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Investigation the effect of the alcoholic extract of Zingiber officinale on liver enzymes and oxidative stress during ischemia reperfusion injury
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Background: Hepatic ischemia-reperfusion (I/R) injury may occur in a variety of clinical set­tings and this remains a significant problem. Oxygen free radi­cals, produced on reperfusion have been shown to play a major role in hepatic I/R injury. Various therapeutic effects have been described for Zingiber officinale. Additionally, it has been presented that Zingiber officinale has protective effect against ischemia reperfusion injury to various organs. Therefore, it seems possible that the administration of Zingiber officinale might protect the liver against the ischemia reperfusion  injury.

Objectives : To determine whether Zingiber officinale prevents hepatic ischemia-reperfusion injury to the liver.

 Methods: Thirty-six rats were divided into three groups as control (Group 1), I/R group (Group 2), and Zingiber officinale treatment group (Group 3). All rats underwent hepatic ischemia for 60 min followed by 60 min period of reperfusion. Rats were internalely infused with only 0.9% saline solution in group 2. Rats in group 3 received alcoholic extract of Z. officinale (200 mg/kg) intraperitoneally, before isch­emia and before reperfusion. Blood samples were harvested from the rats, and then the rats were sacrificed. Serum aspartate aminotransfera­se (AST), alanine aminotransferase (ALT),  lactate dehydrogenase (LDH) oxidative stress  levels of reactive oxygen species (ROS) ,nitric oxide (NO) and lipid peroxida­tion (LPO) levels were determined.

 Results: The levels of liver enzymes and Oxidative stress in group 3 were significantly lower than those in the group 2.

Conclusion: Our results suggest that Zingiber officinale treatment protects the rat liver against  hepatic ischemia-reperfusion.

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Publication Date
Sun Jun 05 2011
Journal Name
Baghdad Science Journal
Correlation between Paris function parameters to crack velocity for Alumina ceramics
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The question about the existence of correlation between the parameters A and m of the Paris function is re-examined theoretically for brittle material such as alumina ceramic (Al2O3) with different grain size. Investigation about existence of the exponential function which fit a good approximation to the majority of experimental data of crack velocity versus stress intensity factor diagram. The rate theory of crack growth was applied for data of alumina ceramics samples in region I and making use of the values of the exponential function parameters the crack growth rate theory parameters were estimated.

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Publication Date
Wed Apr 25 2018
Journal Name
Ibn Al-haitham Journal For Pure And Applied Sciences
Different Estimation Methods for System Reliability Multi-Components model: Exponentiated Weibull Distribution
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        In this paper, estimation of system reliability of the multi-components in stress-strength model R(s,k) is considered, when the stress and strength are independent random variables and follows the Exponentiated Weibull Distribution (EWD) with known first shape parameter θ and, the second shape parameter α is unknown using different estimation methods. Comparisons among the proposed estimators through  Monte Carlo simulation technique were made depend on mean squared error (MSE)  criteria

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