Z. Majidi; M. Behnam-Rassouli; I. Jahansoz
Abstract
In this investigation, the effects of alcoholic extract administration of walnut's leaves (Juglans regia L.) on the serum levels of glucose, urea, triglyceride and cholesterol of diabetic rats were studied. Alcoholic extract of walnut's leaves was prepared by maceration technique and then their lethal ...
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In this investigation, the effects of alcoholic extract administration of walnut's leaves (Juglans regia L.) on the serum levels of glucose, urea, triglyceride and cholesterol of diabetic rats were studied. Alcoholic extract of walnut's leaves was prepared by maceration technique and then their lethal dose was measured. From 32 male and female rats, 8 rats were considered as control (non diabetic) and the others were made diabetic by subcutaneous injection of 120mg/kg body weight Alloxan monohydrate. Diabetic rats were divided into experimental groups as follows: 1 (with no treatment), 2 (treated with 0.75g/kg body weight alcoholic extract) and 3 (treated with 0. 5 g/kg body weight of alcoholic extract). Blood samples were collected weekly for a period of four weeks and the serum levels of glucose, urea, triglyceride and cholesterol were measured. The results indicated that the administration of extract might lower the serum levels of glucose and urea and increase the serum levels of cholesterol and triglyceride.
M.R. Shahraki; H. Mirshekari; A.R Shahraki; E. Shahraki
Abstract
Since Ocimum basilicumL. is used as a traditional herbal medicine, this study was carried out to evaluate the effect of aqueous and metanolic extract of Ocimum basilicum leaf on blood glucose, lipid profiles and liver enzymes in fructose-fed male rats. The experiment was performed on 32 Wistar-Albino ...
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Since Ocimum basilicumL. is used as a traditional herbal medicine, this study was carried out to evaluate the effect of aqueous and metanolic extract of Ocimum basilicum leaf on blood glucose, lipid profiles and liver enzymes in fructose-fed male rats. The experiment was performed on 32 Wistar-Albino rats including one control group (A) and three tests groups (B, C and D). Test groups consumed fructose-enriched water and received zero and 20mg/kg aqueous and metabolic extract daily and respectively for 60 days but control group consumed tap water in treatment duration. At the end, serum glucose, insulin, liver enzymes and lipid profile were measured. The obtained data were analyzed by ANOVA and Tukey tests. Results were expressed as mean ± SE and significant differences were found at 0.05% level of probability. Our findings showed that insulin resistance index, insulin and FBS in tests groups significantly increased compared with those of group A; however, serum insulin value in group D significantly increased compared with that of group B and C. On the other hand, AST (aspartate aminotransfrase) and ALT (alanine amino transferase) values in group D significantly decreased compared with those of the B and C groups. Also, the value of LDL in group C was significantly lower in comparison to other test groups. The results of this study showed that consumption of Ocimum basilicumleaf extract had an effect on LDL and liver enzymes in fructose-fed male rats.
S. Asgary; S.A. Emami; M.R. Shams Ardekani; Gh. Naderi; S. Aslani; T. Kasher; A. Airin
Volume 23, Issue 1 , May 2007, , Pages 59-72
Abstract
Free radicals especially reactive oxygen species damage biomolecules such as DNA, proteins, enzymes and membrane lipids. Nowadays, it is believed that antioxidant and oxidant systems play an important role in the pathogenesis of many diseases such as atherosclerosis, cancers, aging, etc. In the ...
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Free radicals especially reactive oxygen species damage biomolecules such as DNA, proteins, enzymes and membrane lipids. Nowadays, it is believed that antioxidant and oxidant systems play an important role in the pathogenesis of many diseases such as atherosclerosis, cancers, aging, etc. In the present study, antioxidant effects of essential oils from the fruits and twigs ofJuniperus excelsa subsp. Excelsa on several oxidative systems (red blood cells haemolysis , LDL oxidation, insulin and haemoglobin glycosylation and linoleic acid peroxidation) were studied. Plant specimens were identified after collection and essential oils from the fruits and twigs were separately extracted by steam distillation method. Three different concentration of each extracts from the fruits and twigs of plant were used. Experiments were carried out in the presence and in the absence of each concentration by Cu and spectroscopic method for LDL oxidation. 2, 2’-Azobis- (2-amidinopropane) dihydrochloride (AAPH) was used to hemolysis of red blood cells and the amount of haemolysis was measured by spectroscopic method in 540 nm. Total conjugated dienes (CDs) formation from linoleic acid was determined at the presence of FeSO in 234nm. The results of this study show that insulin and haemoglobin glycosylation were effectively inhibited by the examined essential oil, also LDL oxidation was inhibited in the presence of different concentration of these oils. Inhibitory effect of twigs on LDL oxidation was greater than vitamin C. No anti-oxidation activity on LDL oxidation was observed when the experiments run with examined-concentrations of fruit. Linoleic acid oxidation in the presence of examined-oils was efficiently inhibited and a direct correlation was observed between the level of inhibition and incubation time. The obtained essential oils inhibited red blood cells haemolysis in low concentration and accelerate red blood cells haemolysis by peroxidant properties in high concentration. These results demonstratethat the essential oils prepared from the fruit and twigs of the Juniperus excelsa subsp. excelsa possess antioxidantactivity in low concentration in several oxidative systems even them caused red blood cells haemolysis in vitro. Hence, more studies are called to examine the effect of this plant for treatment of some disease including atherosclerosis, diabetes, cancer, etc.
