Browsing Science (Faculty of) by Author "Bragg, Leslie M."
Now showing items 1-10 of 10
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An Assessment of the Spatial and Temporal Variability of Biological Responses to Municipal Wastewater Effluent in Rainbow Darter (Etheostoma caeruleum) Collected along an Urban Gradient
Fuzzen, Meghan; Bragg, Leslie M.; Tetreault, Gerald R.; Bahamonde, Paulina; Tanna, Rajiv N.; Bennett, Charles J.; McMaster, Mark E.; Servos, Mark R. (PLOS, 2016-10-24)Municipal wastewater effluent (MWWE) and its constituents, such as chemicals of emerging concern, pose a potential threat to the sustainability of fish populations by disrupting key endocrine functions in aquatic organisms. ... -
Effect of Background Water Matrices on Pharmaceutical and Personal Care Product Removal by UV-LED/TiO2
Fattahi, Azar; Jaciw-Zurakowsky, Ivana; Srikanthan, Nivetha; Bragg, Leslie M.; Liang, Robert; Zhou, Norman Y.; Servos, Mark. R.; Arlos, Maricor Jane (Multidisciplinary Digital Publishing Institute, 2021-04-30)In this study, we evaluated the effectiveness of UV-LED-irradiated TiO2 in removing 24 commonly detected PPCPs in two water matrices (municipal wastewater effluent and Suwannee River NOM–synthetic water) and compared their ... -
Gold nanoparticles as dehydrogenase mimicking nanozymes for estradiol degradation
Zhang, Zijie; Bragg, Leslie M.; Servos, Mark R.; Liu, Juewen (Elsevier, 2019-09)Nanozyme catalysis has been mainly focused on a few chromogenic and fluorogenic substrates, while environmentally and biologically important compounds need to be tested to advance the field. In this work, we studied oxidation ... -
Impacts of wastewater treatment plant effluent on energetics and stress response of rainbow darter (Etheostoma caeruleum) in the Grand River watershed
Mehdi, Hossein; Dickson, Fiona H.; Bragg, Leslie M.; Servos, Mark R.; Craig, Paul M. (Elsevier, 2018-10)The objective of this study was to assess the effects of municipal wastewater treatment plant effluent on the energetics and stress response of rainbow darter (Etheostoma caeruleum). Male and female rainbow darter were ... -
Impacts on Metabolism and Gill Physiology of Darter Species (Etheostoma spp.) That Are Attributed to Wastewater Effluent in the Grand River
Hodgson, Rhiannon; Bragg, Leslie M.; Dhiyebi, Hadi A.; Servos, Mark. R.; Craig, Paul M. (Multidisciplinary Digital Publishing Institute, 2020-11-25)The effluent from municipal wastewater treatment plants is a major point source of contamination in Canadian waterways. The improvement of effluent quality to reduce contaminants, such as pharmaceuticals and personal care ... -
In vivo microsampling to capture the elusive exposome
Bessonneau, Vincent; Ings, Jennifer Sophia; McMaster, Mark; Smith, Richard; Bragg, Leslie M.; Servos, Mark R.; Pawliszyn, Janusz (Nature Publishing Group, 2017-03-07)Loss and/or degradation of small molecules during sampling, sample transportation and storage can adversely impact biological interpretation of metabolomics data. In this study, we performed in vivo sampling using solid-phase ... -
Multiple Stressors in the Environment: The Effects of Exposure to an Antidepressant (Venlafaxine) and Increased Temperature on Zebrafish Metabolism
Mehdi, Hossein; Bragg, Leslie M.; Servos, Mark R.; Craig, Paul M. (Multidisciplinary Digital Publishing Institute, 2019-11-19)Aquatic organisms are continuously exposed to multiple environmental stressors working cumulatively to alter ecosystems. Wastewater-dominated environments are often riddled by a myriad of stressors, such as chemical and ... -
Photocatalytic Degradation of Microcystins by TiO2 Using UV-LED Controlled Periodic Illumination
Schneider, Olivia M.; Liang, Robert; Bragg, Leslie M.; Jaciw-Zurakowsky, Ivana; Fattahi, Azar; Rathod, Shasvat; Peng, Peng; Servos, Mark. R.; Zhou, Norman Y. (Multidisciplinary Digital Publishing Institute, 2019-02-14)Toxic microcystins (MCs) produced by freshwater cyanobacteria such as Microcystis aeruginosa are of concern because of their negative health and economic impacts globally. An advanced oxidation process using UV/TiO2 offers ... -
Rainbow trout exposed to benzo[a]pyrene yields conserved microRNA binding sites in DNA methyltransferases across 500 million years of evolution
Kuc, Christopher; Richard, Daniel J.; Johnson, Samantha; Bragg, Leslie M.; Servos, Mark R.; Doxey, Andrew C.; Craig, Paul M. (Springer, 2017-12-04)The objective of this study was to examine the regulation of DNA methylation following acute (24 h) and prolonged (14 d) exposure to low (1 ng/L) and high (10 ng/L) benzo[a]pyrene. However, with the recent release of the ... -
Tissue storage affects lipidome profiling in comparison to in vivo microsampling approach
Roszkowska, Anna; Yu, Miao; Bessonneau, Vincent; Bragg, Leslie M.; Servos, Mark R.; Pawliszyn, Janusz (Springer, 2018-05-03)Low-invasive in vivo solid-phase microextraction (SPME) was used to investigate the lipid profiles of muscle tissue of living fish. Briefly, mixed mode SPME fibers were inserted into the muscle for 20 min extraction, and ...