407 research outputs found
Immigrants living in the EU15 Countries and their Conditions of Integration in the Labour Market
This note aims at depicting the conditions of migrants in the labour market of EU15 countries and comparing their situation with that of non-migrants. By adopting a multivariate approach, our analysis finds that labour market insertion’s modalities largely differ according to migrant categories, as defined by the intersection of country of birth, country of citizenship, sex and country of residence
Charge transfer and trapping as origin of a double dip in the transfer characteristics of graphene based field-effect transistors
We discuss the origin of an additional dip other than the charge neutrality
point observed in transfer characteristics of graphene-based field-effect
transistors. The double-dip is proved to arise from charge transfer between
graphene and metal electrodes, while charge storage at the graphene/SiO2
interface enhances it. Considering different Fermi energy from the neutrality
point along the channel and partial charge pinning at the contacts, we propose
a model which explains all features in gate voltage loops.Comment: 14 pages, 5 figure
Corridor Report on Italy: The Case of Moroccan and Ukrainian Immigrants
This brief reports on the INTERACT project findings regarding Moroccan and Ukrainian migrants in Italy
The Migration and Integration of Moroccan and Ukrainian Migrants in Italy: Policies and Measures
The present report looks at the integration of Moroccan and Ukrainian migrants living in Italy. Beyond being quantitatively important in the Italian context, these two groups differ largely in terms of demographic characteristics, migration patterns and insertion modalities but also with respect to emigration and diaspora policies. Two core aspects of integration are emphasized in this report. First, integration processes are evaluated from a multi-dimensional perspective. Second, the role played by origin (and destination) country determinants in facilitating or constraining integration is investigated. Origin determinants include the ties between migrants and their country of origin, country-fixed characteristics, diaspora and emigration policies at origin and the engagement and role of non-state organisations. To this aim, three sets of data have been employed, making this report largely multidisciplinary: an in-depth analytical description of the legal and political frameworks at origin and destination, a quantitative analysis and an explorative qualitative survey. This report finds evidence that integration levels, determinants and, specifically, the role of origin factors vary largely across dimensions. In the labour market, both Moroccan and Ukrainian migrants living in Italy show high levels of integration. These extremely positive performances seem due more to destination than origin factors – namely Italy’s labour market specificities and migration history. Conversely, origin determinants presumably have a lower impact. In addition, the role played by NGOs appears relevant in helping migrants find employment – not good employment or well-remunerated employment but just employment. In the education dimension, things differ. At an international level, Ukrainians living in Italy show good levels of integration once controlled for natives’ performance. Origin determinants – in terms of conditions at home – thus seem to prevail here. Not surprisingly, the degree of integration in the “access to citizenship” dimension is connected to the degree of openness/restrictiveness of host citizenship laws and, accordingly, to the length of presence in the country. Our results confirm that Italy is still one of the countries where getting citizenship is one of the main constraints for migrants in both recent communities (Ukrainians) and well-established ones (Moroccans). Finally, cultural integration is a main obstacle to Moroccan integration, while Ukrainians are also found to be in a difficult position with respect to social and political integration. In terms of ties between migrants and their country of origin, a micro-level analysis confirms a very clear pattern: the lower the (cultural, economic, political, social) ties, the higher the level of integration. This applies – to a different extent – to all dimensions and types of ties
Self-formed Micro-Membranes
Oxide heterostructures represent a unique playground for triggering the
emergence of novel electronic states and for implementing new device concepts.
The discovery of 2D conductivity at the interface has been
linking for over a decade two of the major current research fields in Materials
Science: correlated transition-metal-oxide systems and low-dimensional systems.
A full merging of these two fields requires nevertheless the realization of
heterostructures in the form of freestanding membranes. Here
we show a completely new method for obtaining oxide hetero-membranes with
micrometer lateral dimensions. Unlike traditional thin-film-based techniques
developed for semiconductors and recently extended to oxides, the concept we
demonstrate does not rely on any sacrificial layer and is based instead on pure
strain engineering. We monitor through both real-time and post-deposition
analyses, performed at different stages of growth, the strain relaxation
mechanism leading to the spontaneous formation of curved hetero-membranes.
