scholarly journals Plasma Selenium-dependent Glutathione Peroxidase

1989 ◽  
Vol 264 (27) ◽  
pp. 15850-15855
Author(s):  
N Avissar ◽  
J C Whitin ◽  
P Z Allen ◽  
D D Wagner ◽  
P Liegey ◽  
...  
Keyword(s):  
Glutathione Peroxidase ◽  
Plasma Selenium

scholarly journals Effect of Cocoyam Modified Starch (Xanthosoma sagittifolium), Beetroot Juice, Cocoyam Modified Starch Adsorbing Beetroot on Plasma Selenium and Glutathione Peroxidase of Pre-Diabetic Rat

2020 ◽  
Vol 426 ◽  
pp. 012184
Author(s):  
Said Naufal Hibaturrahman ◽  
Hiroshi Koyama ◽  
Satomi Kameo ◽  
Priyo Waspodo ◽  
Ata Aditya Wardana ◽  
...  
Keyword(s):  
Glutathione Peroxidase ◽  
Diabetic Rat ◽  
Modified Starch ◽  
Beetroot Juice ◽  
Plasma Selenium ◽  
Xanthosoma Sagittifolium

Blood plasma selenium concentration and glutathione peroxidase activity in bal and blood of rats exposed to NOx

1998 ◽  
Vol 95 ◽  
pp. 221
Author(s):  
J. Gromadzińska ◽  
W. Wąsowicz ◽  
K. Rydzyński ◽  
J. Neve ◽  
R. Świercz
Keyword(s):  
Glutathione Peroxidase ◽  
Blood Plasma ◽  
Peroxidase Activity ◽  
Selenium Concentration ◽  
Glutathione Peroxidase Activity ◽  
Plasma Selenium ◽  
Plasma Selenium Concentration

Plasma-selenium, glutathione peroxidase in erythrocytes and mercury in plasma in patients allegedly subject to oral galvanism

1987 ◽  
Vol 95 (4) ◽  
pp. 328-334
Author(s):  
MARGARETA MOLIN ◽  
STEFAN MARKLUND ◽  
BO BERGMAN ◽  
MAUD BERGMAN ◽  
EVERT STENMAN
Keyword(s):  
Glutathione Peroxidase ◽  
Plasma Selenium

Plasma selenium and glutathione peroxidase activity fluctuate during the rat estrous cycle

1995 ◽  
Vol 15 (2) ◽  
pp. 267-277 ◽  
Author(s):  
Anne M. Smith ◽  
Cheongmin Cha ◽  
Robert E. Kimura
Keyword(s):  
Glutathione Peroxidase ◽  
Estrous Cycle ◽  
Peroxidase Activity ◽  
Glutathione Peroxidase Activity ◽  
Plasma Selenium

Comparative effects of selenium supplementation on the plasma selenium concentration and erythrocyte glutathione peroxidase activity in cattle and camels

1998 ◽  
Vol 67 (3) ◽  
pp. 461-466 ◽  
Author(s):  
M. Bengoumi ◽  
A. K. Essamadi ◽  
J. C. Tressol ◽  
J. P. Chacornac ◽  
B. Faye
Keyword(s):  
Glutathione Peroxidase ◽  
Peroxidase Activity ◽  
Selenium Concentration ◽  
Basal Diet ◽  
Glutathione Peroxidase Activity ◽  
Plasma Selenium ◽  
Selenium Metabolism ◽  
Mineral Supplementation ◽  
Very High ◽  
Plasma Selenium Concentration

AbstractAt an experimental farm, five camels and five cows were each given a similar basal diet for 6 months. They received oral trace element supplementation for 3 months (day 22 to 112) which included zinc, copper, selenium, manganese, iodine and cobalt and corresponded to twice the daily requirement generally recommended for cows. Plasma selenium concentrations were significantly lower in the camels (20 (s.e. 2) mg/l) compared with the cows (33 (s.e. 2) μg/l). The mineral supplementation induced a large increase in the plasma selenium concentration in the camels which reached 200 (s.e. 35) fig/l. In the cows, the increase was much smaller and did not go beyond 65 (s.e. 8) μg/l. Before supplementation the red blood cell glutathione peroxidase activity was similar in the camel and the cow varying between 4000 and 6000 IU per 100 g haemoglobin. In both species, this activity increased with mineral supplementation and remained very high even when mineral supplementation was stopped. The results suggested that selenium metabolism in camels is different from that in the cows.

