28 documents found, page 1 of 3
The use of muscle biomarkers for assessing physiological effects of heavy metal...
Quina, Ana Sofia; Rodrigues, Andreia C. M.; Soares, Amadeu M. V. M.; da Luz Mathias, Maria; Gravato, CarlosThe greater white-toothed shrew Crocidura russula has been used as a sentinel species for estimating environmental risks to human populations. Previous studies in mining areas have focused on the liver of shrews as the primary target of physiological and metabolic changes due to heavy metal pollution. However, populations persist even when detoxification by the liver seems to be compromised and damage is observ...
Acetaminophen induced antioxidant and detoxification responses in a stygobitic ...
Duarte, Cláudia; Gravato, Carlos; Di Lorenzo, Tiziana; Sofia Reboleira, AnaA variety of veterinary and human medicinal products (VHMPs) are found in groundwater, an often-neglected habitat inhabited by species with unique traits, stygobitic species. It is crucial to understand the effect of VHMPs on stygobitic species because they may respond differently to stressors than surface species. Our hypothesis is that groundwater species may be more susceptible to environmental contaminants ...
Can the toxicity of polyethylene microplastics and engineered nanoclays on flat...
Santana, Lígia M.B.M. [UNESP]; Rodrigues, Andreia C.M.; Campos, Diana; Kaczerewska, Olga; Figueiredo, Joana; Silva, Sara; Sousa, Isabel; Maia, FredericoMade available in DSpace on 2022-04-29T08:33:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-15; European Commission; Fundação para a Ciência e a Tecnologia; Ministério da Ciência, Tecnologia e Ensino Superior; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); European Regional Development Fund; Centro de Inves...
Microplastic contamination and ecological status of freshwater ecosystems: a ca...
Ribeiro, Andreia; Gravato, Carlos; Cardoso, João Filipe Soares; Ribeiro, Carlos Alexandre; Vieira, Maria Natividade; Rodrigues, CarolinaBackground: Most European rivers have not yet achieved “good” ecological status. In addition, the presence and abundance of microplastics (MPs) in freshwater is a matter of great concern to the scientific community. Methodology: This study assesses the ecological status of four sampling sites of Selho (S1–S4) and Costa-Couros (C1–C4) rivers (Guimarães, Portugal), and the abundance of MPs in sediments and benthi...
Can the toxicity of polyethylene microplastics and engineered nanoclays on flat...
Santana, Lígia M. B. M.; Rodrigues, Andreia C. M.; Campos, Diana; Kaczerewska, Olga; Figueiredo, Joana; Silva, Sara; Sousa, Isabel; Maia, FredericoMicroplastics and nanomaterials are applied in a myriad of commercial and industrial applications. When leaked to natural environments, such small particles might threaten living organisms' health, particularly when considering their potential combination that remains poorly investigated. This study investigated the physiological and biochemical effects of polyethylene (PE; 64-125 μm in size, 0.1, 1.0, and 10.0...
Ecophysiological effects of mercury bioaccumulation and biochemical stress in t...
Rodrigues, Andreia C. M.; Gravato, Carlos; Galvão, Daniela; Silva, Virgília S.; Soares, Amadeu M. V. M.; Gonçalves, Jorge M. S.; Ellis, Jim R.Mercury (Hg) is a non-essential metal that can have toxic effects on the fitness of organisms and tends to bioaccumulate with age and to biomagnify in higher trophic levels. Few studies have assessed oxidative stress and neurotoxicity in deep-water sharks. This study evaluated early ontogenetic changes and physiological effects (antioxidant defences, oxidative damage, aerobic metabolism and neurotransmission fu...
The physiological consequences of delaying metamorphosis in the marine ornament...
Calado, Ricardo; Carvalho, Leina; Rodrigues, Andreia C.M.; Abe, Flávia; Patrício Silva, Ana L.; Soares, Amadeu M.V.M.; Gravato, CarlosThe timing of metamorphosis has recently been referred as a more suitable proxy to evaluate postlarval quality than size. Indeed, while displaying a larger size at settlement, late settlers that originate from larvae that have delayed metamorphosis commonly display poorer growth performances This delay in metamorphosis is possibly at the expenses of larval endogenous energetic reserves that, once allocated to f...
Ecophysiological effects of mercury bioaccumulation and biochemical stress in t...
Rodrigues, Andreia C.M.; Gravato, Carlos; Galvão, Daniela; Silva, Virgília S.; Soares, Amadeu M.V.M.; Gonçalves, Jorge Manuel Santos; Ellis, Jim R.Mercury (Hg) is a non-essential metal that can have toxic effects on the fitness of organisms and tends to bioaccumulate with age and to biomagnify in higher trophic levels. Few studies have assessed oxidative stress and neurotoxicity in deep-water sharks. This study evaluated early ontogenetic changes and physiological effects (antioxidant defences, oxidative damage, aerobic metabolism and neurotransmission fu...
Acetylcholinesterase (AChE) Activity in Embryos of Zebrafish
Gravato, Carlos; Abe, Flávia Renata; de Oliveira, Danielle Palma [UNESP]; Soares, Amadeu M. V. M.; Domingues, InêsMade available in DSpace on 2021-06-25T10:20:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Acetylcholinesterase (AChE) is a useful biomarker for organophosphate and carbamate pesticides exposure. The inhibition of this enzyme has been associated with neurotoxicity and alterations at higher levels of biological organization, such as behavior and development impairments. In this chapter, we des...
Early Life Stage Assays in Zebrafish
Abe, Flávia Renata; Accoroni, Klaus Alvaro Guerrieri; Gravato, Carlos; de Oliveira, Danielle Palma [UNESP]Made available in DSpace on 2021-06-25T10:20:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Fish embryo toxicity (FET) test using zebrafish (Danio rerio) has been established as an alternative assay to animal experimentation. The FET assay enables the assessment of multiple morphological endpoints during the development of zebrafish early life stages, showing high impact to the field of ecotox...