Browsing ICB - Artigos publicados em periódicos by Author "Monserrat, Laura Alicia Geracitano"

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  • Microcystin-induced oxidative stress in Laeonereis acuta (Polychaeta, Nereididae) 

    Leão, Janaina de Castro; Monserrat, Laura Alicia Geracitano; Amado, Lílian Lund; Monserrat, José María; Yunes, João Sarkis (2008)
    Oxidative stress induced by microcystins was evaluated in an estuarine worm, Laeonereis acuta (Nereididae).Ten organisms were exposed to lyophilized cells of a toxic Microcystis aeruginosa strain RST9501 ( 2 lg/mL ...

  • Oxidative stress in Laeonereis acuta (Polychaeta, Nereididae): environmental and seasonal effects 

    Monserrat, Laura Alicia Geracitano; Monserrat, José María; Bianchini, Adalto (2004)
    Laeonereis acuta was seasonally collected in an industrially polluted site (P) and in an unpolluted site (UP) at the Patos Lagoon estuary (southern Brazil). Glutathione S-transferase (GST), superoxide dismutase (SOD) and ...

  • Oxidative stress responses in two populations of Laeonereis acuta (Polychaeta, Nereididae) after acute and chronic exposure to copper 

    Monserrat, Laura Alicia Geracitano; Bocchetti, Rafaela; Monserrat, José María; Regoli, Francesco; Bianchini, Adalto (2004)
    Acute (4 days) and chronic (14 days) effects of copper were evaluated on the antioxidant defenses of Laeonereis acuta (Polychaeta) collected in unpolluted (UP) and polluted (P) sites. In the acute assay (125 and 250 lg ...

  • Photodynamic action of Benzo[a]pyrene in K562 Cells 

    Filgueira, Daza de Moraes Vaz Batista; Freitas, Diana Paula Salomão de; Votto, Ana Paula de Souza; Fillmann, Gilberto; Monserrat, José María; Monserrat, Laura Alicia Geracitano; Trindade, Gilma Santos (2007)
    Benzo[a]pyrene (BaP) is ubiquitously distributed in the environment, being considered the most phototoxic element among polycyclic aromatic hydrocarbon (PAHs). In presence of oxygen, PAHs can act as a photosensitizer by ...

  • Physiological and antioxidant enzyme responses to acute and chronic exposure of Laeonereis acuta (Polychaeta, Nereididae) to copper 

    Monserrat, Laura Alicia Geracitano; Monserrat, José María; Bianchini, Adalto (2002)
    Chronic (14 days) and acute (48 h) copper effects on the antioxidant defense system and some physiological variables of Laeonereis acuta (Polychaeta, Nereididae) were evaluated. In both assays, two nominal copper concentrations ...

  • Pollution biomarkers in estuarine animals: Critical review and new perspectives 

    Monserrat, José María; Martínez, Pablo Elías; Monserrat, Laura Alicia Geracitano; Amado, Lílian Lund; Martins, Camila De Martinez Gaspar; Pinho, Grasiela Lopes Leães; Chaves, Isabel Soares; Cravo, Marlize Ferreira; Lima, Juliane Ventura; Bianchini, Adalto (2007)
    In this review, recent developments in monitoring toxicological responses in estuarine animals are analyzed, considering the biomarker responses to different classes of pollutants. The estuarine environment imposes stressful ...

  • Sensitivity to microcystins: a comparative study in human cell lines with and without multidrug resistance phenotype 

    Votto, Ana Paula de Souza; Renon, Viviane Plasse; Yunes, João Sarkis; Rumjanek, Vivian Mary Barral Dodd; Capella, Marcia Alves Marques; Moura Neto, Vivaldo; Freitas, Marta Sampaio de; Monserrat, Laura Alicia Geracitano; Monserrat, José María; Trindade, Gilma Santos (2007)
    Multidrug resistance (MDR) is an obstacle in cancer treatment. An understanding of how tumoral cells react to oxidants can help us elucidate the cellular mechanism involved in resistance. Microcystins are cyanobacteria ...

  • The benefits and drawbacks of nicotine exposure in the cortex and hippocampus of old rats 

    Barros, Daniela Marti; Galhardi, Flora Gagliardi; Ferreira, Josencler Luis Ribas; Guterres, Leandra Borba; Dickel, Odila Eli; Monserrat, Laura Alicia Geracitano; Izquierdo, Ivan Antônio; Monserrat, José María (2007)
    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 ...

  • Toxicological responses in Laeonereis acuta (Annelida, Polychaeta) after arsenic exposure 

    Ventura-Lima, Juliane; Sandrini, Juliana Zomer; Cravo, Marlize Ferreira; Piedras, Fernanda Reinhardt; Moraes, Tarsila Barros; Fattorini, Daniele; Notti, Alessandra; Regoli, Francesco; Monserrat, Laura Alicia Geracitano; Marins, Luis Fernando Fernandes; Monserrat, José María (2007)
    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 ...