S. Asgary; M.R. Afshani; M. Rafieian-Kopaei; M. Keshvari
Abstract
Hypertension is a major risk factor for cardiovascular disease which is failure in endothelial function and increased arterial stiffness. Pomegranate juice is rich in bioactive polyphenols with antioxidant and cardioprotective functions. Twenty-one hypertensive patients (aged 30-67 years) were recruited ...
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Hypertension is a major risk factor for cardiovascular disease which is failure in endothelial function and increased arterial stiffness. Pomegranate juice is rich in bioactive polyphenols with antioxidant and cardioprotective functions. Twenty-one hypertensive patients (aged 30-67 years) were recruited into the trial and assigned to receive either PJ (150 ml/day in a single occasion between lunch and dinner; n=11) or the same amount of water (n=10) for a period of two weeks. Systolic blood pressure (SBP), diastolic blood pressure (DBP) and flow-mediated dilation (FMD), along with serum concentrations of lipid profile parameters and apolipoproteins A and B were measured at baseline and two weeks after PJ consumption. Statistical analysis was conducted using paired t-test for continuous variables. PJ consumption was associated with significant reductions in SBP (p=0.002) and DBP (p=0.038) but not FMD (p>0.05). However, no significant effect was observed from PJ on serum levels of lipid profile parameters and apolipoproteins. PJ has promising acute hypotensive properties. Consumption of PJ could be considered in the context of both dietary and pharmacological interventions for hypertension.
N. Kabiri; S. Asgary; P. Rahimi
Abstract
Regression and suppression of atherosclerotic lesion may be a realistic goal in some patients. Antioxidants and hypolipidemic agents suppress the development of hypercholesterolemic atherosclerosis and induce regression of atherosclerosis. In this study, the serum lipid and atherosclerotic lesions following ...
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Regression and suppression of atherosclerotic lesion may be a realistic goal in some patients. Antioxidants and hypolipidemic agents suppress the development of hypercholesterolemic atherosclerosis and induce regression of atherosclerosis. In this study, the serum lipid and atherosclerotic lesions following the intake of Hypericum perforatum L. on regression in hypercholesterolemic rabbits were investigated. Rabbits were assigned to four groups as follows: Group I control diet (75 days); Group II 1% cholesterol diet (75 days); Group III 1% cholesterol diet (45 days) followed by regular diet(30 days); Group IV 1% cholesterol diet (45 days) followed by regular diet and HPL (30 days). Blood samples were collected at baseline and after 45 days and 75 days for measurement of serum lipids. At the end of the protocol, the aorta was removed for assessment of atherosclerotic plaques. Our results showed that plasma total cholesterol, TG, LDL-C concentrations and AI, decreased, and the plasma HDL cholesterol concentration increased in Groups III– ΙV. The decrease of serum Lipids and atherosclerotic lesions in Group IV was more compared to that of Group III in regression period. The reduction in atherosclerotic lesions was associated with a reduction in oxidative stress. These results suggest that regular diet following a high cholesterol diet accelerates atherosclerosis in spite of a decrease in serum lipids; According to the results, HPL treatment prevents the progression of atherosclerosis following a high cholesterol diet probably associated with a reduction of risk factors and antioxidant mechanism.
N. Kabiri; S. Asgary; P. Rahimi
Abstract
Hypercholesterolemia, cholesterol-enriched diet and oxidative stress may cause an increase in serum total cholesterol (TC) levels resulting in development of atherosclerosis. Antioxidants play an important role in inhibiting and scavenging free radicals. Amaranthus caudatus L. is a lipid-lowering and ...
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Hypercholesterolemia, cholesterol-enriched diet and oxidative stress may cause an increase in serum total cholesterol (TC) levels resulting in development of atherosclerosis. Antioxidants play an important role in inhibiting and scavenging free radicals. Amaranthus caudatus L. is a lipid-lowering and antioxidant agent. The objectives of this study were to determine the effect of Amaranthus caudatus L. in reduction of some risk factor for atherosclerosis associated with reduction of oxidative stress. rabbits were assigned to four groups: Group I, regular diet (control); Group II, 1% cholesterol diet for 75 days; Group III, 1% cholesterol diet (45 days) followed by regular diet(30 days); Group IV, 1% cholesterol diet (45 days) followed by regular diet and Amaranthus caudatus (30 days) (150 mg·kg body wt). Blood samples were collected from rabbits before (0 time) and after 45 days and 75 days of experimental diets for measurement of apolipoproteinB (apoB), malondialdehyde (MDA), apolipoproteinA (apoA) and OX-LDL. The results showed that application of Amaranthus caudatus for 30 days caused a significant decrease in apolipoproteinB (apoB), malondialdehyde (MDA) and OX-LDL. However apolipoproteinA (apoA) increased significantly. Whereas, no significant decrease of risk factors was observed in animals received only normal diet. Consequently, these effects of Amaranthus are associated with reductions in oxidative stress probably due to the antiatherogenic effects and it could be considered as an important diet in regression of atherosclerosis.
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.
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.
