scholarly journals Antioxidant enzymes as biochemical markers for sharka resistance in apricot

2006 ◽  
Vol 50 (3) ◽  
pp. 400-404 ◽  
Author(s):  
J. A. Hernandez ◽  
J. Cano ◽  
B. Portillo ◽  
M. Rubio ◽  
P. Martinez-Gomez
2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Swati Kujur ◽  
Sunil K. C.R. ◽  
Anand Barapatre ◽  
Geetha N.

<p>Developing traditional medicine in the field of hepatology and nephrology research is the key to pharmacology. This study demonstrates the mechanism of hepatoprotective and renal protective activity of <em>Ficus dalhousiae</em> Miq. (Moraceae) methanolic leaf extract on carbon tetrachloride induced hepatic and renal toxicity. Shade dried powder was subjected to shoxlet extraction with methanol and assessed for hepatoprotective and renal protective activities. Hepatotoxicity and renal toxicity were induced in rats by single oral dose of CCl<sub>4</sub> diluted with olive oil (1:1 v/v; ml/kg body weight) after pretreatment of methanolic extract for seven days. Sixteen hrs after CCl<sub>4</sub> administration, rats were sacrificed and biochemical markers like Serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) estimated followed by the measurement of liver and kidney cytosolic antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and reactive oxygen species (ROS). The data were analysed by one way analysis of variance (ANOVA). The extract at the doses of 150 and mg/kg b.w. significantly reduces elevated levels of ALT, AST, ALP and LDH. The extracts also showed significant increase in the reduced level of SOD, CAT and GSH. The ROS activity also found down regulated. The activity of methanolic extracts were comparable with the standard Silymarin. These findings not only showed potential hepatoprotective and renal protective activities of <em>Ficus dalhousiae</em> but also manifested by restoring antioxidant enzymes. With this pilot study we can justify the medicinal importance of this plant.</p>


2010 ◽  
Vol 49 ◽  
pp. S39
Author(s):  
Ana Mara de Oliveira e Silva ◽  
Eliane Bonifácio Teixeira de Carvalho ◽  
Milessa da Silva Afonso ◽  
Illana Louise Pereira de Melo ◽  
Jorge Mancini-Filho

Author(s):  
Adrian Raduta ◽  
Dumitru Curca

Selenium is a trace mineral with antioxidant proprieties, which, by mediating  the glutathione, indirectly protects the hemoglobin against the risk of oxidation by peroxides through three antioxidant enzymes: superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalaseThe experiment was done on 20 laying chicks from the Rosso race, 6 weeks old at the start. The chicks were divided in 2 batches, and one of the batches received feed enriched with organic selenium (Sel-Plex). After 180 days, biological samples were colected by cubital vein puncture and hematological and biochemical determinations were made. The results were tabled, graphically represented and biostatistically interpreted. In the experimental batch significant growths were observed in the erythrocyte constants: erithremie, hemoglobinemy, hematocrite and MCH. Of the biochemical markers significant growths were observed in: ascorbinemic acid, alkalin phospahasis and selenium. The following parameters dropped significantly : proteinemia, amylase and MCV. Changes were also observed in cholesterol, calcium, magnesium and other parameters, but without statisticaly value. In the present paper we have shown the beneficial role of organic selenium on some haematological and biochemical markers, resulting in a growth of erythropoiesis, and at the same time a intensification of the metabolic processes in the experimental group.


2006 ◽  
Vol 76 (5) ◽  
pp. 324-331 ◽  
Author(s):  
Marsh ◽  
Laursen ◽  
Coombes

Erythrocytes transport oxygen to tissues and exercise-induced oxidative stress increases erythrocyte damage and turnover. Increased use of antioxidant supplements may alter protective erythrocyte antioxidant mechanisms during training. Aim of study: To examine the effects of antioxidant supplementation (α-lipoic acid and α-tocopherol) and/or endurance training on the antioxidant defenses of erythrocytes. Methods: Young male Wistar rats were assigned to (1) sedentary; (2) sedentary and antioxidant-supplemented; (3) endurance-trained; or (4) endurance-trained and antioxidant-supplemented groups for 14 weeks. Erythrocyte superoxide dismutase (SOD), glutathione peroxidase (GPX), and catalase (CAT) activities, and plasma malondialdehyde (MDA) were then measured. Results: Antioxidant supplementation had no significant effect (p > 0.05) on activities of antioxidant enzymes in sedentary animals. Similarly, endurance training alone also had no effect (p > 0.05). GPX (125.9 ± 2.8 vs. 121.5 ± 3.0 U.gHb–1, p < 0.05) and CAT (6.1 ± 0.2 vs. 5.6 ± 0.2 U.mgHb–1, p < 0.05) activities were increased in supplemented trained animals compared to non-supplemented sedentary animals whereas SOD (61.8 ± 4.3 vs. 52.0 ± 5.2 U.mgHb–1, p < 0.05) activity was decreased. Plasma MDA was not different among groups (p > 0.05). Conclusions: In a rat model, the combination of exercise training and antioxidant supplementation increased antioxidant enzyme activities (GPX, CAT) compared with each individual intervention.


