Serum iron and copper status and oxidative stress in severe and mild preeclampsia

2006 ◽  
Vol 24 (3) ◽  
pp. 209-215 ◽  
Author(s):  
Zehra Serdar ◽  
Esma Gür ◽  
Osman Develioğlu
Keyword(s):  
Oxidative Stress ◽  
Serum Iron ◽  
Copper Status ◽  
Mild Preeclampsia ◽  
And Oxidative Stress ◽  
And Copper Status

DNA damage and oxidative stress in patients with mild preeclampsia and offspring

2013 ◽  
Vol 170 (2) ◽  
pp. 377-380 ◽  
Author(s):  
Nese Hilali ◽  
Abdurrahim Kocyigit ◽  
Mehmet Demir ◽  
Aysun Camuzcuoglu ◽  
Adnan Incebiyik ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dna Damage ◽  
Mild Preeclampsia ◽  
And Oxidative Stress

scholarly journals Inflammatory and oxidative status in European captive black rhinoceroses: a link with Iron Overload Disorder?

2020 ◽  
Author(s):  
Hanae Pouillevet ◽  
Nicolas Soetart ◽  
Delphine Boucher ◽  
Rudy Wedlarski ◽  
Laetitia Jaillardon
Keyword(s):  
Oxidative Stress ◽  
Iron Overload ◽  
Serum Iron ◽  
Iron Status ◽  
The Body ◽  
Stress Markers ◽  
Oxidative Markers ◽  
Inflammatory Status ◽  
The Impact ◽  
And Oxidative Stress

AbstractIron Overload Disorder (IOD) is a syndrome developed by captive browsing rhinoceroses like black rhinoceroses (Diceros bicornis) in which hemosiderosis settles in vital organs while free iron accumulates in the body, potentially predisposing to various secondary diseases. Captive grazing species like white rhinoceroses (Ceratotherium simum) do not seem to be affected. The pro-oxidant and pro-inflammatory properties of iron, associated with the poor antioxidant capacities of black rhinoceroses, could enhance high levels of inflammation and oxidative stress leading to rapid ageing and promoting diseases. In this prospective study, 15 black (BR) and 29 white rhinoceroses (WR) originating from 22 European zoos were blood-sampled and compared for their iron status (serum iron), liver/muscle biochemical parameters (AST, GGT, cholesterol), inflammatory status (total proteins, protein electrophoresis) and oxidative stress markers (SOD, GPX, dROMs). Results showed higher serum iron and liver enzyme levels in black rhinoceroses (P<0.01), as well as higher GPX (P<0.05) and dROM (P<0.01) levels. The albumin/globulin ratio was lower in black rhinoceroses (P<0.05) due to higher α2-globulin levels (P<0.001). The present study suggests a higher inflammatory and oxidative profile in captive BR than in WR, possibly in relation to iron status. This could be either a consequence or a cause of iron accumulation, potentially explaining rapid ageing and various diseases. Further investigations are needed to assess the prognostic value of the inflammatory and oxidative markers in captive black rhinoceroses, particularly for evaluating the impact of reduced-iron and antioxidant-supplemented diets.

scholarly journals Capsular Polysaccharide Phase Variation in Vibrio vulnificus

2006 ◽  
Vol 72 (11) ◽  
pp. 6986-6993 ◽  
Author(s):  
Tamara Hilton ◽  
Tom Rosche ◽  
Brett Froelich ◽  
Benjamin Smith ◽  
James Oliver
Keyword(s):  
Oxidative Stress ◽  
Quorum Sensing ◽  
Cell Surface ◽  
Serum Iron ◽  
Capsular Polysaccharide ◽  
Vibrio Vulnificus ◽  
Phase Variation ◽  
Fatality Rate ◽  
Single Colony ◽  
And Oxidative Stress

ABSTRACT Commonly found in raw oysters, Vibrio vulnificus poses a serious health threat to immunocompromised individuals and those with serum iron overload, with a fatality rate of approximately 50%. An essential virulence factor is its capsular polysaccharide (CPS), which is responsible for a significant increase in virulence compared to nonencapsulated strains. However, this bacterium is known to vary the amount of CPS expressed on the cell surface, converting from an opaque (Op) colony phenotype to a translucent (Tr) colony phenotype. In this study, the consistency of CPS conversion was determined for four strains of V. vulnificus. Environmental conditions including variations in aeration, temperature, incubation time, oxidative stress, and media (heart infusion or modified maintenance medium agar) were investigated to determine their influence on CPS conversion. All conditions, with the exception of variations in media and oxidative stress, significantly affected the conversion of the population, with high ranges of CPS expression found even within cells from a single colony. The global quorum-sensing regulators RpoS and AI-2 were also examined. While RpoS was found to significantly mediate phenotypic conversion, quorum sensing was not. Finally, 12 strains that comprise the recently found clinical (C) and environmental (E) genotypes of V. vulnificus were examined to determine their rates of population conversion. C-genotype strains, which are most often associated with infection, had a significantly lower rate of population conversion from Op to Tr phenotypes than did E-genotype strains (ca. 38% versus ca. 14%, respectively). Biofilm capabilities of these strains, however, were not correlated with increased population conversion.

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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