45 documents found, page 1 of 5
Ecotoxicity of the non-dioxin-like PCB-153 in the model marine diatom Phaeodact...
Duarte, Bernardo; Cardoso, João; Feijão, Eduardo; Carreiras, João Albuquerque; Cruz De Carvalho, Ricardo; Matos, Ana Rita; Fonseca, Vanessa F.Despite the ban on polychlorinated biphenyls (PCBs) in developed countries since the 1930s, their persistence and use endured in developing countries, with reported toxic effects on various organisms. PCB congener 153 (PCB-153, 2, 2′, 4, 4′, 5, 5′–hexachlorobiphenyl) is notably prevalent in marine biota. However, its mode of action and impact on primary marine diatoms are not well documented. Phaeodactylum tric...
Marine microbial community taxonomic and functional indicators to volcanic and ...
Duarte, Bernardo; Cruz-Silva, Ana; Feijão, Eduardo; Pereira, Marcelo; Nunes, Mónica; Figueiredo, Andreia; Matos, Ana Rita; Dias, RicardoIn recent years, the growth in Antarctic tourism has stimulated research on the anthropogenic impacts on the region, boosted by advances in OMIC technologies applied to polar microbial communities. This study aimed to assess the human impacts on marine prokaryotic and viral communities of Deception Island by identifying potential taxonomic, functional, and resistome indicators of both anthropogenic and natural/...
Marine microbial community taxonomic and functional indicators to volcanic and ...
Duarte, Bernardo; Cruz-Silva, Ana; Feijão, Eduardo; Pereira, Marcelo; Nunes, Mónica; Figueiredo, Andreia; Matos, Ana Rita; Dias, RicardoIn recent years, the growth in Antarctic tourism has stimulated research on the anthropogenic impacts on the region, boosted by advances in OMIC technologies applied to polar microbial communities. This study aimed to assess the human impacts on marine prokaryotic and viral communities of Deception Island by identifying potential taxonomic, functional, and resistome indicators of both anthropogenic and natural/...
The use of chitosan oligosaccharide to improve artemisinin yield in well-watere...
García-García, Ana L.; Matos, Ana Rita; Feijão, Eduardo; Carvalho, Ricardo Cruz de; Boto, Alicia; Silva, Jorge Marques da; Jiménez-Arias, DavidIntroduction: Artemisinin is a secondary metabolite well-known for its use in the treatment of malaria. It also displays other antimicrobial activities which further increase its interest. At present, Artemisia annua is the sole commercial source of the substance, and its production is limited, leading to a global deficit in supply. Furthermore, the cultivation of A. annua is being threatened by climate change....
The use of chitosan oligosaccharide to improve artemisinin yield in well-watere...
García-García, Ana L.; Matos, Ana Rita; Feijão, Eduardo; Cruz De Carvalho, Ricardo; Boto, Alicia; Marques da Silva, Jorge; Jiménez-Arias, DavidIntroduction: Artemisinin is a secondary metabolite well-known for its use in the treatment of malaria. It also displays other antimicrobial activities which further increase its interest. At present, Artemisia annua is the sole commercial source of the substance, and its production is limited, leading to a global deficit in supply. Furthermore, the cultivation of A. annua is being threatened by climate change....
LipidTOX: A fatty acid-based index efficient for ecotoxicological studies with ...
Duarte, Bernardo; Feijão, Eduardo; Franzitta, Marco; Duarte, Irina A.; de Carvalho, Ricardo Cruz; Cabrita, Maria Teresa; Marques, João CarlosContaminants, when present above certain thresholds, can induce physiological constraints to organisms, namely diatoms, a model group representative of marine phytoplankton, triggering feedback mechanisms, such as changes in cell's fatty acid profiles, that can be used as biomarkers towards xenobiotic exposure. Having this in mind and considering the ecological relevance of diatom fatty acid profiles as well as...
Effect Biomarkers of the Widespread Antimicrobial Triclosan in a Marine Model D...
Duarte, Bernardo; Feijão, Eduardo; Cruz De Carvalho, Ricardo; Matos, Ana Rita; Cabrita, Maria Teresa; Novais, Sara C.; Moutinho, ArianaThe present-day COVID-19 pandemic has led to the increasing daily use of antimicrobials worldwide. Triclosan is a manmade disinfectant chemical used in several consumer healthcare products, and thus frequently detected in surface waters. In the present work, we aimed to evaluate the effect of triclosan on diatom cell photophysiology, fatty acid profiles, and oxidative stress biomarkers, using the diatom Phaeoda...
Fluoxetine induces photochemistry-derived oxidative stress on Ulva lactuca
Feijão, Eduardo; Carvalho, Ricardo Cruz de; Duarte, Irina A.; Matos, Ana Rita; Cabrita, Maria Teresa; Utkin, Andrei B.; Caçador, IsabelEmerging pollutants impose a high degree of stress on marine ecosystems, compromising valuable resources, the planet and human health. Pharmaceutical residues often reachmarine ecosystems, and their input is directly related to human activities. Fluoxetine is an antidepressant, and one of the most prescribed selective serotonin reuptake inhibitors globally and has been detected in aquatic ecosystems in concentr...
Effect biomarkers of the widespread antimicrobial triclosan in a marine model d...
Duarte, Bernardo; Feijão, Eduardo; Carvalho, Ricardo Cruz de; Matos, Ana Rita; Cabrita, Maria Teresa; Novais, Sara C.; Moutinho, ArianaThe present-day COVID-19 pandemic has led to the increasing daily use of antimicrobials worldwide. Triclosan is a manmade disinfectant chemical used in several consumer healthcare products, and thus frequently detected in surface waters. In the present work, we aimed to evaluate the effect of triclosan on diatom cell photophysiology, fatty acid profiles, and oxidative stress biomarkers, using the diatom Phaeoda...
Effects of glyphosate-based herbicide on primary production and physiological f...
Carvalho, Ricardo Cruz de; Feijão, Eduardo; Matos, Ana Rita; Cabrita, Maria Teresa; Utkin, Andrei B.; Novais, Sara C.; Lemos, Marco F.L.The use of glyphosate-based herbicides (GBHs) worldwide has increased exponentially over the last two decades increasing the environmental risk to marine and coastal habitats. The present study investigated the effects of GBHs at environmentally relevant concentrations (0, 10, 50, 100, 250, and 500 ug.L-1) on the physiology and biochemistry (photosynthesis, pigment, and lipid composition, antioxidative systems ...