Gh. Naderi; N. Jafari Dinani; N. Nejabat; M. Kelardasht; A. Jafarian Dehkordi; S. Asgary; R. Shami
Abstract
Disturbance in haemostatic system causes abnormal clots in vessels and thromboambolia. Streptokinas and urokinas are used for emergency treatment of thromboambolia. These drugs have certain limitations which cause serious and sometimes fatal consequences. Herbal preparations are considered to be safe ...
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Disturbance in haemostatic system causes abnormal clots in vessels and thromboambolia. Streptokinas and urokinas are used for emergency treatment of thromboambolia. These drugs have certain limitations which cause serious and sometimes fatal consequences. Herbal preparations are considered to be safe and without side-effects. Since in ancient times it was reported that Zataria moltiflora Boiss., Curcuma domestica Valet., Cinnamomum verum J.Presl and Heracleum persicum Desf. Ex Fischer present anticoagulant effects. This study performed to evaluate fibrinolytic effects of these plants. To evaluate fibrinolytic effects, labeled fibrinogen with FITC and Ca2+ was added to human plasma. Polyphenolic extracts (0.05, 0.5, 5, 50mg/ml) without and with streptokinas, were added to labeled clot. Fluorescence was determined after 10, 20, 40 and 60 minutes (Ex=478, Em= 510). Our findings show that extract of Zataria moltiflora, Curcuma domestica and Cinnamomum verum reveal fibrinolytic effects (P<0.05). This effects are significant and dose dependable, but Heracleum persicum had no significant fibrinolytic effect (P>0.05). Fibrinolytic effects of streptokinase in presence Zataria moltiflora are increased significantly and dose dependably. This effect in presence of Curcuma domestica and Cinnamon only in 5 and 50 mg/dl are increased. Heracleum persicum does not affect fibrinolytic properties of streptokinase. The present study indicate that, Zataria moltiflora presents best fibrinolytic effect, then Curcuma domestica and Cinnamon verum respectively reveal significant fibrinolytic effect and could lysis blood clots in vitro. Consequently, we suggest that further studies to determine in vivo clot dissolving properties and active component(s) of these herbs for clot lysis are warranted.
A. Movahedian; S. Asgary; G.A. Naderi; H. Sadeghi Mansoorkhani
Volume 23, Issue 2 , August 2007, , Pages 226-233
Abstract
As a result of the public view on the advantage of herbal medicines, there has been an increasing demand for these products. Since they are wildly available and are used as self-remedies and also due to the reports regarding their toxic effects, the present study was conducted to investigate the effects ...
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As a result of the public view on the advantage of herbal medicines, there has been an increasing demand for these products. Since they are wildly available and are used as self-remedies and also due to the reports regarding their toxic effects, the present study was conducted to investigate the effects of some Iranian herbaceous products such as prostatan, sankol, shirafza, and hypiran drops on liver function in rats. Three doses of each drug (highest beeng 2.5 times the maximum recommended dose) were administrated orally to the animals for seven weeks. The rats were then sacrificed, the blood sample was collected and the serum was separated at the end of treatment’s period. The parameters related to liver function were determined using spectrophotometric methods. The liver itself was also examined for pathological damage. The obtained results showed that prostatan did not alter the measured parameters significantly while shirafza resulted in a 34% increase in LDH levels when highest dose was used. Sankol and hypiean also increased serum ALT, AST and LDH in high doses when compared to the control group. Histopathological studies demonstrated a possible effect of sankol and hypyiran on rat liver tissue.
N. Jafari Dinani; S. Asgary; H. Madani; Gh. Naderi; P. Mahzoni
Volume 23, Issue 1 , May 2007, , Pages 1-12
Abstract
Atherosclerosis occurs principally in medium and large arteries and is a leading cause of cardiovascular disease. Epidemiologic study indicates that coronary heart disease and atherosclerosis is less in societies which use herbal medicines. Glycyrrhiza glabra is an herb of Papilionaceae family which ...
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Atherosclerosis occurs principally in medium and large arteries and is a leading cause of cardiovascular disease. Epidemiologic study indicates that coronary heart disease and atherosclerosis is less in societies which use herbal medicines. Glycyrrhiza glabra is an herb of Papilionaceae family which contains hypolipidemic compounds and flavonoids with high antioxidant properties. This study was conducted to determine the effect of Glycyrrhiza glabra extract on blood lipid levels and atherosclerosis in rabbits fed with high cholesterol diet. Fifteen male rabbits were randomly divided into three groups, normal diet group, highcholesterolemic control group (1% cholesterol) and high-cholesterol + Glycyrrhiza glabra group (50 mg/kg body weight every other day). The concentration of total cholesterol (TC), LDL cholesterol, triglycerides (TG) and HDL cholesterol were determined in rabbits in the beginning of experiment, and in the end of the first and second month of the study. In the end of the experimental period the rabbits were killed having overdose chloroform and their aortas were removed for assessing atherosclerotic plaques. Results showed that Glycyrrhiza glabra decreased TC, LDL and TG levels and increased HDL, significantly. The lesion atherosclerotic significantly reduced in high-cholesterol + Glycyrrhiza glabra group as compared to highcholesterolemic control group. It could be suggested that the Glycyrrhiza glabra extract can effectively prevent the progress of atherosclerosis and extensive studies are needed to investigate the effect of Glycyrrhiza glabra in prevention and treatment of atherosclerosis.
