188,780 results on '"Cristina P"'
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202. Assessing impending hazards from summit eruptions: the new probabilistic map for lava flow inundation at Mt. Etna
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Francesco Zuccarello, Giuseppe Bilotta, Gaetana Ganci, Cristina Proietti, and Annalisa Cappello
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Medicine ,Science - Abstract
Abstract The development of probabilistic maps associated with lava flow inundation is essential to assess hazard in open vent volcanoes, especially those that have highly urbanized flanks. In this study we present the new lava flow hazard map linked to the summit eruptions of Mt. Etna, which has been developed using a probabilistic approach that integrates statistical analyses of the volcanological historical data with numerical simulations of lava flows. The statistical analysis of volcanological data (including vent location, duration and lava volumes) about all summit eruptions occurred since 1998 has allowed us both to estimate the spatiotemporal probability of future vent opening and to extract the effusion rate curves for lava flow modelling. Numerical simulations were run using the GPUFLOW model on a 2022 Digital Surface Model derived from optical satellite images. The probabilistic approach has been validated through a back-analysis by calculating the fit between the expected probabilities of inundation and the lava flows actually emplaced during the 2020-2022 period. The obtained map shows a very high probability of inundation of lava flows emitted at vents linked to the South East Crater, according to the observation of the eruptive dynamics in the last decades.
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- 2023
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203. Programmable catalysis by support polarization: elucidating and breaking scaling relations
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Seongjoo Jung, Cristina Pizzolitto, Pierdomenico Biasi, Paul J. Dauenhauer, and Turan Birol
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Science - Abstract
Abstract The Sabatier principle and the scaling relations have been widely used to search for and screen new catalysts in the field of catalysis. However, these powerful tools can also serve as limitations of catalyst control and breakthrough. To overcome this challenge, this work proposes an efficient method of studying catalyst control by support polarization from first-principles. The results demonstrate that the properties of catalysts are determined by support polarization, irrespective of the magnitude of spontaneous polarization of support. The approach enables elucidating the scaling relations between binding energies at various polarization values of support. Moreover, we observe the breakdown of scaling relations for the surface controlled by support polarization. By studying the surface electronic structure and decomposing the induced charge into contributions from different atoms and orbitals, we identify the inherent structural property of the interface that leads to the breaking of the scaling relations. Specifically, the displacements of the underlying oxide support impose its symmetry on the catalyst, causing the scaling relations between different adsorption sites to break.
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- 2023
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204. PARTICULARITĂȚILE MORFOLOGICE ALE MASIVULUI MAXILO-FACIAL LA COPII CU DESPICĂTURI LABIO-MAXILO-PALATINE
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Cristina POȘTARU, Victor BOBEICO, Silvia RAILEAN, Gheorghe GRANCIUC, and Diana UNCUȚA
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Medicine (General) ,R5-920 ,Internal medicine ,RC31-1245 ,Other systems of medicine ,RZ201-999 ,Public aspects of medicine ,RA1-1270 - Abstract
Rezumat. Introducere. Variații considerabile de anomalii dento-maxilare au fost depistate la copii cu despicături labiomaxilo-palatine. Anomalii dento-maxilare de clasa III s-au constat mai frecvent datorită factorilor congenitali, cum este potențialul de creștere maxilo-mandibulară precum și de severitatea defectului. [1,2,7] Material și metode. În acest studiu au fost analizate 15 teleradiografii conform metodelor propuse de McNamara, Tweed,RothJarabakși Steiner și au fost calculați 30 de parametri cefalometrici pentru fiecare pacient cu despicatura unilaterala completa (atâtea pe stanga, și atâtea pe dreapta). Datele obținute în urma măsurărilor sunt prezentate în tabelele corespunzătoare fiecărei metode. Rezultate. Lungimea maxilarului superior și inferior (Cond-A, Cond-Gn) semnificativ statistic micșorat comparativ cu valorile medii normale. Pragul de semnficiație înregistrat pentru aceste indice demonstrează abateri semnificative a înălțimei anterioare a feței s-a constat semnificativ statistice micșorată prin valoarea p
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- 2023
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205. HEMANGIOAMELE INTRAOSOASE LA COPII. PARTICULARITĂȚI DE DIAGNOSTIC ȘI TRATAMENT. PREZENTARE DE CAZ. REVIU DE BIBLIOGRAFIE
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Silvia RAILEAN, Dănis URSU, Aurelia SPINEI, and Cristina POȘTARU
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hemangiom ,intraos ,maxila ,mandibula ,copii ,raport de caz ,Medicine (General) ,R5-920 ,Internal medicine ,RC31-1245 ,Other systems of medicine ,RZ201-999 ,Public aspects of medicine ,RA1-1270 - Abstract
Hemangioamele oaselor maxilare la copii sunt extreme de rare, dar pot avea efect e edverse severe.Scopul. În scopul acestei lucrări a fost de a atenționa problemele de diagnostic a hemangioamelor la copiii cu probleme de coagulopatie, în special cele osoase. Materiale și metode. Se prezintă un caz deosebit de hemangiom a mandibulei, la un adolescent cu patologie de coagulare. Rezultate. Reviul de literatură și cazul present a constatat multe problem identice, dar și particularități de diagnostic și tratament. Concluzie. Hemangioamele osoase mandibulare sunt formațiuni vasculare rare. Diagnosticul hemangioamelor la copii eeste dificil dun cauza incidenței rare, particularităților de tratament, cît și din cauza semnelor clinice ascunse. Examenul general este necesar pentru toate formele de hemangioame și mai ales pentru cele cu localizare în oasele maxilarelor. Problemele de coagulopatii complică mult alegerea metodelor de tratament. Tratamentul medicamentos este obțiunea favorabilă din toate obțiunile de tratament la momentul actual. Alegerea metodei de tratament corectă este un moment important în profilaxia efectelor adverse.
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- 2023
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206. ANGULAR CHEILITIS: A MULTIDISCIPLINARY APPROACH TO DIAGNOSIS AND MANAGEMENT
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Oana Mihaela Condurache Hritcu, Mihaela Paula Toader, Ana Maria Sciuca, Bianca Andreea Onofrei, Victor Vlad Costan, Stefan Vasile Toader, and Cristina Popa
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angular cheilitis ,multidisciplinary management ,diagnostic criteria ,evidencebased treatment ,Dentistry ,RK1-715 - Abstract
Angular Cheilitis (AC) represents a multifaceted oral pathology characterized by erythematous lesions at the labial commissures. Despite its prevalence, AC is often inadequately addressed due to its polymorphic etiology, which can encompass infectious agents, nutritional deficits, and systemic conditions. This article provides a systematic review of the pathophysiology, clinical presentation, and etiological factors of AC, including nutritional deficiencies, infectious agents, and systemic diseases. Emphasizing a multidisciplinary strategy, we discuss the collaborative roles of dental, medical, and dermatological expertise in the accurate diagnosis and effective management of AC. We outline diagnostic criteria, appropriate laboratory tests, and imaging techniques tailored to address the multifaceted nature of the condition. Management strategies encompass a range of options from topical treatments and medications to dietary modifications and preventative measures, with an emphasis on evidence-based practices. This review advocates for integrated care models to optimize treatment efficacy, patient compliance, and to mitigate the recurrence of AC. Our analysis aims to enhance the understanding of AC and to provide a framework for its management, contributing to better patient care and opening avenues for future research.
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- 2023
207. THE IMPACT OF SYSTEMIC CORTICOSTEROID THERAPY ON ORAL HEALTH: COMPLICATIONS AND MANAGEMENT STRATEGIES
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Mihaela Paula Toader, Oana Mihaela Condurache Hritcu, Cristina Popa, Ana Maria Sciuca, Bianca Andreea Onofrei, Victor Vlad Costan, and Stefan Vasile Toader
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corticosteroids ,oral health complications ,systemic therapy ,Dentistry ,RK1-715 - Abstract
Corticosteroids, including glucocorticoids, mineralocorticoids, and androgenic hormones, are hormonal mediators produced by the adrenal glands and are widely used in the treatment of various conditions, including dental diseases. While systemic corticosteroid therapy offers significant therapeutic benefits, it is crucial to understand the potential adverse effects on oral health. This paper aims to highlight the impact of systemic corticosteroid therapy on oral health, focusing particularly on the associated complications and management strategies. The paper emphasizes specific complications that may occur in the oral cavity as a result of corticosteroid use, the most important being an increased susceptibility to oral infections such as candidiasis and impaired bone metabolism, with a significant reduction in the mineral density of the mandibular bone (BMD), as well as delayed wound healing, the occurrence of oral ulcers, and changes in the oral microbiome. Furthermore, the importance of rigorous oral care and regular dental monitoring for patients undergoing systemic corticosteroid therapy is underlined. The role of oral health specialists in the early detection and efficient management of oral complications, as well as patient education regarding proper oral hygiene practices and possible side effects, is of crucial importance. In conclusion, it is essential for healthcare providers to be vigilant regarding the potential oral health complications associated with systemic corticosteroid therapy, and early detection, prevention, and the implementation of appropriate management strategies are fundamental for optimizing oral health outcomes in patients undergoing corticosteroid treatment.
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- 2023
208. A community-based approach to identifying and prioritising young people’s mental health needs in their local communities
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Ediane Santana de Lima, Cristina Preece, Katie Potter, Ellen Goddard, Julian Edbrooke-Childs, Tim Hobbs, and Peter Fonagy
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Community engagement ,Participatory research ,Community-based participatory research ,Young people engagement ,Social determinants ,Adolescent mental health ,Medicine ,Medicine (General) ,R5-920 - Abstract
Abstract Background Identifying locally relevant and agreed-upon priorities for improving young people’s mental health, aligned with social and environmental factors, is essential for benefiting target communities. This paper describes a participatory approach to engage young people and professionals in identifying such priorities, whilst considering the social determinants related to them. Methods We utilised a community-based participatory approach to support young people and professionals in identifying, reviewing, refining, and prioritising, locally relevant opportunity areas that are crucial for understanding and addressing social determinants of young people’s mental health. We adopted a flexible five-stage process, which enabled greater reflection and adaptation in response to young people’s and professionals’ feedback and reflections. Results Over seven months, we engaged with young people and professionals in Northern Devon, (a rural area in southwest England), involving over 290 individuals to identify locally relevant priorities for supporting young people’s mental health. Three priorities were identified for subsequent exploration using co-design approaches: (1) identity and belonging; (2) mental health awareness and literacy; and (3) diverse opportunities (for education, employment and leisure). The engagements suggested that designing initiatives and strategies in these areas could contribute to improvements in young people’s mental health. Conclusion Young people in Northern Devon prioritised three themes for the next phase of the Kailo Programme—mental health literacy, access to diverse careers and employment opportunities, and identity and belonging within their communities. Rural communities face unique barriers associated with these issues, related to less diverse populations, lack of access to reliable and affordable transport and local industries, and seasonal working. The perceived neglect by authorities towards rural young people has resulted in a lack of activities and opportunities catering to their specific needs, compared to urban areas. Although the government has recognised the need to address these disparities, community members suggest that there is still more work to be done.
