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392 result(s) for "Ricci, Federica"
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Suicide in the press: an analysis of newspaper coverage of adolescent versus adult suicides in Italy
An association between sensationalized media reporting and subsequent increase in suicidal behavior has been documented, and adolescents are especially vulnerable to imitative influences. The aims of this study were to examine the characteristics of the articles reporting adult and adolescent (under age 18) suicides in the Italian press and to assess adherence to the World Health Organization (WHO) guidelines for responsible reporting. : The print versions of the three newspapers with the widest national distribution in Italy were searched for all the articles on incident suicides printed over a 7-month period (July 2022 to February 2023). Articles were examined for adherence to the WHO guidelines. Overall, 213 articles were identified, reporting on 122 individual suicide cases (88.5% adults and 11.5% adolescents). Of the articles, 78.9% were on adults and 21.1% on adolescents, with a ratio articles/suicide cases of 1.6 for adults and 3.2 for adolescents (  < 0.0001). Adolescent suicide articles had more words (mean 612.5 ± SD 275.6) than adult ones (462.1 ± 267.7,  = 0.001). Potentially harmful reporting features were present in both the adult and adolescent articles (12-82%). Few articles (0-15%) included protective features. Articles on adolescents were more adherent to the WHO guidelines for omitting specific information of suicide method and location. : Significant differences were found in the press reporting of adolescent versus adult suicides, with adolescent suicides receiving more attention in terms of the number of articles and article length. Suicide press reporting can be improved. A close collaboration between journalists and suicide prevention experts may be beneficial.
Board structure and intellectual capital efficiency: does the family firm status matter?
Building on the argument that corporate boards are responsible for the creation and leveraging of a firm’s intellectual capital (IC), this study empirically examines the relation between boardroom characteristics—namely board size, director independence, leadership structure and gender diversity—and IC efficiency. Additionally, we propose that the family firm (FF) status is a specific condition that moderates the effect of board features on IC efficiency. We test the above propositions using data on 113 nonfinancial firms continuously listed on the Italian stock exchange over the period 2011–2016. The empirical results indicate that (1) IC efficiency is significantly lower in FFs, which challenges previous research claiming that FFs have some performance advantages over non-FFs and (2) that board size and director independence have an opposite effect in FFs and non-FFs (positive and negative, respectively), suggesting that the role of individual board mechanisms as drivers of (or brakes on) IC efficiency is contingent on firm characteristics. This paper extends the empirical literature supporting the link between board composition and IC efficiency, which has been scant and inconclusive. Furthermore, the literature has seldom considered the firm contingencies potentially affecting this relation. Regarding practical implications, our findings indicate that there is no one best way of structuring corporate boards that can fit all firm conditions; specifically, the results call into question conventional ‘best practices’ of board composition that emphasise director independence, suggesting that this governance mechanism may not have a consistent effect on organisational outcomes such as IC efficiency.
Constraining black hole–galaxy scaling relations and radiative efficiency from galaxy clustering
The masses of supermassive black holes are observed to increase with either the total mass or the mean (random) velocity of the stars in their host galaxies. The origin of these correlations remains elusive due to observational systematics and biases that severely limit our knowledge of the local demography of supermassive black holes. Here, we show that the large-scale spatial distribution of local active galactic nuclei (AGN) can constrain the shape and normalization of the black hole–stellar mass relation, thus bypassing resolution-related observational biases. In turn, our results can set more stringent constraints on the AGN radiative efficiency, ε . For currently accepted values of the AGN obscured fractions and bolometric corrections, our estimated local supermassive black hole mass density favours mean ε values of ~10–20%, suggesting that the vast majority of supermassive black holes are spinning moderately to rapidly. With large-scale AGN surveys coming online, our methodology will enable even tighter constraints on the fundamental parameters that regulate the growth of supermassive black holes. The large-scale spatial distribution of local active galactic nuclei can constrain the black hole–stellar mass relation and their mean radiative efficiency to 10–20%, suggesting moderate to high spins for the vast majority of supermassive black holes.
Natech Accidents Triggered by Heat Waves
Natech accidents have an increasing relevance due to the growing number of such events and to their severe consequences. Climate change and global warming are intensifying the occurrence and the magnitude of climate-related natural events, further increasing the risk of cascading sequences triggered by natural disasters impacting industrial installations. The present study focuses on Natech triggered by heat waves. The features of this specific category of Natech events were investigated by past accident analysis, collecting an extended dataset of past events. The dataset analysis allowed the identification of the key factors that characterize these accident scenarios, such as the direct causes, the technological scenario that occurred, the substance categories, and the equipment items more frequently involved. The main direct cause of accidents resulted in an internal pressure increase, exceeding equipment design limits. Fire scenarios represent the most important category of technological scenarios that occurred. Besides equipment items handling liquid and gaseous hydrocarbons, waste storage and processing systems also resulted frequently in accidents, due to the self-decomposition and self-ignition phenomena. The analysis of past accidents also allowed identifying some lessons learned, useful to identify specific actions aimed at preventing and/or mitigating the possible occurrence of these accident scenarios.
