In November 2015, the Fundão Dam break released millions of tons of metal-rich tailings into the Doce River Basin (DRB), causing catastrophic damage and potential ecological effects that reached the Atlantic Ocean. This study aimed to evaluate the geochemistry and toxicity of water and sediments collected in the DRB from 2015 to 2019 and to determine the spatial and temporal trends. Water and sediment samples were analyzed for metals and As by inductively coupled plasma optical emission spectrometry (ICP-OES), and acute toxicity for Daphnia similis or D.
View Article and Find Full Text PDFAim: Understanding the variation in community composition and species abundances (i.e., β-diversity) is at the heart of community ecology.
View Article and Find Full Text PDFThe South Brazilian grasslands (Campos Sulinos) form the dominant vegetation in southern Brazil. They are species-rich ecosystems that occur under distinct geomorphological and climatic conditions but spatial variation of plant species diversity remains understudied. Here, we present a detailed description of plant communities across the region.
View Article and Find Full Text PDFObjective: To describe the production and validation of short film type educational technology for the prevention of diabetic foot ulcers.
Methods: A methodological study focused on the validation of a short film. The construction of the film was carried out in three stages: pre-production, production, and post-production.
Objective: To describe the prevalence and factors associated with pressure injuries related to the use of personal protective equipment during the COVID-19 pandemic.
Methods: Cross-sectional study conducted using an instrument made available in social networks with 1,106 health professionals. The data were analyzed using descriptive statistics and compared, considering pvalue < 0.
Background And Aims: Cardiovascular diseases are the main cause of mortality in obesity. Despite advanced understanding, the mechanisms that regulate cardiac progenitor cells (CPC) survival in pathological conditions are not clear. Low IGF-1 plasma levels are correlated to obesity, cardiomyopathy and CPC death, so this work aimed to investigate IGF-1 therapeutic potential on cardiomyopathy and its relationship with the survival, proliferation and differentiation of CPC in Western diet-induced obesity.
View Article and Find Full Text PDFObjective: To compare the analgesic effects of stimulation of the anterior cingulate cortex (ACC) or the posterior superior insula (PSI) against sham deep (d) repetitive (r) transcranial magnetic stimulation (TMS) in patients with central neuropathic pain (CNP) after stroke or spinal cord injury in a randomized, double-blinded, sham-controlled, 3-arm parallel study.
Methods: Participants were randomly allocated into the active PSI-rTMS, ACC-rTMS, sham-PSI-rTMS, or sham-ACC-rTMS arms. Stimulations were performed for 12 weeks, and a comprehensive clinical and pain assessment, psychophysics, and cortical excitability measurements were performed at baseline and during treatment.
Objective:: to describe the process of developing of an educational booklet on insulin therapy for children with diabetes mellitus type 1.
Method:: methodological approach, in which the following steps were carried out: selecting of the content and type of technology to be developed (for this step, an integrative review, an analysis of the comments of blogs about Diabetes Mellitus type 1 and interviews with the children were performed), creation of images, formatting and layout composition.
Results:: the work resulted in the production of the final version of the educational booklet, which was titled Aplicando a insulina: a aventura de Beto [Applying insulin: Beto's adventure].
An Acad Bras Cienc
April 2016
The natural vegetation of Southern Brazil's coastal region includes grasslands formations that are poorly considered in conservation policy, due to the lack of knowledge about these systems. This study reports results from a regional-scale survey of coastal grasslands vegetation along a 536 km gradient on southern Brazil. We sampled 16 sites along the coastal plain with 15 plots (1 m²) per site.
View Article and Find Full Text PDFUnlabelled: Topical treatments have gained popularity for general use as an adjunct to systemic drugs in neuropathic pain, but their use produces variable clinical results and local adverse events.
Objective: To evaluate the safety and analgesic effect of a formulation of liposomal capsaicin (LC) (0.025%) in patients with post herpetic neuralgia (PHN).
Objective: To investigate the acute effects of intravenous administration of cigarette smoke extract (CSE) on histological, inflammatory, and respiratory function parameters in rats, as well as to compare this potential acute lung injury (ALI) model with that with the use of oleic acid (OA).
Methods: We studied 72 Wistar rats, divided into four groups: control (those injected intravenously with saline); CSE (those injected intravenously with CSE and saline); OA (those injected intravenously with saline and OA); and CSE/OA (those injected intravenously with CSE and OA).
Results: Mean lung compliance was significantly lower in the OA and CSE/OA groups (2.
Rev Salud Publica (Bogota)
December 2013
Objective: Identifying and comparinge the physical qualities of Brazilian athletes and practitioners of rhythmic gymnastics.
Methods: 125 Brazilian athletes and rhythmic gymnasts practitioners of Rhythmic Gymnastics fromaged 7 to 25 years- old were evaluated. They were divided into the following categories: Different competitive levels (international, national and regional) and pre- and post- menarche practitioners.
Myopathy is a well-known side effect of corticosteroid therapy. Creatine monohydrate (Cr) supplementation has been shown to increase fat-free mass and muscular function. This study aimed to investigate if Cr administration could offset the deleterious functional effects of high doses of steroids.
View Article and Find Full Text PDFObjectives: The efficacy of BCG vaccination in preterm babies is unknown, and available data on conversion rates to tuberculin in this age group are scarce and controversial. This study assessed the tuberculin response in preterm infants after BCG vaccination.
Methods: This randomized cohort study was carried out at the Neonatal Department, University Hospital, Federal University of Minas Gerais in Brazil during 2001 and 2002.