 10.1088/1741-2552/aa60b1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Kozinszky Z, Devosa I, Fekete Z, Szabó D, Sikovanyecz J, Pásztor N, Keresztúri A. Knowledge of Emergency Contraceptive Pills among Hungarian Women Presenting for Induced Abortion or Seeking Emergency Contraception. Geburtshilfe Frauenheilkd 2016; 76:978-982. [PMID: 27681523 DOI: 10.1055/s-0042-105746] [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: 10/21/2022] Open
Abstract
Aim: To compare the differences in contraceptive characteristics and the knowledge of emergency contraception (ECP) among women who used ECP after unprotected intercourse and those who sought an abortion. Methods: A questionnaire survey was conducted in a Hungarian university hospital among women for whom ECP was prescribed after unprotected intercourse (n = 940) as well as women who presented for the termination of pregnancy (n = 1592) between January 1, 2005 and November 20, 2006. Their knowledge of ECP and their experience with and attitudes toward ECP use were targeted. Results: The availability of ECP was well known (87.9 %), but it was still greatly underutilized: applied by only 13 of the 1592 women who resorted to abortion. Primarily, the ECP group consisted of those who experienced a condom failure significantly more often (odds ratio [OR] = 4.1), followed by those cases where ECP applications was a consequence of not using any kind of contraception (OR = 3.8). Fewer than one third (32 %) of the abortion seekers had previously used ECP, and only one fifth knew how to obtain it. Appropriate awareness of ECP was influenced by information obtained from health-care providers (adjusted odds ratio [AOR] = 3.93) or school education (AOR = 1.82). Conclusions: More thorough education is needed to provide a deeper knowledge of ECP use during contraceptive counseling for women seeking abortion, including those contraceptive mishaps where unintended pregnancy can be prevented by ECP.
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Affiliation(s)
- Z Kozinszky
- Department of Obstetrics and Gynecology, Blekinge Hospital, Karlskrona, Sweden
| | - I Devosa
- College of Kecskemét, Teacher Training Faculty, Health Science and Health Promotion Research Group, Hungary, Kecskemét, Hungary
| | - Z Fekete
- Department of Obstetrics and Gynaecology, University of Szeged, Szeged, Hungary
| | - D Szabó
- Department of Obstetrics and Gynaecology, University of Szeged, Szeged, Hungary
| | - J Sikovanyecz
- Department of Obstetrics and Gynaecology, University of Szeged, Szeged, Hungary
| | - N Pásztor
- Department of Obstetrics and Gynaecology, University of Szeged, Szeged, Hungary
| | - A Keresztúri
- Department of Obstetrics and Gynaecology, University of Szeged, Szeged, Hungary
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Sáfár Z, Vaskó B, K. Ritchie T, Imre G, Mogyorósi K, Erd| F, Rajnai Z, Fekete Z, Szerémy P, Muka L, K. Zolnerciks J, Herédi-Szabó K, Ragueneau-Majlessi I, Krajcsi P. Investigating ABCB1-Mediated Drug-Drug Interactions: Considerations for In vitro and In vivo Assay Design. Curr Drug Metab 2016; 17:430-55. [DOI: 10.2174/1389200217666160105111304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/30/2015] [Indexed: 11/22/2022]
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Csutak C, Badea R, Bolboaca SD, Ordeanu C, Nagy VM, Fekete Z, Chiorean L, Dudea SM. Multimodal endocavitary ultrasound versus MRI and clinical findings in pre- and post-treatment advanced cervical cancer. Preliminary report. Med Ultrason 2016; 18:75-81. [PMID: 26962558 DOI: 10.11152/mu.2013.2066.181.csk] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
AIMS The aim of this study was to evaluate the use of pre and post-therapy transrectal and transvaginal ultrasonography (TRUS, TVUS) with contrast enhancement and strain elastography compared with clinical examination and magnetic resonance imaging (MRI) in the assessment of advanced stage cervical cancer. MATERIAL AND METHODS This was a prospective study, carried out over a period of nine months on subjects with advanced-stage cervical cancer (stage >/= IIB). All included patients were examined clinically and underwent abdomino-pelvic contrast enhanced MRI and multimodal US examinations (TRUS with strain elastography and contrast enhanced TVUS) at the time of diagnosis and after