Detailed transmission electron microscopy investigations show that the
membranes are fully epitaxial and that their curvature results in a huge strain
gradient, each of the layers showing a mixed compressive/tensile strain state.
Electronic devices are fabricated by realizing ad hoc circuits for individual
micro-membranes transferred on silicon chips. Our samples exhibit metallic
conductivity and electrostatic field effect similar to 2D-electron systems in
bulk heterostructures. Our results open a new path for adding oxide
functionality into semiconductor electronics, potentially allowing for
ultra-low voltage gating of a superconducting transistors, micromechanical
control of the 2D electron gas mediated by ferroelectricity and
flexoelectricity, and on-chip straintronics.Comment: 8 pages, 4 figure
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Trastuzumab deruxtecan in patients in the USA and Europe with HER2-positive advanced gastric or gastroesophageal junction cancer with disease progression on or after a trastuzumab-containing regimen (DESTINY-Gastric02): primary and updated analyses from a single-arm, phase 2 study.
BACKGROUND: Approximately 15-20% of advanced gastric and gastro-oesophageal junction cancers overexpress HER2. In DESTINY-Gastric01, the HER2-targeted antibody-drug conjugate trastuzumab deruxtecan improved response and overall survival versus chemotherapy in patients from Japan and South Korea with locally advanced or metastatic HER2-positive gastric or gastro-oesophageal junction cancer whose disease progressed after two lines of previous therapy including trastuzumab. Here, we report primary and updated analyses of the single-arm, phase 2 DESTINY-Gastric02 trial, which aimed to examine trastuzumab deruxtecan in patients living in the USA and Europe. METHODS: DESTINY-Gastric02 is a single-arm, phase 2 study in adult patients from 24 study sites in the USA and Europe (Belgium, Spain, Italy, and the UK). Eligible patients were aged at least 18 years and had an Eastern Cooperative Oncology Group performance status of 0 or 1, pathologically documented unresectable or metastatic gastric or gastro-oesophageal junction cancer, progressive disease on or after first-line therapy with a trastuzumab-containing regimen, with at least one measurable lesion per Response Evaluation Criteria in Solid Tumours (version 1.1), and centrally confirmed HER2-positive disease on a postprogression biopsy. Patients were given 6·4 mg/kg of trastuzumab deruxtecan intravenously every 3 weeks until disease progression, withdrawal by patient, physician decision, or death. The primary endpoint was confirmed objective response rate by independent central review. The primary endpoint and safety were assessed in the full analysis set (ie, participants who received at least one dose of study drug). Here, we report the primary analysis of this study, with a data cutoff of April 9, 2021, and an updated analysis, with a data cutoff of Nov 8, 2021. This trial is registered with ClinicalTrials.gov, NCT04014075, and is ongoing. FINDINGS: Between Nov 26, 2019, and Dec 2, 2020, 89 patients were screened and 79 were enrolled and subsequently treated with trastuzumab deruxtecan (median age 60·7 years [IQR 52·0-68·3], 57 [72%] of 79 were male, 22 [28%] were female, 69 [87%] were White, four [5%] were Asian, one [1%] was Black or African American, one [1%] was Native Hawaiian or Pacific Islander, one had missing race, and three [4%] were other races). At the primary analysis (median follow-up 5·9 months [IQR 4·6-8·6 months]), confirmed objective response was reported in 30 (38% [95% CI 27·3-49·6]) of 79 patients, including three (4%) complete responses and 27 (34%) partial responses, as assessed by independent central review. As of data cutoff for the updated analysis (median follow-up 10·2 months [IQR 5·6-12·9]), a confirmed objective response was reported in 33 (42% [95% CI 30·8-53·4]) of 79 patients, including four (5%) complete responses and 29 (37%) partial responses, as assessed by independent central review. The most common grade 3 or worse treatment-emergent adverse events were anaemia (11 [14%]), nausea (six [8%]), decreased neutrophil count (six [8%]), and decreased white blood cell count (five [6%]). Drug-related serious treatment-emergent adverse events occurred in ten patients (13%). Deaths determined to be associated with study treatment occurred in two patients (3%) and were due to interstitial lung disease or pneumonitis. INTERPRETATION: These clinically meaningful results support the use of trastuzumab deruxtecan as second-line therapy in patients with HER2-positive advanced gastric or gastro-oesophageal junction cancer. FUNDING: Daiichi Sankyo and AstraZeneca
