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Verel-Yilmaz Y, Fernández JP, Schäfer A, Nevermann S, Cook L, Gercke N, Helmprobst F, Jaworek C, Pogge von Strandmann E, Pagenstecher A, Bartsch DK, Bartsch JW, Slater EP. Extracellular Vesicle-Based Detection of Pancreatic Cancer. Front Cell Dev Biol 2021; 9:697939. [PMID: 34368146 PMCID: PMC8343017 DOI: 10.3389/fcell.2021.697939] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 04/20/2021] [Accepted: 06/29/2021] [Indexed: 12/12/2022] Open
Abstract
Due to a grim prognosis, there is an urgent need to detect pancreatic ductal adenocarcinoma (PDAC) prior to metastasis. However, reliable diagnostic imaging methods or biomarkers for PDAC or its precursor lesions are still scarce. ADAM8, a metalloprotease-disintegrin, is highly expressed in PDAC tissue and negatively correlates with patient survival. The aim of our study was to determine the ability of ADAM8-positive extracellular vesicles (EVs) and cargo microRNAs (miRNAs) to discriminate precursor lesions or PDAC from healthy controls. In order to investigate enrichment of ADAM8 on EVs, these were isolated from serum of patients with PDAC (n = 52), precursor lesions (n = 7) and healthy individuals (n = 20). Nanoparticle Tracking Analysis and electron microscopy indicated successful preparation of EVs that were analyzed for ADAM8 by FACS. Additionally, EV cargo analyses of miRNAs from the same serum samples revealed the presence of miR-720 and miR-451 by qPCR and was validated in 20 additional PDAC samples. Statistical analyses included Wilcoxon rank test and ROC curves. FACS analysis detected significant enrichment of ADAM8 in EVs from patients with PDAC or precursor lesions compared to healthy individuals (p = 0.0005). ADAM8-dependent co-variates, miR-451 and miR-720 were also diagnostic, as patients with PDAC had significantly higher serum levels of miR-451 and lower serum levels of miR-720 than healthy controls and reached high sensitivity and specificity (AUC = 0.93 and 1.00, respectively) to discriminate PDAC from healthy control. Thus, detection of ADAM8-positive EVs and related cargo miR-720 and miR-451 may constitute a specific biomarker set for screening individuals at risk for PDAC.
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Affiliation(s)
- Yesim Verel-Yilmaz
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany
| | - Juan Pablo Fernández
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany
| | - Agnes Schäfer
- Department of Neurosurgery, Philipps University Marburg, Marburg, Germany
| | - Sheila Nevermann
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany
| | - Lena Cook
- Department of Neurosurgery, Philipps University Marburg, Marburg, Germany
| | - Norman Gercke
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany
| | - Frederik Helmprobst
- Department of Neuropathology, Philipps University Marburg, Marburg, Germany.,Core Facility-Mouse Pathology and Electron Microscopy (MPEM), Philipps University Marburg, Marburg, Germany
| | - Christian Jaworek
- Department of Neurosurgery, Philipps University Marburg, Marburg, Germany
| | | | - Axel Pagenstecher
- Department of Neuropathology, Philipps University Marburg, Marburg, Germany
| | - Detlef K Bartsch
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany
| | - Jörg W Bartsch
- Department of Neurosurgery, Philipps University Marburg, Marburg, Germany
| | - Emily P Slater
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany
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Antelo G, Hierro C, Fernández JP, Baena E, Bugés C, Layos L, Manzano JL, Caro M, Mesia R. Rectal neuroendocrine carcinoma: case report of a rare entity and perspective review of promising agents. Drugs Context 2020; 9:dic-2020-2-4. [PMID: 32477420 PMCID: PMC7233296 DOI: 10.7573/dic.2020-2-4] [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: 02/26/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 01/07/2023] Open
Abstract
Neuroendocrine neoplasms (NENs) comprise a heterogeneous group of tumours, which can be classified into neuroendocrine tumours (NETs), neuroendocrine carcinomas (NECs) and mixed neuroendocrine non-neuroendocrine neoplasms (MiNENs). To date, there is no consensus regarding the optimal therapy, which usually depends on the primary location and classification, according to morphological features of differentiation and proliferation rates. Nevertheless, multidisciplinary strategies combining medical treatments and locoregional strategies have yielded better efficacy results. Here, we report the case of a patient diagnosed with a nonfunctional rectal NECs with metastatic widespread to pelvic lymph nodes and bilateral lung metastases. The patient received three cycles of platinum-etoposide, concomitantly with palliative radiotherapy. Although CT scan after three cycles showed a significant partial response, there was an early fatal progression only 3 months after having stopped systemic therapy. As formerly described in the literature, this case highlights the aggressive behaviour of NECs, rare tumours that often present in advanced stages at diagnosis. Lately, new insights into the molecular biology of NECs have unveiled the possibility of using novel drugs, such as targeted agents or immunotherapy, in molecularly selected subgroups of patients. In this review, we discuss the current management of this rare entity and provide an overview of the most relevant molecular findings, whilst illustrating the potential value that prescreening panels can offer, searching for actionable targets (MSI/dMMR, PD-L1, BRAFv600E) to guide therapy with promising agents that could fill a void in this disease.