radiochemotherapy. Tumor size and staging at TRUS and TVUS was compared with the same data obtained by clinical examination and MRI. Pathology was the golden standard. RESULTS Eight patients accomplished the inclusion criteria. In five cases the tumor stage was identical on clinical and MRI examinations. In all cases parametrial infiltration was diagnosed by all pre-treatment examinations. No significant differences were observed in tumor size between clinical, US and MRI exams either at baseline or post-therapy, in native or post-contrast examinations. The size of the tumor evaluated pre-treatment proved to be significantly smaller post-contrast in both US and MRI examinations compared with the native images. Post-therapy, no significant differences were observed on US measured tumor dimensions when comparing native with post-contrast images. Oppositely, significant smaller dimensions were observed on post-contrast MRI compared with native scans. CONCLUSIONS TRUS is accurate in the estimation of pre-therapy cervical cancer dimension. The post therapy tumor evaluation is better performed with MRI. The use of intravenous contrast agents on both examinations did not improved the accuracy of tumor evaluation pre or post-therapy.
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Affiliation(s)
- Csaba Csutak
- Department of Radiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Radu Badea
- "Octavian Fodor" Institute of Gastroenterology and Hepatology, Department of Ultrasonography, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
| | - Sorana D Bolboaca
- Department of Medical Informatics and Biostatistics, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Claudia Ordeanu
- "Prof. Dr. Ion Chiricuta" Institute of Oncology, Department of Radiotheraphy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Viorica M Nagy
- "Prof. Dr. Ion Chiricuta" Institute of Oncology, Department of Radiotheraphy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Zsolt Fekete
- "Prof. Dr. Ion Chiricuta" Institute of Oncology, Department of Radiotheraphy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Liliana Chiorean
- "Octavian Fodor" Institute of Gastroenterology and Hepatology, Department of Ultrasonography, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Sorin M Dudea
- Department of Radiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Márton G, Baracskay P, Cseri B, Plósz B, Juhász G, Fekete Z, Pongrácz A. A silicon-based microelectrode array with a microdrive for monitoring brainstem regions of freely moving rats. J Neural Eng 2016; 13:026025. [PMID: 26924827 DOI: 10.1088/1741-2560/13/2/026025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Exploring neural activity behind synchronization and time locking in brain circuits is one of the most important tasks in neuroscience. Our goal was to design and characterize a microelectrode array (MEA) system specifically for obtaining in vivo extracellular recordings from three deep-brain areas of freely moving rats, simultaneously. The target areas, the deep mesencephalic reticular-, pedunculopontine tegmental-and pontine reticular nuclei are related to the regulation of sleep-wake cycles. APPROACH The three targeted nuclei are collinear, therefore a single-shank MEA was designed in order to contact them. The silicon-based device was equipped with 3 × 4 recording sites, located according to the geometry of the brain regions. Furthermore, a microdrive was developed to allow fine actuation and post-implantation relocation of the probe. The probe was attached to a rigid printed circuit board, which was fastened to the microdrive. A flexible cable was designed in order to provide not only electronic connection between the probe and the amplifier system, but sufficient freedom for the movements of the probe as well. MAIN RESULTS The microdrive was stable enough to allow precise electrode targeting into the tissue via a single track. The microelectrodes on the probe were suitable for recording neural activity from the three targeted brainstem areas. SIGNIFICANCE The system offers a robust solution to provide long-term interface between an array of precisely defined microelectrodes and deep-brain areas of a behaving rodent. The microdrive allowed us to fine-tune the probe location and easily scan through the regions of interest.