Determination of selenium concentration and glutathione peroxidase activity in plasma and erythrocytes.

1982 ◽  
Vol 28 (2) ◽  
pp. 311-316 ◽  
Author(s):  
P A Pleban ◽  
A Munyani ◽  
J Beachum
Keyword(s):  
Glutathione Peroxidase ◽  
Peroxidase Activity ◽  
Zeeman Effect ◽  
Selenium Concentration ◽  
Glutathione Peroxidase Activity ◽  
Plasma Selenium ◽  
Plasma Glutathione Peroxidase ◽  
Flameless Atomic Absorption Spectroscopy ◽  
Plasma Glutathione

Abstract We determined selenium concentrations and activities of the selenoenzyme, glutathione peroxidase (EC 1.11.1.9), in the plasma and erythrocytes of 38 apparently healthy women. We determined selenium concentrations directly by polarized Zeeman-effect flameless atomic absorption spectroscopy. Within-run precision studies for the assays gave CVs of 5.6% for a mean erythrocyte selenium concentration of 149.9 (SD 8.3) microgram/L (n = 10) and 6.4% for a mean plasma selenium concentration of 97.3 (SD 6.2) microgram/L (n = 12). For the women, mean selenium concentrations were 141.4 (SD 14.3) microgram/L of erythrocytes [0.49 (SD 0.07) microgram/g of hemoglobin and 96.3 (SD 14.2) microgram/L of plasma. Glutathione peroxidase activities were measured by a modification of the method of Paglia and Valentine (J. Lab. Clin. Med. 70: 158--169, 1967). Within-run precision studies for the glutathione peroxidase assays gave CVs of 12.8% for mean erythrocyte glutathione peroxidase activity of 77.2 (SD 9.9) U/g of hemoglobin (n = 13), and 8.1% for mean plasma activity of 312.5 (SD 25.2) U/L (n = 11). Mean enzyme activity was 78.7 (SD 12.9) U/g of hemoglobin for erythrocytes and 424 (SD 40) U/L for plasma. Erythrocyte selenium concentrations and glutathione peroxidase activities were positively, but poorly, correlated (r = 0.41, p less than 0.01).

scholarly journals Extracellular glutathione peroxidase (Gpx3) binds specifically to basement membranes of mouse renal cortex tubule cells

2010 ◽  
Vol 298 (5) ◽  
pp. F1244-F1253 ◽  
Author(s):  
Gary E. Olson ◽  
John C. Whitin ◽  
Kristina E. Hill ◽  
Virginia P. Winfrey ◽  
Amy K. Motley ◽  
...  
Keyword(s):  
Glutathione Peroxidase ◽  
Specific Binding ◽  
Selenium Deficiency ◽  
Basement Membranes ◽  
Whole Body ◽  
Kidney Cortex ◽  
Plasma Selenium ◽  
Tubule Cells

Glutathione peroxidase-3 (Gpx3), also known as plasma or extracellular glutathione peroxidase, is a selenoprotein secreted primarily by kidney proximal convoluted tubule cells. In this study Gpx3−/−mice have been produced and immunocytochemical techniques have been developed to investigate Gpx3 metabolism. Gpx3−/−mice maintained the same whole-body content and urinary excretion of selenium as did Gpx3+/+mice. They tolerated selenium deficiency without observable ill effects. The simultaneous knockout of Gpx3 and selenoprotein P revealed that these two selenoproteins account for >97% of plasma selenium. Immunocytochemistry experiments demonstrated that Gpx3 binds selectively, both in vivo and in vitro, to basement membranes of renal cortical proximal and distal convoluted tubules. Based on calculations using selenium content, the kidney pool of Gpx3 is over twice as large as the plasma pool. These data indicate that Gpx3 does not serve in the regulation of selenium metabolism. The specific binding of a large pool of Gpx3 to basement membranes in the kidney cortex strongly suggests a need for glutathione peroxidase activity in the cortical peritubular space.

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