In this study, we describe the use of a STAT5 responsive element (LHRE) reporter gene to monitor the activity of the growth hormone (GH) transduction pathway following expression of heterologous fish GH and rat STAT5b in ...

The GH (growth hormone) cDNA sequence of the marine silverside fish Odontesthes argentinensis was obtainedusing the RACE protocol (Rapid Amplification of cDNA Ends). The marine silverside GH cDNA sequence is 928 nucleotides ...

O trabalho foi realizado na disciplina de Tópicos Avançados em Aprendizado e Memória, com 12 alunos de pós graduação dos Programas de Pós Graduação em Educação em Ciências: Química e Saúde da Vida e do Programa de Pós ...

Studies concerning the impact of nanomaterials, especially fullerene (C60), in fresh water environments and their effects on the physiology of aquatic organisms are still scarce and conflicting. We aimed to assess in vitro ...

Este trabalho teve como objetivo realizar estudo florístico e fitossociológico de macrófitas aquáticas em um banhado continental. Foram distribuídas, sistematicamente, 100 parcelas de 1 m² (intervalos de 1 m), em 10 ...

Herein we present a checklist of the bat species recorded in the municipality of Rio Grande, coastal plain of Rio Grande do Sul state. Thirteen species of three families were recorded through field sampling, collection ...

Hydrogen peroxide (H2O2) is a naturally occurring prooxidant molecule, and its effects in the macroinvertebrate infauna were previously observed. The existence of a gradient of antioxidant enzymes activity (catalase [CAT], ...

The objective analysis of scientific production is analysed by scientometric methods that measure the development and progress in science through the analysis of productivity and impact of the scientific production in ...

Microcystins produced by cyanobacteria are potent inhibitors of some protein phosphatases, but recent evidence also indicatests potential to generate oxidative stress. In the present study, the effects of microcystin raw ...

The objective of this study was to analyse biochemical responses induced by the carbon nanomaterial fullerene (C60) in the polychaete Perinereis gualpensis(Nereididae). The activity of glutathione-Stransferase (GST), ...

Some effects of cadmium exposure (100 mg/L for 4, 8, 12, and 24h) on the estuarine polychaete Laeonereisacuta (Nereididae) were evaluated. This polychaete was able to accumulate cadmium in the body, with the metal stored ...

The K562 cell line (chronic myeloid leukemia), sensitive to chemotherapy (non-MDR), and the Lucena cell line, resistant to chemotherapy (MDR) were investigated. The results suggest that both cell lines possess CD34 + CD38 ...

The photoprotector role of pigment dispersion in the melanophores of the crab, Chasmagnathus granulata, against DNA and oxidative damages caused by UV-A and UV-B was investigated.Intact and eyestalkless crabs were used. ...

Tyrosine accumulates in inborn errors of tyrosine catabolism, especially in tyrosinemia type II, where tyrosine levels are highly elevated in tissues and physiological fluids of affected patients. In tyrosinemia type II, ...

Microcystins are usually the predominant cyanotoxins present in both drinking and recreational waters after cyanobacterial blooms. Their classic toxic effect is hepatotoxicity through inhibition of serine/threonine ...

Nicotine is the main alkaloid of tobacco and possesses well-established stimulant effects. Previous reports show that nicotine at low doses improves memory functions, while high doses impair memory. This study aims to ...

Neohelice granulata were collected during a bloom dominated by Microcystis sp. in Patos Lagoon (RS, Brazil) and then sacrificed at different times of depuration in laboratory in order to verify microcystin (MC) content ...

Ao discutir os métodos e competências necessárias para cada profissional envolvido no processo de produção de material didático, o presente trabalho problematiza a produção de conteúdo instrucional para o curso de graduação ...

Several environmental pollutants, including metals, can induce oxidative stress. So, the objective of this study was to evaluate the effects of arsenic (AsIII, as As2O3) on the antioxidant responses in the polychaete ...

The aim of this study was to analyze the total antioxidant capacity (TOSC), generation of reactive oxygen species (ROS) and lipid peroxidation (LPO) in the different body regions of the estuarine polychaeta Laeonereis acuta ...