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- 2023
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209. Primordial gravitational waves in the nano-Hertz regime and PTA data — towards solving the GW inverse problem
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Eric Madge, Enrico Morgante, Cristina Puchades-Ibáñez, Nicklas Ramberg, Wolfram Ratzinger, Sebastian Schenk, and Pedro Schwaller
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Cosmology of Theories BSM ,Early Universe Particle Physics ,Axions and ALPs ,Phase Transitions in the Early Universe ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract In recent years, several pulsar timing array collaborations have reported first hints for a stochastic gravitational wave background at nano-Hertz frequencies. Here we elaborate on the possibility that this signal comes from new physics that leads to the generation of a primordial stochastic gravitational wave background. We propose a set of simple but concrete models that can serve as benchmarks for gravitational waves sourced by cosmological phase transitions, domain wall networks, cosmic strings, axion dynamics, or large scalar fluctuations. These models are then confronted with pulsar timing data and with cosmological constraints. With only a limited number of free parameters per model, we are able to identify viable regions of parameter space and also make predictions for future astrophysical and laboratory tests that can help with model identification and discrimination.
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- 2023
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210. The effect of body condition on alfaxalone induction dosage requirement in dogs
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Bartolome Luis Rico Perez, Cristina Parra Martinez, and Carolina Palacios Jimenez
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alfaxalone ,bcs ,induction ,obesity ,overweight ,Zoology ,QL1-991 - Abstract
Background: Alfaxalone is commonly used in veterinary anaesthesia for induction of general anaesthesia in dogs. However, it has been associated with dose-dependent cardiovascular depression. Therefore, the administration of liposoluble, intravenous-administered injectable induction agents, such as alfaxalone, is recommended to be based on the dog's lean body mass. Aim: To determine the influence of body condition score (BCS) on intravenous (IV) alfaxalone dose requirements to achieve endotracheal intubation in dogs. Methods: Prospective clinical study. A group of 34 dogs undergoing general anaesthesia (GA) for diagnostic and/or surgical procedures, body weight (BW) > 4 kg, BCS > 2, age 1-14 years, American Society of Anesthesiologists (ASA) classification I-III. Dogs were allocated to two different groups according to their BCS: non-overweight group (NOW) BCS: 3-5; and over-weight group (OW) BCS: 6-9. All dogs were premedicated IV with methadone 0.2 mg kg-1, and anaesthesia was induced by a slow IV infusion of alfaxalone at 1 mg kg-1 minute-1, delivered with a syringe driver, until loss of jaw tone and no/minimal gagging reflex sufficient to allow endotracheal intubation was achieved. The total dose of alfaxalone and the occurrence of post-induction apnoea were recorded. The Shapiro-Wilk test was performed to test for normality A Chi-square test was performed to compared the incidence of post-induction apnoea between groups and the Mann-Whitney U test was performed to compare the induction dose of alfaxalone between groups. A p value < 0.05 was considered statistically significant. Results: The mean dose ± standard deviation of alfaxalone in NOW was 2.18 ± 0.59 mg kg-1 and in OW it was 1.63 ± 0.26 mg kg-1 (p = 0.002). Sedation score did not differ between groups. Postinduction apnoea occurred in 6 of 17 animals in NOW and 15 of 17 in OW (p = 0.002). Conclusion: The dose of IV alfaxalone per kg of total body mass required to achieved endotracheal intubation was lower in overweight dogs, suggesting that lean body mass should be considered when calculating IV anaesthetic doses. The incidence of post-induction apnoea was higher in overweight/obese dogs with alfaxalone administered at a rate of 1 mg kg-1 minute-1. [Open Vet J 2023; 13(10.000): 1359-1365]
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- 2023
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211. Healthcare professional and manager perceptions on drivers, benefits, and challenges of telemedicine: results from a cross-sectional survey in the Italian NHS
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Grazia Antonacci, Elisabetta Benevento, Sveva Bonavitacola, Lorella Cannavacciuolo, Emanuela Foglia, Giulia Fusi, Elisabetta Garagiola, Cristina Ponsiglione, and Alessandro Stefanini
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Telemedicine ,Telehealth ,Benefits ,Challenges ,Drivers ,Covid-19 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background The Covid-19 pandemic provided new challenges and opportunities for patients and healthcare providers while accelerating the trend of digital healthcare transformation. This study explores the perspectives of healthcare professionals and managers on (i) drivers to the implementation of telemedicine services and (ii) perceived benefits and challenges related to the use of telemedicine across the Italian National Health Service. Methods An online cross-sectional survey was distributed to professionals working within 308 healthcare organisations in different Italian regions. Quantitative and qualitative data were collected through a self-administered questionnaire (June-September 2021). Responses were analysed using summary statistics and thematic analysis. Results Key factors driving the adoption of telemedicine have been grouped into (i) organisational drivers (reduce the virus spread-80%; enhance care quality and efficiency-61%), (ii) technological drivers (ease of use-82%; efficacy and reliability-64%; compliance with data governance regulations-64%) and (iii) regulatory drivers (regulations’ semplification-84%). Nearly all respondents perceive telemedicine as useful in improving patient care (96%). The main benefits reported by respondents are shorter waiting lists, reduced Emergency Department attendance, decreased patient and clinician travel, and more frequent patient-doctor interactions. However, only 7% of respondents believe that telemedicine services are more effective than traditional care and 66% of the healthcare professionals believe that telemedicine can’t completely substitute in-person visits due to challenges with physical examination and patient-doctor relationships. Other reported challenges include poor quality and interoperability of telemedicine platforms and scarce integration of telemedicine with traditional care services. Moreover, healthcare professionals believe that some groups of patients experience difficulties in accessing and using the technologies due to socio-cultural factors, technological and linguistic challenges and the absence of caregivers. Conclusions Respondents believe that telemedicine can be useful to complement and augment traditional care. However, many challenges still need to be overcome to fully consider telemedicine a standard of care. Strategies that could help address these challenges include additional regulations on data governance and reimbursements, evidence-based guidelines for the use of telemedicine, greater integration of tools and processes, patient-centred training for clinicians, patient-facing material to assist patients in navigating virtual sessions, different language options, and greater involvement of caregivers in the care process.
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- 2023
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212. CRANIOFACIAL MORPHOLOGIES, MALOCCLUSIONS AND SEDATIVE MEDICATIONS – RISK FACTORS FOR OBSTRUCTIVE SLEEP APNEA SYNDROME
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Alexandra-Lorina Platon, Otilia Boișteanu, Diana Tatarciuc, Magda-Călina Bârlean, Emilia Pătrășcanu, Șerban-Ovidiu Stelea, Octavian Dragoș Palade, Cristina Popa, Irina-Nicoleta Zetu, and Carmen-Gabriela Stelea
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obstructive sleep apnea ,craniofacial morphologies ,malocclusion ,sedative medication ,Dentistry ,RK1-715 - Abstract
Obstructive sleep apnea syndrome (OSAS) represents a major health problem associated with serious long-term consequences, affecting 2-5% of men and 2% of women from the general population. The most important risk-factors that lead to this condition are obesity, age, male sex, craniofacial abnormalities, malocclusions, personal habits such as smoking and alcohol consumption, the use of sedative medications, endocrine disorders. The purpose of this literature review is to evaluate the relationship between craniofacial morphologies, malloclussions and the use of sedative madication and the development of obstructive sleep apnea.
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- 2023
213. THE IMPACT OF DENTAL ANXIETY ON PERIODONTAL DISEASE
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Ioana-Teodora Pănăzan, Simina Neagoe, Laurența Lelia Mihai, Ana Maria Sciuca, Carmen Gabriela Stelea, Otilia Boisteanu, and Cristina Popa
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dental anxiety ,questionnaire ,periodontal disease ,Dentistry ,RK1-715 - Abstract
Aim of the study. Dental anxiety has an important role in the development of the periodontal disease. The aim of the current study is to investigate the relationship between dental anxiety and periodontal disease. Material and methods: Data was collected between 2022 and 2023 using a self-reporting questionnaire created with the Google Forms platform. Results: High dental anxiety is correlated both with poor periodontal health (p=2.11E-86) and with strong psychosocial impact that dental aesthetics has on the quality of life (p=4.46E-56). These directly influence the frequency of visits to the dentist (P values: 4.89E-07, 9.53E-17 and 5.29E-07), as well as the time elapsed since the last professional dental hygienization (P values: 0.0008, 1.57E-17 and 5.62E-10). These three are also interconnected with general health (P values: 0.015, 3.73E-09 and 1.95E-05) and stress (P values: 5.09E-10, 1.64E-08 and 9.87E-07). In addition, BMI shows a direct relationship with dental anxiety (p=0.020), as well as with periodontal health, along with the quality of eating habits (p=0.017 and p=0.001). Conclusion: the results indicated that the severity of the periodontal disease is a result of dental anxiety, and vice versa. Therapy should be personalized for each individual following a comprehensive evaluation and should be based on the experience and expertise of the dentist, the intellectual capacity of the patient, age, cooperation, and clinical situation of the patient.
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- 2023
214. Automated prediction of wet-snow avalanche activity in the Swiss Alps
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Martin Hendrick, Frank Techel, Michele Volpi, Tasko Olevski, Cristina Pérez-Guillén, Alec van Herwijnen, and Jürg Schweizer
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Avalanches ,snow ,snow mechanics ,Environmental sciences ,GE1-350 ,Meteorology. Climatology ,QC851-999 - Abstract
Wet-snow avalanches are triggered by the infiltration of liquid water which weakens the snowpack. Wet-snow avalanches are among the most destructive avalanches, yet their release mechanism is not sufficiently understood for a process-based prediction model. Therefore, we followed a data-driven approach and developed a random forest model, depending on slope aspect, to predict the local wet-snow avalanche activity at the locations of 124 automated weather stations distributed throughout the Swiss Alps. The input variables were the snow and weather data recorded by the stations over the past 20 years. The target variable was based on manual observations over the same 20-year period. To filter out erroneous reports, we defined the days with wet-snow avalanches in a stringent manner, selecting only the most extreme active or inactive days, which reduced the size of the dataset but increased the reliability of the target variable. The model was trained with weather variables and variables computed from simulated snow stratigraphy in 38$^\circ$ slopes facing the 4 cardinal directions. While model development and validation were done in nowcast mode, we also studied model performance in 24-hour forecast mode by using input variables computed from a numerical weather prediction (NWP) model. Overall, the performance was good in both nowcast and forecast mode (f1-score around 0.8). To assess model performance beyond the stringent definition of wet-snow avalanche days, we compared model predictions to wet-snow avalanche activity over the entire Swiss Alps, based on the raw data over 8 winters. We obtained a Spearman correlation coefficient of 0.71. Hence, our model represents a step toward the application of support tools in operational wet-snow avalanche forecasting.
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- 2023
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215. ACTUALIZACIÓN DEL CONSENSO CHILENO SOCHINEP-SER PARA EL MANEJO DE LAS SIBILANCIAS RECURRENTES DEL PREESCOLAR
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Ana María Herrera G., Selim Abara E., Cecilia Álvarez G., Claudia Astudillo M., Raúl Corrales V., Evelyn Chala C., Cecilia Dazenies S., Andrés Koppmann A., Viviana Lezana S., Rossana Mamani J., María Angélica Pérez H., Cristina Pierry V., and Mónica Saavedra B.
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asma ,preescolares ,ruidos respiratorios ,eosinófilos ,inmunoglobulina e ,corticoides ,Pediatrics ,RJ1-570 - Abstract
Las sibilancias recurrentes del preescolar son un problema prevalente. 50% de todos los niños tiene al menos un episodio de sibilancias en los primeros 6 años. Sin embargo, solo 4 % de los menores de 4 años tiene diagnóstico de asma. Por este motivo es fundamental realizar una adecuada anamnesis y examen físico tendientes a descartar causas secundarias, lo que debe ser complementado con exámenes de laboratorio de acuerdo con la orientación clínica. En la actualidad se recomienda indicar tratamiento de mantención con corticoides inhalados en aquellos niños que tengan episodios repetidos de obstrucción bronquial y que tengan una alta probabilidad de respuesta favorable a esta terapia. Se ha demostrado que aquellos pacientes que tienen un recuento de eosinófilos en sangre > 300 células por mm3 o aquellos que presentan una prueba cutánea positiva o IgE específicas positivas para alergenos inhalados, responderán adecuadamente al tratamiento con esteroides inhalados.
