Publications by authors named "Leandro Freitas"

Horseshoe kidney is a rare congenital anomaly with an unusually higher frequency of neuroendocrine tumors. Symptoms are rare, and, in most of the cases, are incidentally diagnosed. The clinical behavior of these tumors is heterogeneous and can be difficult to predict based on histology alone.

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  • The study highlights how socioeconomic factors, such as wealth concentration and social inequality, influence ecosystem services (ES), particularly crop pollination in Brazil over a decade from 2006 to 2017.
  • It found that as small, diverse farms were replaced by large monocultures, the demand for pollination services increased by 3.3%, but both the diversity and provision of these services dropped significantly—by 16.1% and 22.5%, respectively.
  • The research indicates that regions with concentrated land ownership and fewer financial resources face reduced pollination services, emphasizing the need for a multidimensional approach to understand these complex socio-ecological interactions.
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spp. commonly infects phagocytic cells of the immune system, particularly macrophages, employing various immune evasion strategies that enable their survival by altering the intracellular environment. In mammals, these parasites establish persistent infections by modulating gene expression in macrophages, thus interfering with immune signaling and response pathways, ultimately creating a favorable environment for the parasite's survival and reproduction.

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  • * Urban areas displayed increased generalization in species interactions, demonstrating greater overlap and a link between lower rainfall and more generalized interaction networks.
  • * Urban environments also showed reduced functional trait diversity among hummingbirds and a higher presence of nonnative nectar plants, affecting both species composition and the interactions within these ecological communities.
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Background And Aims: Ambophily, an intriguing pollination system in which plant species present adaptations to both biotic and abiotic pollination, has been scarcely reported. Most studies have been conducted with a single or few related species from wind-pollinated genera. We here assess for the first time the frequency of ambophily at the community-level.

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  • Mantle cell lymphoma (MCL) is a rare and aggressive type of cancer that affects B-cells in the immune system.
  • MCL can happen in different parts of the body, but finding it in the mouth is very uncommon.
  • This report describes a unique case of MCL found in the palate of a 56-year-old man, focusing on its special features that help doctors correctly identify it.
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Background: Transcatheter aortic valve implantation (TAVI) is a well-established treatment for symptomatic patients with aortic stenosis. Yet, the impact of sex differences and public vs. private procedural setting on TAVI outcomes remain uncertain.

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Introduction: Circulating tumor DNA (ctDNA) can be obtained from cell-free DNA (cfDNA) andis a new technique for genotyping, response assessment and prognosis in lymphoma.

Methods: Eighteen patients with samples at diagnosis (ctDNA1), after treatment (ctDNA2) and extracted from diagnostic tissue (FFPE) were evaluated.

Results: In all patients, at least one mutation in cfDNA was detected at diagnosis.

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  • Plant growth-promoting bacteria (PGPB) can enhance crop yield and nutrition, with this study focusing on their effects on dwarf castor beans following legumes and grasses in Brazil.
  • The research tested various nitrogen (N) application rates alongside PGPB inoculation, finding significant increases in grain and oil yields at specific N rates, especially with inoculation treatments.
  • The findings suggest that combining optimal N rates with PGPB inoculation can lead to higher castor bean yields while reducing fertilizer use, promoting more sustainable agricultural practices.
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Background: Robust data on the learning curve (LC) of transcatheter aortic valve replacement (TAVR) are lacking in developing countries.

Objective: To assess TAVR's LC in Brazil over time.

Methods: We analyzed data from the Brazilian TAVR registry from 2008 to 2023.

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Background And Aims: The majority of the earth's land area is currently occupied by humans. Measuring how terrestrial plants reproduce in these pervasive environments is essential for understanding their long-term viability and their ability to adapt to changing environments.

Methods: We conducted hierarchical and phylogenetically-independent meta-analyses to assess the overall effects of anthropogenic land-use changes on pollination, and male and female fitness in terrestrial plants.