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Affiliation(s)
- G Márton
- Comparative Psychophysiology Department, Institute of Cognitive Neuroscience and Physiology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, 2 Magyar Tudósok Blvd., H-1117, Budapest, Hungary. MEMS Laboratory, Institute for Technical Physics and Materials Science, Centre for Energy Research, Hungarian Academy of Sciences, 29-33 Konkoly Thege Miklós st., H-1121, Budapest, Hungary
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Kalapos-Kovács B, Magda B, Jani M, Fekete Z, Szabó PT, Antal I, Krajcsi P, Klebovich I. Multiple ABC Transporters Efflux Baicalin. Phytother Res 2015; 29:1987-90. [DOI: 10.1002/ptr.5477] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/16/2015] [Accepted: 08/29/2015] [Indexed: 01/14/2023]
Affiliation(s)
| | - Balázs Magda
- Institute of Organic Chemistry, Research Centre for Natural Sciences; Hungarian Academy of Sciences (IOC RCNS HAS); Magyar Tudósok körútja 2. H-1117 Budapest Hungary
| | - Márton Jani
- SOLVO Biotechnology; Gyár utca 2. H-2040 Budaörs Hungary
| | - Zsolt Fekete
- SOLVO Biotechnology; Gyár utca 2. H-2040 Budaörs Hungary
| | - Pál T. Szabó
- Institute of Organic Chemistry, Research Centre for Natural Sciences; Hungarian Academy of Sciences (IOC RCNS HAS); Magyar Tudósok körútja 2. H-1117 Budapest Hungary
| | - István Antal
- Department of Pharmaceutics; Semmelweis University; Hőgyes E. utca 7. H-1092 Budapest Hungary
| | - Péter Krajcsi
- SOLVO Biotechnology; Gyár utca 2. H-2040 Budaörs Hungary
| | - Imre Klebovich
- Department of Pharmaceutics; Semmelweis University; Hőgyes E. utca 7. H-1092 Budapest Hungary
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Fekete Z, Rajnai Z, Nagy T, Jakab KT, Kurunczi A, Gémes K, Herédi-Szabó K, Fülöp F, Tóth GK, Czerwinski M, Loewen G, Krajcsi P. Membrane Assays to Characterize Interaction of Drugs with ABCB1. J Membr Biol 2015; 248:967-77. [DOI: 10.1007/s00232-015-9804-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 04/20/2015] [Indexed: 11/29/2022]
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Fekete Z, Vass E, Kancsev A. Theoretical Background and Treatment of Social Cognitive Impairment in Schizophrenia- What is Known and What is Needed? Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)32092-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Isella C, Terrasi A, Bellomo SE, Petti C, Galatola G, Muratore A, Mellano A, Senetta R, Cassenti A, Sonetto C, Inghirami G, Trusolino L, Fekete Z, De Ridder M, Cassoni P, Storme G, Bertotti A, Medico E. Stromal contribution to the colorectal cancer transcriptome. Nat Genet 2015; 47:312-9. [PMID: 25706627 DOI: 10.1038/ng.3224] [Citation(s) in RCA: 439] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 01/28/2015] [Indexed: 12/19/2022]
Abstract
Recent studies identified a poor-prognosis stem/serrated/mesenchymal (SSM) transcriptional subtype of colorectal cancer (CRC). We noted that genes upregulated in this subtype are also prominently expressed by stromal cells, suggesting that SSM transcripts could derive from stromal rather than epithelial cancer cells. To test this hypothesis, we analyzed CRC expression data from patient-derived xenografts, where mouse stroma supports human cancer cells. Species-specific expression analysis showed that the mRNA levels of SSM genes were mostly due to stromal expression. Transcriptional signatures built to specifically report the abundance of cancer-associated fibroblasts (CAFs), leukocytes or endothelial cells all had significantly higher expression in human CRC samples of the SSM subtype. High expression of the CAF signature was associated with poor prognosis in untreated CRC, and joint high expression of the stromal signatures predicted resistance to radiotherapy in rectal cancer. These data show that the distinctive transcriptional and clinical features of the SSM subtype can be ascribed to its particularly abundant stromal component.