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- 2023
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216. Targeted inhibition of the methyltransferase SETD8 synergizes with the Wee1 inhibitor adavosertib in restraining glioblastoma growth
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Rosa Della Monica, Michela Buonaiuto, Mariella Cuomo, Cristina Pagano, Federica Trio, Davide Costabile, Giulia de Riso, Francesca Sveva Cicala, Maddalena Raia, Raduan Ahmed Franca, Marialaura Del Basso De Caro, Domenico Sorrentino, Giovanna Navarra, Laura Coppola, Lorella Tripodi, Lucio Pastore, Juergen Hench, Stephan Frank, Claudio Schonauer, Giuseppe Catapano, Maurizio Bifulco, Lorenzo Chiariotti, and Roberta Visconti
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Cytology ,QH573-671 - Abstract
Abstract Despite intense research efforts, glioblastoma remains an incurable brain tumor with a dismal median survival time of 15 months. Thus, identifying new therapeutic targets is an urgent need. Here, we show that the lysine methyltransferase SETD8 is overexpressed in 50% of high-grade gliomas. The small molecule SETD8 inhibitor UNC0379, as well as siRNA-mediated inhibition of SETD8, blocked glioblastoma cell proliferation, by inducing DNA damage and activating cell cycle checkpoints. Specifically, in p53-proficient glioblastoma cells, SETD8 inhibition and DNA damage induced p21 accumulation and G1/S arrest whereas, in p53-deficient glioblastoma cells, DNA damage induced by SETD8 inhibition resulted in G2/M arrest mediated by Chk1 activation. Checkpoint abrogation, by the Wee1 kinase inhibitor adavosertib, induced glioblastoma cell lines and primary cells, DNA-damaged by UNC0379, to progress to mitosis where they died by mitotic catastrophe. Finally, UNC0379 and adavosertib synergized in restraining glioblastoma growth in a murine xenograft model, providing a strong rationale to further explore this novel pharmacological approach for adjuvant glioblastoma treatment.
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- 2023
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217. Large T cell clones expressing immune checkpoints increase during multiple myeloma evolution and predict treatment resistance
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Cirino Botta, Cristina Perez, Marta Larrayoz, Noemi Puig, Maria-Teresa Cedena, Rosalinda Termini, Ibai Goicoechea, Sara Rodriguez, Aintzane Zabaleta, Aitziber Lopez, Sarai Sarvide, Laura Blanco, Daniele M. Papetti, Marco S. Nobile, Daniela Besozzi, Massimo Gentile, Pierpaolo Correale, Sergio Siragusa, Albert Oriol, Maria Esther González-Garcia, Anna Sureda, Felipe de Arriba, Rafael Rios Tamayo, Jose-Maria Moraleda, Mercedes Gironella, Miguel T. Hernandez, Joan Bargay, Luis Palomera, Albert Pérez-Montaña, Hartmut Goldschmidt, Hervé Avet-Loiseau, Aldo Roccaro, Alberto Orfao, Joaquin Martinez-Lopez, Laura Rosiñol, Juan-José Lahuerta, Joan Blade, Maria-Victoria Mateos, Jesús F. San-Miguel, Jose-Angel Martinez Climent, Bruno Paiva, the Programa Para el Estudio de la Terapéutica en Hemopatías Malignas/Grupo Español de Mieloma (PETHEMA/GEM) cooperative group, and the iMMunocell study group
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Science - Abstract
Abstract Tumor recognition by T cells is essential for antitumor immunity. A comprehensive characterization of T cell diversity may be key to understanding the success of immunomodulatory drugs and failure of PD-1 blockade in tumors such as multiple myeloma (MM). Here, we use single-cell RNA and T cell receptor sequencing to characterize bone marrow T cells from healthy adults (n = 4) and patients with precursor (n = 8) and full-blown MM (n = 10). Large T cell clones from patients with MM expressed multiple immune checkpoints, suggesting a potentially dysfunctional phenotype. Dual targeting of PD-1 + LAG3 or PD-1 + TIGIT partially restored their function in mice with MM. We identify phenotypic hallmarks of large intratumoral T cell clones, and demonstrate that the CD27− and CD27+ T cell ratio, measured by flow cytometry, may serve as a surrogate of clonal T cell expansions and an independent prognostic factor in 543 patients with MM treated with lenalidomide-based treatment combinations.
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- 2023
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218. Acute and long-term psychosocial consequences in grandparents when a grandchild is diagnosed with cancer – the GROKids Project: a population-based mixed-methods study protocol
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Gisela Michel, Peter Francis Raguindin, Cristina Priboi, Anica Ilic, Pauline Holmer, Katrin Scheinemann, and the GROKids Project
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Grandparent ,Psychological outcomes ,Elderly ,Aging ,Childhood cancer ,Psychology ,BF1-990 - Abstract
Abstract Background Grandparents play a crucial role in providing their families with love, support, and wisdom, often also supporting them in practical and financial ways. The psychosocial effects experienced by grandparents when a grandchild is diagnosed with an illness can be significant, including increased stress, anxiety, grief, and disruptions in their own lives. Yet, the experience of grandparents is often overlooked in the literature. Methods/design The GROKids Project aims to investigate how grandparents are affected by a grandchild's cancer diagnosis. It employs a mixed-methods approach and consists of three studies: a longitudinal cohort study (Study 1) and a qualitative study (Study 2) involving grandparents of children with a recent cancer diagnosis, and a cross-sectional study (Study 3) of grandparents of childhood cancer survivors. Study 1 covers four time points over two years after the cancer diagnosis, while Study 2 explores the lived experiences of a subsample of these grandparents. Study 3 collects data from grandparents of childhood cancer survivors diagnosed 3 to 10 years ago. Participants are recruited across eight pediatric oncology centers in Switzerland, and through patient advocacy and support groups. Eligibility criteria include having a grandchild diagnosed with cancer and being fluent in German, French, or Italian. Study procedures involve requesting grandparents’ contacts from eligible families, and later contacting grandparents, providing study information, obtaining informed consent, and sending out questionnaires by post or online. Reminder calls and mails are used to improve response rates. Data analysis includes multilevel regression (Study 1), thematic analysis (Study 2), and regression analyses (Study 3). Various validated questionnaires are used to assess physical health and overall well-being, psychological health, internal, and external factors. Discussion This project addresses the gaps in understanding the psychosocial effects on grandparents having a grandchild diagnosed with cancer. It utilizes a comprehensive approach, including multiple methodologies and considering the broader family context. The project’s strengths lie in its mixed-methods design, longitudinal approach, and inclusion of the perspectives of the sick children, siblings, and parents, besides grandparents. By gaining a more profound understanding of grandparents' experiences, researchers and healthcare professionals can develop targeted interventions and support services to address grandparents’ unique needs.
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- 2023
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219. Structural and biological characterization of shortened derivatives of the cathelicidin PMAP-36
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Barbara Biondi, Luigi de Pascale, Mario Mardirossian, Adriana Di Stasi, Matteo Favaro, Marco Scocchi, and Cristina Peggion
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Medicine ,Science - Abstract
Abstract Cathelicidins, a family of host defence peptides in vertebrates, play an important role in the innate immune response, exhibiting antimicrobial activity against many bacteria, as well as viruses and fungi. This work describes the design and synthesis of shortened analogues of porcine cathelicidin PMAP-36, which contain structural changes to improve the pharmacokinetic properties. In particular, 20-mers based on PMAP-36 (residues 12-31) and 13-mers (residues 12-24) with modification of amino acid residues at critical positions and introduction of lipid moieties of different lengths were studied to identify the physical parameters, including hydrophobicity, charge, and helical structure, required to optimise their antibacterial activity. Extensive conformational analysis, performed by CD and NMR, revealed that the substitution of Pro25-Pro26 with Ala25-Lys26 increased the α-helix content of the 20-mer peptides, resulting in broad-spectrum antibacterial activity against Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and Staphylococcus epidermidis strains. Interestingly, shortening to just 13 residues resulted in only a slight decrease in antibacterial activity. Furthermore, two sequences, a 13-mer and a 20-mer, did not show cytotoxicity against HaCat cells up to 64 µM, indicating that both derivatives are not only effective but also selective antimicrobial peptides. In the short peptide, the introduction of the helicogenic α-aminoisobutyric acid forced the helix toward a prevailing 310 structure, allowing the antimicrobial activity to be maintained. Preliminary tests of resistance to Ser protease chymotrypsin indicated that this modification resulted in a peptide with an increased in vivo lifespan. Thus, some of the PMAP-36 derivatives studied in this work show a good balance between chain length, antibacterial activity, and selectivity, so they represent a good starting point for the development of even more effective and proteolysis-resistant active peptides.
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- 2023
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220. Association between inpatient glycemic variability and COVID-19 mortality: a prospective study
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Salma Ali El Chab Parolin, Rebecca Benicio Stocco, Julia do Carmo Kneipp Lopes, Marcos Roberto Curcio Pereira, Milena Massae Yamashita, Maria Eduarda Domareski Goulart, Henrique Demeneck, Marcia Olandoski, Larissa Hermann de Souza Nunes, Victor Keniche Morisawa, Luiz Augusto Fanhani Cracco, Isabela Busto Silva, Jarbas Silva Motta Júnior, Daniela Veit Barreto, Gustavo Lenci Marques, Thyago Proença de Moraes, and Cristina Pellegrino Baena
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COVID-19 ,Glycemic variability ,Mortality, inpatient ,Nutritional diseases. Deficiency diseases ,RC620-627 - Abstract
Abstract Background This study aimed to determine the association between glycemic variability (GV) and mortality in hospitalized patients with coronavirus disease 2019 (COVID-19). Methods We prospectively analyzed data from inpatients (> 18 years old) with RT-PCR confirmed COVID-19 admitted between March 2020 and July 2021. All patients were hospitalized for more than 48 h and had at least six point-of-care capillary glucose tests obtained three times daily in the pre-prandial period during hospitalization. GV was measured using the glucose standard deviation (SD) and coefficient of variation (CV). ROC curve was adjusted to determine the SD and CV cutoff values associated with mortality (44.7 mg/dL and 27.5%, respectively); values above these were considered indicative of high GV. Logistic regression models were fitted to explore the association between GV and mortality in patients with and without diabetes. Results A total of 628 patients were stratified into SD
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- 2023
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221. Digital health and Clinical Patient Management System (CPMS) platform utility for data sharing of neuromuscular patients: the Italian EURO-NMD experience
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Fernanda Fortunato, Francesca Bianchi, Giulia Ricci, Francesca Torri, Francesca Gualandi, Marcella Neri, Marianna Farnè, Fabio Giannini, Alessandro Malandrini, Nila Volpi, Diego Lopergolo, Vincenzo Silani, Nicola Ticozzi, Federico Verde, Davide Pareyson, Silvia Fenu, Silvia Bonanno, Vincenzo Nigro, Cristina Peduto, Paola D’Ambrosio, Roberta Zeuli, Mariateresa Zanobio, Esther Picillo, Serenella Servidei, Guido Primiano, Cristina Sancricca, Monica Sciacco, Roberta Brusa, Massimiliano Filosto, Stefano Cotti Piccinelli, Elena Pegoraro, Tiziana Mongini, Luca Solero, Giulio Gadaleta, Chiara Brusa, Carlo Minetti, Claudio Bruno, Chiara Panicucci, Valeria A. Sansone, Christian Lunetta, Alice Zanolini, Antonio Toscano, Alessia Pugliese, Giulia Nicocia, Enrico Bertini, Michela Catteruccia, Daria Diodato, Antonio Atalaia, Teresinha Evangelista, Gabriele Siciliano, and Alessandra Ferlini
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Telemedicine ,CPMS ,ERN ,Rare diseases ,Digital health ,Medicine - Abstract
Abstract Background The development of e-health technologies for teleconsultation and exchange of knowledge is one of the core purposes of European Reference Networks (ERNs), including the ERN EURO-NMD for rare neuromuscular diseases. Within ERNs, the Clinical Patient Management System (CPMS) is a web-based platform that seeks to boost active collaboration within and across the network, implementing data sharing. Through CPMS, it is possible to both discuss patient cases and to make patients’ data available for registries and databases in a secure way. In this view, CPMS may be considered a sort of a temporary storage for patients’ data and an effective tool for data sharing; it facilitates specialists’ consultation since rare diseases (RDs) require multidisciplinary skills, specific, and outstanding clinical experience. Following European Union (EU) recommendation, and to promote the use of CPMS platform among EURO-NMD members, a twelve-month pilot project was set up to train the 15 Italian Health Care Providers (HCPs). In this paper, we report the structure, methods, and results of the teaching course, showing that tailored, ERN-oriented, training can significantly enhance the profitable use of the CPMS. Results Throughout the training course, 45 professionals learned how to use the many features of the CPMS, eventually opening 98 panels of discussion—amounting to 82% of the total panels included in the EURO-NMD. Since clinical, genetic, diagnostic, and therapeutic data of patients can be securely stored within the platform, we also highlight the importance of this platform as an effective tool to discuss and share clinical cases, in order to ease both case solving and data storing. Conclusions In this paper, we discuss how similar course could help implementing the use of the platform, highlighting strengths and weaknesses of e-health for ERNs. The expected result is the creation of a “map” of neuromuscular patients across Europe that might be improved by a wider use of CPMS.