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Root-knot nematodes (RKN) are one of the most harmful soil-borne plant pathogens in the world. Actinobacteria are known phytopathogen control agents. The aim of this study was to select soil actinobacteria with control potential against the RKN (Meloidogyne javanica) in tomato plants and to determine mechanisms of action.

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This study assessed the safety and efficacy of OncoTherad (MRB-CFI-1) nanoimmunotherapy for non-muscle invasive bladder cancer (NMIBC) patients unresponsive to (BCG) and explored its mechanisms of action in a bladder cancer microenvironment. A single-arm phase I/II study was conducted with 44 patients with NMIBC who were unresponsive to BCG treatment. Primary outcomes were pathological complete response (pCR) and relapse-free survival (RFS).

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The adoption of diversified agricultural systems that employ integrated cultural practices appears to be the way to sustainably intensify tropical agriculture. Our objectives were to evaluate the dry matter (DM) accumulation of sorghum inoculated with , with or without a nitrogen fertilization split, intercropped with palisade grass ( cv. BRS Paiaguás), and how these practices influenced the nutrition and development of soybean in succession.

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Globally, human activities impose threats to nature and the provision of ecosystem services, such as pollination. In this context, ecological restoration provides opportunities to create managed landscapes that maximize biodiversity conservation and sustainable agriculture, e.g.

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Atmospheric data are collected by researchers every day. Campaigns such as GOAmazon 2014/2015 and the Amazon Tall Tower Observatory collect essential data on aerosols, gases, cloud properties, and meteorological parameters in the Brazilian Amazon basin. These data products provide insights and essential information for analyzing and predicting natural processes.

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  • Gastrointestinal amyloidosis is a disease that can be either primary (related to a type of blood cell problem) or secondary (from long-term illnesses or conditions like inflammatory bowel disease).
  • Sometimes, it can cause serious liver failure, which makes it harder to diagnose and treat.
  • Doctors look for specific signs in scans of the abdomen to help identify the disease and understand what’s going on.
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  • The study examines the roles of cell adhesion molecules (CAMs) like ICAM-1, LFA-1, and L-selectin in thyroid cancer, investigating their potential as clinical diagnostic and prognostic markers.
  • Researchers analyzed gene and protein expression in 275 patients (173 with malignant tumors and 102 with benign nodules) using RT-qPCR and immunohistochemistry.
  • Key findings show that mRNA and protein levels of certain CAMs differ significantly between benign and malignant nodules, suggesting they could help identify malignancy, but no clear link to patient outcomes was established.
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Castleman's disease (CD) is a rare and heterogeneous lymphoproliferative disorder, with limited available clinical information in Brazil. A retrospective study was carried out through information contained in the medical records of 51 patients, between July 1999 and June 2020. Seven patients were excluded, and 44 were analyzed in total.

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Pochonia chlamydosporia is a soil-dwelling fungus and biological control agent of nematodes, active ingredient in commercial bionematicides. The fungus is also endophytically associated with the roots of several plant species, promoting their growth and inducing systemic resistance. In this study, different pathways and tomato defense metabolites were studied to identify mechanisms induced by P.

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Gastrointestinal (GI) cancers are a set of diverse diseases affecting many parts/ organs. The five most frequent GI cancer types are esophageal, gastric cancer (GC), liver cancer, pancreatic cancer, and colorectal cancer (CRC); together, they give rise to 5 million new cases and cause the death of 3.5 million people annually.

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The division of labour hypothesis between stamens has explained the evolution of divergent functions between dimorphic stamens in the same flower. However, little is known about whether the distinct type of stamens differs in attractiveness to pollinators. Therefore, we investigate whether the two types of stamens commonly found in have different visual and olfactory attractants.

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The Internet of Things (IoT) is based on objects or "things" that have the ability to communicate and transfer data. Due to the large number of connected objects and devices, there has been a rapid growth in the amount of data that are transferred over the Internet. To support this increase, the heterogeneity of devices and their geographical distributions, there is a need for IoT gateways that can cope with this demand.

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