Publications by authors named "Jose Lucas Viana"
We investigated the occurrence and the environmental risk of eight contaminants of emerging concern (CECs; acetaminophen, naproxen, diclofenac, methylparaben, 17β-estradiol, sulfathiazole, sulfadimethoxine, and sulfamethazine) in three Brazilian water bodies, namely, the Monjolinho River Basin (São Paulo State), the Mogi Guaçu River (São Paulo State), and the Itapecuru River (Maranhão State) in three sampling campaigns. The CECs were only quantified in surface water samples collected at the Monjolinho River Basin. Acetaminophen, naproxen, and methylparaben were detected in the range of <200 to 575.
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- - Methylmercury (MeHg) is a toxic substance that adversely affects brain function, particularly in adult male mice, by impacting various neurochemical markers and behaviors after 30 days of exposure through drinking water.
- - The study found that MeHg exposure led to increased weight gain and higher levels of plasma triglycerides and cholesterol, indicating systemic inflammation, as evidenced by elevated TNF and endotoxin levels.
- - In the hippocampus, MeHg-intoxicated mice showed signs of oxidative stress and changes in amino acid levels, such as increased GABA and glycine and decreased taurine, which correlated with impaired behavioral performance in memory tests.