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- 2023
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222. The characterization of CellROX™ probes could be a crucial factor in ram sperm quality assessment
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Cristina Palacin-Martinez, Luis Anel-Lopez, Mercedes Alvarez, Marta Neila-Montero, Rafael Montes-Garrido, Cristina Soriano-Úbeda, Paulino de Paz, Luis Anel, and Marta F. Riesco
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CellROX probes ,lipid peroxidation ,ovine ,oxidative stress ,reactive oxygen species ,sperm ,Veterinary medicine ,SF600-1100 - Abstract
Several authors have demonstrated that low levels of reactive oxygen species (ROS) are necessary for the physiological functions of sperm, such as capacitation, hyperactivation, acrosomal reaction and fertilization. However, high levels of ROS are associated with oxidative stress and detrimental effects on fertility. Consequently, deep characterization of ROS presence using different fluorescent probes could be crucial. In this sense, the study of intracellular ROS localization and the relationships between ROS and other conventional parameters could improve the characterization of sperm quality for semen preservation protocols in rams. In this work, a multiparametric study was carried out by analyzing four experimental groups of ram sperm with different initial qualities: fresh semen (from both breeding and nonbreeding seasons), frozen-thawed semen and, a positive control group treated with hydrogen peroxide (300 μM) as a marker of extreme damage. Sperm analyses, including viability, apoptosis, lipid peroxidation, motility and kinetic parameters, were applied to compare several experimental groups with different sperm qualities. After that, the signals from two different ROS probes: CellROX™ Deep Red (CRDR) and Green (CRG), were examined by flow cytometry (percentage of cells that express ROS) and fluorescence microscopy (intracellular ROS location). Comparing conventional parameters, fresh samples from the breeding season showed the highest sperm quality, while the positive control samples showed the worst sperm quality. Concerning the ROS probes, the CRDR levels were higher in fresh samples from the breeding season than in the positive control and cryopreserved samples. Surprisingly, CRG presented its highest level (P < 0.05) in the positive control group treated with peroxide by flow cytometry. CRDR and CRG presented opposite labeling patterns that were corroborated by fluorescence microscopy, which determined that the probes localized in different parts of sperm. CRDR was found in the sperm mitochondrial region, while CRG was observed in the cell nucleus, suggesting that ROS localization is an important factor. Finally, our study indicates that CRDR is correlated with proper viability and sperm motility, and could be associated with high mitochondrial activity, while CRG is associated with sperm damage.
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- 2024
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223. Unlocking protein-based biomarker potential for graft-versus-host disease following allogenic hematopoietic stem cell transplants
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Maria Iacobescu, Cristina Pop, Alina Uifălean, Cristina Mogoşan, Diana Cenariu, Mihnea Zdrenghea, Alina Tănase, Jon Thor Bergthorsson, Victor Greiff, Mihai Cenariu, Cristina Adela Iuga, Ciprian Tomuleasa, and Dan Tătaru
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allogenic stem cell transplantation ,graft-versus-host-disease ,biomarker ,proteomics ,biofluids ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Despite the numerous advantages of allogeneic hematopoietic stem cell transplants (allo-HSCT), there exists a notable association with risks, particularly during the preconditioning period and predominantly post-intervention, exemplified by the occurrence of graft-versus-host disease (GVHD). Risk stratification prior to symptom manifestation, along with precise diagnosis and prognosis, relies heavily on clinical features. A critical imperative is the development of tools capable of early identification and effective management of patients undergoing allo-HSCT. A promising avenue in this pursuit is the utilization of proteomics-based biomarkers obtained from non-invasive biospecimens. This review comprehensively outlines the application of proteomics and proteomics-based biomarkers in GVHD patients. It delves into both single protein markers and protein panels, offering insights into their relevance in acute and chronic GVHD. Furthermore, the review provides a detailed examination of the site-specific involvement of GVHD. In summary, this article explores the potential of proteomics as a tool for timely and accurate intervention in the context of GVHD following allo-HSCT.
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- 2024
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224. Ontogenetic changes in the tyrosine hydroxylase immunoreactive preoptic area in the small-spotted catshark Scyliorhinus canicula (L., 1758) females: catecholaminergic involvement in sexual maturation
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Riccardo Porceddu, Cristina Porcu, Giovanna Mulas, Saturnino Spiga, and Maria Cristina Follesa
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Scyliorhinus canicula ,brain ,preoptic nucleus ,stereology ,ontogenetic changes ,shark ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Human anatomy ,QM1-695 - Abstract
IntroductionThe catecholaminergic component of the brain-pituitary-gonadal axis, which mediates the influence of external and internal stimuli on the central nervous system and gonad development in vertebrates, is largely unexplored in Chondrichthyes. We considered Scyliorhinus canicula (L., 1758) females as a model for this vertebrate's class, to assess the involvement of the catecholaminergic system of the brain in its reproduction. Along the S. canicula reproductive cycle, we characterized and evaluated differences in somata morphometry and the number of putative catecholaminergic neurons in two brain nuclei: the periventricular preoptic nucleus, hypothesized to be a positive control for ovarian development, and the suprachiasmatic nucleus, examined as a negative control.Materials and methods16 S. canicula wild females were sampled and grouped in maturity stages (immature, maturing, mature, and mature egg-laying). The ovary was histologically processed for the qualitative description of maturity stages. Anti-tyrosine hydroxylase immunofluorescence was performed on the diencephalic brain sections. The immunoreactive somata were investigated for morphometry and counted using the optical fractionator method, throughout the confocal microscopy.Results and discussionsQualitative and quantitative research confirmed two separate populations of immunoreactive neurons. The modifications detected in the preoptic nucleus revealed that somata were more numerous, significantly smaller in size, and more excitable during the maturing phase but decreased, becoming slightly bigger and less excitable in the egg-laying stage. This may indicate that the catecholaminergic preoptic nucleus is involved in the control of reproduction, regulating both the onset of puberty and the imminent spawning. In contrast, somata in the suprachiasmatic nucleus grew in size and underwent turnover in morphometry, increasing the total number from the immature-virgin to maturing stage, with similar values in the more advanced maturity stages. These changes were not linked to a reproductive role. These findings provide new valuable information on Chondrichthyes, suggesting the existence of an additional brain system implicated in the integration of internal and environmental cues for reproduction.
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- 2024
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225. National, longitudinal NASCITA birth cohort study: prevalence of overweight at 12 months of age in children born healthy
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Antonio Clavenna, Massimo Cartabia, Maurizio Bonati, Federico Marchetti, Giorgio Tamburlini, Antonio Addis, Michele Valente, Rita Campi, Stefania Manetti, Valeria Carraro, Sergio Conti Nibali, Renato Sansone, Patrizia Rogari, Annalisa Campomori, Luca De Fiore, Renata Bortolus, Sergio Cattani, Cristiana Piloni, Valeria Renzetti, Rosario Cavallo, Gherardo Rapisardi, Giacomo Toffol, Vicenza Briscioli, Carla Cafaro, Cristoforo Cocchiara, Isodiana Crupi, Patrizia Del Balzo, Laura Dell’edera, Chiara Di Francesco, Alberto Ferrando, Francesca Grassa, Chiara Guidoni, Claudio Mangialavori, Stefano Marinoni, Francesca Marongiu, Fausta Matera, Paolo Moretti, Laura Olimpi, Angela Pasinato, Ilaria Porro, Ippolita Roncoroni, Raffaella Schiro’, Patrizia Seppia, Federica Zanetto, Anna Aloisio, Elisabetta Anedda, Giuliana Apuzzo, Giovanna Argo, Anna Armenio, Emanuela Ballerini, Monica Benedetti, Daniela Bertoli, Stefano Bollettini, Chiara Bottalico, Aurora Bottiglieri, Vincenza Briscioli, Antonella Bruno, Laura Brusadin, Mariantonietta Caiazzo, Patrizia Calamita, Miriana Callegari, Rosaria Cambria, Maria Cristina Cantù, Domenico Capomolla, Anna Caracciolo, Maria Concetta Carbone, Gaetano Carrassi, Maria Laura Cartiglia, Sara Casagranda, Ornella Castiglione, Rosario Salvatore Cavallo, Teresa Cazzato, Maria Angela Cazzuffi, Jennifer Chiarolanza, Rosaria China, Nicoletta Cimadamore, Roberto Cionini, Cristina Ciuffo, Damiano Colazzo, Anna Maria Costantini, Claudio Cravidi, Marialuisa Criscione, Rita D’Agostino, Daniela Danieli, Luigi De Carlo, Marina De Sanctis, Giuseppina De Santes, Gian Piero Del Bono, Maria Elisabetta Di Pietro, Maria Chiara Dini, Paolo Fiammengo, Micaela Foco, Maria Teresa Fonte, Maria Frigeri, Andrea Galvagno, Matteo Gaudino, Stefania Genoni, Silvia Girotto, Gianluca Gornati, Marta Gozzi, Enrica Heritier, Antonella Lavagetto, Raffaele Limauro, Alessandra Magnelli, Maria Gabriella Maiolino, Monica Malventano, Silvia Marchi, Natale Maresca, Federico Marolla, Agata Martinelli, Chiara Martinez, Nicoletta Mascarello, Carla Matiotti, Elisabetta Mazzucchi, Donatella Moggia, Manuela Musetti, Paolo Nardini, Alberto Neri, Patrizia Neri, Flavia Nicoloso, Laura Maria Olimpi, Giancarlo Ottonello, Giacinta Padula, Paolo Maria Paganuzzi, Rosanna Palazzi, Alessandra Palmero, Maria Chiara Parisini, Giovannina Pastorelli, Marilena Pavoni, Lucia Peccarisi, Antonella Pellacani, Cristina Perrera, Michela Picciotti, Ivo Picotto, Tiziana Piunti, Francesca Preziosi, Giuseppe Primavera, Miriam Prodi, Maria Letizia Rabbone, Innocenza Rafele, Laura Reali, Franziska Stefanie Rempp, Ada Riundi, Paolo Rosas, Annarita Russo, Mariagrazia Saccà, Elisabetta Sala, Francesca Sala, Francesca Santus, Vittoria Sarno, Alessandra Savino, Raffaella Schirò, Giuseppa Scornavacca, Maria Francesca Siracusano, Adelisa Spalla, Gloria Sturaro, Maria Grazia Toma, Ettore Tomagra, Maria Tortorella, Fausta Trentadue, Marina Trevisan, Silvia Tulisso, Roberta Usella, Anna Valente, Mariangela Valera, Edda Vernile, Valeria Vicario, Lucia Vignutelli, Paolo Vinci, Lucia Vizziello, Rosette Zand, Marco Zanette, Graziano Zucchi, Maria Luisa Zuccolo, Eleonora Morabito, Chiara Liz Pandolfini, Chiara Segre’, Rossella Claudia Cannavo’, Melania Maria Cera, Emma Maria Giugnini, and Giovanni Giuliano Semprini
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Pediatrics ,RJ1-570 - Abstract
Objective To estimate the prevalence of overweight at 12 months in an Italian birth cohort and to identify factors related to an increased likelihood of being overweight.Methods The Italian NASCITA birth cohort was analysed. Infants were classified as underweight (
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- 2023
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226. Albanian as a Heritage Language in Italy: A Case Study on Code-Switching within DP
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Gloria Cocchi and Cristina Pierantozzi
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heritage languages ,Albanian ,Italian ,code-switching ,mixed DPs ,Language and Literature - Abstract
In this pilot work, we are going to discuss several aspects concerning the Albanian language spoken in the Italian territory by immigrants of different generations. After an excursus on heritage languages in general, and Albanian as a heritage language in particular, we present the results of both a sociolinguistic and a linguistic survey conducted among some Albanian immigrants in Italy. The former aims at investigating the contexts of use of Albanian and Italian languages, the participants’ competence in both of them and their attitude towards code-switching. The latter is focused on the participants’ judgments of the acceptability of different types of mixed Italian–Albanian DPs, i.e., DPs where D and N are expressed in different languages, and the theoretical implications that emerge.