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Affiliation(s)
- Claudio Isella
- 1] Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy. [2] Department of Oncology, University of Torino, Candiolo, Italy
| | - Andrea Terrasi
- Department of Oncology, University of Torino, Candiolo, Italy
| | - Sara Erika Bellomo
- 1] Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy. [2] Department of Oncology, University of Torino, Candiolo, Italy
| | - Consalvo Petti
- Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy
| | - Giovanni Galatola
- Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy
| | - Andrea Muratore
- Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy
| | - Alfredo Mellano
- Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy
| | - Rebecca Senetta
- Department of Medical Science, University of Torino, Torino, Italy
| | - Adele Cassenti
- Department of Medical Science, University of Torino, Torino, Italy
| | | | - Giorgio Inghirami
- Department of Molecular Biotechnology and Health Science, Center for Experimental Research and Medical Studies, University of Torino, Torino, Italy
| | - Livio Trusolino
- 1] Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy. [2] Department of Oncology, University of Torino, Candiolo, Italy
| | - Zsolt Fekete
- Institute of Oncology Prof. Dr. Ion Chiricuta, Cluj, Romania
| | - Mark De Ridder
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Paola Cassoni
- Department of Medical Science, University of Torino, Torino, Italy
| | - Guy Storme
- Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Andrea Bertotti
- 1] Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy. [2] Department of Oncology, University of Torino, Candiolo, Italy
| | - Enzo Medico
- 1] Candiolo Cancer Institute, Fondazione Piemontese per l'Oncologia'Istituto di Ricovero e Cura a Carattere Scientifico (FRO-IRCCS), Candiolo, Italy. [2] Department of Oncology, University of Torino, Candiolo, Italy
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Fekete Z, Németh A, Márton G, Ulbert I, Pongrácz A. Experimental study on the mechanical interaction between silicon neural microprobes and rat dura mater during insertion. J Mater Sci Mater Med 2015; 26:70. [PMID: 25631267 DOI: 10.1007/s10856-015-5401-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 10/26/2014] [Indexed: 05/06/2023]
Abstract
In vivo insertion experiments are essential to optimize novel neural implants. Our work focuses on the interaction between intact dura mater of rats and as-fabricated single-shaft silicon microprobes realized by deep reactive ion etching. Implantation parameters like penetration force and dimpling through intact dura mater were studied as a function of insertion speed, microprobe cross-section, tip angle and animal age. To reduce tissue resistance, we proposed a unique tip sharpening technique, which was also evaluated in in vivo insertion tests. By doubling the insertion speed (between 1.2 and 10.5 mm/min), an increase of 10-35% in penetration forces was measured. When decreasing the cross-section of the microprobes, penetration forces and dimpling was reduced by as much as 30-50% at constant insertion speeds. Force was noticed to gradually decrease by decreasing tip angles. Measured penetration forces through dura mater were reduced even down to 11±3 mN compared to unsharpened (49±13 mN) probes by utilizing our unique tip sharpening technique, which is very close to exerted penetration force in the case of retracted dura (5±1.5 mN). Our findings imply that age remarkably alters the elasticity of intact dura mater. The decreasing stiffness of dura mater results in a significant rise in penetration force and decrease in dimpling. Our work is the first in vivo comparative study on microelectrode penetration through intact and retracted dura mater.