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Affiliation(s)
- Gabriela Antelo
- Radiation Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Cinta Hierro
- Medical Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Badalona-Applied Research Group in Oncology (B-ARGO)-Germans Trias i Pujol Institute (IGTP); Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Juan Pablo Fernández
- Pathology Department, Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Eduardo Baena
- Radiation Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Cristina Bugés
- Medical Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Badalona-Applied Research Group in Oncology (B-ARGO)-Germans Trias i Pujol Institute (IGTP); Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Laura Layos
- Medical Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Badalona-Applied Research Group in Oncology (B-ARGO)-Germans Trias i Pujol Institute (IGTP); Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - José Luis Manzano
- Medical Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Badalona-Applied Research Group in Oncology (B-ARGO)-Germans Trias i Pujol Institute (IGTP); Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Mónica Caro
- Radiation Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
| | - Ricard Mesia
- Medical Oncology Department, Catalan Institute of Oncology (ICO)-Badalona; Badalona-Applied Research Group in Oncology (B-ARGO)-Germans Trias i Pujol Institute (IGTP); Germans Trias i Pujol University Hospital (HUGTiP), Badalona, Barcelona, Spain
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Grande JA, de la Torre ML, Valente T, Fernández JP, Borrego J, Santisteban M, Cerón JC, Sánchez-Rodas D. Stratification of Metal and Sulphate Loads in Acid Mine Drainage Receiving Water Dams - Variables Regionalization by Cluster Analysis. Water Environ Res 2015; 87:626-634. [PMID: 26163498 DOI: 10.2175/106143015x14212658614793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The Sancho Reservoir (Iberian Pyrite Belt, SW Spain) is nourished by the waters of the river Meca, which is affected by acid mine drainage (AMD) processes from the abandoned Tharsis mine. The aim of the present work is to study the hydrochemical variations in this reservoir, in order to define potential stratification processes in metal load and sulphates. A stratified sampling from the surface, with one meter deep intervals to the bottom of the dam, was performed. The results show a clear stratification of temperature, pH, electric conductivity, dissolved oxygen, metal and sulphate loads associated with depth. There is an increase of metal loads at the bottom of the reservoir, though previous studies only detect iron. The proximity between pH and aluminium suggests that water chemistry is strongly influenced by aluminium precipitation processes. This indicates the buffer effect that aluminium exercises, which precipitates as amorphous or low crystalline phases, introducing hydrogen ions to the system, while alkalinity input tends to raise pH.
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Affiliation(s)
- J A Grande
- Centro de Investigación para la Ingeniería en Minería Sostenible. Escuela Técnica Superior de Ingeniería. Universidad de Huelva. Ctra. Palos de la Frontera. s/n. 21819. Palos de la Frontera. Huelva. Spain
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Forero FE, Fernández JP, Álvarez Herrera JG. Efecto de diferentes dosis de cachaza en el cultivo de maíz (Zea mays). Rev U D C A Act & Div Cient 2010. [DOI: 10.31910/rudca.v13.n1.2010.711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Karkashadze D, Fernández JP, Shubitidze F. Scatterer localization using a left-handed medium. Opt Express 2009; 17:9904-9917. [PMID: 19506640 DOI: 10.1364/oe.17.009904] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This paper explores the possibility of using the focusing property of left-handed materials to estimate the location of a visually obscured target. The field scattered by the target and measured on a surface can be considered as incident upon a left-handed half-space and should converge to a point resembling the mirror image of the scatterer's location. The results are obtained using the method of auxiliary sources as adapted to double-negative media. Two-dimensional scattering is considered, either from a single object or from several targets, using pointlike and Gaussian sources of illumination. The method gives reasonable results when the sizes of the scatterers are comparable to the wavelength.
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Affiliation(s)
- David Karkashadze
- Laboratory of Applied Electrodynamics, Tbilisi State University, Tbilisi, Georgia, USA
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