Adults living with Duchenne muscular dystrophy: old and new challenges in a cohort of 19 patients in their third to fifth decade
Background and purpose Advances in multidisciplinary care are extending overall survival in Duchenne muscular dystrophy (DMD) patients. Our research objective was to delineate the clinical characteristics of this particular cohort and identify novel challenges associated with the disease. Methods Nineteen individuals aged 25–48 years (median 34 years) with a confirmed diagnosis of out‐of‐frame DMD gene mutation were selected. Results All patients were mechanically ventilated (5/19 via tracheostomy), with different patterns of cardiomyopathy. Swallowing and nutritional issues were frequent (median body mass index 18.95), with six cases requiring artificial enteral feeding (median age at start 29 years), as well as bone density alterations (11/19, 58%). Only 2/19 had been on long‐term prednisone therapy. Issues requiring at‐home/hospital assistance were respiratory infections (15/19, 79%), gastroenterological symptoms (9/19, 47%, including toxic megacolon and rectal perforation after repeated enemas), metabolic acidosis (2/19, 11%) and recurrent ischaemic strokes (1/19, 5%). From a social perspective, augmented‐alternative communication devices were necessary for 7/19 (37%), with most of the patients being assisted at home and 2/19 institutionalized. Eight/19 (42%) patients experienced psychiatric symptoms (median age at presentation 16 years) and 9/19 (47%) chronic pain (median age at onset 23 years), in both cases treated with psychoactive/analgesic drugs without major adverse events. The patients' subjective perception of physical health resulted in unfavourable scores, whilst the subjective assessment of mental health unexpectedly showed more positive values compared to other chronic neurological conditions. Conclusions The analysis of adults living with DMD reveals several new health‐related issues, such as the management of emergencies and safety of pharmacological treatments for psychiatric symptoms, chronic pain management, as well as an increasing caregivers burden.
Significant and Conflicting Correlation of IL-9 With Prevotella and Bacteroides in Human Colorectal Cancer
Gut microbiota (GM) can support colorectal cancer (CRC) progression by modulating immune responses through the production of both immunostimulatory and/or immunosuppressive cytokines. The role of IL-9 is paradigmatic because it can either promote tumor progression in hematological malignancies or inhibit tumorigenesis in solid cancers. Therefore, we investigate the microbiota-immunity axis in healthy and tumor mucosa, focusing on the correlation between cytokine profile and GM signature. In this observational study, we collected tumor (CRC) and healthy (CRC-S) mucosa samples from 45 CRC patients, who were undergoing surgery in 2018 at the Careggi University Hospital (Florence, Italy). First, we characterized the tissue infiltrating lymphocyte subset profile and the GM composition. Subsequently, we evaluated the CRC and CRC-S molecular inflammatory response and correlated this profile with GM composition, using Dirichlet multinomial regression. CRC samples displayed higher percentages of Th17, Th2, and Tregs. Moreover, CRC tissues showed significantly higher levels of MIP-1α, IL-1α, IL-1β, IL-2, IP-10, IL-6, IL-8, IL-17A, IFN-γ, TNF-α, MCP-1, P-selectin, and IL-9. Compared to CRC-S, CRC samples also showed significantly higher levels of the following genera: , , , , and . Finally, the abundance of spp. in CRC samples negatively correlated with IL-17A and positively with IL-9. On the contrary, spp. presence negatively correlated with IL-9. Our data consolidate antitumor immunity impairment and the presence of a distinct microbiota profile in the tumor microenvironment compared with the healthy mucosa counterpart. Relating the CRC cytokine profile with GM composition, we confirm the presence of bidirectional crosstalk between the immune response and the host's commensal microorganisms. Indeed, we document, for the first time, that spp. and spp. are, respectively, positively and negatively correlated with IL-9, whose role in CRC development is still under debate.
A Tool for the Assessment of Electromagnetic Compatibility in Active Implantable Devices: The Pacemaker Physical Twin
Background: The increasing use of technologies operating between 10 and 200 kHz, such as RFID, wireless power transfer systems, and induction cooktops, raises concerns about electromagnetic interference (EMI) with cardiac implantable electronic devices (CIEDs). The mechanisms of interaction within this frequency range have been only partially addressed by both the scientific and regulatory communities. Methods: A physical twin of a pacemaker/implantable defibrillator (PM/ICD) was developed to experimentally assess voltages induced at the input stage by low-to-mid-frequency magnetic fields. The setup simulates the two sensing modalities programmable in PMs/ICDs and allows for the analysis of different implant configurations, lead geometries, and positions within a human body phantom. Results: Characterization of the physical twin demonstrated its capability to reliably measure induced voltages in the range of 5 mV to 1.5 V. Its application enabled the identification of factors beyond the implant’s induction area that contribute to the induced voltage, such as the electrode-tissue interface and body-induced currents. Conclusions: This physical twin represents a valuable tool for experimentally validating the mechanisms of EMI in CIEDs, providing insights beyond current standards. The data obtained can serve as a reference for the validation of numerical models and patient-specific digital twins. Moreover, it offers valuable information to guide future updates and revisions of international electromagnetic compatibility standards for CIEDs.