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- 2024
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227. Evaluation of 16S-Based Metagenomic NGS as Diagnostic Tool in Different Types of Culture-Negative Infections
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Sara Giordana Rimoldi, Alessandro Tamoni, Alberto Rizzo, Concetta Longobardi, Cristina Pagani, Federica Salari, Caterina Matinato, Chiara Vismara, Gloria Gagliardi, Miriam Cutrera, and Maria Rita Gismondo
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metagenomics ,NGS ,diagnostics ,infection ,bacteria ,culture-negative sample ,Medicine - Abstract
Bacterial infections pose significant global health challenges, often underestimated due to difficulties in accurate diagnosis, especially when culture-based diagnostics fail. This study assesses the effectiveness of 16S-based metagenomic next generation sequencing (NGS) for identifying pathogens in culture-negative clinical samples across various medical settings. Overall, 48% of samples were collected from orthopedics, 15% from neurosurgery, and 12% in cardiac surgery, among others. The detection rate of monomicrobial infections was 68.6%, and 5.7% for polymicrobial infections. In addition, NGS detected bacteria in all samples from the lungs, head and neck, and eye specimens. Cutibacterium acnes (11%, 12/105) was the most frequent microorganism, followed by Staphylococcus epidermidis (10.4%, 11/105), and Staphylococcus aureus (9.5%, 10/105). In conclusion, 16S-targeted metagenomic sequencing enhances pathogen detection capabilities, particularly in instances where traditional cultures fail. By the combination of NGS and bacterial cultures, microbiologists might provide a more accurate diagnosis, guiding more effective treatments and potentially reducing healthcare costs associated with empirical treatments.
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- 2024
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228. Enhanced Scattering by Wearable Objects in Wireless Power Transfer Links: Case Studies
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Ludovica Tognolatti, Cristina Ponti, and Giuseppe Schettini
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electromagnetic scattering ,implantable/wearable antennas ,wireless power transfer systems ,Mathematics ,QA1-939 - Abstract
Wireless power transfer (WPT) systems have ushered in a new era for wearable and implantable technologies, introducing opportunities for enhanced device functionality. A pivotal aspect in improving these devices is the optimization of electromagnetic transmission. This paper presents several solutions to improve electromagnetic transmission to an implantable/wearable device. Several scatterers are considered to mimic objects that can be easily worn by a patient, such as necklaces and bracelets, or easily integrated into textile fabric. An analytical method is employed to address the scattering by cylindrical objects above a biological tissue, modeled as a multilayer. Expansions into cylindrical waves, also represented through plane-wave spectra, are used to express the scattered fields in each medium. Numerical results for both the case of conducting and of dielectric cylindrical scatterers are presented at a frequency of the Industrial, Scientific and Medical band (f=2.45 GHz), showing possible configurations of worn objects for electromagnetic field intensification.
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- 2024
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229. Resolvin D5 Protects Female Hairless Mouse Skin from Pathological Alterations Caused by UVB Irradiation
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Priscila Saito, Ingrid C. Pinto, Camilla C. A. Rodrigues, Ricardo L. N. de Matos, David L. Vale, Cristina P. B. Melo, Victor Fattori, Telma Saraiva-Santos, Soraia Mendes-Pierotti, Mariana M. Bertozzi, Ana P. F. R. L. Bracarense, Josiane A. Vignoli, Marcela M. Baracat, Sandra R. Georgetti, Waldiceu A. Verri, and Rubia Casagrande
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collagen ,cytokine ,inflammation ,lipid ,oxidative stress ,reactive oxygen species ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Resolvin D5 (RvD5) is a lipid mediator that has been reported to present anti-inflammatory and pro-resolution properties. Evidence also supports its capability to enhance reactive oxygen species (ROS) production during bacterial infections, which would be detrimental in diseases driven by ROS. The biological activity of RvD5 and mechanisms against UVB irradiation skin pathology have not been investigated so far. Female hairless mice were treated intraperitoneally with RvD5 before UVB stimulus. RvD5 reduced skin edema in a dose-dependent manner as well as oxidative stress by increasing antioxidants (endogenous tissue antioxidant scavenging of cationic radical, iron reduction, catalase activity and reduced glutathione levels) and decreasing pro-oxidants (superoxide anion and lipid peroxidation). RvD5 antioxidant activity was accompanied by enhancement of Nrf2, HO-1 and NQO1 mRNA expression. RvD5 reduced the production of IL-1β, TNF-α, TGF-β, and IL-10. RvD5 also reduced the inflammatory cell counts, including mast cells and neutrophils/macrophages. The reduction of oxidative stress and inflammation resulted in diminished matrix metalloproteinase 9 activity, collagen degradation, epidermal thickening and sunburn cell development. Therefore, this study demonstrates, to our knowledge, the first body of evidence that RvD5 can be used to treat UVB skin pathology and unveils, at least in part, its mechanisms of action.
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- 2024
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230. Exploring the Integration of a Novel Photocatalytic Air Purification Façade Component in Buildings
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Judit Lopez-Besora, Cristina Pardal, Antonio Isalgue, and Oriol Roig
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building envelope ,natural ventilation ,air purification ,façade design ,indoor air quality ,slat ,Building construction ,TH1-9745 - Abstract
Indoor air quality determines the comfort, health, and wellbeing of people in buildings. Windows are the optimal elements for providing natural ventilation and fresh air, but the outside contains suspended particles that can be harmful in high concentrations. This work presents an openable and double-glazed façade component with a cavity that includes a series of slats that filter the air and depurate it by means of a photocatalytic reaction (TiO2). This component integrates the functions of ventilation, solar protection, and air purification, which were analysed in the slat and the façade component to approve a preliminary design. To this end, it was applied to a specific case, a non-residential building at a latitude 41° N in a Mediterranean climate. The results show the optimal dimensions according to solar radiation and ventilation in this specific case and the method used to obtain them, along with the increase in the temperature of the incoming air with respect to the outside (10 °C). Finally, the results obtained from a photocatalytic coating sample show that the NOx degradation can be up to 9%. All these results confirm the applicability of this component in buildings and pave the way for further research.
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- 2024
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231. Central Actions of Leptin Induce an Atrophic Pattern and Improves Heart Function in Lean Normoleptinemic Rats via PPARβ/δ Activation
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Blanca Rubio, Cristina Pintado, Lorena Mazuecos, Marina Benito, Antonio Andrés, and Nilda Gallardo
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PPARβ/δ ,leptin ,MRI ,cardiac remodeling ,Wistar rat ,Microbiology ,QR1-502 - Abstract
Leptin, acting centrally or peripherally, has complex effects on cardiac remodeling and heart function. We previously reported that central leptin exerts an anti-hypertrophic effect in the heart via cardiac PPARβ/δ activation. Here, we assessed the impact of central leptin administration and PPARβ/δ inhibition on cardiac function. Various cardiac properties, including QRS duration, R wave amplitude, heart rate (HR), ejection fraction (EF), end-diastolic left ventricular mass (EDLVM), end-diastolic volume (EDV), and cardiac output (CO) were analyzed. Central leptin infusion increased cardiac PPARβ/δ protein content and decreased HR, QRS duration, and R wave amplitude. These changes induced by central leptin suggested a decrease in the ventricular wall growth, which was confirmed by MRI. In fact, the EDLVM was reduced by central leptin while increased in rats co-treated with leptin and GSK0660, a selective antagonist of PPARβ/δ activity. In summary, central leptin plays a dual role in cardiac health, potentially leading to ventricular atrophy and improving heart function when PPARβ/δ signaling is intact. The protective effects of leptin are lost by PPARβ/δ inhibition, underscoring the importance of this pathway. These findings highlight the therapeutic potential of targeting leptin and PPARβ/δ pathways to combat cardiac alterations and heart failure, particularly in the context of obesity.
