Publications by authors named "Ricardo Pinto"

Background And Aims: The first international guideline for managing preneoplastic conditions of the stomach (MAPS I) was published in 2012, followed by an update (MAPS II) in 2019. As adherence to these guidelines remains uncertain, we evaluated adherence by comparing the management of preneoplastic gastric conditions before and after the introduction of MAPS I and II in selected European centers.

Methods: Patients data were retrieved from nine endoscopy units in seven European countries during three periods: pre-MAPS I (2010/2011), post-MAPS I (2017/2018), and post-MAPS II (2022/2023).

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Rising global temperatures are increasingly affecting plant performance, leading to reduced growth, altered metabolism, and compromised membrane integrity. Although plant growth-promoting bacteria (PGPB) show promise in enhancing thermotolerance, the underlying mechanisms remain insufficiently explored. Therefore, this study investigated the effects of PGPB inoculation on under control (26 °C) and heat stress (36 °C) conditions.

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Huntington's disease (HD) is a fatal neurodegenerative disorder caused by inheriting an expanded CAG repeat tract in the huntingtin gene () that further expands in somatic cells over an individual's lifetime. Genome-wide association studies have provided critical insight into factors that modify the course of disease. These include DNA repair genes that alter the rate of somatic expansion and other genes that do not appear to directly influence this process.

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Aim: To comprehensively compare 12 nickel-titanium (NiTi) reciprocating single-file systems from eight manufacturers by integrating geometric, mechanical, metallurgical and in silico analyses.

Methodology: A total of 276 NiTi reciprocating instruments, representing 12 types across 8 brands, were selected, including Easy-File Flex Regular 25, EdgeOne Fire Primary, Flash 25.06vt, One Files R25 and Blue R25, One RECI N25, Perfect RC R25 (Blue, Gold and Silver), Reciproc R25 (Blue and M-Wire) and WaveOne Gold Primary.

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Aggregation-prone polyglycine-containing proteins produced from expanded GGC repeats are implicated in an emerging family of neurodegenerative disorders. In this study, we showed that polyglycine itself forms aggregates that incorporate endogenous glycine-rich proteins, including FAM98B, a component of the transfer RNA (tRNA) ligase complex (tRNA-LC) that harbors the most glycine-rich sequence in the human proteome. Through this glycine-rich intrinsically disordered region (IDR), polyglycine sequesters and depletes the tRNA-LC, disrupting tRNA processing.

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Introduction: The phenomenon of dropout in higher education needs the acknowledging of its multi-domain complexity. In the post-pandemic era, exhaustion may be a relevant feature affecting students. This cross-sectional study aimed primarily to test a predictive model of five domains of variables (background, academic, social, psychological, and economic) on dropout intention, in a relation mediated by academic exhaustion.

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The successful replication of the intricate architecture of human tissues remains a major challenge in the biomedical area. Three-dimensional (3D) bioprinting has emerged as a promising approach for the biofabrication of living tissue analogues, taking advantage of the use of adequate bioinks and printing methodologies. Here, a hydrogel bioink based on gelatin (Gel) and nanofibrillated cellulose (NFC), cross-linked with genipin, was developed for the 3D extrusion-based bioprinting of hepatocarcinoma cells (HepG2).

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The burden of triple-negative breast cancer (TNBC) may be shaped by genetic factors, particularly inherited and somatic mutation profiles. However, data on this topic remain limited, especially for the African continent, where a higher TNBC incidence is observed. In the age of precision medicine, cataloguing TNBC diversity in African patients becomes imperative.

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Haematopoietic stem cell transplantation (HCT) induces profound immunosuppression, significantly increasing susceptibility to severe infections. This review examines vaccinations' necessity, timing, and efficacy post-HCT to reduce infection-related morbidity and mortality. It aims to provide a structured protocol aligned with international and national recommendations.

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Background/objectives: This study aimed to compare the cost and time implications for implant-supported prosthesis comparing three digital impression techniques: digitization with an intraoral scanner, digitization of the conventional impression (without dental casts) and digitization of the stone models.

Methods: To assess the time and cost of digital impression techniques on implants, time records on intraoral scans were consulted and three models were created with one, two and six implants to assess extraoral procedures time. Costs were evaluated based on material consumption, time expenditure and operator-related expenses.

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Huntington's disease (HD) arises from a CAG expansion in the () gene beyond a critical threshold. A major thrust of current HD therapeutic development is lowering levels of mutant mRNA (m) and protein (mHTT) with the aim of reducing the toxicity of these product(s). Human genetic data also support a key role for somatic instability (SI) in 's CAG repeat - whereby it lengthens with age in specific somatic cell types - as a key driver of age of motor dysfunction onset.

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Coronavirus is an infectious disease that has left tens of millions of deaths around the world, and which has had social, economic, emotional, and psychological consequences. To mitigate the spread of the virus, several countries have adopted restrictive measures that impacted the way people experienced the end-of-life and the death of their loved one. This study aimed to identify the variables associated with prolonged grief symptoms in the context of both pandemic-related losses and the unique challenges related to end-of-life care.

