6 documents found, page 1 of 1
Avaliação do potencial citotóxico de microplásticos em linhas celulares intesti...
Valente, JV; Cristóvão, AC; Pastorinho, MR; Sousa, ACAOs Microplásticos (MPs) são uma classe emergente de contaminantes, que resultam da libertação directa de pequenas partículas que constituem total ou parcialmente objetos de uso quotidiano ou da deterioração de plásticos que originalmente possuem maiores dimensões. O polietileno (PE), a poliamida (PA-nylon 12) e o policloreto de vinilo (PVC) são três polímeros muito comumente utilizados no fabrico de sacos de pl...
Avaliação toxicológica de lixiviados de aterro sanitário tratados usando o crus...
Coelho, SR; Sousa, ACA; Pastorinho, MR; Pacheco, MJ; Ciríaco, L; Lopes, A; Fernandes, AOs resíduos sólidos urbanos, gerados em grande escala pela sociedade moderna, precisam de ser corretamente descartados por forma a mitigar o seu impacto ambiental e na saúde pública. Estes resíduos são normalmente depositados em aterros sanitários, e, consequentemente, são gerados lixiviados altamente tóxicos que precisam de ser tratados. Este trabalho tem como objetivo avaliar a eficácia de diferentes tratamen...
When toxicity goes circular: Isoprostanes as markers and effectors of oxidative...
Pais, RT; Sousa, ACA; Pastorinho, MRIn normal conditions, there is a dynamic equilibrium between oxidants and antioxidants in the human body; however, when there is an unbalance in this redox state, oxidative stress occurs. In an unbalanced state, the peroxidation of polyunsaturated fatty acids originates isoprostanes (IsoPs), which can be considered as markers of oxidative stress. Since oxidative stress is associated with several non-communicabl...
Frailty syndrome, biomarkers and environmental factors – A pilot study
Pastorinho, MR; Sousa, ACAFrailty is an age-related syndrome expected to increase over the next decades. This syndrome has been identified to be the most common condition leading to disability, institutionalisation and death in the elderly. The aim of this pilot study is to investigate a possible link between frailty status, biomarkers and environmental exposures. A group of 71 older adults (≥65 years old) was engaged in this study. The...
Ecotoxicological Evaluation of Methiocarb Electrochemical Oxidation
Pastorinho, MR; Sousa, ACAThe ecotoxicity of methiocarb aqueous solutions treated by electrochemical oxidation was evaluated utilizing the model organism Daphnia magna. The electrodegradation experiments were performed using a boron-doped diamond anode and the influence of the applied current density and the supporting electrolyte (NaCl or Na2SO4) on methiocarb degradation and toxicity reduction were assessed. Electrooxidation treatment...
House dust fungal communities' characterization: A double take on the six by si...
Amaro, R; Coelho, SD; Pastorinho, MR; Taborda-Barata, L; Vaz-Patto, MA; Monteiro, M; Nepomuceno, MCS; Lanzinha, JCG; Teixeira, JP; Pereira, CCFungi are a group of microbes that are found with particular incidence in the indoor environment. Their direct toxicity or capability of generating toxic compounds has been associated with a large number of adverse health effects, such as infectious diseases and allergies. Given that in modern society people spend a large part of their time indoors; fungal communities' characterization of this environmental com...