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- 2024
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232. Assessment of Photoactivated Chlorophyllin Production of Singlet Oxygen and Inactivation of Foodborne Pathogens
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Cristina Pablos, Javier Marugán, Rafael van Grieken, Jeremy W. J. Hamilton, Nigel G. Ternan, and Patrick S. M. Dunlop
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chlorophyllin ,singlet oxygen ,Gram-positive ,Gram-negative ,food safety ,photosensitization ,Chemical technology ,TP1-1185 ,Chemistry ,QD1-999 - Abstract
Singlet oxygen (1O2) is known to have antibacterial activity; however, production can involve complex processes with expensive chemical precursors and/or significant energy input. Recent studies have confirmed the generation of 1O2 through the activation of photosensitizer molecules (PSs) with visible light in the presence of oxygen. Given the increase in the incidence of foodborne diseases associated with cross-contamination in food-processing industries, which is becoming a major concern, food-safe additives, such as chlorophyllins, have been studied for their ability to act as PSs. The fluorescent probe Singlet Oxygen Sensor Green (SOSG®) was used to estimate 1O2 formation upon the irradiation of traditional PSs (rose bengal (RB), chlorin 6 (ce6)) and novel chlorophyllins, sodium magnesium (NaChl) and sodium copper (NaCuChl), with both simulated-solar and visible light. NaChl gave rise to a similar 1O2 production rate when compared to RB and ce6. Basic mixing was shown to introduce sufficient oxygen to the PS solutions, preventing the limitation of the 1O2 production rate. The NaChl-based inactivation of Gram-positive S. aureus and Gram-negative E. coli was demonstrated with a 5-log reduction with UV–Vis light. The NaChl-based inactivation of Gram-positive S. aureus was accomplished with a 2-log reduction after 105 min of visible-light irradiation and a 3-log reduction following 150 min of exposure from an initial viable bacterial concentration of 106 CFU mL−1. CHS-NaChl-based photosensitization under visible light enhanced Gram-negative E. coli inactivation and provided a strong bacteriostatic effect preventing E. coli proliferation. The difference in the ability of NaChl and CHS-NaChl complexes to inactivate Gram-positive and Gram-negative bacteria was confirmed to result from the cell wall structure, which impacted PS–bacteria attachment and therefore the production of localized singlet oxygen.
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- 2024
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233. Degree of Contamination of Gutta-Percha Points by Staphylococcus aureus (MRSA/MSSA) Strains
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Ana Moura Teles, Cristina Pina, Inês Lopes Cardoso, Antea Tramontana, Miguel Cardoso, Ana Sofia Duarte, Maria Bartolomeu, and Rita Noites
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Staphylococcus aureus ,MRSA/MSSA ,Gutta-Percha ,contamination ,endodontics ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is considered one of the most harmful bacteria to human health. Dentistry, like all healthcare disciplines, places great emphasis on preventing scenarios that may result in cross-infection. Although various tested and already used materials are suitable for filling the root canal system, Gutta-Percha (GP) remains the preferred and widely accepted gold standard. Objective: We performed an in vitro analysis of the contamination of GP points, regarding the strains of Methicillin-resistant (MRSA) and Methicillin-sensitive (MSSA) Staphylococcus aureus, using classical microbiology methods and molecular biology techniques. Methods: Gutta-Percha points of two different brands from opened packages (already in use for 1 month) were collected for analysis. The assessment involved incubating the GP points in Brain Heart Infusion (BHI) medium to detect microbial growth. Growing microorganisms were plated on a selective and differential chromogenic medium for MRSA/MSSA strains, and the identification of isolates was confirmed by Polymerase Chain Reaction (PCR). In the case of microbial growth, the GP point was submitted to a disinfection protocol. Results: From the 315 collected GP points, only 6 (1.9%) resulted in being positive for microbial growth. After confirmation by PCR, only one sample of the six GP points was contaminated by MRSA, and the remaining five were MSSA-contaminated. The disinfection protocol was effective in all contaminated GP points. Conclusions: The Gutta-Percha points from opened pre-sterilized packages showed a very low degree of contamination by MRSA/MSSA. However, the detection of MSSA and MRSA strains raises concerns about potential contamination in dental clinic environments, and this risk cannot be considered negligible.
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- 2024
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234. Lipoprotein(a) in Children and Adolescents: Risk or Causal Factor for Cardiovascular Disease? A Narrative Review
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Maria Elena Capra, Giacomo Biasucci, Giuseppe Banderali, and Cristina Pederiva
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lipoprotein(a) ,cardiovascular risk ,children ,adolescents ,atherosclerosis ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
The evaluation of serum Lp(a) values in childhood and adolescence has been widely debated, and in the last few years, many authors have tried to better define Lp(a) role in atherosclerosis pathogenesis, starting from childhood. In our narrative review, we have evaluated the main historical stages of Lp(a) studies in childhood, trying to focus on pathogenic mechanisms linked to elevated serum Lp(a) values, starting from ischemic stroke and vascular damage, and to its possible direct involvement in premature atherosclerosis from childhood onwards. Historic manuscripts on Lp(a) in pediatric patients have mainly focused on serum Lp(a) values and increased stroke risk. More recently, many studies have evaluated Lp(a) as a coronary vascular disease (CVD) risk factor starting from childhood, especially related to a positive family history of premature CVD. Finally, only a few studies evaluated the role of Lp(a) in premature atherosclerotic processes and endothelial and vascular damage in pediatric patients. Lastly, we have hypothesized a future perspective, with the hope that plasma Lp(a) levels will be treated with a tailored pharmacologic approach, and Lp(a) will become a precocious therapeutic target to control the atherosclerotic pathways from the first years of life.
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- 2024
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235. Predicting Unfavorable Pregnancy Outcomes in Polycystic Ovary Syndrome (PCOS) Patients Using Machine Learning Algorithms
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Raluca Mogos, Liliana Gheorghe, Alexandru Carauleanu, Ingrid-Andrada Vasilache, Iulian-Valentin Munteanu, Simona Mogos, Iustina Solomon-Condriuc, Luiza-Maria Baean, Demetra Socolov, Ana-Maria Adam, and Cristina Preda
- Subjects
PCOS ,obstetrical complications ,machine learning ,prediction ,Medicine (General) ,R5-920 - Abstract
Background and Objectives: Polycystic ovary syndrome (PCOS) is a complex disorder that can negatively impact the obstetrical outcomes. The aim of this study was to determine the predictive performance of four machine learning (ML)-based algorithms for the prediction of adverse pregnancy outcomes in pregnant patients diagnosed with PCOS. Materials and Methods: A total of 174 patients equally divided into 2 groups depending on the PCOS diagnosis were included in this prospective study. We used the Mantel–Haenszel test to evaluate the risk of adverse pregnancy outcomes for the PCOS patients and reported the results as a crude and adjusted odds ratio (OR) with a 95% confidence interval (CI). A generalized linear model was used to identify the predictors of adverse pregnancy outcomes in PCOS patients, quantifying their impact as risk ratios (RR) with 95% CIs. Significant predictors were included in four machine learning-based algorithms and a sensitivity analysis was employed to quantify their performance. Results: Our crude estimates suggested that PCOS patients had a higher risk of developing gestational diabetes and had a higher chance of giving birth prematurely or through cesarean section in comparison to patients without PCOS. When adjusting for confounders, only the odds of delivery via cesarean section remained significantly higher for PCOS patients. Obesity was outlined as a significant predictor for gestational diabetes and fetal macrosomia, while a personal history of diabetes demonstrated a significant impact on the occurrence of all evaluated outcomes. Random forest (RF) performed the best when used to predict the occurrence of gestational diabetes (area under the curve, AUC value: 0.782), fetal macrosomia (AUC value: 0.897), and preterm birth (AUC value: 0.901) in PCOS patients. Conclusions: Complex ML algorithms could be used to predict adverse obstetrical outcomes in PCOS patients, but larger datasets should be analyzed for their validation.
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- 2024
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236. Isolation of Staphylococcus pseudintermedius in Immunocompromised Patients from a Single Center in Spain: A Zoonotic Pathogen from Companion Animals
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Joaquim Viñes, Miguel Ángel Verdejo, Laura Horvath, Andrea Vergara, Jordi Vila, Olga Francino, Laura Morata, Mateu Espasa, Climent Casals-Pascual, Àlex Soriano, and Cristina Pitart
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Staphylococcus pseudintermedius ,ST551 ,MRSP ,MDR ,zoonosis ,SSTI ,Biology (General) ,QH301-705.5 - Abstract
Staphylococcus pseudintermedius, a commensal opportunistic bacterium predominantly residing in the skin of companion animals, particularly dogs, has the potential to induce skin and soft tissue infections in pets, and zoonotic infections, including catheter-related complications. This study documents four cases of S. pseudintermedius infection or colonization in patients who had close contact with dogs or cats. Identification of the bacterial species was performed using MALDI-TOF mass spectrometry, and antibiotic susceptibility was determined using microdilution assay. DNA was sequenced using Nanopore technology followed by in silico analysis. Three isolates were multidrug resistant, including resistance to methicillin, with one belonging to the prevalent European lineage ST551, and the other two were attributed to a novel multilocus sequence type, ST2672. The remaining isolate was attributed to the novel multilocus sequence type ST2673 and was methicillin susceptible. All four isolates exhibited an array of virulence factors that contributed to colonization, damage to host immune cells, and biofilm formation. All the ST551 isolates included in the comparative analysis displayed clonality within the European continent. The importance of describing zoonotic infections associated with S. pseudintermedius resides in the scarcity of available scientific literature, further accentuated by its heightened resistance profile and potential complications, particularly in the context of catheter-related infections.
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- 2024
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237. Treatments and the Perspectives of Developing a Vaccine for Chagas Disease
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Priscila Silva Grijó Farani, Kathryn Marie Jones, and Cristina Poveda
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Chagas ,vaccine ,new treatments ,Medicine - Abstract
Chagas disease (CD) treatment and vaccine development are critical due to the significant health burden caused by the disease, especially in Latin America. Current treatments include benznidazole and nifurtimox, which are most effective in the acute phase of the disease but less so in the chronic phase, often with significant side effects. Here, using the available literature, we summarize the progress in vaccine development and new treatments that promise to reduce CD incidence and improve the quality of life for those at risk, particularly in endemic regions. New treatment options, such as posaconazole and fexinidazole, are being explored to improve efficacy and reduce adverse effects. Vaccine development for CD remains a high priority. The complex life stages and genetic diversity of Trypanosoma cruzi present challenges, but several promising vaccine candidates are under investigation. These efforts focus on stimulating a protective immune response through various innovative approaches.
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- 2024
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238. Positive Allosteric Modulators of Trk Receptors for the Treatment of Alzheimer’s Disease
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Pontus Forsell, Cristina Parrado Fernández, Boel Nilsson, Johan Sandin, Gunnar Nordvall, and Märta Segerdahl
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neurotrophins ,brain-derived neurotrophic factor (BDNF) ,nerve growth factor (NGF) ,Alzheimer’s disease ,neurodegeneration ,Medicine ,Pharmacy and materia medica ,RS1-441 - Abstract
Neurotrophins are important regulators of neuronal and non-neuronal functions. As such, the neurotrophins and their receptors, the tropomyosin receptor kinase (Trk) family of receptor tyrosine kinases, has attracted intense research interest and their role in multiple diseases including Alzheimer’s disease has been described. Attempts to administer neurotrophins to patients have been reported, but the clinical trials have so far have been hampered by side effects or a lack of clear efficacy. Thus, much of the focus during recent years has been on identifying small molecules acting as agonists or positive allosteric modulators (PAMs) of Trk receptors. Two examples of successful discovery and development of PAMs are the TrkA-PAM E2511 and the pan-Trk PAM ACD856. E2511 has been reported to have disease-modifying effects in preclinical models, whereas ACD856 demonstrates both a symptomatic and a disease-modifying effect in preclinical models. Both molecules have reached the stage of clinical development and were reported to be safe and well tolerated in clinical phase 1 studies, albeit with different pharmacokinetic profiles. These two emerging small molecules are interesting examples of possible novel symptomatic and disease-modifying treatments that could complement the existing anti-amyloid monoclonal antibodies for the treatment of Alzheimer’s disease. This review aims to present the concept of positive allosteric modulators of the Trk receptors as a novel future treatment option for Alzheimer’s disease and other neurodegenerative and cognitive disorders, and the current preclinical and clinical data supporting this new concept. Preclinical data indicate dual mechanisms, not only as cognitive enhancers, but also a tentative neurorestorative function.