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Article Synopsis
  • - Febrile neutropenia (FN) is a serious condition, especially for patients in hematology and oncology, where there's a risk of multidrug-resistant bacteria, leading to varied antimicrobial practices due to differing guidelines.
  • - A survey of Portuguese hematologists explored treatment approaches in FN management, using clinical scenarios to gather data on preferences for narrow-spectrum antibiotics, short-course therapy, and de-escalation strategies.
  • - Results showed all participants preferred narrow-spectrum antibiotics, while a minority chose short-course therapy or de-escalation, indicating a need for better protocols and interventions to optimize antibiotic use in FN cases.
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Objective: Youth who have been exposed to potentially traumatic events are at risk of developing chronic and severe adjustment problems. However, some youth exposed to potentially traumatic events exhibit better-than-expected adaptation. Person-centered analyses, based on multiple criteria for adaptive behavior and adversity, are well-suited to empirically identifying different patterns of adaptation among high-risk youth.

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Introduction: This study aimed to compare a new multicolored rotary system with four heat-treated rotary instruments using the multimethod approach.

Methods: Three-hundred instruments of RCS Rainbow, Rotate, RaCe EVO, OneCurve, and ProTaper Ultimate systems were evaluated regarding their design (stereomicroscopy, scanning electron microscopy, and 3D surface scanning), metallurgy, and mechanical performance (cyclic fatigue, torsional resistance, bending and buckling resistance, and cutting ability). Unprepared surfaces after canal preparation of maxillary molars were evaluated using micro-computed tomography.

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Cytomegalovirus (CMV) is a type of double-stranded deoxyribonucleic acid virus belonging to the herpesviridae family. Following a primary infection, the virus becomes latent in various types of white blood cells. Cytomegalovirus infection can remain latent or become active, especially in immunocompromised individuals, such as those undergoing hematopoietic stem cell transplantation (HSCT), where CMV reactivation can occur.

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First responders (FRs) are continuously exposed to critical incidents, considered traumatic events (TEs). This cumulative exposure increases the risk for post-traumatic stress disorder (PTSD). However, there is no evidence about the relationship between PTSD symptoms and emergency decision-making (EDM).

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Article Synopsis
  • Huntington's disease (HD) is caused by a CAG repeat expansion and is part of a group of disorders linked to unstable short tandem repeats, highlighting the complexity of genetic influences on the disease.
  • Research indicates that both overlapping and unique genetic modifiers affect clinical symptoms and somatic expansion in blood DNA, pointing to specific cell-type interactions in mismatch repair processes.
  • The study identifies a 5'-UTR variant that causes somatic expansion without altering clinical HD, and a specific sequence change that accelerates motor symptom onset without increasing expansion, emphasizing potential therapeutic targets for managing HD.
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Direct scanning of silicone impressions is a valid technique. However, studies in implant-supported rehabilitations are lacking. This in vitro study aims to compare the trueness of impressions obtained with two types of silicone and their corresponding stone casts, using two laboratory scanners in a full-arch implant rehabilitation.

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Soil is an environment with numerous niches, where bacteria are exposed to diverse conditions. Some bacteria are exposed earlier than others to pressure, and the emission of signals that other bacteria can receive and perceive may allow a better response to an eminent stimulus. To shed light on how bacteria trigger their response and adapt to changes in the environment, the intra- and interspecific influences of volatiles on bacterial strains growing under non-stressed and cadmium-stressed conditions were assessed.

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The presence of plastic particles in oceans has been recognized as a major environmental concern. The decrease in particle size increases their ability to directly interact with biota, with particles in the nanometer size range (nanoplastics-NPs) displaying a higher ability to penetrate biological membranes, which increases with the decrease in particle size. This study aimed to evaluate the role of life stages in the effects of poly(methyl)methacrylate (PMMA) NPs on the polychaete , a key species in the marine food web and nutrient cycle.

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Current research in cancer therapy focuses on personalized therapies, through nanotechnology-based targeted drug delivery systems. Particularly, controlled drug release with nanoparticles (NPs) can be designed to safely transport various active agents, optimizing delivery to specific organs and tumors, minimizing side effects. The use of microfluidics (MFs) in this field has stood out against conventional methods by allowing precise control over parameters like size, structure, composition, and mechanical/biological properties of nanoscale carriers.

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Biopolymeric nanoparticles (NPs) have gained significant attention in several areas as an alternative to synthetic polymeric NPs due to growing environmental and immunological concerns. Among the most promising biopolymers is poly(lactic acid) (PLA), with a reported high degree of biocompatibility and biodegradability. In this work, PLA NPs were synthesized according to a controlled gelation process using a combination of single-emulsion and nanoprecipitation methods.

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Introduction And Objectives: Idiopathic ventricular fibrillation (IVF) is diagnosed in patients who survive sudden cardiac arrest (SCA), preferably with documented ventricular fibrillation (VF), without any identifiable structural or electrical abnormality. Current evidence provides limited guidance on the diagnosis and follow-up of these patients. Our aim was to assess the clinical outcomes of survivors of an aborted SCA attributed to IVF.

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Article Synopsis
  • The study aimed to develop clinical guidelines for using intraoperative neuromonitoring (IONM) to detect spinal cord injuries during spine surgery, targeting high-risk patients and establishing management protocols.
  • The research involved a systematic review following PRISMA standards and GRADE protocols, with an international team reaching consensus on recommendations for IONM effectiveness and diagnostic accuracy.
  • Key recommendations included using IONM for high-risk spine surgery patients and promoting proactive identification and interdisciplinary management strategies for those at risk of intraoperative spinal cord injury.
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