2010 ◽  
Vol 80 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Pei-Min Chao ◽  
Wan-Hsuan Chen ◽  
Chun-Huei Liao ◽  
Huey-Mei Shaw

Conjugated linoleic acid (CLA) is a collective term for the positional and geometric isomers of a conjugated diene of linoleic acid (C18:2, n-6). The aims of the present study were to evaluate whether levels of hepatic α-tocopherol, α-tocopherol transfer protein (α-TTP), and antioxidant enzymes in mice were affected by a CLA-supplemented diet. C57BL/6 J mice were divided into the CLA and control groups, which were fed, respectively, a 5 % fat diet with or without 1 g/100 g of CLA (1:1 mixture of cis-9, trans-11 and trans-10, cis-12) for four weeks. α-Tocopherol levels in plasma and liver were significantly higher in the CLA group than in the control group. Liver α-TTP levels were also significantly increased in the CLA group, the α-TTP/β-actin ratio being 2.5-fold higher than that in control mice (p<0.01). Thiobarbituric acid-reactive substances were significantly decreased in the CLA group (p<0.01). There were no significant differences between the two groups in levels of three antioxidant enzymes (superoxide dismutase, glutathione peroxidase, and catalase). The accumulation of liver α-tocopherol seen with the CLA diet can be attributed to the antioxidant potential of CLA and the ability of α-TTP induction. The lack of changes in antioxidant enzyme protein levels and the reduced lipid peroxidation in the liver of CLA mice are due to α-tocopherol accumulation.


2020 ◽  
pp. 39-43
Author(s):  
A. V. Voronkina ◽  
T. A. Raskina ◽  
M. V. Letaeva ◽  
Yu. V. Averkieva ◽  
O. S. Malyshenko ◽  
...  

The development of atherosclerosis is closely related to the calcification of the vessel intima and fibrous plaques, being a complex and multifactorial process, in which the markers of bone formation and resorption play an important role. Objective. To study the biochemical markers of bone metabolism in men with stable coronary heart disease (CHD). Material and methods. The study included 102 men with verified CHD. Data were evaluated by densitometry, coronary angiography, multispiral computed tomography, color duplex scanning of brachiocephalic arteries, serum lipids (total cholesterol, triglycerides [TG], high-density [LHD] and low-density lipoprotein cholesterol), concentrationsin the blood of osteocalcin (OC), bone alkaline phosphatase (BAP), cathepsin K and C-telopeptides (CTx). Results. Concentrations of BAP, cathepsin K and CTx in patients with CHD were significantly higher than in men without CHD. The concentration of OC in men with normal bone mineral density was significantly lower than in patients with osteopenic syndrome. There was a direct correlation between OC and antiatherogenic HDL cholesterol and the inverse correlation between OC and TG, CTx and TG. There was no correlation between the level of bone remodeling markers and coronary artery (CA) lesion variant and the severity of coronary atherosclerosis on SYNTAX scale. The correlation analysis did not reveal the connection of biochemical markers of bone metabolism with the severity of coronary atherosclerosis and calcification and thickness of intima-media complex of carotid arteries. Absolute values of bone formation indices (BAP, OC) were significantly higher in patients with severe СA calcification than in patients without signs of calcification. Summary. Increased rates of osteogenesis and osteoresorption characterize the accelerated process of bone metabolism and indicate in favor of high rates of bone loss in men with CHD, which confirms the likelihood of common pathophysiological mechanisms of bone resorption and arterial calcification.


2013 ◽  
Author(s):  
Swolin-Eide Diana ◽  
Braathen Gunnar ◽  
Emilsson Roger ◽  
Glansen Ulla ◽  
Soderpalm Ann-Charlott ◽  
...  

2006 ◽  
Vol 0 (2) ◽  
pp. 76
Author(s):  
Bernard Lewis Croal ◽  
Jane D McNeilly ◽  
◽  

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