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- 2024
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239. SingleNucleotide Polymorphisms as Biomarkers of Mepolizumab and Benralizumab Treatment Response in Severe Eosinophilic Asthma
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Susana Rojo-Tolosa, José Antonio Sánchez-Martínez, Alberto Caballero-Vázquez, Laura Elena Pineda-Lancheros, María Victoria González-Gutiérrez, Cristina Pérez-Ramírez, Alberto Jiménez-Morales, and Concepción Morales-García
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asthma ,benralizumab ,mepolizumab ,personalized medicine ,polymorphisms ,real life ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
The most promising treatment options for severe uncontrolled asthma (SUA) have emerged in recent years with the development of monoclonal antibodies for blocking selective targets responsible for the underlying inflammation, such as mepolizumab and benralizumab. However, there is variability in treatment response that is not fully controlled. The variability of the response to mepolizumab and benralizumab could be influenced by single-nucleotide polymorphisms (SNPs), and it would be useful to detect these and use them as predictive biomarkers of response. We conducted a retrospective observational cohort study of 72 Caucasian patients recruited from a tertiary hospital with severe uncontrolled eosinophilic asthma treated with mepolizumab and benralizumab. Polymorphisms in the IL5 (rs4143832, rs17690122), RAD50 (rs11739623, rs4705959), IL1RL1 (rs1420101, rs17026974, rs1921622), GATA2 (rs4857855), IKZF2 (rs12619285), FCGR2A (rs1801274), FCGR2B (rs3219018, rs1050501), FCGR3A (rs10127939, rs396991), FCER1A (rs2251746, rs2427837), FCER1B (rs1441586, rs573790, rs569108), and ZNF415 (rs1054485) genes were analyzed by real-time polymerase chain reaction (PCR) using Taqman probes. The response was analyzed after 12 months of treatment. In patients under mepolizumab treatment, a treatment response defined as a reduction in exacerbations was associated with ZNF415 rs1054485-T (p = 0.042; OR = 5.33; 95% CI = 1.06–30.02), treatment response defined as a reduction in oral corticosteroids use was associated with the number of exacerbations in the previous year (p = 0.029; OR = 3.89; 95% CI = 1.24–14.92), and treatment response defined as improvement in lung function was associated with the age at the beginning of biological therapy (p = 0.002; OR = 1.10; 95% CI = 1.04–1.18), FCER1B rs569108-AA (p < 0.001; OR = 171.06; 95% CI = 12.94–6264.11), and FCER1A rs2427837-A (p = 0.021; OR = 8.61; 95% CI = 1.71–76.62). On the other hand, in patients under benralizumab treatment, treatment response, defined as a reduction in exacerbations, was associated with ZNF415 rs1054485-T (p = 0.073; OR = 1.3 × 108; 95% CI = 1.8 × 10−19–NA), FCER1B rs569108-AA (p = 0.050; OR = 11.51; 95% CI = 1.19–269.78), allergies (p = 0.045; OR = 4.02; 95% CI = 1.05–16.74), and sex (p = 0.028; OR = 4.78; 95% CI = 1.22–20.63); and treatment response defined as improvement in lung function was associated with polyposis (p = 0.027; OR = 9.16; 95% CI = 1.58–91.4), IKZF2 rs12619285-AA (p = 0.019; OR = 9.1; 95% CI = 1.7–75.78), IL5 rs4143832-T (p = 0.017; OR = 11.1; 95% CI = 1.9–112.17), and FCER1B rs1441586-C (p = 0.045; OR = 7.81; 95% CI = 1.16–73.45). The results of this study show the potential influence of the studied polymorphisms on the response to mepolizumab and benralizumab and the clinical benefit that could be obtained by defining predictive biomarkers of treatment response.
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- 2024
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240. Role of ATG4 Autophagy-Related Protein Family in the Lower Airways of Patients with Stable COPD
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Francesco Nucera, Antonino Di Stefano, Fabio Luigi Massimo Ricciardolo, Isabella Gnemmi, Cristina Pizzimenti, Francesco Monaco, Giovanni Tuccari, Gaetano Caramori, and Antonio Ieni
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autophagy ,chronic obstructive pulmonary disease ,ATG4 ,treatment ,lung disease ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Autophagy is a complex physiological pathway mediating homeostasis and survival of cells degrading damaged organelles and regulating their recycling. Physiologic autophagy can maintain normal lung function, decrease lung cellular senescence, and inhibit myofibroblast differentiation. It is well known that autophagy is activated in several chronic inflammatory diseases; however, its role in the pathogenesis of chronic obstructive pulmonary disease (COPD) and the expression of autophagy-related genes (ATGs) in lower airways of COPD patients is still controversial. The expression and localization of all ATG proteins that represented key components of the autophagic machinery modulating elongation, closure, and maturation of autophagosome membranes were retrospectively measured in peripheral lungs of patients with stable COPD (n = 10), control smokers with normal lung function (n = 10), and control nonsmoking subjects (n = 8) using immunohistochemical analysis. These results show an increased expression of ATG4 protein in alveolar septa and bronchiolar epithelium of stable COPD patients compared to smokers with normal lung function and non-smoker subjects. In particular, the genes in the ATG4 protein family (including ATG4A, ATG4B, ATG4C, and ATG4D) that have a key role in the modulation of the physiological autophagic machinery are the most important ATGs increased in the compartment of lower airways of stable COPD patients, suggesting that the alteration shown in COPD patients can be also correlated to impaired modulation of autophagic machinery modulating elongation, closure, and maturation of autophagosomes membranes. Statistical analysis was performed by the Kruskal–Wallis test and the Mann–Whitney U test for comparison between groups. A statistically significant increased expression of ATG4A (p = 0.0047), ATG4D (p = 0.018), and ATG5 (p = 0.019) was documented in the bronchiolar epithelium as well in alveolar lining for ATG4A (p = 0.0036), ATG4B (p = 0.0054), ATG4C (p = 0.0064), ATG4D (p = 0.0084), ATG5 (p = 0.0088), and ATG7 (p = 0.018) in patients with stable COPD compared to control groups. The ATG4 isoforms may be considered as additional potential targets for the development of new drugs in COPD.
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- 2024
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241. Multilayer Film Comprising Polybutylene Adipate Terephthalate and Cellulose Nanocrystals with High Barrier and Compostable Properties
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Beatriz Melendez-Rodriguez, Cristina Prieto, Maria Pardo-Figuerez, Inmaculada Angulo, Ana I. Bourbon, Isabel R. Amado, Miguel A. Cerqueira, Lorenzo M. Pastrana, Loic Hugues Gilles Hilliou, António A. Vicente, Luis Cabedo, and Jose M. Lagaron
- Subjects
biopolyesters ,nanocellulose ,multilayers ,compostable ,packaging ,migration ,Organic chemistry ,QD241-441 - Abstract
In the present study, a multilayer, high-barrier, thin blown film based on a polybutylene adipate terephthalate (PBAT) blend with polyhydroxyalkanoate (PHA), and composed of four layers including a cellulose nanocrystal (CNC) barrier layer and an electrospun poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) hot-tack layer, was characterized in terms of the surface roughness, surface tension, migration, mechanical and peel performance, barrier properties, and disintegration rate. The results showed that the film exhibited a smooth surface. The overall migration tests showed that the material is suitable to be used as a food contact layer. The addition of the CNC interlayer had a significant effect on the mechanical properties of the system, drastically reducing the elongation at break and, thus, the flexibility of the material. The film containing CNCs and electrospun PHBV hot-tack interlayers exhibited firm but not strong adhesion. However, the multilayer was a good barrier to water vapor (2.4 ± 0.1 × 10−12 kg·m−2·s−1·Pa−1), and especially to oxygen (0.5 ± 0.3 × 10−15 m3·m−2·s−1·Pa−1), the permeance of which was reduced by up to 90% when the CNC layer was added. The multilayer system disintegrated completely in 60 days. All in all, the multilayer system developed resulted in a fully compostable structure with significant potential for use in high-barrier food packaging applications.
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- 2024
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242. Raman Study of Novel Nanostructured WO3 Thin Films Grown by Spray Deposition
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Andreea Gabriela Marina Popescu, Ioan Valentin Tudose, Cosmin Romanitan, Marian Popescu, Marina Manica, Paul Schiopu, Marian Vladescu, Mirela Petruta Suchea, and Cristina Pachiu
- Subjects
Raman spectroscopy ,tungsten oxide ,spray pyrolysis ,thin films ,Chemistry ,QD1-999 - Abstract
The present communication reports on the effect of the sprayed solution volume variation (as a thickness variation element) on the detailed Raman spectroscopy for WO3 thin films with different thicknesses grown from precursor solutions with two different concentrations. Walls-like structured monoclinic WO3 thin films were obtained by the spray deposition method for further integration in gas sensors. A detailed analysis of the two series of samples shows that the increase in thickness strongly affects the films’ morphology, while their crystalline structure is only slightly affected. The Raman analysis contributes to refining the structural feature clarifications. It was observed that, for 0.05 M precursor concentration series, thinner films (lower volume) show less intense peaks, indicating more defects and lower crystallinity, while thicker films (higher volume) exhibit sharper and more intense peaks, suggesting improved crystallinity and structural order. For higher precursor concentration 0.1 M series, films at higher precursor concentrations show overall more intense and sharper peaks across all thicknesses, indicating higher crystallinity and fewer defects. Differences in peak intensity and presence reflect variations in film morphology and structural properties due to increased precursor concentration. Further studies are ongoing.
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- 2024
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243. Integrating sEMG and IMU Sensors in an e-Textile Smart Vest for Forward Posture Monitoring: First Steps
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João Martins, Sara M. Cerqueira, André Whiteman Catarino, Alexandre Ferreira da Silva, Ana M. Rocha, Jorge Vale, Miguel Ângelo, and Cristina P. Santos
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e-Textiles ,Wearables ,Textile dry sEMG sensors ,IMUs ,Forward Head Posture ,Chemical technology ,TP1-1185 - Abstract
Currently, the market for wearable devices is expanding, with a growing trend towards the use of these devices for continuous-monitoring applications. Among these, real-time posture monitoring and assessment stands out as a crucial application given the rising prevalence of conditions like forward head posture (FHP). This paper proposes a wearable device that combines the acquisition of electromyographic signals from the cervical region with inertial data from inertial measurement units (IMUs) to assess the occurrence of FHP. To improve electronics integration and wearability, e-textiles are explored for the development of surface electrodes and conductive tracks that connect the different electronic modules. Tensile strength and abrasion tests of 22 samples consisting of textile electrodes and conductive tracks produced with three fiber types (two from Shieldex and one from Imbut) were conducted. Imbut’s Elitex fiber outperformed Shieldex’s fibers in both tests. The developed surface electromyography (sEMG) acquisition hardware and textile electrodes were also tested and benchmarked against an electromyography (EMG) gold standard in dynamic and isometric conditions, with results showing slightly better root mean square error (RMSE) values (for 4 × 2 textile electrodes (10.02%) in comparison to commercial Ag/AgCl electrodes (11.11%). The posture monitoring module was also validated in terms of joint angle estimation and presented an overall error of 4.77° for a controlled angular velocity of 40°/s as benchmarked against a UR10 robotic arm.
