Publications by authors named "W O Barbosa"
Bee population decline is associated with various stressors, including exposure to pollutants. Among these, titanium dioxide (TiO), an emerging nanoparticle (NP) pollutant, potentially affects living organisms, including bees. This study evaluates the impact of TiO NPs ingestion (1.
View Article and Find Full Text PDFArticle Synopsis
- The paper examines the relationship between trade openness and total factor productivity (TFP) using data from December 1991 to March 2024, showing that increased trade openness boosts TFP, particularly by 26 percentage points short-term and 0.16 long-term.
- Although absorptive capacity was studied, it didn't significantly affect TFP in the short term.
- The study highlights the importance for policymakers to create effective resource use strategies in production, encourage investments in human capital, and support innovation to fully leverage the benefits of trade liberalization.
Human visceral leishmaniasis and polymorphisms in interleukin-coding genes: a systematic review.
J Venom Anim Toxins Incl Trop Dis
October 2024
Article Synopsis
- Visceral leishmaniasis (VL) is a tropical disease caused by a parasite, influenced by environmental and genetic factors, particularly the genetic variations in cytokine genes.
- This systematic review and meta-analysis evaluated the impact of specific single nucleotide polymorphisms (SNPs) in interleukin genes on the susceptibility or resistance to VL, using data from multiple scientific databases.
- The analysis revealed significant associations between SNPs in the IFN-γ and IL-18 genes with VL, suggesting that these genetic variations could influence disease outcomes, while no significant links were found for IL-10 gene SNPs.
Introduction: This study aimed to investigate the effectiveness of a supervised physical training program with controlled cadence on functional fitness parameters, quality of life perception, and physical activity level in older adults.
Methods: Sixty physically independent older adults were randomly divided into three groups: Supervised Training (ST, = 20), Unsupervised Training (UT, = 20), and a Control Group (C, = 20). The ST and UT groups participated in a 12-week program, performing exercises three times a week for 30 min.
Physiological responses of the stingless bee Partamona helleri to oral exposure to three agrochemicals: impact on antioxidant enzymes and hemocyte count.
Environ Sci Pollut Res Int
September 2024
Agrochemicals pose significant threats to the survival of bees, yet the physiological impacts of sublethal doses on stingless bees remain poorly understood. This study investigated the effects of acute oral exposure to three commercial formulations of agrochemicals [CuSO (leaf fertilizer), glyphosate (herbicide), and spinosad (bioinsecticide)] on antioxidant enzymes, malondialdehyde content (MDA), nitric oxide (NO) levels, and total hemocyte count (THC) in the stingless bee Partamona helleri. Foragers were exposed to lethal concentrations aimed to kill 5% (LC) of CuSO (120 μg mL) or spinosad (0.
View Article and Find Full Text PDF