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901.
R. Andrades H. T. Pinheiro R. G. Santos A. S. Martins P. A. S. Costa 《Journal of fish biology》2012,81(6):2092-2094
In May 2011, a Rhincodon typus was sighted on the continental shelf of the central Brazilian coast, in the vicinity of a gas platform. During the video record, an interspecific following association was observed between a Caranx crysos school and the R. typus. 相似文献
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Arunava Pradhan José Paulo Pinheiro Sahadevan Seena Cláudia Pascoal Fernanda Cássio 《Applied and environmental microbiology》2014,80(18):5874-5881
The water-soluble polyhydroxyfullerene (PHF) is a functionalized carbon nanomaterial with several industrial and commercial applications. There have been controversial reports on the toxicity and/or antioxidant properties of fullerenes and their derivatives. Conversely, metals have been recognized as toxic mainly due to their ability to induce oxidative stress in living organisms. We investigated the interactive effects of PHF and cadmium ions (Cd) on the model yeast Saccharomyces cerevisiae by exposing cells to Cd (≤5 mg liter−1) in the absence or presence of PHF (≤500 mg liter−1) at different pHs (5.8 to 6.8). In the absence of Cd, PHF stimulated yeast growth up to 10.4%. Cd inhibited growth up to 79.7%, induced intracellular accumulation of reactive oxygen species (ROS), and promoted plasma membrane disruption in a dose- and pH-dependent manner. The negative effects of Cd on growth were attenuated by the presence of PHF, and maximum growth recovery (53.8%) was obtained at the highest PHF concentration and pH. The coexposure to Cd and PHF decreased ROS accumulation up to 36.7% and membrane disruption up to 30.7% in a dose- and pH-dependent manner. Two mechanisms helped to explain the role of PHF in alleviating Cd toxicity to yeasts: PHF decreased Cd-induced oxidative stress and bound significant amounts of Cd in the extracellular medium, reducing its bioavailability to the cells. 相似文献
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J. M. Santos P. J. Branco A. T. Silva C. Katopodis A. N. Pinheiro T. Viseu M. T. Ferreira 《Zeitschrift fur angewandte Ichthyologie》2013,29(2):425-430
Literature related to pool‐type fishways has seen a recent upsurge of interest in the placement of instream structures for improving fish passage. However, there is still no information on how different flow regimes created by boulder placement have an influence on upstream fish movements. The main goal of this study was to assess the performance of two different flow regimes, characterized by the relative depth of flow (d/h), where d is the water depth and h is the height of artificial bottom substrata, in assisting fish passage in an experimental full‐scale pool‐type fishway. Two series of experiments consisting of 20 replicates each and representing distinct flow regimes created by boulder placement in the flume bottom – d/h > 4 (regime 1) and 1.3 < d/h < 4 (regime 2) – were carried out to analyse the proportion and timing of successful upstream movements of a potamodromous cyprinid, the Iberian barbel (Luciobarbus bocagei). Although no significant differences (P > 0.05) in passage success were observed between regimes (55% and 60%, respectively), fish transit time was significantly lower (P < 0.05) in regime 2 (mean ± SD: 2.6 ± 1.6 min.) than in regime 1 (7.1 ± 5.8 min.). The results of these experiments show that lower relative depths can be more beneficial to fish passage because they reduce the transit time for successful negotiation, thus providing a useful indication on how to improve fish passage through pool‐type fishways. 相似文献
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Jeandre Augusto dos Santos Jaques Lara Vargas Becker Viviane do Carmo Gonçalves Souza Cláudio Alberto Martins Leal Tatiana Montagner Dalcin Bertoldo Kelly de Vargas Pinheiro Vera Maria Morsch Maria Rosa Chitolina Schetinger Daniela Bitencourt Rosa Leal 《Cell biochemistry and function》2013,31(5):395-399
The purpose of this study was to investigate the activities of ecto‐nucleoside triphosphate diphosphohydrolase (E‐NTPDase; EC 3.6.1.5; CD39) and adenosine deaminase (E‐ADA; EC 3.5.4.4) in lymphocytes from patients with rheumatoid arthritis (RA). Thirty patients diagnosed with RA through American College of Rheumatology criteria as well as 30 healthy patients were selected. Peripheral blood lymphocytes were isolated, and E‐NTPDase and E‐ADA activities were assayed. The results demonstrated an increased E‐NTPDase activity (both ATP and ADP as substrates) and a decreased E‐ADA activity in RA patients. These data suggest an organic effort to preserve the adenosine level, which is known to have anti‐inflammatory and analgesic properties, working as a potent suppressor of immune response. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
908.
V. Camilato T. Simon H. T. Pinheiro C. R. Pimentel J.‐C. Joyeux 《Zeitschrift fur angewandte Ichthyologie》2010,26(3):463-464
The present work provides length‐weight relationships for eight species of cryptobenthic reef fishes captured at natural and artificial environments on the southeastern Brazilian coast. 相似文献
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de Lima-Neto Reginaldo Gonçalves Inácio Cícero Pinheiro Costa Ronyllton Brito de Aguiar Cordeiro Rossana Neves Wendell Wons Neves Rejane Pereira Magalhães Oliane Maria Correia Filho Armando Marsden Lacerda de Araújo Paulo Sergio Ramos 《Mycopathologia》2021,186(3):475-475
Mycopathologia - A correction to this paper has been published: https://doi.org/10.1007/s11046-021-00559-9 相似文献
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