Optimized EGFR blockade strategies in <i>EGFR</i> addicted gastroesophageal adenocarcinomas
Purpose: Gastric and gastroesophageal adenocarcinomas represent the third leading cause of cancer mortality worldwide. Despite significant therapeutic improvement, the outcome of patients with advanced gastroesophageal adenocarcinoma is poor. Randomized clinical trials failed to show a significant survival benefit in molecularly unselected patients with advanced gastroesophageal adenocarcinoma treated with anti-EGFR agents.Experimental Design: We performed analyses on four cohorts: IRCC (570 patients), Foundation Medicine, Inc. (9,397 patients), COG (214 patients), and the Fondazione IRCCS Istituto Nazionale dei Tumori (206 patients). Preclinical trials were conducted in patient-derived xenografts (PDX).Results: The analysis of different gastroesophageal adenocarcinoma patient cohorts suggests that EGFR amplification drives aggressive behavior and poor prognosis. We also observed that EGFR inhibitors are active in patients with EGFR copy-number gain and that coamplification of other receptor tyrosine kinases or KRAS is associated with worse response. Preclinical trials performed on EGFR-amplified gastroesophageal adenocarcinoma PDX models revealed that the combination of an EGFR mAb and an EGFR tyrosine kinase inhibitor (TKI) was more effective than each monotherapy and resulted in a deeper and durable response. In a highly EGFR-amplified nonresponding PDX, where resistance to EGFR drugs was due to inactivation of the TSC2 tumor suppressor, cotreatment with the mTOR inhibitor everolimus restored sensitivity to EGFR inhibition.Conclusions: This study underscores EGFR as a potential therapeutic target in gastric cancer and identifies the combination of an EGFR TKI and a mAb as an effective therapeutic approach. Finally, it recognizes mTOR pathway activation as a novel mechanism of primary resistance that can be overcome by the combination of EGFR and mTOR inhibitors
Association of Upfront Peptide Receptor Radionuclide Therapy With Progression-Free Survival Among Patients With Enteropancreatic Neuroendocrine Tumors
open57noIMPORTANCE Data about the optimal timing for the initiation of peptide receptor radionuclide
therapy (PRRT) for advanced, well-differentiated enteropancreatic neuroendocrine tumors
are lacking.
OBJECTIVE To evaluate the association of upfront PRRT vs upfront chemotherapy or targeted
therapy with progression-free survival (PFS) among patients with advanced enteropancreatic
neuroendocrine tumors who experienced disease progression after treatment with somatostatin
analogues (SSAs).
DESIGN, SETTING, AND PARTICIPANTS This retrospective, multicenter cohort study analyzed the
clinical records from 25 Italian oncology centers for patients aged 18 years or older who had
unresectable, locally advanced or metastatic, well-differentiated, grades 1 to 3 enteropancreatic
neuroendocrine tumors and received either PRRT or chemotherapy or targeted therapy after
experiencing disease progression after treatment with SSAs between January 24, 2000, and July 1,
2020. Propensity score matching was done to minimize the selection bias.
EXPOSURES Upfront PRRT or upfront chemotherapy or targeted therapy.
MAIN OUTCOMES AND MEASURES The main outcome was the difference in PFS among patients
who received upfront PRRT vs among those who received upfront chemotherapy or targeted
therapy. A secondary outcome was the difference in overall survival between these groups. Hazard
ratios (HRs) were fitted in a multivariable Cox proportional hazards regression model to adjust for
relevant factors associated with PFS and were corrected for interaction with these factors.
