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Detailing the ultrastructure’s increase of prion protein in pancreatic adenocarcinoma

World Journal of Gastroenterology 2021年第42期27卷 7324-7339页

作者： Matteo Bianchini Maria Anita Giambelluca Maria Concetta Scavuzzo Gregorio Di Franco Simone Guadagni Matteo Palmeri NiccolòFurbetta Desirée Gianardi Niccola Funel Claudio Ricci raffaele gaeta Luca Emanuele Pollina Alfredo Falcone Caterina Vivaldi Giulio Di Candio Francesca Biagioni Carla Letizia Busceti Luca Morelli Francesco Fornai General Surgery Unit Department of Translational Research and New Technologies in Medicine and SurgeryUniversity of PisaPisa 56124Italy Human Anatomy Department of Translational Research and New Technologies in Medicine and SurgeryUniversity of PisaPisa 56124Italy Division of Surgical Pathology Department of SurgicalMedicalMolecular Pathology and Critical AreaUniversity of PisaPisa 56124Italy Division of Medical Oncology Department of Translational Research and New Technologies in Medicine and SurgeryUniversity of PisaPisa 56124Italy IRCCS Neuromed Istituto Neurologico MediterraneoPozzilli 86077Italy EndoCAS(Center for Computer Assisted Surgery) University of PisaPisa 56124Italy

BACKGROUND Recent evidences have shown a relationship between prion protein(PrPc)expression and pancreatic ductal adenocarcinoma(PDAC).Indeed,PrPc could be one of the markers explaining the aggressiveness of this ***,studies investigating the specific compartmentalization of increased PrPc expression within PDAC cells are lacking,as well as a correlation between ultrastructural evidence,ultrastructural morphometry of PrPc protein and clinical *** data,as well as the quantitative stoichiometry of this protein detected by immuno-gold,provide a significant advancement in understanding the biology of disease and the outcome of surgical *** To analyze quantitative stoichiometry and compartmentalization of PrPc in PDAC cells and to correlate its presence with prognostic data METHODS Between June 2018 and December 2020,samples from pancreatic tissues of 45 patients treated with pancreatic resection for a preoperative suspicion of PDAC at our Institution were *** the frozen section excluded a PDAC diagnosis,or the nodules were too small for adequate sampling,patients were ruled out from the present *** blotting was used to detect,quantify and compare the expression of PrPc in PDAC and control tissues,such as those of non-affected neighboring pancreatic tissue of the same *** quantify the increase of PrPc and to detect the subcellular compartmentalization of PrPc within PDAC cells,immuno-gold stoichiometry within specific cell compartments was analyzed with electron ***,an analysis of quantitative PrPc expression according to prognostic data,such as cancer stage,recurrence of the disease at 12 mo after surgery and recurrence during adjuvant chemotherapy was *** The amount of PrPc within specimen from 38 out of 45 patients was determined by semi-quantitative analysis by using Western blotting,which indicates that PrPc increases almost three-fold in tumor pancreatic tissue compared with healthy panc

关键词： Pancreatic ductal adenocarcinoma Prion protein Western blotting Electron microscopy Cellular compartmentalization Neuroinvasion

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Radiological imaging and non-surgical local treatments for cholangiocarcinoma

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Hepatoma Research 2022年第1期8卷 50-64页

作者： Angelo Della Corte Ettore Di gaeta Stephanie Steidler Francesco De Cobelli Department of Radiology IRCCS San Raffaele Scientific Institute20132 MilanItaly Vita-Salute University 20132 MilanItaly Experimental Imaging Center IRCCS San Raffaele Scientific Institute20132MilanItaly

Cholangiocarcinoma(CC)is a malignancy with a very heterogeneous spectrum of morphopathological and prognostic *** imaging is fundamental for early detection,preoperative staging,and resectability assessment,as well as early recognition of prognostic *** surgical treatment is limited by disease stage and technical *** radiology has acquired a critical function in addressing disease control and survival improvement through loco-regional therapies,specifically in the setting of intrahepatic *** this review,we will describe the current state of art of diagnostic imaging,focusing on intrahepatic CC and proximal extrahepatic CC,and delineate the available loco-regional therapies strategies for unresectable intrahepatic CC.

关键词： Cholangiocarcinoma diagnostic imaging loco-regional therapies ablation embolization

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