scholarly journals Do Hormones, Telomere Lengths, and Oxidative Stress form an Integrated Phenotype? A Case Study in Free-Living Tree Swallows

2016 ◽  
Vol 56 (2) ◽  
pp. 138-145 ◽  
Author(s):  
J. Q. Ouyang ◽  
Á. Z. Lendvai ◽  
I. T. Moore ◽  
F. Bonier ◽  
M. F. Haussmann
Keyword(s):  
Oxidative Stress ◽  
Tree Swallows ◽  
Free Living ◽  
Living Tree ◽  
And Oxidative Stress

Compromised immune competence in free-living tree swallows exposed to mercury

Ecotoxicology ◽  
2009 ◽  
Vol 18 (5) ◽  
pp. 499-503 ◽  
Author(s):  
Dana M. Hawley ◽  
Kelly K. Hallinger ◽  
Daniel A. Cristol
Keyword(s):  
Immune Competence ◽  
Tree Swallows ◽  
Free Living ◽  
Living Tree

Consequences of immune system aging in nature: a study of immunosenescence costs in free-living Tree Swallows

Ecology ◽  
2011 ◽  
Vol 92 (4) ◽  
pp. 952-966 ◽  
Author(s):  
Maria G. Palacios ◽  
David W. Winkler ◽  
Kirk C. Klasing ◽  
Dennis Hasselquist ◽  
Carol M. Vleck
Keyword(s):  
Immune System ◽  
Tree Swallows ◽  
Free Living ◽  
Living Tree

The corticosterone stress response and mercury contamination in free-living tree swallows, Tachycineta bicolor

Ecotoxicology ◽  
2009 ◽  
Vol 18 (5) ◽  
pp. 514-521 ◽  
Author(s):  
Melinda D. Franceschini ◽  
Oksana P. Lane ◽  
David C. Evers ◽  
J. Michael Reed ◽  
Bart Hoskins ◽  
...  
Keyword(s):  
Stress Response ◽  
Mercury Contamination ◽  
Tachycineta Bicolor ◽  
Tree Swallows ◽  
Free Living ◽  
Living Tree

scholarly journals Disruption of sitA Compromises Sinorhizobium meliloti for Manganese Uptake Required for Protection against Oxidative Stress

2006 ◽  
Vol 189 (5) ◽  
pp. 2101-2109 ◽  
Author(s):  
Bryan W. Davies ◽  
Graham C. Walker
Keyword(s):  
Oxidative Stress ◽  
Sinorhizobium Meliloti ◽  
Insertion Mutation ◽  
Periplasmic Binding Protein ◽  
Free Living ◽  
Transposon Insertion ◽  
Oxidative Stress Defense ◽  
Manganese Uptake ◽  
Iron Manganese ◽  
And Oxidative Stress

ABSTRACT During the initial stages of symbiosis with the host plant Medicago sativa, Sinorhizobium meliloti must overcome an oxidative burst produced by the plant in order for proper symbiotic development to continue. While identifying mutants defective in symbiosis and oxidative stress defense, we isolated a mutant with a transposon insertion mutation of sitA, which encodes the periplasmic binding protein of the putative iron/manganese ABC transporter SitABCD. Disruption of sitA causes elevated sensitivity to the reactive oxygen species hydrogen peroxide and superoxide. Disruption of sitA leads to elevated catalase activity and a severe decrease in superoxide dismutase B (SodB) activity and protein level. The decrease in SodB level strongly correlates with the superoxide sensitivity of the sitA mutant. We demonstrate that all free-living phenotypes of the sitA mutant can be rescued by the addition of exogenous manganese but not iron, a result that strongly implies that SitABCD plays an important role in manganese uptake in S. meliloti.

Mercury exposure and survival in free-living tree swallows (Tachycineta bicolor)

Ecotoxicology ◽  
2010 ◽  
Vol 20 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Kelly K. Hallinger ◽  
Kerri L. Cornell ◽  
Rebecka L. Brasso ◽  
Daniel A. Cristol
Keyword(s):  
Mercury Exposure ◽  
Tachycineta Bicolor ◽  
Tree Swallows ◽  
Free Living ◽  
Living Tree

Ontogeny of innate and adaptive immune defense components in free-living tree swallows, Tachycineta bicolor

2009 ◽  
Vol 33 (4) ◽  
pp. 456-463 ◽  
Author(s):  
Maria G. Palacios ◽  
Joan E. Cunnick ◽  
David Vleck ◽  
Carol M. Vleck
Keyword(s):  
Immune Defense ◽  
Tachycineta Bicolor ◽  
Tree Swallows ◽  
Free Living ◽  
Living Tree ◽  
Adaptive Immune

Association between calcitriol and paricalcitol with oxidative stress in patients with hemodialysis

2020 ◽  
pp. 1-8
Author(s):  
Hasan Haci Yeter ◽  
Berfu Korucu ◽  
Elif Burcu Bali ◽  
Ulver Derici
Keyword(s):  
Oxidative Stress ◽  
Vitamin D ◽  
Antioxidant Status ◽  
Total Antioxidant Status ◽  
Stress Index ◽  
Total Oxidant Status ◽  
Vitamin D Analog ◽  
Total Antioxidant ◽  
Oxidant Status ◽  
And Oxidative Stress

Abstract. Background: The pathophysiological basis of chronic kidney disease and its complications, including cardiovascular disease, are associated with chronic inflammation and oxidative stress. We investigated the effects of active vitamin D (calcitriol) and synthetic vitamin D analog (paricalcitol) on oxidative stress in hemodialysis patients. Methods: This cross-sectional study was composed of 83 patients with a minimum hemodialysis vintage of one year. Patients with a history of any infection, malignancy, and chronic inflammatory disease were excluded. Oxidative markers (total oxidant and antioxidant status) and inflammation markers (C-reactive protein and interleukin-6) were analyzed. Results: A total of 47% (39/83) patients were using active or analog vitamin D. Total antioxidant status was significantly higher in patients with using active or analog vitamin D than those who did not use (p = 0.006). Whereas, total oxidant status and oxidative stress index were significantly higher in patients with not using vitamin D when compared with the patients who were using vitamin D preparation (p = 0.005 and p = 0.004, respectively). On the other hand, total antioxidant status, total oxidant status, and oxidative stress index were similar between patients who used active vitamin D or vitamin D analog (p = 0.6; p = 0.4 and p = 0.7, respectively). Conclusion: The use of active or selective vitamin D analog in these patients decreases total oxidant status and increases total antioxidant status. Also, paricalcitol is as effective as calcitriol in decreasing total oxidant status and increasing total antioxidant status in patients with chronic kidney disease.

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