RESULTS Of 508 evaluated patients (mean ([SD] age, 55.7 [0.5] years; 278 [54.7%] were male), 329
(64.8%) received upfront PRRT and 179 (35.2%) received upfront chemotherapy or targeted
therapy. The matched group included 222 patients (124 [55.9%] male; mean [SD] age, 56.1 [0.8]
years), with 111 in each treatment group. Median PFS was longer in the PRRT group than in the
chemotherapy or targeted therapy group in the unmatched (2.5 years [95%CI, 2.3-3.0 years] vs 0.7
years [95%CI, 0.5-1.0 years]; HR, 0.35 [95%CI, 0.28-0.44; P < .001]) and matched (2.2 years [95%
CI, 1.8-2.8 years] vs 0.6 years [95%CI, 0.4-1.0 years]; HR, 0.37 [95%CI, 0.27-0.51; P < .001])
populations. No significant differences were shown in median overall survival between the PRRT and chemotherapy or targeted therapy groups in the unmatched (12.0 years [95%CI, 10.7-14.1 years] vs
11.6 years [95%CI, 9.1-13.4 years]; HR, 0.81 [95%CI, 0.62-1.06; P = .11]) and matched (12.2 years [95%
CI, 9.1-14.2 years] vs 11.5 years [95%CI, 9.2-17.9 years]; HR, 0.83 [95%CI, 0.56-1.24; P = .36])
populations. The use of upfront PRRT was independently associated with improved PFS (HR, 0.37;
95%CI, 0.26-0.51; P < .001) in multivariable analysis. After adjustment of values for interaction,
upfront PRRT was associated with longer PFS regardless of tumor functional status (functioning:
adjusted HR [aHR], 0.39 [95%CI, 0.27-0.57]; nonfunctioning: aHR, 0.29 [95%CI, 0.16-0.56]), grade
of 1 to 2 (grade 1: aHR, 0.21 [95%CI, 0.12-0.34]; grade 2: aHR, 0.52 [95%CI, 0.29-0.73]), and site of
tumor origin (pancreatic: aHR, 0.41 [95%CI, 0.24-0.61]; intestinal: aHR, 0.19 [95%CI, 0.11-0.43])
(P < .001 for all). Conversely, the advantage was not retained in grade 3 tumors (aHR, 0.31; 95%CI,
0.12-1.37; P = .13) or in tumors with a Ki-67 proliferation index greater than 10% (aHR, 0.73; 95%CI,
0.29-1.43; P = .31).
CONCLUSIONS AND RELEVANCE In this cohort study, treatment with upfront PRRT in patients
with enteropancreatic neuroendocrine tumors who had experienced disease progression with SSA
treatment was associated with significantly improved survival outcomes compared with upfront
chemotherapy or targeted therapy. Further research is needed to investigate the correct strategy,
timing, and optimal specific sequence of these therapeutic options.openPusceddu, Sara; Prinzi, Natalie; Tafuto, Salvatore; Ibrahim, Toni; Filice, Angelina; Brizzi, Maria Pia; Panzuto, Francesco; Baldari, Sergio; Grana, Chiara M.; Campana, Davide; Davì, Maria Vittoria; Giuffrida, Dario; Zatelli, Maria Chiara; Partelli, Stefano; Razzore, Paola; Marconcini, Riccardo; Massironi, Sara; Gelsomino, Fabio; Faggiano, Antongiulio; Giannetta, Elisa; Bajetta, Emilio; Grimaldi, Franco; Cives, Mauro; Cirillo, Fernando; Perfetti, Vittorio; Corti, Francesca; Ricci, Claudio; Giacomelli, Luca; Porcu, Luca; Di Maio, Massimo; Seregni, Ettore; Maccauro, Marco; Lastoria, Secondo; Bongiovanni, Alberto; Versari, Annibale; Persano, Irene; Rinzivillo, Maria; Pignata, Salvatore Antonio; Rocca, Paola Anna; Lamberti, Giuseppe; Cingarlini, Sara; Puliafito, Ivana; Ambrosio, Maria Rosaria; Zanata, Isabella; Bracigliano, Alessandra; Severi, Stefano; Spada, Francesca; Andreasi, Valentina; Modica, Roberta; Scalorbi, Federica; Milione, Massimo; Sabella, Giovanna; Coppa, Jorgelina; Casadei, Riccardo; Di Bartolomeo, Maria; Falconi, Massimo; de Braud, FilippoPusceddu, Sara; Prinzi, Natalie; Tafuto, Salvatore; Ibrahim, Toni; Filice, Angelina; Brizzi, Maria Pia; Panzuto, Francesco; Baldari, Sergio; Grana, Chiara M.; Campana, Davide; Davì, Maria Vittoria; Giuffrida, Dario; Zatelli, Maria Chiara; Partelli, Stefano; Razzore, Paola; Marconcini, Riccardo; Massironi, Sara; Gelsomino, Fabio; Faggiano, Antongiulio; Giannetta, Elisa; Bajetta, Emilio; Grimaldi, Franco; Cives, Mauro; Cirillo, Fernando; Perfetti, Vittorio; Corti, Francesca; Ricci, Claudio; Giacomelli, Luca; Porcu, Luca; Di