Publications by authors named "Felipe da Silva"

Article Synopsis
  • Infections from the dengue virus, Orthoflavivirus denguei, can show no symptoms or a range of clinical signs due to its complex interactions with viral and host factors.
  • The study examined specific genetic variations (SNPs) in the interleukin-10 (IL-10) gene among 333 individuals in northeastern Brazil to see how they relate to symptomatic dengue.
  • Findings revealed that certain genotypes and the G allele of the -1082 A/G SNP are associated with a higher risk of developing symptomatic dengue, particularly in contrast to those with asymptomatic infections.
View Article and Find Full Text PDF
Article Synopsis
  • - Prostate cancer (PCa) risk is significantly influenced by genetic factors, and numerous Genome-Wide Association Studies (GWAS) have aimed to understand these genetic associations; however, many of these studies produce false-positive results.
  • - Researchers applied Bayesian statistical methods to GWAS data to improve the accuracy of genetic associations with PCa, focusing on significant genetic polymorphisms and their correlations with the disease.
  • - Their analysis included 13 GWAS studies, identifying multiple gene variations as potential biomarkers for PCa risk, particularly noting variations in the 8q24 locus and specific genes like MSMB, ITGA6, and KLK3.
View Article and Find Full Text PDF

In soybean breeding programs, a great deal of time is devoted to the use of methods that perform selection of individual plants during the initial generations. Our hypothesis is that BLUPIS (simulated individual BLUP) can be efficient when applied in the initial stages of soybean breeding programs. This study aimed to explore the potential of BLUPIS in the early generations of a soybean breeding program, as well as to assess the viability of the strategy of dividing the useful area of experimental plots for estimating genotypic effects and plant selection.

View Article and Find Full Text PDF

The Amazon region is known for its continental dimension, water abundance, and especially for the rich biodiversity that this biome hosts. Among the thousands of plant species in the Amazon, many represent food sources. Among these, cupuaçu (Theobroma grandiflorum (Willd.

View Article and Find Full Text PDF

Acanthamoeba genus can affect humans with diseases such as granulomatous amebic encephalitis (GAE), a highly lethal neuroinfection. Several aspects of the disease still need to be elucidated. Animal models of GAE have advanced our knowledge of the disease.

View Article and Find Full Text PDF

This study examines the relationship between institutional trust from an individual and societal perspective and perceived corruption and climate attitudes of individuals in Latin America. To this end, multilevel modeling was used to test whether the attitudes of individuals from 285 regions of Latin America are influenced by these constructs. Based on the results, it was found that in contrast to studies in developed countries, where institutional trust is positively associated with pro-climate attitudes, in Latin America institutional trust acts as an inhibiting factor and is inversely related to climate attitudes.

View Article and Find Full Text PDF

Herein, we present a comprehensive total synthesis of cannabidiol integrating both batch and continuous flow conditions. Our approach is planned to streamline the synthesis of olivetolic acid derivatives and utilize an enantiomerically pure monoterpene moiety obtained from naturally occurring (R)-(+)-limonene by photocatalysis. Key reactions, including the synthesis of olivetolic ester and a Friedel-Crafts alkylation, are successfully adapted to continuous flow, resulting in improved yields and selectivities.

View Article and Find Full Text PDF

Objectives: This study aims to evaluate the effects of Croton grewioides essential oil (CGEO) and anethole on follicle survival, growth, and oxidative stress in cultured bovine ovarian tissues.

Methods: Ovarian tissues were cultured for 6 days in a medium supplemented with different concentrations (1, 10, 100, or 1000 µg mL-1) of CGEO or anethole and then, follicular survival and growth, collagen content, and stromal cell density in ovarian tissues cultured in vitro were evaluated by histology. The mRNA levels of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase 1 (GPX1), peroxirredoxin 6 (PRDX6), and nuclear factor erythroid 2-related factor 2 (NRF2) were evaluated by real-time PCR.

View Article and Find Full Text PDF

is a diazotrophic endophytic bacterium that promotes the growth and development of several plant species. However, the molecular mechanisms activated during plant response to this bacterium remain unclear. Here, we used the RNA-seq approach to understand better the effect of PAL5 on the transcriptome of shoot and root tissues of .

View Article and Find Full Text PDF

Nanocapsules provide selective delivery and increase the bioavailability of bioactive compounds. In this study, we examined the anticancer and immunomodulatory potential of (crajiru) extract encapsulated in nanocapsules targeting myeloid leukemias. Nanocapsules containing crajiru (nanocapsules-CRJ) were prepared via interfacial polymer deposition and solvent displacement.

View Article and Find Full Text PDF

Objective: We aim to investigate whether: 1) social skills (SS) are impaired in obsessive-compulsive disorder (OCD); 2) SS would change over the course of treatment; and 3) severity of OCD, age of onset of OCD symptoms and illness duration would be associated with SS impairments.

Methods: 41 treatment-naive patients with OCD and 34 control participants (CP) were assessed using a SS inventory. Patients were reevaluated 12-weeks after standardized treatment.