Long-term natural history data in Duchenne muscular dystrophy ambulant patients with mutations amenable to skip exons 44, 45, 51 and 53
The aim of this international collaborative effort was to report 36-month longitudinal changes using the 6MWT in ambulant patients affected by Duchenne muscular dystrophy amenable to skip exons 44, 45, 51 or 53. Of the 92 patients included in the study, 24 had deletions amenable to skip exon 44, 27 exon 45, 18 exon 51, and 28 exon 53. Five patients with a single deletion of exon 52 were counted in both subgroups skipping exon 51 and 53. The difference between subgroups amenable to skip different exons was not significant at 12 months but became significant at both 24 (p≤0.05) and 36 months (p≤0.01). Mutations amenable to skip exon 53 had lower baseline values and more negative changes than the other subgroups while those amenable to skip exon 44 had better results both at baseline and at follow up. Deletions amenable to skip exon 45 were associated with a more variable pattern of progression. Single exon deletions were more often associated with less drastic changes but this was not always true in individual cases. Our results confirm that the progression of disease can differ between patients with different deletions, although the changes only become significant from 24 months onwards. This information is relevant because there are current clinical trials specifically targeting patients with these subgroups of mutations.
Diagnosis and treatment of Chiari malformation type 1 in children: the International Consensus Document
BackgroundChiari malformation type 1 (CM1) is a rare condition where agreed classification and treatment are still missing. The goal of this study is to achieve a consensus on the diagnosis and treatment of CM1 in children.MethodsA multidisciplinary panel formulated 57 provisional statements based on a review of the literature. Thirty-four international experts (IE) participated in a Delphi study by independently rating each statement on a 4-point Likert scale (“strongly disagree,” “disagree,” “agree,” “strongly agree”). Statements that were endorsed (“agree” or “strongly agree”) by < 75% of raters were re-formulated, or new statements were added, and another Delphi round followed (up to a maximum of three).ResultsThirty-five IE were contacted and 34 agreed to participate. A consensus was reached on 30/57 statements (52.6%) after round 1. Three statements were added, and one removed. After round 2, agreement was reached on 56/59 statements (94.9%). Finally, after round 3, which took place during the 2019 Chiari Consensus Conference (Milan, Italy), agreement was reached on 58/59 statements (98.3%) about four main sections (Definition and Classification, Planning, Surgery, Isolated Syringomyelia). Only one statement did not gain a consensus, which is the “definition of radiological failure 24 month post-surgery.”ConclusionsThe consensus document consists of 58 statements (24 on diagnosis, 34 on treatment), serving clinicians and researchers following children with CM1. There is a clear need for establishing an international network and registry and to promote collaborative studies to increase the evidence base and optimize the long-term care of this patient population.
Late-onset Pompe’s disease in pediatrics: results from an Italian national survey on 38 patients and proposal of a targeted diagnostic algorithm
Background Late-onset Pompe’s disease (LOPD) is a progressive treatable metabolic myopathy due to partial acid α-glucosidase (GAA) deficiency, with potential onset during the pediatric age. To date, Pompe’s disease is not widely included in newborn screening panels, so that clinical suspect remains essential for timely diagnosis and management. Clinical identification of LOPD was shown to be challenging in adult patients, whereas data in children and adolescents are scanty. We conducted an Italian nationwide multicentric survey in order to delineate the characteristics of LOPD in the pediatric population. This prompted us to propose a diagnostic algorithm to facilitate the identification of LOPD in pediatrics. Results The survey provided information on 38 Italian pediatric patients with a definite biochemical and molecular diagnosis of LOPD firstly suspected based on clinical approach. Nineteen patients (50%) reached medical attention because of clinical symptoms of LOPD (79% within 3 years of age; 21% at 3–18 years of age) and 19 (50%) because of incidental finding of asymptomatic hyperCKemia. All the 38 LOPD patients showed hyperCKemia (56%: range 500–1000 U/l; 18%; range 250–500 U/l; 18% range 1000–2000 U/l; 8% >2000 U/l), almost invariably accompained by concomitant hypertransaminasemia (91%). Main clinical symptoms before 3 years of age were inability to (1) sit at 8 months, (2) walk indipendently at 18 months, and (3) climb stairs at 30 months. Later pediatric presentations (3–18 years of age) were limitation to (1) get up from supine position, (2) perform sport activity, and (3) run. In symptomatic patients, diagnostic latency (i.e. the time interval between clinical onset and diagnosis of LOPD) ranged from < 1 year (58%) to 2–12 years (42%). Conclusions Clinical diagnosis of LOPD in pediatrics is challenging in spite of its frequent presentation within 3 years of age. A selective screening by measuring GAA activity on dried blood spot in the two main clinical diagnostic contexts of LOPD in pediatrics – namely (1) age-related myopathic symptoms or (2) asymptomatic hyperCKemia (and hypertransaminasemia) – will likely ensure diagnostic anticipation for those patients not screened for Pompe’s disease in the neonatal period.