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- 2024
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244. Impact of a Bundle of Interventions on Quality-of-Care Indicators for Staphylococcus aureus Bacteraemia: A Single-Centre, Quasi-Experimental, Before–After Study
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Giacomo Casalini, Cristina Pagani, Andrea Giacomelli, Laura Galimberti, Laura Milazzo, Massimo Coen, Serena Reato, Beatrice Caloni, Stefania Caronni, Simone Pagano, Samuel Lazzarin, Anna Lisa Ridolfo, Sara Giordana Rimoldi, Andrea Gori, and Spinello Antinori
- Subjects
Staphylococcus aureus bacteraemia ,SAB ,antimicrobial stewardship ,quality-of-care indicators ,infectious disease consultations ,quality improvement ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Staphylococcus aureus bacteraemia (SAB) is a life-threatening bloodstream infection. Improved adherence to quality-of-care indicators (QCIs) can significantly enhance patient outcomes. This quasi-experimental study evaluated the impact of a bundle of interventions on QCI adherence in adult patients with SAB. Additionally, a molecular rapid diagnostic test (mRDT) for S. aureus and methicillin resistance was introduced during weekdays. We compared pre-intervention (January–December 2022) and post-intervention (May 2023–April 2024) data on QCI adherence and time to appropriate treatment. A total of 56 and 40 SAB episodes were included in the pre- and post-intervention periods, respectively. Full QCI adherence significantly increased from 28.6% to 67.5% in the post-intervention period (p < 0.001). The mRDT diagnosed SAB in eight cases (26.6%), but the time to achieve appropriate target therapy did not improve in the post-intervention period (54 h (IQR 30–74) vs. 72 h (IQR 51–83), p = 0.131). The thirty-day mortality rate was comparable between the two periods (17.9% vs. 12.5%, p = 0.476). This study demonstrates that a bundle of interventions can substantially improve adherence to SAB management QCIs.
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- 2024
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245. Tumoral Malignancy Decreases Coupled with Higher ROS and Lipid Peroxidation in HCT116 Colon Cancer Cells upon Loss of PRDX6
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Daniel J. Lagal, Antonio M. Montes-Osuna, Alberto Ortiz-Olivencia, Candela Arribas-Parejas, Ángel Ortiz-Alcántara, Cristina Pescuezo-Castillo, José Antonio Bárcena, Carmen Alicia Padilla, and Raquel Requejo-Aguilar
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cancer ,ROS ,peroxiredoxin 6 ,lipid peroxidation ,malignancy ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Peroxiredoxin 6 (PRDX6) is an atypical member of the peroxiredoxin family that presents not only peroxidase but also phospholipase A2 and lysophosphatidylcholine acyl transferase activities able to act on lipid hydroperoxides of cell membranes. It has been associated with the proliferation and invasive capacity of different tumoral cells including colorectal cancer cells, although the effect of its removal in these cells has not been yet studied. Here, using CRISPR/Cas9 technology, we constructed an HCT116 colorectal cancer cell line knockout for PRDX6 to study whether the mechanisms described for other cancer cells in terms of proliferation, migration, and invasiveness also apply in this tumoral cell line. HCT116 cells lacking PRDX6 showed increased ROS and lipid peroxidation, a decrease in the antioxidant response regulator NRF2, mitochondrial dysfunction, and increased sensitivity to ferroptosis. All these alterations lead to a decrease in proliferation, migration, and invasiveness in these cells. Furthermore, the reduced migratory and invasive capacity of HCT116 cancer cells is consistent with the observed cadherin switch and decrease in pro-invasive proteins such as MMPs. Therefore, the mechanism behind the effects of loss of PRDX6 in HCT116 cells could differ from that in HepG2 cells which is coherent with the fact that the correlation of PRDX6 expression with patient survival is different in hepatocellular carcinomas. Nonetheless, our results point to this protein as a good therapeutic target also for colorectal cancer.
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- 2024
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246. Family Support, Resilience, and Life Goals of Young People in Residential Care
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Cristina Peixoto Alves, Inês Carvalho Relva, Mónica Costa, and Catarina Pinheiro Mota
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family support ,life goals ,resilience ,life projects ,young ,residential care ,Psychology ,BF1-990 - Abstract
Establishing goals for young people in residential care (RC) is a gap in the literature, especially in terms of the relationship between family support and resilience. The literature suggests that RC is associated with the breakdown of family relationships, so the possibility of the family playing a positive role in establishing life goals for young people is reduced. However, family support in the context of organization and stability can be assumed to be a protective factor for the formulation of life goals and contribute to the resilient development of young people. This study aimed to analyze the role of family support in the process of setting goals for young people in RC, as well as to analyze the potential mediating role of resilience in the previous association. The sample included 124 young people aged between 12 and 23 years living in RC. The results point to a positive association between family support (autonomy) and the planning of life goals and verify the total mediating effect of resilience in this association. The results are discussed considering attachment theory and the role of the family in the adaptive development of young people. This study’s findings provide important indications for developing future interventions.
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- 2024
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247. Simultaneous Expression of Different Therapeutic Genes by Infection with Multiple Oncolytic HSV-1 Vectors
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Adriana Vitiello, Alberto Reale, Valeria Conciatori, Anna Vicco, Alfredo Garzino-Demo, Giorgio Palù, Cristina Parolin, Jens von Einem, and Arianna Calistri
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virotherapy ,immunotherapy ,HSV-1 ,combinatorial approach ,Biology (General) ,QH301-705.5 - Abstract
Oncolytic viruses (OVs) are anti-cancer therapeutics combining the selective killing of cancer cells with the triggering of an anti-tumoral immune response. The latter effect can be improved by arming OVs with immunomodulatory factors. Due to the heterogeneity of cancer and the tumor microenvironment, it is anticipated that strategies based on the co-expression of multiple therapeutic molecules that interfere with different features of the target malignancy will be more effective than mono-therapies. Here, we show that (i) the simultaneous expression of different proteins in triple-negative breast cancer (TNBC) cells can be achieved through their infection with a combination of OVs based on herpes simplex virus type 1 (oHSV1), each encoding a single transgene. (ii) The level of expressed proteins is dependent on the number of infectious viral particles utilized to challenge tumor cells. (iii) All recombinant viruses exhibited comparable efficacy in the killing of TNBC cells in single and multiple infections and showed similar kinetics of replication. Overall, our results suggest that a strategy based on co-infection with a panel of oHSV1s may represent a promising combinatorial therapeutic approach for TNBC, as well as for other types of solid tumors, that merits further investigation in more advanced in vitro and in vivo models.
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- 2024
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248. Managing Patients with Hypereosinophilic Syndrome: A Statement from the Italian Society of Allergy, Asthma, and Clinical Immunology (SIAAIC)
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Marco Caminati, Luisa Brussino, Matilde Carlucci, Palma Carlucci, Lucia Federica Carpagnano, Cristiano Caruso, Lorenzo Cosmi, Simona D’Amore, Stefano Del Giacco, Aikaterini Detoraki, Mario Di Gioacchino, Andrea Matucci, Ilaria Mormile, Francescopaolo Granata, Gabriella Guarnieri, Mauro Krampera, Matteo Maule, Eustachio Nettis, Stefania Nicola, Silvia Noviello, Fabrizio Pane, Cristina Papayannidis, Paola Parronchi, Girolamo Pelaia, Erminia Ridolo, Francesca Wanda Rossi, Gianenrico Senna, Massimo Triggiani, Angelo Vacca, Emanuele Vivarelli, Alessandra Vultaggio, and Amato de Paulis
- Subjects
eosinophils ,hypereosinophilia ,hypereosinophilic syndrome ,mepolizumab ,management ,network ,Cytology ,QH573-671 - Abstract
Hypereosinophilic syndrome (HES) encompasses a heterogeneous and complex group of different subtypes within the wider group of hypereosinophilic disorders. Despite increasing research interest, several unmet needs in terms of disease identification, pathobiology, phenotyping, and personalized treatment remain to be addressed. Also, the prospective burden of non-malignant HES and, more in general, HE disorders is currently unknown. On a practical note, shortening the diagnostic delay and the time to an appropriate treatment approach probably represents the most urgent issue, even in light of the great impact of HES on the quality of life of affected patients. The present document represents the first action that the Italian Society of Allergy, Asthma, and Clinical Immunology (SIAAIC) has finalized within a wider project aiming to establish a collaborative national network on HES (InHES—Italian Network on HES) for patients and physicians. The first step of the project could not but focus on defining a common language as well as sharing with all of the medical community an update on the most recent advances in the field. In fact, the existing literature has been carefully reviewed in order to critically integrate the different views on the topic and derive practical recommendations on disease identification and treatment approaches.
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- 2024
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249. Exploring Polymer-Based Additive Manufacturing for Cost-Effective Stamping Devices: A Feasibility Study with Finite Element Analysis
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Cristian Giolu, Cristina Pupăză, and Cătălin Gheorghe Amza
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MEX ,additive manufacturing ,stamping die ,bending ,deep drawing ,sheet metal ,Organic chemistry ,QD241-441 - Abstract
This research investigates the feasibility of manufacturing stamping devices using Material Extrusion (MEX) Additive Manufacturing (AM) technology, traditionally fabricated from metal, to reduce production costs and time. This study examines polymer-based devices subjected to Finite Element Analysis (FEA) to evaluate their performance in stamping metal sheets of varying thicknesses. The findings reveal that ABS polymer devices, while demonstrating potential, operate near the material’s limit under compression forces, particularly for sheet thicknesses up to 1 mm. Specifically, differences of 0.7 mm were observed at the connection radii of 0.25 mm sheets and 1.4 mm for 0.5 mm sheets, with angular deviations of 1.5 degrees for 0.25 mm sheets and 4 degrees for 0.5 mm sheets. Additionally, devices made of Nylon were deemed suitable for reduced-thickness sheets (0.25 mm), performing better than those made of ABS. These results suggest that while ABS devices exhibit significant deviations (up to 45 degrees for 1 mm sheets), the method shows promise for small batch production and prototyping. Further optimisation through material enhancements and mechanical improvements is recommended to minimise deformations and enhance precision.
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- 2024
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250. Cadmium Removal by Adsorption on Biochars Derived from Wood Industry and Craft Beer Production Wastes
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Daiana Simón, Cristina Palet, and Adrián Cristóbal
- Subjects
barley waste-derived biochar ,sawdust waste-derived biochar ,cadmium adsorption ,multimetal solution ,circular economy ,spent adsorbents ,Hydraulic engineering ,TC1-978 ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
Cadmium pollution is a serious environmental issue that has an impact on both the ecosystem and human health. As a result, its removal from water is essential. Agro-industrial wastes are suggested as a sustainable adsorbent option, as they are among the most readily available renewable sources worldwide. Biochar is a carbonized biomass that has been shown to be a viable and novel adsorbent. This article compares the results of cadmium adsorption on biochars derived from wood industry and craft beer production wastes. Biochars were characterized before and after adsorption. Batch adsorption results of 0.18 mmol/L Cd(II) concentration solutions indicated adsorption percentages (A%) of 99.7% and 92.2% for sawdust biochar and barley biochar, respectively. For this cadmium concentration, the sawdust biochar presented an adsorption capacity (qm) of 0.0172 mmol/L, while the barley biochar presented a value of 0.0159 mmol/L. The influence of initial Cd(II) concentration on single and multimetal solutions was studied, and a decrease in Cd(II) adsorption on sawdust biochar was observed in the presence of Ni(II) and Zn(II). The Freundlich isotherm model was found to be the best fit to the data for Cd(II) adsorption isotherms on both biochars. According to the results of this article, sawdust biochar has the best performance as an adsorbent and can be safely disposed of in building bricks at the end of its useful life.
- Published
- 2024
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