View Article and Find Full Text PDF
Article Synopsis
  • Understanding plant metabolites across the plant kingdom is challenging due to their vast diversity.
  • Researchers created the plantMASST reference database with data from 19,075 plant extracts, covering 246 botanical families, 1,469 genera, and 2,793 species.
  • This database enhances research on plant molecules, supporting drug discovery, biosynthesis, taxonomy, and ecology related to herbivore interactions.*
View Article and Find Full Text PDF

Cryptococcus neoformans is primarily responsible for cases of cryptococcal meningitis in individuals with HIV/AIDS. This study evaluated the susceptibility of C. neoformans obtained from individuals with cryptococcal meningitis associated with HIV/AIDS in Manaus, Amazonas, Brazil, against the action of the antifungals amphotericin B, flucytosine, fluconazole, itraconazole and posaconazole and analyzed it using Multilocus Sequence Typing (MLST) in order to identify the Sequence Types (STs).

View Article and Find Full Text PDF

We investigated the larvicidal activity of the essential oil (EO) from Tetradenia riparia and its majority compound fenchone for controlling Culex quinquefasciatus larvae, focusing on reactive oxygen and nitrogen species (RONS), catalase (CAT), glutathione S-transferase (GST), acetylcholinesterase (AChE) activities, and total thiol content as oxidative stress indicators. Moreover, the lethal effect of EO and fenchone was evaluated against Anisops bouvieri, Diplonychus indicus, Danio rerio, and Paracheirodon axelrodi. The EO and fenchone (5 to 25 µg/mL) showed larvicidal activity (LC from 16.

View Article and Find Full Text PDF

Two unusual naphthoquinones, named here as pleonotoquinones A () and B (), were isolated along with two known anthraquinones ( and ) via chromatographic separations of an ethyl acetate extract of the roots of . Compounds and are the first examples of quinones bearing a 2-methyloxepine moiety. The compounds were isolated with the aid of mass spectrometry and molecular networking, and their structures were resolved using 1D and 2D NMR and HRESIMS data.

View Article and Find Full Text PDF

Camera traps became the main observational method of a myriad of species over large areas. Data sets from camera traps can be used to describe the patterns and monitor the occupancy, abundance, and richness of wildlife, essential information for conservation in times of rapid climate and land-cover changes. Habitat loss and poaching are responsible for historical population losses of mammals in the Atlantic Forest biodiversity hotspot, especially for medium to large-sized species.

View Article and Find Full Text PDF

The study aimed to evaluate the antitumor and toxicogenetic effects of liposomal nanoformulations containing citrinin in animal breast carcinoma induced by 7,12-dimethylbenzanthracene (DMBA). virgin females were divided into six groups treated with (1) olive oil (10 mL/kg); (2) 7,12-DMBA (6 mg/kg); (3) citrinin, CIT (2 mg/kg), (4) cyclophosphamide, CPA (25 mg/kg), (5) liposomal citrinin, LP-CIT (2 μg/kg), and (6) LP-CIT (6 µg/kg). Metabolic, behavioral, hematological, biochemical, histopathological, and toxicogenetic tests were performed.

View Article and Find Full Text PDF

The genus (mainly Martius, Martius, and Martius) has recently gained commercial and scientific notoriety due to the high nutritional value of its fruits, which are rich in polyphenols (phenolic acids and anthocyanins) and have potent antioxidant activity. These characteristics have contributed to the increased number of neuropharmacological evaluations of the three species over the last 10 years, especially açaí of the species Martius. The fruits of the three species exert neuroprotective effects through the modulation of inflammatory and oxidative pathways and other mechanisms, including the inhibition of the mTOR pathway and protection of the blood-brain barrier, all of them intimately involved in several neuropathologies.

View Article and Find Full Text PDF

This study assessed the extent of cigarette butt contamination on two urban beaches in Recife-PE (Pernambuco State, Brazil) with varying levels of use. The study considered degradation levels and evaluated whether the brands varied by time, space, and beaches use. Ten transects (1.

View Article and Find Full Text PDF

Background: It is not yet known whether the years after peak height velocity (PHV) are associated with the physiological mechanisms of muscle strength and power in Juniors rowers.

Objective: To identify the association between years post PHV (YPPHV) with muscle power and strength in Juniors rowers.

Methods: We tested 235 Brazilian rowing athletes (male: 171, female: 64, Juniors category).

View Article and Find Full Text PDF

Citrinin (CIT) is a polyketide-derived mycotoxin, which is produced by many fungal strains belonging to the gerena Monascus, Aspergillus, and Penicillium. It has been postulated that mycotoxins have several toxic mechanisms and are potentially used as antineoplastic agents. Therefore, the present study carried out a systematic review, including articles from 1978 to 2022, by collecting evidence in experimental studies of CIT antiplorifactive activity in cancer.

View Article and Find Full Text PDF

Purpose/objectives: Systemic sclerosis (SSc) is a rare chronic autoimmune disease characterized by vascular abnormalities and connective tissue disorders. In 2021, the multidisciplinary team of the university hospital recognized a demand for oral health information among SSc patients. This study aims to describe the development of an SSc oral health booklet and its validation by people with SSc.

View Article and Find Full Text PDF

The plant vascular system is a key element for long-distance communication. Understanding its composition may provide valuable information on how plants grow and develop themselves. In this study, a quantitative proteome dataset of the vascular sap proteome of three commercially important Eucalyptus species was shown.

View Article and Find Full Text PDF

(Annonaceae) is a plant with limited phytochemical and pharmacological evidence. Thus, using LC-MS/MS, we performed exploratory analyses of the fruit extract of , resulting in the tentative identification of alkaloids () and diterpenes (). Through the application of chromatography techniques with the extract of two kaurane diterpenes were isolated, xylopinic acid () and -15-oxo-kaur-16-en-19-oic acid ().

View Article and Find Full Text PDF