Invading species pose a growing threat to biodiversity, ecosystemic systems, regional economies, and public health. In recent decades, South America has received five exotic drosophilids species, some of which have invaded natural ecosystems and caused harm to agriculture. The most recent case is the Asian fly Drosophila nasuta Lamb.
View Article and Find Full Text PDFPurpose: To compare the performance in phonological processing skills, reading speed and reading comprehension before and after phonological remediation in a restricted group of schoolchildren with Attention Deficit Hyperactivity Disorder (ADHD) and with dyslexia.
Methods: Thirty-two schoolchildren from the 2nd to 8th year of Elementary School of both genders, with diagnosis of ADHD and Dyslexia according to the DSM-5, participated in this study. All patients underwent Phonological Remediation Program consisted of 18 weekly sessions.
The aim of this study was to develop a scale to investigate the ways of coping with interpersonal situations considered difficult in the Brazilian university context. The items were based on the results of a study previously obtained in a focus group with university students. The first steps of the study were the analysis of judges and the investigation of the semantic validity.
View Article and Find Full Text PDFThe analysis of volatile organic compounds (VOCs) emanating from biological samples appears as one of the most promising approaches in metabolomics for the study of diseases, namely cancer. In fact, it offers advantages, such as non-invasiveness and robustness for high-throughput applications. The purpose of this work was to study the urinary volatile metabolic profile of patients with renal cell carcinoma (RCC) (n = 30) and controls (n = 37) with the aim of identifying a potential specific urinary volatile pattern as a non-invasive strategy to detect RCC.
View Article and Find Full Text PDFRCC usually develops and progresses asymptomatically and, when detected, it is frequently at advanced stages and metastatic, entailing a dismal prognosis. Therefore, there is an obvious demand for new strategies enabling an earlier diagnosis. The importance of metabolic rearrangements for carcinogenesis unlocked a new approach for cancer research, catalyzing the increased use of metabolomics.
View Article and Find Full Text PDFMetabolomics, an emerging field of "omics" sciences, has caught wide scientific attention in the area of biomarker research for cancers in which early diagnostic biomarkers have the potential to greatly improve patient outcome, such as renal cell carcinoma (RCC). Metabolomic approaches have been successfully applied to various human RCC model systems, mostly ex vivo neoplastic renal tissues and biofluids (urine and serum) from patients with RCC. Importantly, in contrast to other cancers, only a few studies have addressed the RCC metabolome using cancer cell culture-based in vitro models.
View Article and Find Full Text PDFThis paper reviews the use of NMR metabolomics for the metabolic characterization of renal cancer. The existing challenges in the clinical management of this disease are first presented, followed by a brief introduction to the metabolomics approach, in the context of cancer research. A subsequent review of the literature on NMR metabolic studies of renal cancer reveals that the subject has been clearly underdeveloped, compared with other types of cancer, particularly regarding cultured cells and tissue analysis.
View Article and Find Full Text PDFHearing deficiencies are a prevalent disease and justify the need for regulation of the Laws and their execution through Hearing Health Care Ordinances. In line with public policies, maternity hospitals that were part of the network began to implement the Newborn Hearing Screening (NHS) service, as had occurred in the city of Rio de Janeiro. The otoacoustic emissions test is used for NHS as it is a rapid and highly reliable method that is easy to perform and gives objective results.
View Article and Find Full Text PDFParaquat (PQ) is an extremely toxic herbicide upon oral ingestion that lacks a specific antidote. In case of intoxication, treatment primarily relies on limiting its intestinal absorption. In this study, we elucidate the intestinal transport mechanisms of PQ uptake using Caco-2 cells as a model of the human intestinal epithelium.
View Article and Find Full Text PDFA new and simple analytical approach consisting of headspace-solid phase microextraction (HS-SPME) sampling coupled with gas chromatography-ion trap/mass spectrometry (GC-IT/MS) was developed to study the volatile human urinary metabolome. A central composite design (CCD) was used in the optimisation of extraction conditions. Fibre selection and evaluation of pH influence were performed using an univariate mode and the influence of other parameters, such as the time and temperature of extraction, time of incubation and salt addition, that affect the efficiency of the SPME sampling, was carried out using a CCD.
View Article and Find Full Text PDFN-benzylpiperazine (BZP) has become popular among recreational drug users as the major active ingredient of "party pills" due to its stimulant and euphoric properties. Before BZP legal restrictions, these pills were sold as a safe and legal alternative to classical amphetamines like ecstasy. New Zealand, given the size of its legal market prior to BZP control, is the country that most contributed to the knowledge about the patterns of use, motivations and positive and adverse effects resulting from its consumption, though the interest in BZP-party pills was observed all over the world.
View Article and Find Full Text PDFHist Cienc Saude Manguinhos
December 2011
The article explores the emergence of an architectural heritage in the realm of healthcare assistance for workers in the sugarcane agroindustry in Brazil following enactment of the law known as the Estatuto da Lavoura Canavieira (1941), under the auspices of the Instituto do Açúcar e do Álcool and as part of Estado Novo policies (1937-1945). The institute proposed solutions based on surveys conducted at sugarcane mills in cane-producing states and on the medical and hospital system adopted by the institute's enlightened bureaucracy in the 1940s, which took the U.S.
View Article and Find Full Text PDFIn this study, the in vitro activity of tigecycline against 1140 enterococci collected from humans, food products, animals and the environment in Portugal (1996-2008) was analysed. Ten isolates (seven Enterococcus faecalis and three Enterococcus spp.) non-susceptible to tigecycline (minimum inhibitory concentrations of 0.
View Article and Find Full Text PDFBackground: central auditory processing and exposure to metallic mercury.
Aim: to evaluate the performance on tests of central auditory processing in adolescents exposed to metallic mercury.
Method: participants were 52 adolescents, of both genders, who presented hearing thresholds within normal limits.
Rheedia longifolia Planch et Triana belongs to the Clusiaceae family. This plant is widely distributed in Brazil, but its chemical and pharmacological properties have not yet been studied. We report here that leaves aqueous extract of R.
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