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Affiliation(s)
- Z Fekete
- MEMS Lab, Institute for Technical Physics & Material Science, RCNS, HAS, P.O.Box 49, Budapest, 1525, Hungary,
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Fekete Z, Muntean AS, Hica S, Rancea A, Resiga L, Csutak C, Todor N, Nagy VM. Neoadjuvant Conformal Chemoradiation with Induction Chemotherapy for Rectal Adenocarcinoma. A Prospective Observational Study. JGLD 2014; 23:171-8. [DOI: 10.15403/jgld.2014.1121.232.zf1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Background & Aims: The purpose of this prospective observational study was to evaluate the rate andthe prognostic factors for down-staging and complete response for rectal adenocarcinoma after inductionchemotherapy and neoadjuvant chemoradiation followed by surgery, and to analyze the rate of sphinctersaving surgery.Methods: We included from March 2011 to October 2013 a number of 88 patients hospitalized with locally advanced rectal adenocarcinoma in the Prof. Dr. Ion Chiricuta Institute of Oncology, Cluj. The treatment schedule included 2-4 cycles of Oxaliplatin plus a fluoropyrimidine followed by concomitant chemoradiation with a dose of 50 Gy in 25 fractions combined with a fluoropyrimidine monotherapy.Results:The rate of T down-staging was 49.4% (40/81 evaluable patients). Independent prognostic factors for T down-staging were: age >57 years (p<0.01), cN0 (p<0.01), distance from anal verge >5 cm (p<0.01), initial CEA <6.2 ng/ml (p<0.01), higher number of chemotherapy cycles with Oxaliplatin (pROC=0.05) and protraction of radiotherapy of >35 days (p<0.01). Nine patients from 81 (11.1%) presented complete response (7 pathological and 2 clinical); the independent prognostic factors were stage cT2 versus cT3-4 (p<0.01), initial tumor size ≤3.5 cm and distance from anal verge >5 cm (p=0.03). Sixty-eight patients (79.1%) underwent radical surgery and among them 35 patients (51.5 %) had a sphincter saving procedure.Conclusions: Induction chemotherapy with neoadjuvant chemoradiation produced important down-staging in rectal adenocarcinoma. Independent prognostic factors for T down-staging were: age, cN0, distance from anal verge, initial CEA, the number of Oxaliplatin cycles and duration of radiotherapy; for complete response: cT2, initial tumor size and distance from the anal verge. Abbreviations: 5FU: 5-fluorouracil; AJCC: American Joint Committee on Cancer; AV: anal verge; CAPOX: Capecitabine plus Oxaliplatin; CCR: clinical complete response; CRT: chemoradiation; CTC4.0: Common Terminology Criteria for Adverse Events, version 4.0; ECOG: Eastern Collaborative Oncology Group; EUS: endorectal ultrasound; FOLFOX: 5-fluorouracil plus Oxaliplatin; LARC: locally advanced rectal cancer; PCR: pathological complete response; PS: performance status; PTV: planning target volume; R0: Resection, 0 (microscopically clear resection margin); ROC curve: receiver operating characteristic curve; TME: total mesorectal excision; TRG: tumor regression grade.
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Susman S, Tomuleasa C, Fekete Z, Pilato B, Irimie A, Berindan-Neagoe I. The importance of microRNAs in the stroma-breast cancer cell interplay. Cancer Biomark 2014; 14:137-44. [DOI: 10.3233/cbm-130318] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Sergiu Susman
- Departement of Morphological Sciences, University of Medicine and Pharmacy “Prof. Dr. Ion Chiricuta”, Cluj Napoca, Romania
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Cluj Napoca, Romania
| | - Ciprian Tomuleasa
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Cluj Napoca, Romania
- Department of Internal Medicine, The Johns Hopkins University Schoolof Medicine, Baltimore, MD, USA
- Department of Immunology, “Prof. Dr. Ion Chiricuta”, Cluj Napoca, Romania
| | - Zsolt Fekete
- Department of Radiotherapy, “Prof. Dr. Ion Chiricuta”, Cluj Napoca, Romania
| | - Brunella Pilato
- National Cancer Research Center, Istituto Tumori G Paolo II, Bari, Italy
| | - Alexandru Irimie
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Cluj Napoca, Romania
- Department of Surgery, “Prof. Dr. Ion Chiricuta”, Cluj Napoca, Romania
| | - Ioana Berindan-Neagoe
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, Cluj Napoca, Romania
- Department of Immunology, “Prof. Dr. Ion Chiricuta”, Cluj Napoca, Romania
- Department of Functional Genomic, “Prof. Dr. Ion Chiricuta”, Cluj Napoca, Romania
