Publications by authors named "Joao Pinto"

Background: Gastric cancer (GC) remains a major global health problem. Despite a decline in its incidence, GC is still the third most lethal cancer worldwide.

Background: Multimodal treatment approaches are employed, including chemotherapy (CMT), radiotherapy (RDT), surgery, expanded criteria for endoscopic resection, and increased use of minimally invasive surgery.

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Objective: The absolute and relative quantification of tumor cell fraction (TCF) in tissue samples for molecular pathology testing is time-consuming and poorly reproducible.

Methods: Here we report the results of an international survey on non-small cell lung cancer (NSCLC), validating the Qupath Analysis of Nuclei from Tumor to Uniform Molecular tests (QuANTUM) automated computational pipeline for TCF quantification.

Results: The TCF obtained with QuANTUM is reliable, as demonstrated by the comparison with the manual counting of cells (ground truth, GT) in cell blocks, small biopsies and surgical specimens (overall correlation of 0.

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Importance: Tumor-infiltrating lymphocytes (TILs) are a provocative biomarker in melanoma, influencing diagnosis, prognosis, and immunotherapy outcomes; however, traditional pathologist-read TIL assessment on hematoxylin and eosin-stained slides is prone to interobserver variability, leading to inconsistent clinical decisions. Therefore, development of newer TIL scoring approaches that produce more reliable and consistent readouts is important.

Objective: To evaluate the analytical and clinical validity of a machine learning algorithm for TIL quantification in melanoma compared with traditional pathologist-read methods.

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The liquid-to-solid (L/S) ratio is a key process parameter in wet granulation processes, which ensures that the final granules meet the desired quality attributes. Mixer torque rheometer (MTR) is an established instrument to determine this parameter by measuring torque changes as a function of liquid content. Therefore, this study aimed to assess whether IKA Magic Plant and Freeman FT4 powder rheometer could serve as reliable alternatives to the MTR for developing a material sparing method for L/S ratio determination.

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Vector-borne diseases, particularly arboviral diseases transmitted by mosquitoes (e.g. dengue, Zika and chikungunya), have (re)emerged globally with increasing prevalence and severity.

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Objective: This systematic review aimed to evaluate the efficacy and safety of alternative antibiotics and different standard treatment regimens for bacterial meningitis in children, considering the increasing antimicrobial resistance and the need for adapted therapeutic options. To justify the use of alternative antibiotics, the authors analyzed the specific efficacy of ampicillin, chloramphenicol, cefuroxime and meropenem, which showed potential to overcome cases of antimicrobial resistance.

Data Sources: A search was performed in databases such as PubMed, Scopus, Web of Science and Cochrane Library, without data restrictions, including planned clinical trials that compared alternative antibiotics and different standard treatment regimens, such as ceftriaxone, in children with bacterial meningitis.

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We present a comprehensive set of LA-Q-ICP-MS U-Pb ages on titanite standards (Tory Hill, Khan, Mud Tank, and CKHB titanites) together with samples from the Southeastern Guiana Shield, as a geological application of the method implemented at the Pará-Iso Laboratory. The results showed good reproducibility, accuracy, and precision for Mesoproterozoic to Mesozoic titanite standards, with uncertainties below 2%. The analytical protocol was validated through interlaboratory calibration with SHRIMP IIe dating, yielding ages consistent with LA-Q-ICP-MS results.

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The Asian tiger mosquito, , is currently the most widespread invasive mosquito species in the world. It poses a significant threat to human health, as it is a vector for several arboviruses. We used a SNP chip to genotype 748 mosquitoes from 41 localities across Europe, 28 localities in the native range in Asia, and 4 in the Americas.

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Background: The Asian tiger mosquito, Aedes albopictus (Skuse, 1894), is a highly invasive species that has successfully colonized many tropical and temperate regions worldwide. Its rapid global spread is strongly associated with human activities and has created favorable conditions for the emergence of human arboviruses in new geographic areas.

Methods: Mosquito larvae were collected by community health workers from different breeding sites and reared to adults in a field insectary.

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The rapid growth of electronic waste, including fluorescent lamp waste (FLW), has led to an increase in elements like yttrium (Y) and other rare earth elements (REE) in aquatic environments due to improper waste management. However, there are no guidelines for permissible concentrations of these elements in the environment. This study examines the biochemical impacts of varying Y concentrations (50, 100, and 200 µg L), mimicking a FLW discharge, on the gills and digestive gland of Mytilus galloprovincialis exposed for 14 days.

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Objectives The aim of this anatomical study was to analyze distances and anatomical relations between the lower cranial nerves and important neck landmarks. Methods Anatomical study based on neck dissection in Thiel-embalmed cadavers. Anatomical relations and distances between the vagus (X), accessory (XI), and hypoglossal (XII) nerves and important neck landmarks were registered and compared.

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Background: Culex quinquefasciatus plays a crucial role as a vector of West Nile virus (WNV). This mosquito species is widely distributed in Cape Verde, being found in all inhabited islands of the archipelago. However, no data are currently available on the susceptibility of the local mosquito population to WNV.

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Background: Insecticide-based malaria vector control has been implemented on the islands of São Tomé and Príncipe (STP) for more than 20 years. During this period malaria incidence was significantly reduced to pre-elimination levels. While cases remained low since 2015, these have significantly increased in the last year, challenging the commitment of the country to achieve malaria elimination by 2025.