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.
S. Asgary; H. Madani; P. Mahzoni; N. Jafari; Gh. Naderi
Volume 22, Issue 4 , February 2007, , Pages 303-314
Abstract
Coronary heart disease (CHD) is invariably the most frequent cause of death in most of the west countries. Atherosclerosis which is the most common risk factor for CHD caused by a gradual deposition of fats and lipids in muscular arteries. Many species of Artemisia from Compositeae family have hypolipidemic ...
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Coronary heart disease (CHD) is invariably the most frequent cause of death in most of the west countries. Atherosclerosis which is the most common risk factor for CHD caused by a gradual deposition of fats and lipids in muscular arteries. Many species of Artemisia from Compositeae family have hypolipidemic and antioxidative properties. The objective of this study was to determine the effect of Artemisia sieberi extract on blood lipids and development of atherosclerosis in rabbits fed by a high cholesterol diet. For this objective 15 male rabbits were randomly divided in three groups (normal diet, hypercholesterolemic diet (HCD) and HCD + 100 mg/kg body weight Artemisia sieberi extract). Total cholesterol (TC), LDL cholesterol, triglycerides (TG) and HDL cholesterol were measured before starting and after 1st and 2nd months of experimental period. After two months, rabbits were killed following chloroform over dose and their aortas were removed for assessment of atherosclerotic plaques. The results indicate that Artemisia sieberi significantly reduces the levels of TC, LDL, TG and TC/HDL and significantly increase the level of HDL. The atherosclerotic plaque formation was significantly reduced in Artemisia sieberi group as compared to the control hypercholesterolemic group.
S.H. Madani; Gh. Naderi; S. Asgari; D. Khaksar; M. Talebalhoseini
Volume 22, Issue 2 , September 2006, , Pages 79-84
Abstract
The researches have shown that some plants extracts has protective effects on rats hepatocytes. Most plants have different phenol compounds that for eliciting of them solvents such as ethanol, ethyl acetate and water are used. These phenol compounds are able to neutralize free radicals by giving them ...
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The researches have shown that some plants extracts has protective effects on rats hepatocytes. Most plants have different phenol compounds that for eliciting of them solvents such as ethanol, ethyl acetate and water are used. These phenol compounds are able to neutralize free radicals by giving them electrons. Thioacetamide as a destructive toxin in hepatocytes is changed into S-oxide metabolic which is a dangerous free radical and can lead to Necrosis and Apoptosis of hepatocytes. For evaluation of hepatocytes damages on the treated rats by thioacetamide and also the study of the effects of protective phenol compounds of silymbum h. extract and hydro alcoholic, aqueous ginger extract, the value of serum transaminasis of GPT, GOT, billirubin, Alkalin phosphatase, Sodium and potassium has been determined. In this research, the male and female of wistar race rats have been used. Rats were divided into ten group of five, then thioacetamide with a dose of 50 mg/kg and the extracts with a dose of 100 mg/kg were both injected (I.P) in a sequence of three days. 48 hours after the last injection, blood was directly taken from heart and its serum was prepared. The above mentioned factors were measured and the results have shown that ginger hydro alcoholic and aqueous extract and Silybum h. extract would have a positive effect on hepatocytes of rats treateds by thioacetamide (P<0/05). A significant difference was not seen among the factors in the male and female rat. Comparatively, the results have determined that the protective effect of Silymbum h. extract was higher than the ginger aqueous extract and ginger aqueous extract higher than ginger hydro alcoholic extract. The protective effect of these extracts is due to the existence of polyphenolic substances in the plants, these substances have an antioxidant function.
S. Asgary; Gh. Naderi; N. Askari
Abstract
Flavonoids which are polyphenolic substances are found in different vegetable and fruits and they have anti-oxidant properties. Epidemiological studies showed that flavonoids reduce the prevalence of cardiovascular disease. On the other hand, the usage of synthetic antioxidants have been limited because ...
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Flavonoids which are polyphenolic substances are found in different vegetable and fruits and they have anti-oxidant properties. Epidemiological studies showed that flavonoids reduce the prevalence of cardiovascular disease. On the other hand, the usage of synthetic antioxidants have been limited because of their toxicity and, there are different researches to find better natural antioxidants. This survey investigates the effect of some pure flavonoids such as kaempferol, quercetin, morin and rutin on red blood cell (RBC) hemolysis and their -SH capacity as membrane protection indicator. The flavonoids solutions were prepared. Rate of RBC hemolysis and -SH capacity of cell membrane were determined by spectrophotometer. 2,2´azobis2 amidino propane dihydrechloride (AAPH) was used to induce RBC peroxidation. The effect of each flavonoids on RBC hemolysis was examined in 3 concentrations (0.15, 5, 10) μg/ml but for investigating the effect on -SH groups only the highest concentration (10 μg/ml) of each flavonoids were used. In all cases, the antioxidant activity was dose-dependent. Rutin showed the highest inhibitory effect on RBC hemolysis than other flavonoid, that was 42.5. Also kaempferol, rutin, morin protect -SH groups 6%, 23.3%, 26.4% respectively. Results showed that flavonoids and plants contain flavonoids can be used as natural antioxidants for treatment and prevention of diseases which their pathogenesis are lipid peroxidation.