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Deák M, Bocskai M, Burcsár S, Dányi O, Fekete Z, Kovács L. Non-thromboembolic risk in systemic lupus erythematosus associated with antiphospholipid syndrome. Lupus 2014; 23:913-8. [DOI: 10.1177/0961203314531839] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 03/25/2014] [Indexed: 02/04/2023]
Abstract
Objectives We investigated the impact of secondary antiphospholipid syndrome (APS) and antiphospholipid antibody (aPL) positivity on the non-thromboembolic clinical manifestations of systemic lupus erythematosus (SLE). Methods In total, 224 patients with SLE were studied, of whom 105 were aPL-positive; 52 fulfilled the criteria for APS. SLE- and APS-related clinical and laboratory features were assesed: SLE patients with aPL or APS were compared with those without these features. Results Not only thromboembolic events, but also Coombs-positive haemolytic anaemia, thrombocytopenia and endocarditis occurred significantly more frequently in the aPL-positive than in the aPL-negative patients. In the APS + SLE subgroup, several non-thromboembolic symptoms occurred more often than in the absence of APS: pleuritis, interstitial lung disease, myocarditis, nephritis and organic brain syndrome. The mean number of major organ manifestations (1.2 vs. 0.5) and the overall number of organ manifestations (8.1 vs. 6.9) were higher in the APS + SLE patients than in those without APS ( p < 0.05). The APS + SLE subgroup more frequently required intensive immunosuppressive treatment than did the APS-negative patients ( p < 0.05). Conclusions SLE patients with aPL positivity or secondary APS also have a higher risk to develop non-thromboembolic disease manifestations in addition to the aPL-related symptoms, and are predisposed to more severe SLE manifestations.
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Affiliation(s)
- M Deák
- Department of Rheumatology, University of Szeged, Faculty of Medicine, Albert Szent-Györgyi Health Centre, Szeged, Hungary
| | - M Bocskai
- Department of Rheumatology, University of Szeged, Faculty of Medicine, Albert Szent-Györgyi Health Centre, Szeged, Hungary
| | - S Burcsár
- Department of Rheumatology, University of Szeged, Faculty of Medicine, Albert Szent-Györgyi Health Centre, Szeged, Hungary
| | - O Dányi
- Department of Rheumatology, University of Szeged, Faculty of Medicine, Albert Szent-Györgyi Health Centre, Szeged, Hungary
| | - Z Fekete
- Department of Rheumatology, University of Szeged, Faculty of Medicine, Albert Szent-Györgyi Health Centre, Szeged, Hungary
| | - L Kovács
- Department of Rheumatology, University of Szeged, Faculty of Medicine, Albert Szent-Györgyi Health Centre, Szeged, Hungary
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Kiss E, Lahm E, Vachaja J, Nagy P, Bazsó P, Fekete Z, Takácsi-Nagy Z, Pápai Z. [Our experience with targeted therapy in glioblastoma multiforme]. Magy Onkol 2013; 57:264-268. [PMID: 24353992] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 11/01/2013] [Indexed: 06/03/2023]
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive primary brain tumor in adults. The current standard therapy includes surgical resection or biopsy, followed by a combination of radiation and chemotherapy with temozolomide. After progression or recurrence there is only one recommended effective therapy, bevacizumab. Bevacizumab is a monoclonal VEGF inhibitor antibody, inhibiting the angiogenesis in highly vascularized tumors. Resent studies focused on adjuvant treatment with targeted therapy in newly diagnosed tumors. Our purpose is to evaluate the data from patients treated in our department investigate the clinical response and side effects profile and to compare these data with the international results. The applied protocol was well tolerated and side effects corresponded to the already reported ones. The median PFS and survival data correlate with those in the literature. The AVAglio study demonstrated that the addition of bevacizumab to the adjuvant therapy increased PFS significantly.
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Affiliation(s)
- Edina Kiss
- Onkológiai Osztály, MH Egészségügyi Központ, Budapest, Hungary.
| | - Erika Lahm
- Onkológiai Osztály, MH Egészségügyi Központ, Budapest, Hungary.
| | - József Vachaja
- Onkológiai Osztály, MH Egészségügyi Központ, Budapest, Hungary.
| | - Péter Nagy
- Onkológiai Osztály, MH Egészségügyi Központ, Budapest, Hungary.
| | - Péter Bazsó
- Idegsebészeti Osztály, MH Egészségügyi Központ, Budapest, Hungary
| | - Zsolt Fekete
- Idegsebészeti Osztály, MH Egészségügyi Központ, Budapest, Hungary
| | | | - Zsuzsanna Pápai
- Onkológiai Osztály, MH Egészségügyi Központ, Budapest, Hungary.
