Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Publication Type
Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
How Birds During Migration Maintain (Oxidative) Balance, Scott R. Mcwilliams, Wales A. Carter, Clara Cooper-Mullin, Kristen J. Demoranville, Abigail E. Frawley, Barbara J. Pierce, Megan Skrip
How Birds During Migration Maintain (Oxidative) Balance, Scott R. Mcwilliams, Wales A. Carter, Clara Cooper-Mullin, Kristen J. Demoranville, Abigail E. Frawley, Barbara J. Pierce, Megan Skrip
Biology Faculty Publications
Animals dynamically adjust their physiology and behavior to survive in changing environments, and seasonal migration is one life stage that demonstrates these dynamic adjustments. As birds migrate between breeding and wintering areas, they incur physiological demands that challenge their antioxidant system. Migrating birds presumably respond to these oxidative challenges by up-regulating protective endogenous systems or accumulating dietary antioxidants at stopover sites, although our understanding of the pre-migration preparations and mid-migration responses of birds to such oxidative challenges is as yet incomplete. Here we review evidence from field and captive-bird studies that address the following questions: (1) Do migratory birds build …
Flight And Dietary Antioxidants Influence Antioxidant Expression And Activity In A Migratory Bird, Kristen J. Demoranville, Wales A. Carter, Barbara J. Pierce, Scott R. Mcwilliams
Flight And Dietary Antioxidants Influence Antioxidant Expression And Activity In A Migratory Bird, Kristen J. Demoranville, Wales A. Carter, Barbara J. Pierce, Scott R. Mcwilliams
Biology Faculty Publications
Ecologically-relevant factors such as exercise and diet quality can directly influence how physiological systems work including those involved in maintaining oxidative balance; however, to our knowledge, no studies to date have focused on how such factors directly affect expression of key components of the endogenous antioxidant system (i.e., transcription factors, select antioxidant genes, and corresponding antioxidant enzymes) in several metabolically active tissues of a migratory songbird. We conducted a 3-factor experiment that tested the following hypotheses: (H1) Daily flying over several weeks increases the expression of transcription factors NRF2 and PPARs as well as endogenous antioxidant genes (i.e., CAT, SOD1, …
Antioxidant Supplementation Ameliorates Bull Sperm Parameters And Fertilizing Abilityfollowing The Freeze-Thaw Process, Pürhan Barbaros Tuncer, Serpi̇l Sariözkan, Mustafa Numan Bucak, Serhat Büyükleblebi̇ci̇
Antioxidant Supplementation Ameliorates Bull Sperm Parameters And Fertilizing Abilityfollowing The Freeze-Thaw Process, Pürhan Barbaros Tuncer, Serpi̇l Sariözkan, Mustafa Numan Bucak, Serhat Büyükleblebi̇ci̇
Turkish Journal of Veterinary & Animal Sciences
This study's goal was to reveal the effects of antioxidant supplementation on motility, motion characters, morphology, DNA integrity, and fertilizing potential of cryopreserved bovine sperm. The ejaculates were collected from three Holstein bulls. At least ten ejaculates were collected per bull. The ejaculates were immediately separated into five aliquots, diluted in the Cryobos (Magapor Co. Ltd., Zaragoza, Spain) commercial extender, including 2.5 mM taurine, 2.5 mM cysteine, 2.5 mM methionine, 2.5 mM glutamine, and no additives were used. Afterward, they were frozen in 0.25 mL French straws, and liquid nitrogen was used for the storage of semen. The supplementation of …