10 documents found, page 1 of 1
Effect of individual's characteristics on volatile organic compoounds profile a...
Slezakova, Klara; Cavaleiro-Rufo, J.; Esteves, F.; Costa, D.; Pereira, M.C.; Teixeira, J.P.; Madureira, J.Breath analysis using an electronic nose (eNose) is a technology for exhaled volatile organic compounds (VOCs) that has shown potential in the diagnosis of respiratory diseases. However, the effect of an individual’s characteristics in the exhaled VOCs profile is far from fully understood. This pilot study aimed to identify the relevant characteristics of participants that may influence the VOCs profiles by the...
Urinary biomonitoring in firefighters: baseline data of polycyclic aromatic hyd...
Barros, B.; Oliveira, M.; Paiva, M.; Fernandes, A.; Alves, S.; Vaz, J.; Esteves, F.; Slezakova, K.; Alves, M.J.; Madureira, J.; Pereira, M.C.Polycyclic aromatic hydrocarbons (PAHs) are among the most relevant pollutants in the firefighting context and urine the most straightforward and interesting matrix for biomonitoring. Recent studies have found elevated levels of PAH metabolites in firefighters in comparison to the general population. Since Portuguese firefighters are poorly characterized, the aim of this study was to determine the baseline data...
Occupational Exposure of Firefighters in Non-fire Settings
Slezakova, K.; Esteves, F.; Vaz, J.; Alves, M.J.; Madureira, J.; Costa, S.; Fernandes, A.; Teixeira, João Paulo; Morais, S.; Pereira, M.C.Freshwater pollution is a huge concern. A study aiming to evaluate physico-chemical characteristics, microbiota, occurrence of two groups of persistent environmental pollutants with similar chemical properties (polycyclic aromatic hydrocarbons- PAHs and microplastics - MPs) in Alqueva's surface water was performed during 2021.
Assessment of indoor air exposure at residential homes: Inhalation dose and lun...
Slezakova, K.; Madureira, J.; Silva, A.I.; Lage, B.; Mendes, A.; Aguiar, L.; Pereira, M.C.; Teixeira, J.P.; Costa, C.Accurate assessment of particulate matter (PM) dose and respiratory deposition is essential to better understand the risks of exposure to PM and, consequently, to develop the respective risk-control strategies. In homes, this is especially relevant in regards to ultrafine particles (UFP; <0.1 μm) which origin in these environments is mostly due to indoor sources. Thus, this study aimed to estimate inhalation do...
Biosensor for direct bioelectrocatalysis detection of nitric oxide using nitric...
Gomes, F.O.; Maia, L.B.; Loureiro, J.A.; Pereira, M.C.; Delerue-Matos, Cristina; Moura, I.; Moura, J.J.G.; Morais, SimoneAn enzymatic biosensor based on nitric oxide reductase (NOR; purified from Marinobacter hydrocarbonoclasticus) was developed for nitric oxide (NO) detection. The biosensor was prepared by deposition onto a pyrolytic graphite electrode (PGE) of a nanocomposite constituted by carboxylated single-walled carbon nanotubes (SWCNTs), a lipidic bilayer [1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine (DOPE), ...
Firefighters’ occupational exposure to polycyclic aromatic hydrocarbons at Port...
Oliveira, M.; Slezakova, K.; Alves, M.J.; Fernandes, A.; Teixeira, J.P.; Delerue- Matos, C.; Pereira, M.C.; Morais, S.Polycyclic aromatic hydrocarbons (PAHs) are among the most relevant pollutants due to their toxic, mutagenic, and carcinogenic properties. Although scarce information exists regarding firefighters’ exposure to PAHs, there is a great gap of knowledge regarding this topic. Thus the aim of this study was to assess firefighters’ personal exposure to PAHs during regular work shifts at fire stations, with emphasis on...
Wildland firefighters: DNA damage and oxidative stress assessment
Abreu, A.; Duarte, A.; Silva, S.; Morais, S.; Pereira, M.C.; Fernandes, A.; Teixeira, J.P.; Costa, S.Portugal is a high risk country for forest fires. In 2013 alone, Portugal forests accounted for more than 50% of the total burned area of Southern Europe. Portuguese firefighting is supported by a human force of 30.000 firefighters. Firefighters are often exposed to many toxic combustion products, including known carcinogens (benzene, vinyl chloride, formaldehyde, polychlorinated biphenyls, particulate matter)....
Exposure to emissions from cleaning products in primary schools: a test chamber...
Cavaleiro Rufo, João; Madureira, J.; Paciência, I.; Sousa, J.; Oliveira Fernandes, E.; Slezakova, K.; Pereira, M.C.; Aguiar, L.; Teixeira, J.P.The aim of this study was to investigate volatile organic compound (VOC) emissions from floor cleaning products (FCPs) used in primary schools and compare them with emissions from a previously recognised low-emitting product (control sample). Samples of FCPs used in 3 primary schools and a control sample were collected and subsequently examined in a test chamber. Measurements were performed at t = 0, 60, 120, 2...
Assessment of ultrafine particles in Portuguese preschools: levels and exposure...
Fonseca, J.; Slezakova, Klara; Morais, S.; Pereira, M.C.The aim of this work was to assess ultrafine particles (UFP) number concentrations in different microenvironments of Portuguese preschools and to estimate the respective exposure doses of UFP for 3–5-year-old children (in comparison with adults). UFP were sampled both indoors and outdoors in two urban (US1, US2) and one rural (RS1) preschool located in north of Portugal for 31 days. Total levels of indoor UFP w...
End-Stage Renal Disease in Familial Amyloidosis ATTR Val30Met: A
Lobato, L.; Ventura, A.; Beirão, I.; Miranda, H.P.; Seca, R.; Henriques, A.C.; Teixeira, M.; Sarmento, A.M.; Pereira, M.C.Transplant Proc. 2003 May;35(3):1116-20. End-stage renal disease in familial amyloidosis ATTR Val30Met: a definitive indication to combined liver-kidney transplantation. Lobato L, Ventura A, Beirão I, Miranda HP, Seca R, Henriques AC, Teixeira M, Sarmento AM, Pereira MC. Department of Nephrology, and Liver Transplantation Program, Hospital Geral de Santo António, Largo Professor Abel Salazar, 4050, Porto, Portu...