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Fekete Z, Muntean A, Irimie A, Hica S, Resiga L, Todor N, Nagy V. What is the significance of a microscopically positive resection margin in the curative-intent treatment of rectal adenocarcinoma? A retrospective study. J BUON 2013; 18:989-995. [PMID: 24344028] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE The aim of this study was to analyze the characteristics of patients with rectal cancer operated with a microscopic positive margin (R1) and thus avoid these situations or adapt treatment in these particular cases. METHODS We reviewed all the pathology data of resected specimens from patients with rectal or recto-sigmoid cancer operated with curative intent at the Institute of Oncology "Prof. Dr. Ion Chiricuta" between 2000-2011 (763 patients in 12 years) and the pathology files of patients from other institutions referred for adjuvant treatment to our hospital (318 patients). We included patients with anterior resection, Hartmann's procedure and abdomino-perineal resection, but we excluded patients with local excision and patients with R2/R1 at first, but R0 after re-resection (56 patients). We have identified 31 patients with R1, but had to exclude one case from analysis because this patient was lost to follow-up. RESULTS With surgery alone the local relapse (LR) was unavoidable. In the neoadjuvant chemoradiation (CRT) group 85.7% of the patients did not develop LR despite of R1. In the adjuvant CRT cohort 50% of the patients were LR-free at 2 years after conventional radiotherapy (p<0.01). CONCLUSION Based on these results it is concluded that a clear resection margin is extremely important for the local control of rectal cancer, because it cannot be always compensated by adjuvant CRT. In R1 cases neoadjuvant CRT seems to offer better prognosis than adjuvant CRT. To avoid R1 and its consequences a good quality control of total mesorectal excision (TME) is needed and CRT should be done before and not after surgery. R1 after primary surgery needs to be compensated by re-resection if possible, otherwise probably high dose radiotherapy with chemotherapy is needed.
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Affiliation(s)
- Z Fekete
- Iuliu Hatieganu University of Medicine and Pharmacy, Department of Oncology, Cluj-Napoca; Ion Chiricuta Institute of Oncology,Cluj-Napoca, Romania
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Herédi-Szabó K, Palm JE, Andersson TB, Pál Á, Méhn D, Fekete Z, Beéry E, Jakab KT, Jani M, Krajcsi P. A P-gp vesicular transport inhibition assay – Optimization and validation for drug–drug interaction testing. Eur J Pharm Sci 2013; 49:773-81. [DOI: 10.1016/j.ejps.2013.04.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 02/18/2013] [Accepted: 04/30/2013] [Indexed: 12/16/2022]
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46
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Deak M, Bocskai M, Burcsár S, Dányi O, Fekete Z, Kovács L. AB0410 Non-thromboembolic risk in sle associated antiphospholipid syndrome. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2732] [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: 11/04/2022]
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47
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Pongrácz A, Fekete Z, Marton G, Fiáth R, Fürjes P, Ulbert I, Battistig G. Deep-Brain Silicon Multielectrodes for Simultaneous Neural Recording and Drug Delivery. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.proeng.2012.09.138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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48
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Fürjes P, Fekete Z, Illés L, Tóth A, Battistig G, Gyurcsányi R. Effects of the Focused Ion Beam Parameters on Nanopore Milling in Solid State Membranes. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.proeng.2012.09.239] [Citation(s) in RCA: 4] [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] [Indexed: 11/28/2022]
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49
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Fekete Z, Dordai D, Kacso G, Mocan C, Dordai E. 1030 poster LDR IODINE-125 BRACHYTHERAPY AS BOOST IN CURATIVE INTENT RADIOTHERAPY OF PROSTATE CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71152-5] [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: 10/18/2022]
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50
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Fekete Z, Nagy P, Pongrácz A, Bársony I, Fürjes P. Efficiency test on the experimental design of micromachined blood separation system based on Zweifach-Fung effect. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.proeng.2011.12.306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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