Maio, Massimo; Seregni, Ettore; Maccauro, Marco; Lastoria, Secondo; Bongiovanni, Alberto; Versari, Annibale; Persano, Irene; Rinzivillo, Maria; Pignata, Salvatore Antonio; Rocca, Paola Anna; Lamberti, Giuseppe; Cingarlini, Sara; Puliafito, Ivana; Ambrosio, Maria Rosaria; Zanata, Isabella; Bracigliano, Alessandra; Severi, Stefano; Spada, Francesca; Andreasi, Valentina; Modica, Roberta; Scalorbi, Federica; Milione, Massimo; Sabella, Giovanna; Coppa, Jorgelina; Casadei, Riccardo; Di Bartolomeo, Maria; Falconi, Massimo; de Braud, Filipp
Oltre il Segno/OltreMare
La realizzazione di un volume contenente le incisioni scelte all’interno della Scuola di Grafica d’Arte dell’Accademia di Belle Arti di Palermo, coordinata dai Proff. Giovanni D’Alessandro e Riccardo Mazzarino rappresenta motivo di orgoglio e di soddisfazione per la nostra Istituzione che costruisce i percorsi didattici dei propri corsi a partire dall’esperienza laboratoriale. L’incisione grafica è tra le tecniche artistiche più antiche ma nel contempo più contemporanee. La gestualità intrinseca al segno, che si manifesta nella carta, svela universi della visione inaspettati.(Mario Zito - Direttore dell’Accademia di Belle Arti di Palermo)
Il segno è il risultato di un gesto a volte deciso, a volte contorto, a volte leggero, i cui risultati spesso sono inattesi e sorprendenti. Il volume contiene esemplari di incisioni fortemente caratterizzanti della scuola di Grafica d’Arte che vanta all’interno del proprio corso di studi docenti-artisti che consapevoli della ricchezza del loro bagaglio esperienziale offrono agli studenti gli strumenti necessari per far sì che l’arte del saper fare artigianale, si trasformi in mera poetica artistica
Global disparities in surgeons’ workloads, academic engagement and rest periods: the on-calL shIft fOr geNEral SurgeonS (LIONESS) study
: The workload of general surgeons is multifaceted, encompassing not only surgical procedures but also a myriad of other responsibilities. From April to May 2023, we conducted a CHERRIES-compliant internet-based survey analyzing clinical practice, academic engagement, and post-on-call rest. The questionnaire featured six sections with 35 questions. Statistical analysis used Chi-square tests, ANOVA, and logistic regression (SPSS® v. 28). The survey received a total of 1.046 responses (65.4%). Over 78.0% of responders came from Europe, 65.1% came from a general surgery unit; 92.8% of European and 87.5% of North American respondents were involved in research, compared to 71.7% in Africa. Europe led in publishing research studies (6.6 ± 8.6 yearly). Teaching involvement was high in North America (100%) and Africa (91.7%). Surgeons reported an average of 6.7 ± 4.9 on-call shifts per month, with European and North American surgeons experiencing 6.5 ± 4.9 and 7.8 ± 4.1 on-calls monthly, respectively. African surgeons had the highest on-call frequency (8.7 ± 6.1). Post-on-call, only 35.1% of respondents received a day off. Europeans were most likely (40%) to have a day off, while African surgeons were least likely (6.7%). On the adjusted multivariable analysis HDI (Human Development Index) (aOR 1.993) hospital capacity > 400 beds (aOR 2.423), working in a specialty surgery unit (aOR 2.087), and making the on-call in-house (aOR 5.446), significantly predicted the likelihood of having a day off after an on-call shift. Our study revealed critical insights into the disparities in workload, access to research, and professional opportunities for surgeons across different continents, underscored by the HDI
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