Pick Topic
Review Topic
List Experts
Examine Expert
Save Expert
  Site Guide ··   
Pancreatic Neoplasms: HELP
Articles by Stefano Ugel
Based on 3 articles published since 2010
(Why 3 articles?)

Between 2010 and 2020, Stefano Ugel wrote the following 3 articles about Pancreatic Neoplasms.
+ Citations + Abstracts
1 Article Four-class tumor staging for early diagnosis and monitoring of murine pancreatic cancer using magnetic resonance and ultrasound. 2018

Dugnani, Erica / Pasquale, Valentina / Marra, Paolo / Liberati, Daniela / Canu, Tamara / Perani, Laura / De Sanctis, Francesco / Ugel, Stefano / Invernizzi, Francesca / Citro, Antonio / Venturini, Massimo / Doglioni, Claudio / Esposito, Antonio / Piemonti, Lorenzo. ·Division of Immunology, Transplantation and Infectious diseases, Diabetes Research Institute, Milan, Italy. · Experimental Imaging Center, IRCCS San Raffaele Scientific Institute, Via Olgettina, Milan, Italy. · Division of Genetics and Cell Biology, Genomic Unit for the diagnosis of human pathologies, IRCCS San Raffaele Scientific Institute, Via Olgettina, Milan, Italy. · University Hospital and Department of Medicine, Immunology Section, Verona, Italy. · Department of Pathology, IRCCS San Raffaele Scientific Institute, Via Olgettina, Milan, Italy. · Vita-Salute San Raffaele University, Milan, Italy. ·Carcinogenesis · Pubmed #30052815.

ABSTRACT: Background: The widely used genetically engineered mouse LSL-KrasG12D/+; LSL-Trp53R172H/+; Pdx-1-Cre, termed KPC, spontaneously develops pancreatic cancer mirroring all phases of the carcinogenesis but in asynchronous manner. Preclinical studies need defined criteria for the enrollment of the KPC sharing the same stage of carcinogenesis. Aim: To define a tumor-staging criteria using magnetic resonance (MR) and ultrasound (US) and then to correlate the imaging stage with overall survival of KPC mice. Methods: Forty KPC (2- to 5-month-old mice) were imaged by axial fat-saturated T2-weighted sequences at MR and by brightness mode US to establish criteria for tumor staging. Immunohistopathology was used to validate imaging. A second cohort of 25 KPC was used to correlate imaging stage with survival by Kaplan-Meier analysis. Results: We defined a four-class tumor staging system ranking from stages 1 to 4. Stage 1 was described as radiologically healthy pancreas; precursor lesions were detectable in histology only. Cystic papillary neoplasms, besides other premalignant alterations, marked stage 2 in the absence of cancer nodules. Stages 3 and 4 identified mice affected by overt pancreatic cancer with size <5 or ≥5 mm, respectively. Regarding the prognosis, this staging system correlated with disease-related mortality whatever may be the KPC age when they staged. Conclusion: This imaging-based four-class tumor staging is an effective and safe method to stage pancreatic cancer development in KPC. As a result, regardless of their age, KPC mice can be synchronized based on prognosis or on a specific phase of tumorigenesis, such as the early but already radiologically detectable one (stage 2).

2 Article Immunomodulation after radiofrequency ablation of locally advanced pancreatic cancer by monitoring the immune response in 10 patients. 2017

Giardino, Alessandro / Innamorati, Giulio / Ugel, Stefano / Perbellini, Omar / Girelli, Roberto / Frigerio, Isabella / Regi, Paolo / Scopelliti, Filippo / Butturini, Giovanni / Paiella, Salvatore / Bacchion, Matilde / Bassi, Claudio. ·Hepato-Biliary and Pancreatic Unit, Ospedale Dott. Pederzoli, Peschiera del Garda, VR, Italy. Electronic address: giardinochir@gmail.com. · LURM - Research Laboratory, University of Verona, Italy. · Immunology, University of Verona, Italy. · Ematology Research Laboratory, Vicenza Hospital, VI, Italy. · Hepato-Biliary and Pancreatic Unit, Ospedale Dott. Pederzoli, Peschiera del Garda, VR, Italy. · Pancreas Institute, University of Verona, Italy. · General Surgery Department, Pederzoli Hospital, Peschiera del Garda, VR, Italy. ·Pancreatology · Pubmed #29037917.

ABSTRACT: OBJECTIVE/BACKGROUND: RFA of pancreatic cancer has been demonstrated to be feasible and safe with a positive impact on survival. The aim was to investigate whether an immune reaction is activated after locally advanced pancreatic cancer (LAPC) ablation. METHODS: Peripheral Blood samples were obtained preoperatively and on post-operative days 3-30. Evaluated parameters were: cells [CD4 RESULTS: Ten patients were enrolled. CD4 CONCLUSIONS: This study provides the first evidence of RFA-based immunomodulation in LAPC. We observed a general activation of adaptive response along with a decrease of immunosuppression. Furthermore, most cells showed prolonged activation some weeks after the procedure, suggesting true immunomodulation rather than a normal inflammatory response.

3 Article Interfacing polymeric scaffolds with primary pancreatic ductal adenocarcinoma cells to develop 3D cancer models. 2014

Ricci, Claudio / Mota, Carlos / Moscato, Stefania / D'Alessandro, Delfo / Ugel, Stefano / Sartoris, Silvia / Bronte, Vincenzo / Boggi, Ugo / Campani, Daniela / Funel, Niccola / Moroni, Lorenzo / Danti, Serena. ·a Department of Pathology and Diagnostics ; University of Verona ; Verona , Italy. ·Biomatter · Pubmed #25482337.

ABSTRACT: We analyzed the interactions between human primary cells from pancreatic ductal adenocarcinoma (PDAC) and polymeric scaffolds to develop 3D cancer models useful for mimicking the biology of this tumor. Three scaffold types based on two biocompatible polymeric formulations, such as poly(vinyl alcohol)/gelatin (PVA/G) mixture and poly(ethylene oxide terephthalate)/poly(butylene terephthalate) (PEOT/PBT) copolymer, were obtained via different techniques, namely, emulsion and freeze-drying, compression molding followed by salt leaching, and electrospinning. In this way, primary PDAC cells interfaced with different pore topographies, such as sponge-like pores of different shape and size or nanofiber interspaces. The aim of this study was to investigate the influence played by the scaffold architecture over cancerous cell growth and function. In all scaffolds, primary PDAC cells showed good viability and synthesized tumor-specific metalloproteinases (MMPs) such as MMP-2, and MMP-9. However, only sponge-like pores, obtained via emulsion-based and salt leaching-based techniques allowed for an organized cellular aggregation very similar to the native PDAC morphological structure. Differently, these cell clusters were not observed on PEOT/PBT electrospun scaffolds. MMP-2 and MMP-9, as active enzymes, resulted to be increased in PVA/G and PEOT/PBT sponges, respectively. These findings suggested that spongy scaffolds supported the generation of pancreatic tumor models with enhanced aggressiveness. In conclusion, primary PDAC cells showed diverse behaviors while interacting with different scaffold types that can be potentially exploited to create stage-specific pancreatic cancer models likely to provide new knowledge on the modulation and drug susceptibility of MMPs.