The protective role of olive oil hydroxytyrosol against oxidative alterations induced by mercury in human erythrocytes

2015 ◽  
Vol 82 ◽  
pp. 59-63 ◽  
Author(s):  
Lidia Tagliafierro ◽  
Arbace Officioso ◽  
Sergio Sorbo ◽  
Adriana Basile ◽  
Caterina Manna
2009 ◽  
Vol 4 (2) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Kanti Bhooshan Pandey ◽  
Neetu Mishra ◽  
Syed Ibrahim Rizvi

The protective effect of myricetin against tert-butylhydroperoxide (t-BHP) induced oxidative stress in human erythrocytes was investigated. Incubating erythrocytes with t-BHP (10−5M) caused development of oxidative stress, as evidenced by significant ( p < 0.05) increase in erythrocyte malondialdedyde (MDA) and protein carbonyl content, and decrease in intracellular reduced glutathione (GSH), membrane sulphydryl (-SH) groups. Incubation of erythrocytes with myricetin, simultaneously with t-BHP, protected the erythrocytes from oxidative stress, an effect which was dose-dependent. The results demonstrate that myricetin attenuates t-BHP induced oxidative damage, suggesting that supplementation of diet with myricetin/myricetin rich food may be beneficial in all pathological conditions where the antioxidant system of the body is overwhelmed.


2020 ◽  
Vol 81 (1) ◽  
Author(s):  
El-Sabry Abu Amra ◽  
Fakhr El Din M. Lashein ◽  
Amin A. Seleem ◽  
Manar M. Saleh

2013 ◽  
Vol 46 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Sema Eroglu ◽  
Dilek Pandir ◽  
Fatma G Uzun ◽  
Hatice Bas

1999 ◽  
Vol 144 ◽  
pp. 174
Author(s):  
E. Coni ◽  
R. Di Benedetto ◽  
M. Di Pasquale ◽  
C. Giovannini ◽  
R. Vari ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Gamze Yetuk ◽  
Dilek Pandir ◽  
Hatice Bas

The aim of this study was to evaluate the protective effect of catechin and quercetin in sodium benzoate- (SB-) induced oxidative stress in human erythrocytesin vitro. For this, the effects of SB (6.25, 12.5, 25, 50, and 100 μg/mL), catechin (10 μM), and quercetin (10 μM) on lipid peroxidation (LPO) and the activities of SOD, CAT, GPx, and GST were studied. Significantly higher LPO and lower activities of antioxidant enzymes were observed with the increasing concentrations of SB. Catechin or quercetin protected the erythrocytes against SB-induced toxicity only at low concentrations of SB. The presence of catechin or quercetin at 10 μM have no effect on SB-induced toxicity at high concentrations of SB (50 and 100 μg/mL). In conclusion, SB may cause oxidative stress as food additive in human erythrocytesin vitro. So, it appears that our findings provide evidence for the protection of erythrocytes from SB that could be considered for further studies.


2012 ◽  
Vol 36 (0E) ◽  
pp. 132-142
Author(s):  
Jawad Kadhim Araak

The present study was carried out to investigate the protective role of date palm pollenaqueous suspension against the toxic effects of carbon tetrachlorideon liver function in adultmale rats by studying the following parameters,estimation of ALP, AST, ALT enzymesactivity, totalserum bilirubin, and histological study of liver.Forty adult male rats aged 12-14weeks and weighed 275-325 gm were randomly divided into four equal groups(10 rats/group)and were treated for 42 days as follows : rats of the first group were received 1 ml tap waterorally once a day and olive oil 0.5 ml /kg B.W. intraperitonelly twice a week whichconsidered as group C, rats of the second group were received date palm pollen suspensionorally (150 mg/kg B.W) once a day and olive oil 0.5 ml /kg B.W. intraperitonelly twice aweek( group T1),rats of the third group were treated intraperitonelly with 500mg / kg B.W. ofCCL4 mixed with equal volume of olive oil twice a week (group T2) ,while rats of the fourthgroup were received date palm pollen suspension (150 mg/kgB.W) once a day orally andtreated intraperitonelly with 500 mg / kg B.W. of CCL4 mixing with equal volume of oliveoil twice a week (group T3). The blood samples were collected at (zero, 14, 28, 42) days forbiochemical parameters. After that, six rats from each group were sacrificed, and thensamples of liver were taken for histological study. The results revealed no significantdifferences (P > 0.05)in Liver Enzymes activity (ALT , AST , ALP ) as well asserumBilirubin (TSB) inT1 group treated with date palm pollen comporting with control groupwhile a significant elevation(P ≤ 0.05) in liver Enzymes (ALT , AST , ALP ) activity and totalserum bilirubin (TSB) in group T2 which exposed to carbon tetrachloride.the protective roleof date palm pollen against carbon tetrachloride was recorded in group T3 which manifestedby significant differences (P>0.05) in liver enzymes activity (ALT , AST , ALP ) and serumbilirubin (TSB) as compared to the control.The histological study of liverof date palm pollentreated rats (group T1) indicated proliferation of kupffer cells and no nuclear lesion, whilegroup T2 showed severe vacuolation in the hepatocytes, while group T3 showed moderatevacuolation in hepatocytes.From the result obtained ,it was concluded that it seems likely thatdosage of rats with (150 mg/kg B.W) of date palm pollen for 42 days of treatment causedimprovement and enhancement of liver function against carbon tetrachloride harmful effects.


2020 ◽  
Vol 134 (1) ◽  
pp. 71-72
Author(s):  
Naseer Ahmed ◽  
Masooma Naseem ◽  
Javeria Farooq

Abstract Recently, we have read with great interest the article published by Ibarrola et al. (Clin. Sci. (Lond.) (2018) 132, 1471–1485), which used proteomics and immunodetection methods to show that Galectin-3 (Gal-3) down-regulated the antioxidant peroxiredoxin-4 (Prx-4) in cardiac fibroblasts. Authors concluded that ‘antioxidant activity of Prx-4 had been identified as a protein down-regulated by Gal-3. Moreover, Gal-3 induced a decrease in total antioxidant capacity which resulted in a consequent increase in peroxide levels and oxidative stress markers in cardiac fibroblasts.’ We would like to point out some results stated in the article that need further investigation and more detailed discussion to clarify certain factors involved in the protective role of Prx-4 in heart failure.


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