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Purpose: The main objective of this study was to compare laryngeal dystonia (LD) and vocal tremor's (VT) response to botulinum toxin injection.

Methods: Retrospective study including every patient with LD or VT injected with botulinum toxin guided by electromyography, from January 1, 2010, to September 30, 2022, at a tertiary hospital centre. Improvement was assessed with the VHI-10, grade of dysphonia in a visual analogue scale (VAS; 0-10), GRBAS(I) scale (0-3) and maximum phonation time (MPT).

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The digital transformation of pathology, through automation and computational tools, addresses current challenges in the field. This study evaluates Paige Pan Cancer, a novel artificial intelligence tool based on the Virchow foundation model, designed to flag invasive cancer in haematoxylin and eosin-stained slides from 16 primary tissue types. Using 62 cases from the Ipatimup Pathology Laboratory, we found the tool had a sensitivity of 93.

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Article Synopsis
  • The study focuses on a malaria vector prevalent in West Africa and specifically in São Tomé and Príncipe, aiming to assess its population genetics for potential field trials of genetically engineered organisms.
  • The engineered organisms feature genes that produce anti-Plasmodium peptides and utilize a Cas9-based gene drive, with research examining gene flow and dispersal rates among different subpopulations on the islands.
  • Analysis suggests a dispersal range of about 3-7 km, indicating the complexity of these dynamics and leading to the conclusion that a minimally impactful gene drive could spread easily across the islands.
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Mechanical perturbations of drug during solid pharmaceutical processing like milling can often generate crystal disorder posing serious implications to drug's stability. While physical changes like amorphization, recrystallization, polymorphism of the disordered drugs are extensively studied and reported in the literature, the propensities and inter-dependencies of recrystallization and degradation of disordered drugs have seldom received deep attention. Previous investigations from our lab have explored some of these interplays, aiming to develop predictive stability models.

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The global distribution of mosquitoes, particularly in tropical regions, poses a significant public health risk due to their apparent ability to transmit arboviruses such as West Nile virus (WNV). This study aimed to evaluate the vector competence of from São Tomé and Príncipe (STP) for the transmission of the WNV PT6.39 strain, considering its potential role as a bridge vector in a region where would be the main vector.

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The present study focused on the use of milk as a novel excipient for the manufacture of pharmaceutical dosage forms specifically designed for the pediatric population. Dairy milks with different fat contents were studied to deliver paracetamol orally. The World Health Organization included milk in the list of GRAS (generally recognized as safe) substances, which together with its taste-masking ability and solubility solving properties, makes it a good candidate as an excipient in formulations containing paracetamol for pediatrics.

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Recent societal and technological developments have led to new sources of contamination, particularly from electronic waste (e-waste). The rapid increase in e-waste, combined with inadequate disposal and recycling practices has resulted in rising levels of hazardous substances in aquatic systems, including rare-earth elements (REEs). However, the effects of REEs on aquatic organisms remain poorly understood.

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Article Synopsis
  • - The study investigates how preoperative and postoperative audiometric results relate to different radiological staging classifications (Veillon classification and Symons-Fanning classification) in patients undergoing stapes surgery for otosclerosis from 2017 to 2022.
  • - A total of 87 patients were analyzed, revealing that the Symons-Fanning classification showed significant associations with various audiometric thresholds, particularly preoperative bone conduction and postoperative air conduction results, while the Veillon classification was linked predominantly to postoperative air conduction.
  • - The findings suggest that the Symons-Fanning classification is better at predicting both preoperative and postoperative bone conduction outcomes, whereas the Veillon classification excels in predicting postoperative air conduction results; both classifications similarly predicted the occurrence of postoperative air
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The manufacturing of tablets containing biologics exposes the biologics to thermal and shear stresses, which are likely to induce structural changes (e.g., aggregation and denaturation), leading to the loss of their activity.

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The crucial role of Rare Earth Elements (REEs) in the development of hi-tech in addition to their limited availability have urged countries to develop sustainable alternatives to their conventional primary sources (ore mining). Sorption technologies using magnetic materials such as spinel ferrite nanoparticles provide efficient removal of REEs from contaminated solutions and ease of separation through application of an external magnetic field. However, there is still limited knowledge available regarding the optimal operational conditions in which to use these materials, especially in complex aqueous mixtures with different REEs.

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Article Synopsis
  • The study examined how europium exposure, warming, and their combination affect the health of Mytilus galloprovincialis (a type of mussel) over 28 days, along with assessing the impact on sperm after 30 minutes of exposure.
  • Warming increased mussel metabolism and activated protective enzymes but caused cellular damage; europium exposure also led to similar damage, with the worst effects occurring from the combination of both stressors.
  • For sperm, warming reduced harmful reactive oxygen species but increased lipid damage, while europium exposure severely impaired sperm velocity and function, highlighting the critical need to explore the effects of rare earth elements alongside climate change factors.
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Article Synopsis
  • - Psoriasis is a chronic skin disease affecting 2-3% of people globally, with traditional treatments like methotrexate having limited effectiveness and potential side effects requiring ongoing monitoring.
  • - New biologic drugs provide better safety and efficacy but are costly and require injections, leading to increased interest in developing targeted oral therapies.
  • - Promising small molecules, such as phosphodiesterase 4 and TYK2 inhibitors, along with other oral agents targeting specific pathways, are being researched to combine the effectiveness of biologics with the ease of oral administration.
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